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Radu RA, Costalat V, Romoli M, Musmar B, Siegler JE, Ghozy S, Khalife J, Salim H, Shaikh H, Adeeb N, Cuellar-Saenz HH, Thomas AJ, Kadirvel R, Abdalkader M, Klein P, Nguyen TN, Heit JJ, Regenhardt RW, Bernstock JD, Patel AB, Rabinov JD, Stapleton CJ, Cancelliere NM, Marotta TR, Mendes Pereira V, El Naamani K, Amllay A, Tjoumakaris SI, Jabbour P, Meyer L, Fiehler J, Faizy TD, Guerreiro H, Dusart A, Bellante F, Forestier G, Rouchaud A, Mounayer C, Kühn AL, Puri AS, Dyzmann C, Kan PT, Colasurdo M, Marnat G, Berge J, Barreau X, Sibon I, Nedelcu S, Henninger N, Ota T, Dofuku S, Yeo LLL, Tan BY, Gopinathan A, Martinez-Gutierrez JC, Salazar-Marioni S, Sheth S, Renieri L, Capirossi C, Mowla A, Chervak LM, Vagal A, Khandelwal P, Biswas A, Clarençon F, Elhorany M, Premat K, Valente I, Pedicelli A, Alexandre AM, Filipe JP, Varela R, Quintero-Consuegra M, Gonzalez NR, Ymd MA, Jesser J, Weyland C, Ter Schiphorst A, Yedavalli V, Harker P, Aziz Y, Gory B, Paul Stracke C, Hecker C, Killer-Oberpfalzer M, Griessenauer CJ, Hsieh CY, Liebeskind DS, Tancredi I, Fahed R, Lubicz B, Essibayi MA, Baker A, Altschul D, Scarcia L, Kalsoum E, Dmytriw AA, Guenego A. Outcomes with General Anesthesia Compared to Conscious Sedation for Endovascular Treatment of Medium Vessel Occlusions: Results of an International Multicentric Study. Clin Neuroradiol 2024:10.1007/s00062-024-01415-1. [PMID: 38687365 DOI: 10.1007/s00062-024-01415-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Accepted: 04/14/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND Optimal anesthetic strategy for the endovascular treatment of stroke is still under debate. Despite scarce data concerning anesthetic management for medium and distal vessel occlusions (MeVOs) some centers empirically support a general anesthesia (GA) strategy in these patients. METHODS We conducted an international retrospective study of MeVO cases. A propensity score matching algorithm was used to mitigate potential differences across patients undergoing GA and conscious sedation (CS). Comparisons in clinical and safety outcomes were performed between the two study groups GA and CS. The favourable outcome was defined as a modified Rankin Scale (mRS) 0-2 at 90 days. Safety outcomes were 90-days mortality and symptomatic intracranial hemorrhage (sICH). Predictors of a favourable outcome and sICH were evaluated with backward logistic regression. RESULTS After propensity score matching 668 patients were included in the CS and 264 patients in the GA group. In the matched cohort, either strategy CS or GA resulted in similar rates of good functional outcomes (50.1% vs. 48.4%), and successful recanalization (89.4% vs. 90.2%). The GA group had higher rates of 90-day mortality (22.6% vs. 16.5%, p < 0.041) and sICH (4.2% vs. 0.9%, p = 0.001) compared to the CS group. Backward logistic regression did not identify GA vs CS as a predictor of good functional outcome (OR for GA vs CS = 0.95 (0.67-1.35)), but GA remained a significant predictor of sICH (OR = 5.32, 95% CI 1.92-14.72). CONCLUSION Anaesthetic strategy in MeVOs does not influence favorable outcomes or final successful recanalization rates, however, GA may be associated with an increased risk of sICH and mortality.
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Affiliation(s)
- Răzvan Alexandru Radu
- Department of Neuroradiology, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France.
- Department of Clinical Neurosciences, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.
| | - Vincent Costalat
- Department of Neuroradiology, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France
| | - Michele Romoli
- Neurology and Stroke Unit, Bufalini Hospital, AUSL Romagna, Cesena, Italy
| | - Basel Musmar
- Department of Neurosurgery and Interventional Neuroradiology, Louisiana State University, Louisiana, LA, USA
| | - James E Siegler
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | - Sherief Ghozy
- Departments of Neurological Surgery & Radiology, Mayo Clinic, Rochester, MN, USA
| | - Jane Khalife
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | - Hamza Salim
- Department of Neurosurgery and Interventional Neuroradiology, Louisiana State University, Louisiana, LA, USA
| | - Hamza Shaikh
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | - Nimer Adeeb
- Department of Neurosurgery and Interventional Neuroradiology, Louisiana State University, Louisiana, LA, USA
| | - Hugo H Cuellar-Saenz
- Department of Neurosurgery and Interventional Neuroradiology, Louisiana State University, Louisiana, LA, USA
| | - Ajith J Thomas
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | - Ramanathan Kadirvel
- Departments of Neurological Surgery & Radiology, Mayo Clinic, Rochester, MN, USA
| | - Mohamad Abdalkader
- Departments of Radiology & Neurology, Boston Medical Center, Boston, MA, USA
| | - Piers Klein
- Departments of Radiology & Neurology, Boston Medical Center, Boston, MA, USA
| | - Thanh N Nguyen
- Departments of Radiology & Neurology, Boston Medical Center, Boston, MA, USA
| | - Jeremy J Heit
- Department of Interventional Neuroradiology, Stanford Medical Center, Palo Alto, CA, USA
| | - Robert W Regenhardt
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - Joshua D Bernstock
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
- Department of Neurosurgery, Brigham and Women's Hospital, Boston, MA, USA
| | - Aman B Patel
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - James D Rabinov
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - Christopher J Stapleton
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - Nicole M Cancelliere
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael's Hospital, Toronto, ON, Canada
| | - Thomas R Marotta
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael's Hospital, Toronto, ON, Canada
| | - Vitor Mendes Pereira
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael's Hospital, Toronto, ON, Canada
| | - Kareem El Naamani
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Abdelaziz Amllay
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | | | - Pascal Jabbour
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Lukas Meyer
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jens Fiehler
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tobias D Faizy
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Radiology, Interventional Neuroradiology Section, University Medical Center Münster, Munster, Germany
| | - Helena Guerreiro
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anne Dusart
- Department of Neurology, Hôpital Civil Marie Curie, Charleroi, Belgium
| | - Flavio Bellante
- Department of Neurology, Hôpital Civil Marie Curie, Charleroi, Belgium
| | - Géraud Forestier
- University Hospital of Limoges, Neuroradiology Department, Dupuytren, Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France
| | - Aymeric Rouchaud
- University Hospital of Limoges, Neuroradiology Department, Dupuytren, Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France
| | - Charbel Mounayer
- University Hospital of Limoges, Neuroradiology Department, Dupuytren, Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France
| | - Anna Luisa Kühn
- Division of Neurointerventional Radiology, Department of Radiology, University of Massachusetts Medical Center, Worcester, MA, USA
| | - Ajit S Puri
- Division of Neurointerventional Radiology, Department of Radiology, University of Massachusetts Medical Center, Worcester, MA, USA
| | - Christian Dyzmann
- Neuroradiology Department, Sana Kliniken, Lübeck GmbH, Lübeck, Germany
| | - Peter T Kan
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, USA
| | - Marco Colasurdo
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, USA
- Department of Interventional Radiology, Oregon Health and Science University, 97239, Portland, OR, USA
| | - Gaultier Marnat
- Interventional Neuroradiology Department, Bordeaux University Hospital, Bordeaux, France
| | - Jérôme Berge
- Interventional Neuroradiology Department, Bordeaux University Hospital, Bordeaux, France
| | - Xavier Barreau
- Interventional Neuroradiology Department, Bordeaux University Hospital, Bordeaux, France
| | - Igor Sibon
- Neurology Department, Bordeaux University Hospital, Bordeaux, France
| | - Simona Nedelcu
- Department of Neurology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Nils Henninger
- Department of Neurology, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Department of Psychiatry, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Takahiro Ota
- Department of Neurosurgery, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Shogo Dofuku
- Department of Neurosurgery, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Leonard L L Yeo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Benjamin Yq Tan
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Division of Neurology, Department of Medicine, National University Hospital, Singapore, Singapore
| | - Anil Gopinathan
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Division of Interventional Radiology, National University Hospital, Singapore, Singapore
| | | | | | - Sunil Sheth
- Department of Neurology, UTHealth McGovern Medical School, Houston, TX, USA
| | - Leonardo Renieri
- Interventistica Neurovascolare, Ospedale Careggi di Firenze, Florence, Italy
| | - Carolina Capirossi
- Interventistica Neurovascolare, Ospedale Careggi di Firenze, Florence, Italy
| | - Ashkan Mowla
- Division of Stroke and Endovascular Neurosurgery, Department of Neurological Surgery, Keck School of Medicine, University of Southern California (USC), North State St, Suite 3300, 1200, Los Angeles, CA, USA
| | - Lina M Chervak
- Department of Neurology and Radiology, University of Cincinnati, Cincinnati, USA
| | - Achala Vagal
- Department of Neurology and Radiology, University of Cincinnati, Cincinnati, USA
| | - Priyank Khandelwal
- Department of Endovascular Neurosurgery and Neuroradiology NJMS, Newark, NJ, USA
| | - Arundhati Biswas
- Department of Neurosurgery, Westchester Medical Center at New York Medical College, Valhalla, NY, USA
| | - Frédéric Clarençon
- Department of Neuroradiology, Pitié-Salpêtrière Hospital, Paris, France
- Division of Interventional Radiology, National University Hospital, Singapore, Singapore
| | - Mahmoud Elhorany
- Department of Neuroradiology, Pitié-Salpêtrière Hospital, Paris, France
- Neurology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
- Division of Interventional Radiology, National University Hospital, Singapore, Singapore
| | - Kevin Premat
- Department of Neuroradiology, Pitié-Salpêtrière Hospital, Paris, France
- Division of Interventional Radiology, National University Hospital, Singapore, Singapore
| | - Iacopo Valente
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A.Gemelli IRCCS Roma, Rome, Italy
| | - Alessandro Pedicelli
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A.Gemelli IRCCS Roma, Rome, Italy
| | - Andrea M Alexandre
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A.Gemelli IRCCS Roma, Rome, Italy
| | - João Pedro Filipe
- Department of Diagnostic and Interventional Neuroradiology, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - Ricardo Varela
- Department of Neurology, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | | | - Nestor R Gonzalez
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, USA
| | - Markus A Ymd
- Sektion Vaskuläre und Interventionelle Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Jessica Jesser
- Sektion Vaskuläre und Interventionelle Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Charlotte Weyland
- Sektion Vaskuläre und Interventionelle Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Adrien Ter Schiphorst
- Department of Neurology, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France
| | - Vivek Yedavalli
- Department of Radiology, Division of Neuroradiology, Johns Hopkins Medical Center, Baltimore, MD, USA
| | - Pablo Harker
- Department of Neurology, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Yasmin Aziz
- Department of Neurology, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Benjamin Gory
- Department of Interventional Neuroradiology, Nancy University Hospital, Nancy, France
- INSERM U1254, IADI, Université de Lorraine, 54511, Vandoeuvre-les-Nancy, France
| | - Christian Paul Stracke
- Department of Radiology, Interventional Neuroradiology Section, University Medical Center Münster, Munster, Germany
| | - Constantin Hecker
- Departments of Neurology & Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Monika Killer-Oberpfalzer
- Departments of Neurology & Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Christoph J Griessenauer
- Departments of Neurology & Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Cheng-Yang Hsieh
- Neurology Department, Sin-Lau Hospital, Tainan, Taiwan, Province of China
| | - David S Liebeskind
- UCLA Stroke Center and Department of Neurology Department, UCLA, Los Angeles, California, USA
| | - Illario Tancredi
- Department of Medicine, Division of Neurology, The Ottawa Hospital, Ottawa Hospital Research Institute and University of Ottawa, Ottawa, Ontario, Canada
| | - Robert Fahed
- Department of Medicine, Division of Neurology, The Ottawa Hospital, Ottawa Hospital Research Institute and University of Ottawa, Ottawa, Ontario, Canada
| | - Boris Lubicz
- Department of Diagnostic and Interventional Neuroradiology, Erasme University Hospital, Brussels, Belgium
| | - Muhammed Amir Essibayi
- Department of Neurological Surgery and Montefiore-Einstein Cerebrovascular Research Lab, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Amanda Baker
- Department of Neurological Surgery and Montefiore-Einstein Cerebrovascular Research Lab, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - David Altschul
- Department of Neurological Surgery and Montefiore-Einstein Cerebrovascular Research Lab, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Luca Scarcia
- Department of Neuroradiology, Henri Mondor Hospital, Creteil, France
| | - Erwah Kalsoum
- Department of Neuroradiology, Henri Mondor Hospital, Creteil, France
| | - Adam A Dmytriw
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael's Hospital, Toronto, ON, Canada
| | - Adrien Guenego
- Department of Diagnostic and Interventional Neuroradiology, Erasme University Hospital, Brussels, Belgium
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2
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Wang M, Henkes H, Ghozy S, Siegler JE, Shaikh H, Khalife J, Abdalkader M, Klein P, Nguyen TN, Heit JJ, Sweid A, Naamani KE, Regenhardt RW, Diestro JDB, Cancelliere NM, Amllay A, Meyer L, Dusart A, Bellante F, Forestier G, Rouchaud A, Saleme S, Mounayer C, Fiehler J, Kühn AL, Puri AS, Dyzmann C, Kan PT, Colasurdo M, Marnat G, Berge J, Barreau X, Sibon I, Nedelcu S, Henninger N, Weyland C, Marotta TR, Stapleton CJ, Rabinov JD, Ota T, Dofuku S, Yeo LL, Tan BYQ, Martinez-Gutierrez JC, Salazar-Marioni S, Sheth S, Renieri L, Capirossi C, Mowla A, Tjoumakaris SI, Jabbour P, Khandelwal P, Biswas A, Clarençon F, Elhorany M, Premat K, Valente I, Pedicelli A, Filipe JP, Varela R, Quintero-Consuegra M, Gonzalez NR, Möhlenbruch MA, Jesser J, Costalat V, Ter Schiphorst A, Yedavalli V, Harker P, Chervak LM, Aziz Y, Gory B, Stracke CP, Hecker C, Killer-Oberpfalzer M, Griessenauer CJ, Thomas AJ, Hsieh CY, Liebeskind DS, Radu RA, Alexandre AM, Tancredi I, Faizy TD, Patel AB, Pereira VM, Fahed R, Lubicz B, Dmytriw AA, Guenego A. Use of the pRESET LITE thrombectomy device in combined approach for medium vessel occlusions: A multicenter evaluation. Neuroradiology 2024; 66:631-641. [PMID: 38381145 DOI: 10.1007/s00234-024-03302-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 01/29/2024] [Indexed: 02/22/2024]
Abstract
PURPOSE Our purpose was to assess the efficacy and safety of the pRESET LITE stent retriever (Phenox, Bochum, Germany), designed for medium vessel occlusion (MeVO) in acute ischemic stroke (AIS) patients with a primary MeVO. METHODS We performed a retrospective analysis of the MAD MT Consortium, an integration of prospectively maintained databases at 37 academic institutions in Europe, North America, and Asia, of AIS patients who underwent mechanical thrombectomy with the pRESET LITE stent retriever for a primary MeVO. We subcategorized occlusions into proximal MeVOs (segments A1, M2, and P1) vs. distal MeVOs/DMVO (segments A2, M3-M4, and P2). We reviewed patient and procedural characteristics, as well as angiographic and clinical outcomes. RESULTS Between September 2016 and December 2021, 227 patients were included (50% female, median age 78 [65-84] years), of whom 161 (71%) suffered proximal MeVO and 66 (29%) distal MeVO. Using a combined approach in 96% of cases, successful reperfusion of the target vessel (mTICI 2b/2c/3) was attained in 85% of proximal MeVO and 97% of DMVO, with a median of 2 passes (IQR: 1-3) overall. Periprocedural complications rate was 7%. Control CT at day 1 post-MT revealed a hemorrhagic transformation in 63 (39%) patients with proximal MeVO and 24 (36%) patients with DMVO, with ECASS-PH type hemorrhagic transformations occurring in 3 (1%) patients. After 3 months, 58% of all MeVO and 63% of DMVO patients demonstrated a favorable outcome (mRS 0-2). CONCLUSION Mechanical thrombectomy using the pRESET LITE in a combined approach with an aspiration catheter appears effective for primary medium vessel occlusions across several centers and physicians.
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Affiliation(s)
- Maud Wang
- Department of Radiology, Leuven University Hospitals, Leuven, Belgium.
| | - Hans Henkes
- Neuroradiologische Klinik, Klinikum Stuttgart, Stuttgart, Germany
| | - Sherief Ghozy
- Departments of Neurologic Surgery & Radiology, Mayo Clinic, Rochester, MN, USA
| | - James E Siegler
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | - Hamza Shaikh
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | - Jane Khalife
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | - Mohamad Abdalkader
- Departments of Radiology & Neurology, Boston Medical Center, Boston, MA, USA
| | - Piers Klein
- Departments of Radiology & Neurology, Boston Medical Center, Boston, MA, USA
| | - Thanh N Nguyen
- Departments of Radiology & Neurology, Boston Medical Center, Boston, MA, USA
| | - Jeremy J Heit
- Department of Interventional Neuroradiology, Stanford Medical Center, Palo Alto, CA, USA
| | - Ahmad Sweid
- Departments of Neurologic Surgery & Radiology, Mayo Clinic, Rochester, MN, USA
| | - Kareem El Naamani
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Robert W Regenhardt
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - Jose Danilo Bengzon Diestro
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael's Hospital, Toronto, ON, Canada
| | - Nicole M Cancelliere
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael's Hospital, Toronto, ON, Canada
| | - Abdelaziz Amllay
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Lukas Meyer
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anne Dusart
- Department of Neurology, Hôpital Civil Marie Curie, Charleroi, Belgium
| | - Flavio Bellante
- Department of Neurology, Hôpital Civil Marie Curie, Charleroi, Belgium
| | - Géraud Forestier
- Department of Neuroradiology, CHU Limoges Dupuytren, Université de Limoges, Limoges, France
| | - Aymeric Rouchaud
- Department of Neuroradiology, CHU Limoges Dupuytren, Université de Limoges, Limoges, France
| | - Suzana Saleme
- Department of Neuroradiology, CHU Limoges Dupuytren, Université de Limoges, Limoges, France
| | - Charbel Mounayer
- Department of Neuroradiology, CHU Limoges Dupuytren, Université de Limoges, Limoges, France
| | - Jens Fiehler
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anna Luisa Kühn
- Department of Radiology, University of Massachusetts Memorial Hospital, Worcester, MA, USA
| | - Ajit S Puri
- Department of Radiology, University of Massachusetts Memorial Hospital, Worcester, MA, USA
| | - Christian Dyzmann
- Department of Neuroradiology, Sana Kliniken, Lübeck GmbH, Lübeck, Germany
| | - Peter T Kan
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, USA
| | - Marco Colasurdo
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, USA
| | - Gaultier Marnat
- Department of Interventional Neuroradiology, CHU Bordeaux, Bordeaux, France
| | - Jérôme Berge
- Department of Interventional Neuroradiology, CHU Bordeaux, Bordeaux, France
| | - Xavier Barreau
- Department of Interventional Neuroradiology, CHU Bordeaux, Bordeaux, France
| | - Igor Sibon
- Department of Neurology, CHU Bordeaux, Bordeaux, France
| | - Simona Nedelcu
- Department of Neurology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Nils Henninger
- Department of Neurology, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Department of Psychiatry, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Charlotte Weyland
- Department of Neuroradiology, University Hospital RWTH Aachen, Aachen, Germany
| | - Thomas R Marotta
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael's Hospital, Toronto, ON, Canada
| | - Christopher J Stapleton
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - James D Rabinov
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - Takahiro Ota
- Department of Neurosurgery, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Shogo Dofuku
- Department of Neurosurgery, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Leonard Ll Yeo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Benjamin Y Q Tan
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Division of Neurology, Department of Medicine, National University Hospital, Singapore, Singapore
| | | | | | - Sunil Sheth
- Department of Neurology, UTHealth McGovern Medical School, Houston, TX, USA
| | - Leonardo Renieri
- Interventistica Neurovascolare, Ospedale Careggi Di Firenze, Florence, Italy
| | - Carolina Capirossi
- Interventistica Neurovascolare, Ospedale Careggi Di Firenze, Florence, Italy
| | - Ashkan Mowla
- Division of Stroke and Endovascular Neurosurgery, Department of Neurological Surgery, Keck School of Medicine, University of Southern California (USC), Los Angeles, CA, USA
| | | | - Pascal Jabbour
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Priyank Khandelwal
- Department of Endovascular Neurosurgery and Neuroradiology NJMS, Newark, NJ, USA
| | - Arundhati Biswas
- Department of Neurosurgery, Westchester Medical Center at New York Medical College, Valhalla, NY, USA
| | - Frédéric Clarençon
- Department of Neuroradiology, Pitié-Salpêtrière University Hospitals, Sorbonne University- Paris VI, Paris, France
| | - Mahmoud Elhorany
- Department of Neuroradiology, Pitié-Salpêtrière University Hospitals, Sorbonne University- Paris VI, Paris, France
- Department of Neurology, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Kevin Premat
- Department of Neuroradiology, Pitié-Salpêtrière University Hospitals, Sorbonne University- Paris VI, Paris, France
| | - Iacopo Valente
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Alessandro Pedicelli
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - João Pedro Filipe
- Department of Diagnostic and Interventional Neuroradiology, Centro Hospitalar Universitário Do Porto, Porto, Portugal
| | - Ricardo Varela
- Department of Neurology, Centro Hospitalar Universitário Do Porto, Porto, Portugal
| | | | - Nestor R Gonzalez
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Markus A Möhlenbruch
- Sektion Vaskuläre Und Interventionelle Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Jessica Jesser
- Sektion Vaskuläre Und Interventionelle Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Vincent Costalat
- Department of Neuroradiology, Gui de Chauliac Hospital, CHU Montpellier, Montpellier, France
| | - Adrien Ter Schiphorst
- Department of Neurology, Gui de Chauliac Hospital, CHU Montpellier, Montpellier, France
| | - Vivek Yedavalli
- Department of Radiology, Division of Neuroradiology, Johns Hopkins Medical Center, Baltimore, MD, USA
| | - Pablo Harker
- Department of Neurology, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Lina M Chervak
- Department of Neurology, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Yasmin Aziz
- Department of Neurology, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Benjamin Gory
- Department of Interventional Neuroradiology, CHU Nancy, Nancy, France
| | - Christian Paul Stracke
- Department of Radiology, Interventional Neuroradiology Section, University Medical Center Münster, Münster, Germany
| | - Constantin Hecker
- Departments of Neurology & Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Monika Killer-Oberpfalzer
- Departments of Neurology & Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Christoph J Griessenauer
- Departments of Neurology & Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Ajith J Thomas
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | | | - David S Liebeskind
- Department of Neurology Department, UCLA Stroke Center, UCLA, Los Angeles, CA, USA
| | - Răzvan Alexandru Radu
- Department of Neuroradiology, Gui de Chauliac Hospital, CHU Montpellier, Montpellier, France
| | - Andrea M Alexandre
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Illario Tancredi
- Department of Radiology, Hôpital Civil Marie Curie, Charleroi, Belgium
| | - Tobias D Faizy
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Aman B Patel
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - Vitor Mendes Pereira
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael's Hospital, Toronto, ON, Canada
| | - Robert Fahed
- Department of Medicine, Division of Neurology, The Ottawa Hospital, Ottawa Hospital Research Institute and University of Ottawa, Ottawa, ON, Canada
| | - Boris Lubicz
- Department of Interventional Neuroradiology, Erasme University Hospital, Brussels, Belgium
| | - Adam A Dmytriw
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael's Hospital, Toronto, ON, Canada
| | - Adrien Guenego
- Department of Interventional Neuroradiology, Erasme University Hospital, Brussels, Belgium
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3
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Zhang M, Olivero WC, Huston JM, Pappu S, Arnold PM, Biswas A, Anderson AT, Sutton BP. Measuring CSF shunt flow with MRI using flow enhancement of signal intensity (FENSI). Magn Reson Med 2024. [PMID: 38469904 DOI: 10.1002/mrm.30079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 02/18/2024] [Accepted: 02/21/2024] [Indexed: 03/13/2024]
Abstract
PURPOSE To develop and validate a noninvasive imaging technique for accurately assessing very slow CSF flow within shunt tubes in pediatric patients with hydrocephalus, aiming to identify obstructions that might impede CSF drainage. THEORY AND METHODS A simulation of shunt flow enhancement of signal intensity (shunt-FENSI) signal is used to establish the relationship between signal change and flow rate. The quantification of flow enhancement of signal intensity data involves normalization, curve fitting, and calibration to match simulated data. Additionally, a phase sweep method is introduced to accommodate the impact of magnetic field inhomogeneity on the flow measurement. The method is tested in flow phantoms, healthy adults, intensive care unit patients with external ventricular drains (EVD), and shunt patients. EVDs enable shunt-flow measurements to be acquired with a ground truth measure of CSF drainage. RESULTS The flow-rate-to-signal simulation establishes signal-flow relationships and takes into account the T1 of draining fluid. The phase sweep method accurately accounts for phase accumulation due to frequency offsets at the shunt. Results in phantom and healthy human participants reveal reliable quantification of flow rates using controlled flows and agreement with the flow simulation. EVD patients display reliable measures of flow rates. Shunt patient results demonstrate feasibility of the method and consistent flow rates for functional shunts. CONCLUSION The results demonstrate the technique's applicability, accuracy, and potential for diagnosing and noninvasively monitoring hydrocephalus. Limitations of the current approach include a high sensitivity to motion and strict requirement of imaging slice prescription.
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Affiliation(s)
- Mingxiao Zhang
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- Beckman Institute, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - William C Olivero
- Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- Department of Neurosurgery, Carle Foundation Hospital, Urbana, Illinois, USA
| | - Jason M Huston
- Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- Department of Radiology, Carle Foundation Hospital, Urbana, Illinois, USA
| | - Suguna Pappu
- Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- Department of Neurosurgery, Carle Foundation Hospital, Urbana, Illinois, USA
| | - Paul M Arnold
- Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- Department of Neurosurgery, Carle Foundation Hospital, Urbana, Illinois, USA
| | - Arundhati Biswas
- Department of Neurosurgery, Carle Foundation Hospital, Urbana, Illinois, USA
| | - Aaron T Anderson
- Beckman Institute, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Bradley P Sutton
- Department of Bioengineering, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- Beckman Institute, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
- Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
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4
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Radu RA, Costalat V, Fahed R, Ghozy S, Siegler JE, Shaikh H, Khalife J, Abdalkader M, Klein P, Nguyen TN, Heit JJ, Sweid A, El Naamani K, Regenhardt RW, Diestro JDB, Cancelliere NM, Amllay A, Meyer L, Dusart A, Bellante F, Forestier G, Rouchaud A, Saleme S, Mounayer C, Fiehler J, Kühn AL, Puri AS, Dyzmann C, Kan PT, Colasurdo M, Marnat G, Berge J, Barreau X, Sibon I, Nedelcu S, Henninger N, Kyheng M, Marotta TR, Stapleton CJ, Rabinov JD, Ota T, Dofuku S, Yeo LLL, Tan BYQ, Martinez-Gutierrez JC, Salazar-Marioni S, Sheth S, Renieri L, Capirossi C, Mowla A, Tjoumakaris SI, Jabbour P, Khandelwal P, Biswas A, Clarençon F, Elhorany M, Premat K, Valente I, Pedicelli A, Pedro Filipe J, Varela R, Quintero-Consuegra M, Gonzalez NR, Möhlenbruch MA, Jesser J, Tancredi I, ter Schiphorst A, Yedavalli V, Harker P, Chervak LM, Aziz Y, Gory B, Paul Stracke C, Hecker C, Killer-Oberpfalzer M, Griessenauer CJ, Thomas AJ, Hsieh CY, Liebeskind DS, Alexandre AM, Faizy TD, Weyland C, Patel AB, Pereira VM, Lubicz B, Dmytriw AA, Guenego A. First pass effect as an independent predictor of functional outcomes in medium vessel occlusions: An analysis of an international multicenter study. Eur Stroke J 2024; 9:114-123. [PMID: 37885243 PMCID: PMC10916815 DOI: 10.1177/23969873231208276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 09/15/2023] [Indexed: 10/28/2023] Open
Abstract
INTRODUCTION First pass effect (FPE), achievement of complete recanalization (mTICI 2c/3) with a single pass, is a significant predictor of favorable outcomes for endovascular treatment (EVT) in large vessel occlusion stroke (LVO). However, data concerning the impact on functional outcomes and predictors of FPE in medium vessel occlusions (MeVO) are scarce. PATIENTS AND METHODS We conducted an international retrospective study on MeVO cases. Multivariable logistic modeling was used to establish independent predictors of FPE. Clinical and safety outcomes were compared between the two study groups (FPE vs non-FPE) using logistic regression models. Good outcome was defined as modified Rankin Scale 0-2 at 3 months. RESULTS Eight hundred thirty-six patients with a final mTICI ⩾ 2b were included in this analysis. FPE was observed in 302 patients (36.1%). In multivariable analysis, hypertension (aOR 1.55, 95% CI 1.10-2.20) and lower baseline NIHSS score (aOR 0.95, 95% CI 0.93-0.97) were independently associated with an FPE. Good outcomes were more common in the FPE versus non-FPE group (72.8% vs 52.8%), and FPE was independently associated with favorable outcome (aOR 2.20, 95% CI 1.59-3.05). 90-day mortality and intracranial hemorrhage (ICH) were significantly lower in the FPE group, 0.43 (95% CI, 0.25-0.72) and 0.55 (95% CI, 0.39-0.77), respectively. CONCLUSION Over 2/3 of patients with MeVOs and FPE in our cohort had a favorable outcome at 90 days. FPE is independently associated with favorable outcomes, it may reduce the risk of any intracranial hemorrhage, and 3-month mortality.
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Affiliation(s)
- Răzvan Alexandru Radu
- Department of Neuroradiology, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France
| | - Vincent Costalat
- Department of Neuroradiology, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France
| | - Robert Fahed
- Division of Neurology, Department of Medicine, The Ottawa Hospital, Ottawa Hospital Research Institute and University of Ottawa, Ottawa, ON, Canada
| | - Sherief Ghozy
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - James E Siegler
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowan University, Camden, NJ, USA
| | - Hamza Shaikh
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowan University, Camden, NJ, USA
| | - Jane Khalife
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowan University, Camden, NJ, USA
| | - Mohamad Abdalkader
- Departments of Radiology & Neurology, Boston Medical Center, Boston, MA, USA
| | - Piers Klein
- Departments of Radiology & Neurology, Boston Medical Center, Boston, MA, USA
| | - Thanh N Nguyen
- Departments of Radiology & Neurology, Boston Medical Center, Boston, MA, USA
| | - Jeremy J Heit
- Department of Interventional Neuroradiology, Stanford Medical Center, Palo Alto, CA, USA
| | - Ahmad Sweid
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Kareem El Naamani
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Robert W Regenhardt
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - Jose Danilo Bengzon Diestro
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael’s Hospital, Toronto, ON, Canada
| | - Nicole M Cancelliere
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael’s Hospital, Toronto, ON, Canada
| | - Abdelaziz Amllay
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Lukas Meyer
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anne Dusart
- Department of Neurology, Hôpital Civil Marie Curie, Charleroi, Belgium
| | - Flavio Bellante
- Department of Neurology, Hôpital Civil Marie Curie, Charleroi, Belgium
| | - Géraud Forestier
- University Hospital of Limoges, Neuroradiology Department, Dupuytren, Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France
| | - Aymeric Rouchaud
- University Hospital of Limoges, Neuroradiology Department, Dupuytren, Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France
| | - Suzana Saleme
- University Hospital of Limoges, Neuroradiology Department, Dupuytren, Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France
| | - Charbel Mounayer
- University Hospital of Limoges, Neuroradiology Department, Dupuytren, Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France
| | - Jens Fiehler
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anna Luisa Kühn
- Department of Radiology, University of Massachusetts Memorial Hospital, Worcester, MA, USA
| | - Ajit S Puri
- Department of Radiology, University of Massachusetts Memorial Hospital, Worcester, MA, USA
| | - Christian Dyzmann
- Department of Diagnostic and Interventional Radiology and Neuroradiology, Sana Klinik Lübeck, Lübeck, Germany
| | - Peter T Kan
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, Texas, USA
| | - Marco Colasurdo
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, Texas, USA
| | - Gaultier Marnat
- Interventional Neuroradiology Department, Bordeaux University Hospital, Bordeaux, France
| | - Jérôme Berge
- Interventional Neuroradiology Department, Bordeaux University Hospital, Bordeaux, France
| | - Xavier Barreau
- Interventional Neuroradiology Department, Bordeaux University Hospital, Bordeaux, France
| | - Igor Sibon
- Neurology Department, Bordeaux University Hospital, Bordeaux, France
| | - Simona Nedelcu
- Department of Neurology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Nils Henninger
- Department of Neurology, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Department of Psychiatry, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Maéva Kyheng
- Department of Biostatistics, CHU Lille, Lille, France
| | - Thomas R Marotta
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael’s Hospital, Toronto, ON, Canada
| | - Christopher J Stapleton
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - James D Rabinov
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - Takahiro Ota
- Department of Neurosurgery, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Shogo Dofuku
- Department of Neurosurgery, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Leonard LL Yeo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Benjamin YQ Tan
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Division of Neurology, Department of Medicine, National University Hospital, Singapore
| | | | | | - Sunil Sheth
- Department of Neurology, UTHealth McGovern Medical School, Houston, TX, USA
| | - Leonardo Renieri
- Interventistica Neurovascolare, Ospedale Careggi di Firenze, Florence, Italy
| | - Carolina Capirossi
- Interventistica Neurovascolare, Ospedale Careggi di Firenze, Florence, Italy
| | - Ashkan Mowla
- Division of Stroke and Endovascular Neurosurgery, Department of Neurological Surgery, Keck School of Medicine, University of Southern California (USC), Los Angeles, CA, USA
| | | | - Pascal Jabbour
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Priyank Khandelwal
- Department of Endovascular Neurosurgery and Neuroradiology, NJMS, Newark, NJ, USA
| | - Arundhati Biswas
- Department of Neurosurgery, Westchester Medical Center at New York Medical College, Valhalla, NY, USA
| | - Frédéric Clarençon
- Department of Neuroradiology, Pitié-Salpêtrière Hospital. Paris. France; GRC BioFast, Sorbonne University, Paris VI, France
| | - Mahmoud Elhorany
- Department of Neuroradiology, Pitié-Salpêtrière Hospital. Paris. France; GRC BioFast, Sorbonne University, Paris VI, France
- Neurology Department, Faculty of Medicine, Tanta University, Egypt
| | - Kevin Premat
- Department of Neuroradiology, Pitié-Salpêtrière Hospital. Paris. France; GRC BioFast, Sorbonne University, Paris VI, France
| | - Iacopo Valente
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A.Gemelli IRCCS, Roma, Italy
| | - Alessandro Pedicelli
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A.Gemelli IRCCS, Roma, Italy
| | - João Pedro Filipe
- Department of Diagnostic and Interventional Neuroradiology, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - Ricardo Varela
- Department of Neurology, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | | | - Nestor R Gonzalez
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Markus A Möhlenbruch
- Sektion Vaskuläre und Interventionelle Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Jessica Jesser
- Sektion Vaskuläre und Interventionelle Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Illario Tancredi
- Department of Radiology, Hôpital Civil Marie Curie, Charleroi, Belgium
| | - Adrien ter Schiphorst
- Department of Neurology, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France
| | - Vivek Yedavalli
- Division of Neuroradiology, Department of Radiology, Johns Hopkins Medical Center, Baltimore, Maryland, USA
| | - Pablo Harker
- Department of Neurology, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Lina M Chervak
- Department of Neurology, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Yasmin Aziz
- Department of Neurology, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Benjamin Gory
- Department of Interventional Neuroradiology, Nancy University Hospital, Nancy, France
| | - Christian Paul Stracke
- Department of Radiology, Interventional Neuroradiology Section, University Medical Center Münster, Münster, Germany
| | - Constantin Hecker
- Departments of Neurology & Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University, Salzburg, Austria
| | - Monika Killer-Oberpfalzer
- Departments of Neurology & Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University, Salzburg, Austria
| | - Christoph J Griessenauer
- Departments of Neurology & Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University, Salzburg, Austria
| | - Ajith J Thomas
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowan University, Camden, NJ, USA
| | | | - David S Liebeskind
- UCLA Stroke Center and Department of Neurology Department, UCLA, Los Angeles, CA, USA
| | - Andrea M Alexandre
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A.Gemelli IRCCS, Roma, Italy
| | - Tobias D Faizy
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Charlotte Weyland
- Sektion Vaskuläre und Interventionelle Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Aman B Patel
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - Vitor Mendes Pereira
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael’s Hospital, Toronto, ON, Canada
| | - Boris Lubicz
- Department of Interventional Neuroradiology, Erasme University Hospital, Brussels, Belgium
| | - Adam A Dmytriw
- Neuroendovascular Program, Massachusetts General Hospital, Harvard University, Boston, MA, USA
- Neurovascular Centre, Departments of Medical Imaging and Neurosurgery, St. Michael’s Hospital, Toronto, ON, Canada
| | - Adrien Guenego
- Department of Interventional Neuroradiology, Erasme University Hospital, Brussels, Belgium
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5
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Lahiri D, Krishna KVM, Verma AK, Modak P, Vishwanadh B, Chattopadhyay S, Shibata T, Sharma SK, Sarkar SK, Clifton PH, Biswas A, Garg N, K Dey G. Comprehensive characterization of the structure of Zr-based metallic glasses. Sci Rep 2024; 14:4911. [PMID: 38418473 PMCID: PMC10902397 DOI: 10.1038/s41598-024-53509-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 02/01/2024] [Indexed: 03/01/2024] Open
Abstract
Structure of metallic glasses fascinates as the generic amorphous structural template for ubiquitous systems. Its specification necessitates determination of the complete hierarchical structure, starting from short-range-order (SRO) → medium-range-order (MRO) → bulk structure and free volume (FV) distribution. This link has largely remained elusive since previous investigations adopted one-technique-at-a-time approach, focusing on limited aspects of any one domain. Reconstruction of structure from experimental data inversion is non-unique for many of these techniques. As a result, complete and precise structural understanding of glass has not emerged yet. In this work, we demonstrate the first experimental pathway for reconstruction of the integrated structure, forZr 67 Ni 33 andZr 52 Ti 6 Al 10 Cu 18 Ni 14 glasses. Our strategy engages diverse (× 7) multi-scale techniques [XAFS, 3D-APT, ABED/NBED, FEM, XRD, PAS, FHREM] on the same glass. This strategy complemented mutual limitations of techniques and corroborated common parameters to generate complete, self-consistent and precise parameters. Further, MRO domain size and inter-void separation were correlated to identify the presence of FV at MRO boundaries. This enabled the first experimental reconstruction of hierarchical subset: SRO → MRO → FV → bulk structure. The first ever image of intermediate region between MRO domains emerged from this link. We clarify that determination of all subsets is not our objective; the essence and novelty of this work lies in directing the pathway towards finite solution, in the most logical and unambiguous way.
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Affiliation(s)
- Debdutta Lahiri
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
| | - K V Mani Krishna
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Ashok K Verma
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
| | - P Modak
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - B Vishwanadh
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Soma Chattopadhyay
- Physical Sciences Department, Elgin Community College, 1700 Spartan Drive, Elgin, IL, 60123, USA
| | - Tomohiro Shibata
- Materials Science, Kennametal Inc., 1600 Technology Way, Latrobe, PA, 15650, USA
| | - S K Sharma
- Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Sudip Kumar Sarkar
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | | | - A Biswas
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Nandini Garg
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - G K Dey
- Materials Group, Bhabha Atomic Research Centre, Mumbai, 400085, India
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6
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Dmytriw AA, Musmar B, Salim H, Ghozy S, Siegler JE, Kobeissi H, Shaikh H, Khalife J, Abdalkader M, Klein P, Nguyen TN, Heit JJ, Regenhardt RW, Cancelliere NM, Bernstock JD, Naamani KE, Amllay A, Meyer L, Dusart A, Bellante F, Forestier G, Rouchaud A, Saleme S, Mounayer C, Fiehler J, Kühn AL, Puri AS, Dyzmann C, Kan PT, Colasurdo M, Marnat G, Berge J, Barreau X, Sibon I, Nedelcu S, Henninger N, Marotta TR, Stapleton CJ, Rabinov JD, Ota T, Dofuku S, Yeo LL, Tan BY, Gopinathan A, Martinez-Gutierrez JC, Salazar-Marioni S, Sheth S, Renieri L, Capirossi C, Mowla A, Chervak L, Vagal A, Adeeb N, Cuellar-Saenz HH, Tjoumakaris SI, Jabbour P, Khandelwal P, Biswas A, Clarençon F, Elhorany M, Premat K, Valente I, Pedicelli A, Filipe JP, Varela R, Quintero-Consuegra M, Gonzalez NR, Möhlenbruch MA, Jesser J, Costalat V, Ter Schiphorst A, Yedavalli V, Harker P, Aziz Y, Gory B, Stracke CP, Hecker C, Kadirvel R, Killer-Oberpfalzer M, Griessenauer CJ, Thomas AJ, Hsieh CY, Liebeskind DS, Alexandru Radu R, Alexandre AM, Tancredi I, Faizy TD, Fahed R, Weyland C, Lubicz B, Patel AB, Pereira VM, Guenego A. Incidence and clinical outcomes of perforations during mechanical thrombectomy for medium vessel occlusion in acute ischemic stroke: A retrospective, multicenter, and multinational study. Eur Stroke J 2024:23969873231219412. [PMID: 38409796 DOI: 10.1177/23969873231219412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024] Open
Abstract
BACKGROUND Mechanical thrombectomy (MT) has revolutionized the treatment of acute ischemic stroke (AIS) due to large vessel occlusion (LVO), but its efficacy and safety in medium vessel occlusion (MeVO) remain less explored. This multicenter, retrospective study aims to investigate the incidence and clinical outcomes of vessel perforations (confirmed by extravasation during an angiographic series) during MT for AIS caused by MeVO. METHODS Data were collected from 37 academic centers across North America, Asia, and Europe between September 2017 and July 2021. A total of 1373 AIS patients with MeVO underwent MT. Baseline characteristics, procedural details, and clinical outcomes were analyzed. RESULTS The incidence of vessel perforation was 4.8% (66/1373). Notably, our analysis indicates variations in perforation rates across different arterial segments: 8.9% in M3 segments, 4.3% in M2 segments, and 8.3% in A2 segments (p = 0.612). Patients with perforation had significantly worse outcomes, with lower rates of favorable angiographic outcomes (TICI 2c-3: 23% vs 58.9%, p < 0.001; TICI 2b-3: 56.5% vs 88.3%, p < 0.001). Functional outcomes were also worse in the perforation group (mRS 0-1 at 3 months: 22.7% vs 36.6%, p = 0.031; mRS 0-2 at 3 months: 28.8% vs 53.9%, p < 0.001). Mortality was higher in the perforation group (30.3% vs 16.8%, p = 0.008). CONCLUSION This study reveals that while the occurrence of vessel perforation in MT for AIS due to MeVO is relatively rare, it is associated with poor functional outcomes and higher mortality. The findings highlight the need for increased caution and specialized training in performing MT for MeVO. Further prospective research is required for risk mitigation strategies.
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Affiliation(s)
- Adam A Dmytriw
- Neuroendovascular Program, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Neurovascular Centre, Divisions of Therapeutic Neuroradiology and Neurosurgery, St. Michael's Hospital, University of Toronto, ON, Canada
| | - Basel Musmar
- Department of Neurosurgery and Interventional Neuroradiology, Louisiana State University, Shreveport, LA, USA
| | - Hamza Salim
- Department of Radiology, Division of Neuroradiology, Johns Hopkins Medical Center, Baltimore, MD, USA
| | - Sherief Ghozy
- Department of Neurological Surgery and Radiology, Mayo Clinic, Rochester, MN, USA
| | - James E Siegler
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | - Hassan Kobeissi
- Department of Neurological Surgery and Radiology, Mayo Clinic, Rochester, MN, USA
| | - Hamza Shaikh
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | - Jane Khalife
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | - Mohamad Abdalkader
- Departments of Radiology and Neurology, Boston Medical Center, Boston, MA, USA
| | - Piers Klein
- Departments of Radiology and Neurology, Boston Medical Center, Boston, MA, USA
| | - Thanh N Nguyen
- Departments of Radiology and Neurology, Boston Medical Center, Boston, MA, USA
| | - Jeremy J Heit
- Department of Interventional Neuroradiology, Stanford Medical Center, Palo Alto, CA, USA
| | - Robert W Regenhardt
- Neuroendovascular Program, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Nicole M Cancelliere
- Neurovascular Centre, Divisions of Therapeutic Neuroradiology and Neurosurgery, St. Michael's Hospital, University of Toronto, ON, Canada
| | - Joshua D Bernstock
- Department of Neurosurgery, Brigham and Women's Hospital, Boston, MA, USA
| | - Kareem El Naamani
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Abdelaziz Amllay
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Lukas Meyer
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anne Dusart
- Department of Neurology, Hôpital Civil Marie Curie, Charleroi, Belgium
| | - Flavio Bellante
- Department of Neurology, Hôpital Civil Marie Curie, Charleroi, Belgium
| | - Géraud Forestier
- University Hospital of Limoges, Neuroradiology Department, Dupuytren, Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France
| | - Aymeric Rouchaud
- University Hospital of Limoges, Neuroradiology Department, Dupuytren, Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France
| | - Suzana Saleme
- University Hospital of Limoges, Neuroradiology Department, Dupuytren, Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France
| | - Charbel Mounayer
- University Hospital of Limoges, Neuroradiology Department, Dupuytren, Université de Limoges, XLIM CNRS, UMR 7252, Limoges, France
| | - Jens Fiehler
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anna Luisa Kühn
- Division of Neurointerventional Radiology, Department of Radiology, University of Massachusetts Medical Center, Worcester, MA, USA
| | - Ajit S Puri
- Division of Neurointerventional Radiology, Department of Radiology, University of Massachusetts Medical Center, Worcester, MA, USA
| | - Christian Dyzmann
- Neuroradiology Department, Sana Kliniken, Lübeck GmbH, Lübeck, Germany
| | - Peter T Kan
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, USA
| | - Marco Colasurdo
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX, USA
- Department of Interventional Radiology, Oregon Health and Science University, Portland, OR, USA
| | - Gaultier Marnat
- Interventional Neuroradiology Department, Bordeaux University Hospital, Bordeaux, France
| | - Jérôme Berge
- Interventional Neuroradiology Department, Bordeaux University Hospital, Bordeaux, France
| | - Xavier Barreau
- Interventional Neuroradiology Department, Bordeaux University Hospital, Bordeaux, France
| | - Igor Sibon
- Neurology Department, Bordeaux University Hospital, Bordeaux, France
| | - Simona Nedelcu
- Department of Neurology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Nils Henninger
- Department of Neurology, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Department of Psychiatry, University of Massachusetts Chan Medical School, Worcester, MA, USA
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Thomas R Marotta
- Neurovascular Centre, Divisions of Therapeutic Neuroradiology and Neurosurgery, St. Michael's Hospital, University of Toronto, ON, Canada
| | - Christopher J Stapleton
- Neuroendovascular Program, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - James D Rabinov
- Neuroendovascular Program, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Takahiro Ota
- Department of Neurosurgery, Tokyo Metropolitan Tama Medical Center, Fuchu, Japan
| | - Shogo Dofuku
- Department of Neurosurgery, Tokyo Metropolitan Tama Medical Center, Fuchu, Japan
| | - Leonard Ll Yeo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Benjamin Yq Tan
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Division of Neurology, Department of Medicine, National University Hospital, Singapore, Singapore
| | - Anil Gopinathan
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Division of Neurology, Department of Medicine, National University Hospital, Singapore, Singapore
| | | | | | - Sunil Sheth
- Interventistica Neurovascolare, Ospedale Careggi di Firenze, Florence, Italy
| | - Leonardo Renieri
- Interventistica Neurovascolare, Ospedale Careggi di Firenze, Florence, Italy
| | - Carolina Capirossi
- Interventistica Neurovascolare, Ospedale Careggi di Firenze, Florence, Italy
| | - Ashkan Mowla
- Division of Stroke and Endovascular Neurosurgery, Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Lina Chervak
- Department of Neurology and Radiology, University of Cincinnati, Cincinnati, OH, USA
| | - Achala Vagal
- Department of Neurology and Radiology, University of Cincinnati, Cincinnati, OH, USA
| | - Nimer Adeeb
- Department of Neurosurgery and Interventional Neuroradiology, Louisiana State University, Shreveport, LA, USA
| | - Hugo H Cuellar-Saenz
- Department of Neurosurgery and Interventional Neuroradiology, Louisiana State University, Shreveport, LA, USA
| | | | - Pascal Jabbour
- Department of Neurosurgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Priyank Khandelwal
- Department of Endovascular Neurosurgery and Neuroradiology, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Arundhati Biswas
- Department of Neurosurgery, Westchester Medical Center at New York Medical College, Valhalla, NY, USA
| | - Frédéric Clarençon
- Department of Neuroradiology, Pitié-Salpêtrière Hospital, Paris, France
- GRC BioFast, Sorbonne University, Paris VI, Paris, France
| | - Mahmoud Elhorany
- Department of Neuroradiology, Pitié-Salpêtrière Hospital, Paris, France
- GRC BioFast, Sorbonne University, Paris VI, Paris, France
- Neurology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Kevin Premat
- Department of Neuroradiology, Pitié-Salpêtrière Hospital, Paris, France
- GRC BioFast, Sorbonne University, Paris VI, Paris, France
| | - Iacopo Valente
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A. Gemelli IRCCS Roma, Florence, Italy
| | - Alessandro Pedicelli
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A. Gemelli IRCCS Roma, Florence, Italy
| | - João Pedro Filipe
- Department of Diagnostic and Interventional Neuroradiology, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - Ricardo Varela
- Department of Diagnostic and Interventional Neuroradiology, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | | | - Nestor R Gonzalez
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Markus A Möhlenbruch
- Sektion Vaskuläre und Interventionelle Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Jessica Jesser
- Sektion Vaskuläre und Interventionelle Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Vincent Costalat
- Department of Neuroradiology, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France
| | - Adrien Ter Schiphorst
- Department of Neurology, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France
| | - Vivek Yedavalli
- INSERM U1254, IADI, Université de Lorraine, Vandoeuvre-les-Nancy, France
| | - Pablo Harker
- Department of Neurology, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Yasmin Aziz
- Department of Neurology, University of Cincinnati Medical Center, Cincinnati, OH, USA
| | - Benjamin Gory
- Department of Interventional Neuroradiology, Nancy University Hospital, Nancy, France
- INSERM U1254, IADI, Université de Lorraine, Vandoeuvre-les-Nancy, France
| | - Christian Paul Stracke
- Department of Radiology, Interventional Neuroradiology Section, University Medical Center Münster, Münster, Germany
| | - Constantin Hecker
- Department of Neurology and Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University, Salzburg, Austria
| | - Ramanathan Kadirvel
- Department of Neurological Surgery and Radiology, Mayo Clinic, Rochester, MN, USA
| | - Monika Killer-Oberpfalzer
- Department of Neurology and Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University, Salzburg, Austria
| | - Christoph J Griessenauer
- Department of Neurology and Neurosurgery, Christian Doppler Clinic, Paracelsus Medical University, Salzburg, Austria
| | - Ajith J Thomas
- Cooper Neurological Institute, Cooper University Hospital, Cooper Medical School of Rowen University, Camden, NJ, USA
| | | | - David S Liebeskind
- UCLA Stroke Center and Department of Neurology Department, University of California, Los Angeles, Los Angeles, CA USA
| | - Răzvan Alexandru Radu
- Department of Neuroradiology, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France
| | - Andrea M Alexandre
- UOSA Neuroradiologia Interventistica, Fondazione Policlinico Universitario A. Gemelli IRCCS Roma, Florence, Italy
| | - Illario Tancredi
- Department of Radiology, Hôpital Civil Marie Curie, Charleroi, Belgium
| | - Tobias D Faizy
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Robert Fahed
- Division of Neurology, Department of Medicine, The Ottawa Hospital, Ottawa Hospital Research Institute and University of Ottawa, Ottawa, ON, Canada
| | - Charlotte Weyland
- Sektion Vaskuläre und Interventionelle Neuroradiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Boris Lubicz
- Department of Diagnostic and Interventional Neuroradiology, Erasme University Hospital, Brussels, Belgium
| | - Aman B Patel
- Neuroendovascular Program, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Vitor Mendes Pereira
- Neurovascular Centre, Divisions of Therapeutic Neuroradiology and Neurosurgery, St. Michael's Hospital, University of Toronto, ON, Canada
| | - Adrien Guenego
- Department of Diagnostic and Interventional Neuroradiology, Erasme University Hospital, Brussels, Belgium
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Ivaškevičius V, Biswas A, Singh S, Stulpinaitė U, Reda S, Rühl H, Pezeshkpoor B, Pavlova A, Oldenburg J. Fibrinogen Bonn (p. Arg510Cys) in the Aα-Chain Is Associated with High Risk of Venous Thrombosis. Hamostaseologie 2023; 43:440-446. [PMID: 37442158 DOI: 10.1055/a-2094-7191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/15/2023] Open
Abstract
INTRODUCTION Inherited dysfibrinogenemia is a qualitative defect of fibrinogen caused by various mutations among three fibrinogen genes. Dysfibrinogenemia can be associated with an increased risk of thrombosis, bleeding, or both. Here, we report a 36-year-old female with dysfibrinogenemia who experienced two successful pregnancies under thromboprophylaxis after cerebral venous sinus thrombosis (CVST). PATIENTS AND METHODS In addition to plasmatic coagulation tests, fibrinogen genes FGA, FGB, and FGG were screened using direct genomic DNA sequencing. The structural-functional implications of the detected mutation were analyzed in silico. RESULTS Inherited dysfibrinogenemia was diagnosed in an index patient after CVST in a risk situation. Anticoagulation with warfarin was stopped after 12 months when the first pregnancy was planned. Pregnancy and spontaneous delivery (2020) was uncomplicated. A second pregnancy was interrupted because of acute cytomegalovirus infection and the third pregnancy was successful in 2022. Pregnancies were accompanied by thromboprophylaxis with enoxaparin 40 mg once daily until 6 weeks postpartum. Substitution of fibrinogen has not become necessary in the index patient so far. Genetic analysis revealed a novel missense mutation (p. Arg510Cys) in the FGA gene ("fibrinogen Bonn") in the index patient, as well as an asymptomatic sister, and their father who experienced recurrent pulmonary embolism. Surface exposure of wild-type Arg510 suggested the mutated Cys510 to form nonnative disulfide bonds with surface-exposed reactive cysteines from other plasma proteins like albumin leading to formation of aggregates and impaired fibrinolysis. CONCLUSIONS Fibrinogen Bonn might be associated with an increased risk of thrombosis, possibly due to impaired polymerization.
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Affiliation(s)
- V Ivaškevičius
- Institute for Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
| | - A Biswas
- Institute for Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
| | - S Singh
- Institute for Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
| | - U Stulpinaitė
- Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - S Reda
- Institute for Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
| | - H Rühl
- Institute for Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
| | - B Pezeshkpoor
- Institute for Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
| | - A Pavlova
- Institute for Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
| | - J Oldenburg
- Institute for Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
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Biswas A, Roy S, Ghosh V, Kumar L, Sharma A, Gupta R, Mallick S. Clinical Outcome and Patterns of Failure in Patients with Solitary Plasmacytoma Treated with Radical Radiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:S109. [PMID: 37784287 DOI: 10.1016/j.ijrobp.2023.06.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) We intended to assess the patterns of care and failure in patients with solitary plasmacytoma (SP), treated at our institute from 2011-21. MATERIALS/METHODS Data pertaining to the management of patients with SP was abstracted by retrospective chart review. Progression free survival (PFS) and overall survival (OS) were defined as the time intervals from the date of diagnosis to the date of progression (local, systemic or both) and death or last follow up, respectively. PFS and OS were analyzed by Kaplan Meier method. RESULTS Atotal of 72 patients were diagnosed with SP (61-bone plasmacytoma; 11-extramedullary plasmacytoma) in between 2011 and 2021. The median age at diagnosis was 52 years. The male: female ratio was 2.27. The ECOG PS were 0, 1, 2, 3, and 4 in 1, 46, 11, 10, and 3 patients, respectively. The median diameter of the lesion was 6.7 cm (range 2.3-18.4 cm). The median M protein was 0.375 g/dl (range 0.63-5.3 g/dl). On bone marrow examination, 8 and 64 patients had no and minimal marrow involvement, respectively (median bone marrow plasma cells 4%). Radical radiotherapy (RT) was administered in 71 patients, the techniques being 2D-conventional in 35, 3D-conformal in 14, IMRT in 8 and VMAT in 5 patients (details not available in 9). The median RT dose was 45 Gy in 25 fractions over 5 weeks (range 45-50 Gy). In addition, 5(7%) patients underwent surgery prior to RT and 6(8.5%) patients received systemic chemotherapy. After RT, the median quantum of symptom relief was 75% (range 0-100%). The best response to RT was CR, PR, SD and PD in 41(57.7%),18(25.4%),3(4.2%) and 4(5.6%) patients, respectively (response assessment could not be done in 5). Local control with primary RT was achieved in 58(81.7%) patients. No RT related grade 3/4 acute or late toxicity was reported. The median follow up was 48.3 months (range 1.3-141.6 months). A total of 28(39.4%) patients experienced disease progression (systemic in 15, local in 7 and both in 6), out of which 13 could be successfully salvaged with further systemic chemotherapy (mostly bortezomib, lenalidomide/pomalidomide and dexamethasone based) with or without local treatment. On progression to multiple myeloma, 9 patients underwent high dose chemotherapy(melphalan) followed by autologous stem cell transplant. Nine (12.7%) patients died, the causes being COVID-19 infection in 1, surgical complications in 1, PD in 2, second malignancies in 3 and unknown in 2. The actuarial rates of PFS & OS were 58.4% & 92.5% at 3 years and 50.3% & 89.4% at 5 years, respectively. Metachronous second malignancies were noted in 4 patients (B-ALL-1, lung cancer-1, metastatic carcinoma cervix-1, metastatic carcinoma gall bladder-1). CONCLUSION In patients with SP, radical RT with a modest dose (45-50 Gy) leads to satisfactory symptom relief, response and local control. Close to 40% patients eventually progress to multiple myeloma, out of which 50% can be successfully salvaged with further systemic chemotherapy. The 5-year OS approaches 90% in this cohort.
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Affiliation(s)
- A Biswas
- All India Institute of Medical Sciences, New Delhi, India
| | - S Roy
- All India Institute of Medical Sciences, New Delhi, India
| | - V Ghosh
- All India Institute of Medical Sciences, New Delhi, India
| | - L Kumar
- All India Institute of Medical Sciences, New Delhi, India
| | - A Sharma
- All India Institute of Medical Sciences, New Delhi, India
| | - R Gupta
- All India Institute of Medical Sciences, New Delhi, India
| | - S Mallick
- All India Institute of Medical Sciences, New Delhi, India
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Pattanaik J, Bhasker S, Biswas A, R AV, Sharma A, Pramanik R, Kumar R, Sanyal S, Samala SK, Ghosh V, Sushant S, Pandey S, Tanwar MS, Praveen DVS, Mandal S. Patient-Reported Outcomes Evaluating the Impact of Hypo-Fractionated Palliative Quadshot Radiotherapy and Concurrent CDDP Treatment on Health-Related Quality of Life in Patients with Locally Advanced Squamous Cell Carcinoma of the Head and Neck. Int J Radiat Oncol Biol Phys 2023; 117:S122. [PMID: 37784316 DOI: 10.1016/j.ijrobp.2023.06.461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) In locally advanced squamous cell carcinoma of the head and neck (LAHNSCC), the main goal of treatment remains survival while improving quality of life (QOL). In recent decades, there has been a paradigm shift in the measurement of clinical outcomes in patients diagnosed with cancer, focusing on the patient perspective by incorporating patient-reported outcomes (PROs). The primary objective of this study was to evaluate the improvement in quality of life with the use of cyclic hypo-fractionated palliative QUAD SHOT radiotherapy (RT) with concurrent cisplatin (CDDP) in previously untreated patients with incurable LAHNSCC. MATERIALS/METHODS In this prospective interventional phase- II study, 60 patients with locally advanced squamous cell carcinoma of the head and neck, majority stage IVB, ECOG PS ≤ 3, were treated with QUAD SHOT RT (14 Gy/4 fractions/2 days - BD with 6-hour interval and concurrent CDDP at 6 mg/m2. This treatment was repeated at 4-week intervals for 2 additional cycles if tumor progression did not occur. Serial changes in HR -QoL were assessed using EORTC QLQ C-30 and H&N-35) at 4 different time points. Statistical methods such as the Wilcoxon signed-rank test and Friedman test were used to compare QoL values at different time points with Bonferroni correction for multiple comparisons to control for type I errors. RESULTS The median global health score (GHS) at baseline was 41.667, with an initial increase in score at 4 weeks (50.00) and at 8 weeks (54.167) that did not continue at 12 weeks (41.667). Symptoms related to toxicities (speech, social contact, sticky saliva, dry mouth, senses in H&N 35) were lower after 4 weeks. Application of the Friedman test for four time points revealed significant improvement in role function at 4 weeks, which remained constant at 8 weeks but was not sustained at 12 weeks. Comparison of HN-35 symptom scores between the four time points showed improvement in symptoms such as pain, swallowing, and mouth opening at 4 and 8 weeks. The mean QLQ C30 summary score for these patients improved at four weeks but did not remain constant at 8 and 12 weeks. CONCLUSION Our study showed significant improvement in quality-of-life parameters and reduction in symptom burden at 4 and 8 weeks due to disease control and symptom palliation by QUADSHOT CTRT, while quality-of-life scores worsened and symptom scores were not maintained at 12 weeks due to disease progression and occurrence of acute toxicities. This phase II study may serve as the basis for designing a phase III randomized control trial to compare quality of life changes with QUADSHOT CTRT and other palliative CTRT regimens.
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Affiliation(s)
- J Pattanaik
- All India Institute of Medical Sciences, New Delhi, India
| | - S Bhasker
- All India Institute of Medical Sciences, New Delhi, India
| | - A Biswas
- All India Institute of Medical Sciences, New Delhi, India
| | - A V R
- All India Institute of Medical Sciences, New Delhi, India
| | - A Sharma
- All India Institute of Medical Sciences, New Delhi, India
| | - R Pramanik
- DM Medical Oncology, AIIMS New Delhi, Delhi, India
| | - R Kumar
- All India Institute of Medical Sciences, Delhi Cancer Registry, New Delhi, India
| | - S Sanyal
- All India Institute of Medical Sciences, New Delhi, India
| | - S K Samala
- All India Institute of Medical Sciences, New Delhi, India
| | - V Ghosh
- All India Institute of Medical Sciences, New Delhi, India
| | - S Sushant
- All India Institute of Medical Sciences, New Delhi, India
| | - S Pandey
- All India Institute of Medical Sciences, New Delhi, India
| | - M S Tanwar
- All India Institute of Medical Sciences, New Delhi, India
| | - D V S Praveen
- All India Institute of Medical Sciences, New Delhi, India
| | - S Mandal
- All India Institute of Medical Sciences, New Delhi, India
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10
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Singh UB, Ray Y, Kanswal S, Sharma HP, Aayilliath AK, Wig N, Ahuja V, Biswas A, Velpandian T. Low rifampicin levels in plasma associated with a poor clinical response in patients with abdominal TB. Int J Tuberc Lung Dis 2023; 27:787-789. [PMID: 37749829 PMCID: PMC10519389 DOI: 10.5588/ijtld.23.0149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 06/15/2023] [Indexed: 09/27/2023] Open
Affiliation(s)
- U B Singh
- Department of Microbiology, All India Institute of Medical Sciences (AIIMS), New Delhi
| | - Y Ray
- Department of Microbiology, All India Institute of Medical Sciences (AIIMS), New Delhi, Department of Medicine, AIIMS, New Delhi
| | - S Kanswal
- Centralized Core Research Facility, AIIMS, New Delhi
| | - H P Sharma
- Centralized Core Research Facility, AIIMS, New Delhi
| | - A K Aayilliath
- Department of Microbiology, All India Institute of Medical Sciences (AIIMS), New Delhi, Department of Medicine, AIIMS, New Delhi
| | - N Wig
- Department of Medicine, AIIMS, New Delhi
| | - V Ahuja
- Department of Gastroenterology, AIIMS, New Delhi
| | - A Biswas
- Department of Medicine, AIIMS, New Delhi
| | - T Velpandian
- Department of Ocular Pharmacology & Pharmacy, AIIMS, New Delhi, India
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Bhasker S, Pattanaik J, Biswas A, R AV, Sharma A, Pramanik R, Sanyal S, Praveen DVS, Kumar R, Sushant S, Ghosh V, Mandal S, Samala SK, Tanwar MS, Pandey S. Hypo-Fractionated Palliative QUADSHOT Radiotherapy and Concurrent CDDP in Patients with LAHNSCC: Toxicities and Clinical Outcomes. Int J Radiat Oncol Biol Phys 2023; 117:e567. [PMID: 37785734 DOI: 10.1016/j.ijrobp.2023.06.1893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Shorter palliative hypo-fractionated radiotherapy regimens given concurrently with chemotherapy, preferably cisplatin (radiosensitizer), increase response rates with acceptable toxicity, leading to better compliance of patients with locally advanced squamous cell carcinoma of the head and neck (LAHNSCC) in whom late toxicities due to chemoradiotherapy are less relevant. This single institution prospective interventional phase II study was conducted with the goal of achieving high rates of locoregional control with acceptable treatment-related toxicity. MATERIALS/METHODS In this prospective interventional phase- II study, 60 patients with LAHNSCC (treatment naive), the majority in stage IVB and ECOG PS ≤ 3, were treated with QUAD SHOT RT using the conventional 2D technique (14Gy in 4 fractions on 2 consecutive days twice daily with a 6-hour interval between the two fractions) and concurrent cisplatin (CDDP) at a dose of 6 mg/m2. This treatment was repeated at 4-week intervals for 2 additional cycles if tumor progression did not occur. The Kaplan-Meier method was used to determine survival probability for progression-free survival (PFS) and overall survival (OS). Descriptive statistics with number and percentage were used for each toxicity and tumor response at different time points. A P value of less than 0.05 was considered significant. RESULTS In our study, all patients received at least one cycle of QUADSHOT chemoradiotherapy (CTRT), while 35 and 18 patients received the 2nd and 3rd QUADSHOT CTRT, respectively. Of the patients who completed the first cycle of QUADSHOT CTRT, 27 (45%) patients had a partial response (PR) and 22 (36.7%) had stable disease (SD). Of the patients who completed the second cycle QUADSHOT CTRT, 77.2% had SD, while 11.4% had PR and 11.4% had PD. After the 3rd QUADSHOT CTRT, 72.2% had SD, while 11.1% had PR and 16.7% had PD. The overall response rate (SD +PR) in our study was 81%, 88.6%, and 83% after the 1st, 2nd, and 3rd QUADSHOT CTRT, respectively. After the 3rd QUADSHOT CTRT, no patient showed grade 4 toxicity. Most patients had grade I/ II toxicities e.g., skin (grade I -83%), mucositis (grade II -50%), salivary gland toxicity (grade II -50%), grade I laryngitis (83.3%). Grade- III oral mucositis and pharyngitis were seen in 27% and 6.7% of patients, respectively. Median OS and PFS were 7.9 months and 6.2 months, respectively. CONCLUSION Concurrent chemotherapy acts as a radiosensitizer and provides a synergistic effect when coupled with hypo-fractionated radiation, resulting in more effective control of locoregional disease in locally advanced head and neck tumors with acceptable toxicities. This study is hypothesis-generating and may serve as a basis for developing optimal CTRT regimens for patients with LAHNSCC who are not suitable for curative treatment.
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Affiliation(s)
- S Bhasker
- All India Institute of Medical Sciences, New Delhi, India
| | - J Pattanaik
- All India Institute of Medical Sciences, New Delhi, India
| | - A Biswas
- All India Institute of Medical Sciences, New Delhi, India
| | - A V R
- All India Institute of Medical Sciences, New Delhi, India
| | - A Sharma
- All India Institute of Medical Sciences, New Delhi, India
| | - R Pramanik
- DM Medical Oncology, AIIMS New Delhi, Delhi, India
| | - S Sanyal
- All India Institute of Medical Sciences, New Delhi, India
| | - D V S Praveen
- All India Institute of Medical Sciences, New Delhi, India
| | - R Kumar
- All India Institute of Medical Sciences, Delhi Cancer Registry, New Delhi, India
| | - S Sushant
- All India Institute of Medical Sciences, New Delhi, India
| | - V Ghosh
- All India Institute of Medical Sciences, New Delhi, India
| | - S Mandal
- All India Institute of Medical Sciences, New Delhi, India
| | - S K Samala
- All India Institute of Medical Sciences, New Delhi, India
| | - M S Tanwar
- All India Institute of Medical Sciences, New Delhi, India
| | - S Pandey
- All India Institute of Medical Sciences, New Delhi, India
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Abstract
Zika virus (ZIKV) is an arthropod-borne flavivirus that presents with acute febrile illness associated with rash, arthralgia and conjunctivitis. After years of sporadic reports in Africa, the three major outbreaks of this disease occurred in Yap Islands (2007), French Polynesia (2013-14) and South Americas (2015-16). Although, serological surveys suggested the presence of ZIKV in India in 1950s, cross-reactivity could not be ruled out. The first four proven cases of ZIKV from India were reported in 2017. This was followed by major outbreaks in the states of Rajasthan and Madhya Pradesh in 2018. Fortunately, the outbreaks in India were not associated with neurological complications. These outbreaks in India highlighted the spread of this disease beyond geographical barriers owing to the growing globalization, increased travel and ubiquitous presence of its vector, the Aedes mosquito. In this review, we discuss the epidemiology, clinical features and management of ZIKV in India.
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Affiliation(s)
- N Gupta
- From the Department of Medicine, All India Institute of Medical Sciences, 3rd Floor, Teaching Block, New Delhi 110029
| | - P Kodan
- From the Department of Medicine, All India Institute of Medical Sciences, 3rd Floor, Teaching Block, New Delhi 110029
| | - K Baruah
- National Vector Borne Disease Control Programme, Ministry of Health and Family Welfare, Government of India, 22 Shyam Nath Marg, New Delhi 110054, India
| | - M Soneja
- From the Department of Medicine, All India Institute of Medical Sciences, 3rd Floor, Teaching Block, New Delhi 110029
| | - A Biswas
- From the Department of Medicine, All India Institute of Medical Sciences, 3rd Floor, Teaching Block, New Delhi 110029
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13
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Memon MZ, Ezzeldin M, Biswas A, Ahmad R, Nisar T, Singla A, Muhammad N, Shaltoni H, Kan P, Zaidat OO, Khandelwal P. Novel technique of stent placement via gateway balloon in intracranial atherosclerosis-associated large vessel occlusion. J Neuroimaging 2023; 33:773-780. [PMID: 37391866 DOI: 10.1111/jon.13139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 06/02/2023] [Accepted: 06/12/2023] [Indexed: 07/02/2023] Open
Abstract
BACKGROUND AND PURPOSE Neuroform Atlas stent can be deployed directly via gateway balloon for angioplasty and stent placement without the need for exchange maneuver required for Wingspan stent use. We present our initial experience of this strategy in intracranial atherosclerosis-associated large vessel occlusions. METHODS Patients were identified through mechanical thrombectomy (MT) database from January 2020 to June 2022 at our institutions. Due to reocclusion or impending occlusion, rescue angioplasty with stent placement was performed after initial standard MT. Primary outcomes were good angiographic recanalization with modified thrombolysis in cerebral infarction (mTICI) score of 2b-3, rate of intracranial hemorrhage (ICH), and favorable functional outcome at 3 months, that is, modified Rankin Scale (mRS) score of 0-3. RESULTS We identified 22 patients treated using this technique. Among those, 11 were females with their average age at 66 years (range: 52-85). Initial median National Institute of Health Stroke Scale score was 11 (range: 5-30) and all patients received loading doses of aspirin and P2Y₁₂ inhibitor. After performing submaximal angioplasty and Neuroform Atlas stent deployment through the gateway balloon, we achieved final mTICI of 2b-3 in 20 (90%) patients. One patient had ICH post-op that was asymptomatic. Eight (36%) patients had mRS of 0-3 at 90 days. CONCLUSION Our preliminary experience suggests possible safety and feasibility of deploying Neuroform Atlas stent through a compatible Gateway balloon microcatheter without the need for ICH-associated microcatheter exchange. Further studies with long-term clinical and angiographic follow-up are warranted to corroborate our initial findings.
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Affiliation(s)
- Muhammad Zeeshan Memon
- Department of Neurosurgery Rutgers, The State University of New Jersey, Newark, New Jersey, USA
- Department of Neurology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Mohamad Ezzeldin
- Department of Clinical Sciences, College of Medicine, University of Houston, Houston, Texas, USA
| | - Arundhati Biswas
- Department of Neurosurgery Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Rowaid Ahmad
- Department of Neurology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Taha Nisar
- Department of Neurology, University of South Alabama
| | - Amit Singla
- Department of Neurosurgery Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Nazar Muhammad
- Department of Neurology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Hashem Shaltoni
- Department of Neurology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Peter Kan
- Department of Neurology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Osama O Zaidat
- Departments of Endovascular Neurosurgery and Stroke, St. Vincent Mercy Medical Center, Toledo, Ohio, USA
| | - Priyank Khandelwal
- Department of Neurosurgery Rutgers, The State University of New Jersey, Newark, New Jersey, USA
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14
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Siegler JE, Shaikh H, Khalife J, Oak S, Zhang L, Abdalkader M, Klein P, Nguyen TN, Kass‐Hout T, Morsi RZ, Heit JJ, Regenhardt RW, Diestro JDB, Cancelliere NM, Ghozy S, Sweid A, Naamani KE, Amllay A, Meyer L, Dusart A, Bellante F, Forestier G, Rouchaud A, Saleme S, Mounayer C, Fiehler J, Kühn AL, Puri AS, Dyzmann C, Kan PT, Colasurdo M, Marnat G, Berge J, Barreau X, Sibon I, Nedelcu S, Henninger N, Marotta TR, Das AS, Stapleton CJ, Rabinov JD, Ota T, Dofuku S, Yeo LL, Tan BY, Martinez‐Gutierrez JC, Salazar‐Marioni S, Sheth SA, Renieri L, Capirossi C, Mowla A, Tjoumakaris SI, Jabbour P, Khandelwal P, Biswas A, Clarençon F, Elhorany M, Premat K, Valente I, Pedicelli A, Filipe JP, Varela R, Quintero‐Consuegra M, Gonzalez NR, Möhlenbruch MA, Jesser J, Costalat V, Schiphorst AT, Yedavalli V, Harker P, Chervak LM, Aziz Y, Bullrich MB, Sposato L, Gory B, Hecker C, Killer‐Oberpfalzer M, Griessenauer CJ, Thomas AJ, Hsieh C, Liebeskind DS, Radu RA, Alexandre AM, Tancredi I, Faizy TD, Fahed R, Weyland C, Patel AB, Pereira VM, Lubicz B, Guenego A, Dmytriw AA. Aspiration Versus Stent‐Retriever as First‐Line Endovascular Therapy Technique for Primary Medium and Distal Intracranial Occlusions: A Propensity‐Score Matched Multicenter Analysis. SVIN 2023. [DOI: 10.1161/svin.123.000931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 05/05/2023] [Indexed: 09/02/2023]
Abstract
BACKGROUND
For acute proximal intracranial artery occlusions, contact aspiration may be more effective than stent‐retriever for first‐line reperfusion therapy. Due to the lack of data regarding medium vessel occlusion thrombectomy, we evaluated outcomes according to first‐line technique in a large, multicenter registry.
METHODS
Imaging, procedural, and clinical outcomes of patients with acute proximal medium vessel occlusions (M2, A1, or P1) or distal medium vessel occlusions (M3, A2, P2, or further) treated at 37 sites in 10 countries were analyzed according to first‐line endovascular technique (stent‐retriever versus aspiration). Multivariable logistic regression and propensity‐score matching were used to estimate the odds of the primary outcome, expanded Thrombolysis in Cerebral Infarction score of 2b–3 (“successful recanalization”), as well as secondary outcomes (first‐pass effect, expanded Thrombolysis in Cerebral Infarction 2c‐3, intracerebral hemorrhage, and 90‐day modified Rankin scale, 90‐day mortality) between treatment groups.
RESULTS
Of the 440 included patients (44.5% stent‐retriever versus 55.5% aspiration), those treated with stent‐retriever had lower baseline Alberta Stroke Program Early Computed Tomography Scale scores (median 8 versus 9;
P
<0.01), higher National Institutes of Health Stroke Scale scores (median 13 versus 11;
P
=0.02), and nonsignificantly fewer medium‐distal occlusions (M3, A2, P2, or other: 17.4% versus 23.8%;
P
=0.10). Use of a stent‐retriever was associated with 15% lower odds of successful recanalization (odds ratio [OR], 0.85; [95% CI 0.74–0.98];
P
=0.02), but this was not significant after multivariable adjustment in the total cohort (adjusted OR, 0.88; [95% CI 0.72–1.09];
P
=0.24), or in the propensity‐score matched cohort (n=105 in each group) (adjusted OR, 0.94; [95% CI 0.75–1.18];
P
=0.60). There was no significant association between technique and secondary outcomes in the propensity‐score matched adjusted models.
CONCLUSION
In this large, diverse, multinational medium vessel occlusion cohort, we found no significant difference in imaging or clinical outcomes with aspiration versus stent‐retriever thrombectomy.
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15
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Feldstein E, Zhong A, Clare K, Nolan B, Patel S, Lavi-Romer N, Stadlan Z, Dicpinigaitis A, Dominguez J, Kamal H, Shapiro SD, Biswas A, Tanweer O, Bulsara K, Muh C, Pisapia J, Hanft S, Mayer S, Gandhi CD, Al-Mufti F. Ruptured arteriovenous malformation mortality: Incidence, risk factors, and inpatient outcome score. Interv Neuroradiol 2023:15910199231173458. [PMID: 37157828 DOI: 10.1177/15910199231173458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023] Open
Abstract
BACKGROUND Limited literature exists on the morbidity and mortality of AVM associated intracerebral hemorrhage (ICH) compared with non-AVM ICH. OBJECTIVE We examine morbidity and mortality in cAVM in a large nationwide inpatient sample to create a prognostic inpatient ruptured AVM mortality score. METHODS This retrospective cohort study from 2008 to 2014 compares outcomes in cAVM related hemorrhages and ICH utilizing the National Inpatient Sample database. Diagnostic codes for ICH and AVM underlying ICH were identified. We compared case fatality according to medical complications. Multivariate analysis was used to derive hazard ratios and 95% confidence intervals to assess odds of mortality. RESULTS We identified 6496 patients with ruptured AVMs comparing them to 627,185 admitted with ICH. Mortality was lower for ruptured AVMs (11%) compared to ICH (22%) [p < 0.01]. Mortality associated factors were liver disease (OR 2.64, CI 1.81-3.85, p < .001), diabetes mellitus (OR 2.42, CI 1.38-4.22, p = 0.002), alcohol abuse (OR 1.81, CI 1.31-2.49, p = 0.001), hydrocephalus (OR 3.35 CI 2.81-4.00, p < 0.001), cerebral edema (OR 1.5, 1.25-1.85, p < 0.001), cardiac arrest (OR 15, CI 7.9-30, p < 0.001), and pneumonia (OR 1.93, CI 1.51-2.47, p < 0.001). A 0-5 ruptured AVM mortality score was developed: Cardiac arrest (=3), age >60 (=1), Black race (=1), chronic liver failure (=1) diabetes mellitus (=1), pneumonia (=1), alcohol abuse (=1) and cerebral edema (=1). Mortality increased with score. No patient with 5 or more points survived. CONCLUSION The Ruptured AVM Mortality Score allows for risk stratification on patients with ICH due to ruptured AVM. This scale could prove useful in prognostication and patient education.
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Affiliation(s)
- Eric Feldstein
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Allison Zhong
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Kevin Clare
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Bridget Nolan
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Smit Patel
- Division of Neurosurgery, University of Connecticut, Farmington, CT, USA
| | - Nir Lavi-Romer
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Zehavya Stadlan
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | | | - Jose Dominguez
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Haris Kamal
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Steven D Shapiro
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Arundhati Biswas
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | | | - Ketan Bulsara
- Division of Neurosurgery, University of Connecticut, Farmington, CT, USA
| | - Carrie Muh
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Jared Pisapia
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Simon Hanft
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Stephan Mayer
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Chirag D Gandhi
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
| | - Fawaz Al-Mufti
- Westchester Medical Center/New York Medical College, Valhalla, NY, USA
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16
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Biswas A, McNamara C, Gowda VK, Gala F, Sudhakar S, Sidpra J, Vari MS, Striano P, Blaser S, Severino M, Batzios S, Mankad K. Neuroimaging Features of Biotinidase Deficiency. AJNR Am J Neuroradiol 2023; 44:328-333. [PMID: 36759144 PMCID: PMC10187823 DOI: 10.3174/ajnr.a7781] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 01/04/2023] [Indexed: 02/11/2023]
Abstract
Biotinidase deficiency is an autosomal recessive condition caused by pathogenic variants in the BTD gene. Resultant deficiency of free biotin leads to impaired activity of the enzyme carboxylase and related neurologic, dermatologic, and ocular symptoms. Many of these are reversible on treatment, but early recognition and commencement of biotin supplementation are critical. This practice is especially important in countries where routine neonatal screening for biotinidase deficiency is not performed. In this report comprising 14 patients from multiple centers, we demonstrate the MR imaging patterns of this disorder at various age groups. Knowledge of these patterns in the appropriate clinical context will help guide early diagnosis of this treatable metabolic disorder.
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Affiliation(s)
- A Biswas
- From the Department of Diagnostic Imaging (A.B., S. Blaser), The Hospital for Sick Children, Toronto, Ontario, Canada
- Departments of Neuroradiology (A.B., C.M., S.S., J.S., K.M.)
| | - C McNamara
- Departments of Neuroradiology (A.B., C.M., S.S., J.S., K.M.)
| | - V K Gowda
- Department of Pediatric Neurology (V.K.G.), Indira Gandhi Institute of Child Health, Bengaluru, Karnataka, India
| | - F Gala
- Department of Radiodiagnosis (F.G.), Bai Jerbai Wadia Hospital, Mumbai, Maharashtra, India
| | - S Sudhakar
- Departments of Neuroradiology (A.B., C.M., S.S., J.S., K.M.)
| | - J Sidpra
- Departments of Neuroradiology (A.B., C.M., S.S., J.S., K.M.)
- Developmental Biology and Cancer Section (J.S.), University College London Great Ormond Street Institute of Child Health, London, UK
| | - M S Vari
- Pediatric Neurology and Muscular Diseases Unit (M.S.V., P.S.)
| | - P Striano
- Pediatric Neurology and Muscular Diseases Unit (M.S.V., P.S.)
| | - S Blaser
- From the Department of Diagnostic Imaging (A.B., S. Blaser), The Hospital for Sick Children, Toronto, Ontario, Canada
| | - M Severino
- Neuroradiology Unit (M.S.), Istituto di Ricovero e Cura a Carattere Scientifico Istituto Giannina Gaslini, Genoa, Italy
| | - S Batzios
- Paediatric Metabolic Medicine (S. Batzios), Great Ormond Street Hospital for Children, National Health Service Foundation Trust, London, UK
| | - K Mankad
- Departments of Neuroradiology (A.B., C.M., S.S., J.S., K.M.)
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17
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White K, Connor K, Meylan M, Bougoüin A, Salvucci M, Bielle F, O'Farrell AC, Sweeney K, Weng L, Bergers G, Dicker P, Ashley DM, Lipp ES, Low JT, Zhao J, Wen P, Prins R, Verreault M, Idbaih A, Biswas A, Prehn JHM, Lambrechts D, Arijs I, Lodi F, Dilcan G, Lamfers M, Leenstra S, Fabro F, Ntafoulis I, Kros JM, Cryan J, Brett F, Quissac E, Beausang A, MacNally S, O'Halloran P, Clerkin J, Bacon O, Kremer A, Chi Yen RT, Varn FS, Verhaak RGW, Sautès-Fridman C, Fridman WH, Byrne AT. Identification, validation and biological characterisation of novel glioblastoma tumour microenvironment subtypes: implications for precision immunotherapy. Ann Oncol 2023; 34:300-314. [PMID: 36494005 DOI: 10.1016/j.annonc.2022.11.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND New precision medicine therapies are urgently required for glioblastoma (GBM). However, to date, efforts to subtype patients based on molecular profiles have failed to direct treatment strategies. We hypothesised that interrogation of the GBM tumour microenvironment (TME) and identification of novel TME-specific subtypes could inform new precision immunotherapy treatment strategies. MATERIALS AND METHODS A refined and validated microenvironment cell population (MCP) counter method was applied to >800 GBM patient tumours (GBM-MCP-counter). Specifically, partition around medoids (PAM) clustering of GBM-MCP-counter scores in the GLIOTRAIN discovery cohort identified three novel patient clusters, uniquely characterised by TME composition, functional orientation markers and immune checkpoint proteins. Validation was carried out in three independent GBM-RNA-seq datasets. Neoantigen, mutational and gene ontology analysis identified mutations and uniquely altered pathways across subtypes. The longitudinal Glioma Longitudinal AnalySiS (GLASS) cohort and three immunotherapy clinical trial cohorts [treatment with neoadjuvant/adjuvant anti-programmed cell death protein 1 (PD-1) or PSVRIPO] were further interrogated to assess subtype alterations between primary and recurrent tumours and to assess the utility of TME classifiers as immunotherapy biomarkers. RESULTS TMEHigh tumours (30%) displayed elevated lymphocyte, myeloid cell immune checkpoint, programmed cell death protein 1 (PD-1) and cytotoxic T-lymphocyte-associated protein 4 transcripts. TMEHigh/mesenchymal+ patients featured tertiary lymphoid structures. TMEMed (46%) tumours were enriched for endothelial cell gene expression profiles and displayed heterogeneous immune populations. TMELow (24%) tumours were manifest as an 'immune-desert' group. TME subtype transitions upon recurrence were identified in the longitudinal GLASS cohort. Assessment of GBM immunotherapy trial datasets revealed that TMEHigh patients receiving neoadjuvant anti-PD-1 had significantly increased overall survival (P = 0.04). Moreover, TMEHigh patients treated with adjuvant anti-PD-1 or oncolytic virus (PVSRIPO) showed a trend towards improved survival. CONCLUSIONS We have established a novel TME-based classification system for application in intracranial malignancies. TME subtypes represent canonical 'termini a quo' (starting points) to support an improved precision immunotherapy treatment approach.
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Affiliation(s)
- K White
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - K Connor
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - M Meylan
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université de Paris, Paris, France
| | - A Bougoüin
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université de Paris, Paris, France
| | - M Salvucci
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - F Bielle
- Paris Brain Institute (ICM), CNRS UMR 7225, Inserm U 1127, UPMC-P6 UMR S 1127, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - A C O'Farrell
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - K Sweeney
- National Centre of Neurosurgery, Beaumont Hospital, Dublin, Ireland
| | - L Weng
- VIB-KU Leuven Center for Cancer Biology, Department of Oncology, Leuven, Belgium
| | - G Bergers
- VIB-KU Leuven Center for Cancer Biology, Department of Oncology, Leuven, Belgium
| | - P Dicker
- Epidemiology & Public Health, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - D M Ashley
- Duke Cancer Institute, Duke University, Durham, USA
| | - E S Lipp
- Duke Cancer Institute, Duke University, Durham, USA
| | - J T Low
- Duke Cancer Institute, Duke University, Durham, USA
| | - J Zhao
- Department of Systems Biology at Columbia University, New York, USA
| | - P Wen
- Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston, USA
| | - R Prins
- Department of Medical and Molecular Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, USA
| | - M Verreault
- Paris Brain Institute (ICM), CNRS UMR 7225, Inserm U 1127, UPMC-P6 UMR S 1127, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - A Idbaih
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Paris Brain Institute (ICM), AP-HP, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix, Paris, France
| | - A Biswas
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - J H M Prehn
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - D Lambrechts
- Laboratory for Translational Genetics, Department of Human Genetics, Leuven, Belgium; VIB Center for Cancer Biology, Leuven, Belgium
| | - I Arijs
- Laboratory for Translational Genetics, Department of Human Genetics, Leuven, Belgium; VIB Center for Cancer Biology, Leuven, Belgium
| | - F Lodi
- Laboratory for Translational Genetics, Department of Human Genetics, Leuven, Belgium; VIB Center for Cancer Biology, Leuven, Belgium
| | - G Dilcan
- Laboratory for Translational Genetics, Department of Human Genetics, Leuven, Belgium; VIB Center for Cancer Biology, Leuven, Belgium
| | - M Lamfers
- Department of Neurosurgery, Brain Tumor Center, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - S Leenstra
- Department of Neurosurgery, Brain Tumor Center, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - F Fabro
- Department of Neurosurgery, Brain Tumor Center, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - I Ntafoulis
- Department of Neurosurgery, Brain Tumor Center, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - J M Kros
- Department of Pathology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - J Cryan
- Department of Neuropathology, Beaumont Hospital, Dublin, Ireland
| | - F Brett
- Department of Neuropathology, Beaumont Hospital, Dublin, Ireland
| | - E Quissac
- Paris Brain Institute (ICM), CNRS UMR 7225, Inserm U 1127, UPMC-P6 UMR S 1127, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - A Beausang
- Department of Neuropathology, Beaumont Hospital, Dublin, Ireland
| | - S MacNally
- National Centre of Neurosurgery, Beaumont Hospital, Dublin, Ireland
| | - P O'Halloran
- National Centre of Neurosurgery, Beaumont Hospital, Dublin, Ireland
| | - J Clerkin
- National Centre of Neurosurgery, Beaumont Hospital, Dublin, Ireland
| | - O Bacon
- Department of Neuropathology, Beaumont Hospital, Dublin, Ireland
| | - A Kremer
- Information Technology for Translational Medicine (ITTM), Luxembourg, Luxembourg
| | - R T Chi Yen
- Information Technology for Translational Medicine (ITTM), Luxembourg, Luxembourg
| | - F S Varn
- The Jackson Laboratory for Genomic Medicine, Farmington, USA
| | - R G W Verhaak
- The Jackson Laboratory for Genomic Medicine, Farmington, USA; Department of Neurosurgery, Cancer Center Amsterdam, Amsterdam University Medical Centers, VU University Medical Center, Amsterdam, the Netherlands
| | - C Sautès-Fridman
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université de Paris, Paris, France
| | - W H Fridman
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université de Paris, Paris, France
| | - A T Byrne
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland.
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18
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Della Rosa M, Duranovich F, Pacheco D, Sandoval E, Khan A, Biswas A, Jonker A. Forage type affects the temporal methane emission profiles in dairy cows fed fresh forages. Anim Feed Sci Technol 2023. [DOI: 10.1016/j.anifeedsci.2023.115604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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19
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Phillips S, Biswas A, Watson T. An assessment of learners’ child passenger safety knowledge. Am J Med Sci 2023. [DOI: 10.1016/s0002-9629(23)00198-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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20
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Sarkar P, Biswas A, Kumar R, Rai S, Jha SN, Bhattacharyya D. Role of C and B 4C barrier layers in controlling diffusion propagation across the interface of Cr/Sc multilayers. Phys Chem Chem Phys 2023; 25:3072-3082. [PMID: 36620902 DOI: 10.1039/d2cp03785h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The optical performance of low-bilayer-thickness metallic multilayers (ML) can be improved significantly by limiting the intermixing of consecutive layers at the interfaces. Barrier layers are supposed to exhibit a decisive role in controlling diffusion across the interfaces. The element-specific grazing incidence extended X-ray absorption fine structure technique using synchrotron radiation has been used in conjunction with grazing incidence X-ray reflectivity and diffuse X-ray scattering measurements to study the impact of the two most common barrier layers, viz., C and B4C, at the interfaces of Cr/Sc MLs. The diffusion propagation is reduced by both the barrier layers; however, it is found that the improvement is more significant with the B4C barrier layer. It is seen that C forms an intermixed layer with Sc and leads to carbide formation at the interface, which then acts as shielding and prevents further interdiffusion, while B4C hardly penetrates into Sc and stops the overlap between Sc and Cr directly by wetting the corresponding interface. Thus, the above measurements reveal crucial and precise information regarding the elemental diffusion kinetics at the interfaces of Cr/Sc MLs in a non-destructive way, which is very important for technological applications of these MLs as X-ray optical devices.
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Affiliation(s)
- P Sarkar
- Atomic & Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
| | - A Biswas
- Atomic & Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
| | - Ravi Kumar
- Atomic & Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
| | - S Rai
- Synchrotron Utilisation Section, Raja Ramnna Centre for Advanced Technology, Indore 752013, India
| | - S N Jha
- Beamline Development & Applications Section Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - D Bhattacharyya
- Atomic & Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
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Biswas A, Vega-Guzman J, Bansal A, Kara AH, Aphane M, Yildirim Y, Alshehri HM. Solitary waves, shock waves and conservation laws with the surface tension effect in the Boussinesq equation. PEAS 2023. [DOI: 10.3176/proc.2023.1.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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D'Arco F, Biswas A, Clement E, Rajput K, Juliano AF. Subtle Malformation of the Cochlear Apex and Genetic Abnormalities: Beyond the "Thorny" Cochlea. AJNR Am J Neuroradiol 2023; 44:79-81. [PMID: 36549853 PMCID: PMC9835904 DOI: 10.3174/ajnr.a7746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 11/15/2022] [Indexed: 12/24/2022]
Abstract
With the routine use of high-resolution heavily T2-weighted sequences to evaluate patients with hearing deficits, new, subtle phenotypes of cochlear malformations are being discovered and an increasing number of genotype-phenotype correlations are being found through a reverse phenotype approach, which can help guide geneticists. In this brief report, we present subtle malformations of the apical turn of the cochlea related to 3 genetic mutations, emphasizing the importance of a careful assessment of the cochlear apex.
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Affiliation(s)
- F D'Arco
- From the Department of Radiology (F.D., A.B.)
| | - A Biswas
- From the Department of Radiology (F.D., A.B.)
| | | | - K Rajput
- Audiological Medicine (K.R.), Great Ormond Street Hospital for Children, National Health Service Foundation Trust, London, UK
| | - A F Juliano
- Department of Radiology (A.F.J.), Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts
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Kanodia R, Kumar R, Biswas A, Bhasker S. 251P Is QUAD SHOT palliative cyclical hypo-fractionated radiotherapy in advanced head and neck cancer the way to go? An alternative regimen in low resource countries. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
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Amin SM, Talat AM, Mahmoud MS, Osman AA, Hussein A, Hegazy A, Biswas A, Mostafa HN. Endoscopic Transnasal Transmaxillary Approach to Orbital Apex through the Meningo-Orbital Band: A Cadaveric Feasibility Study. Neurol India 2022; 70:1427-1434. [PMID: 36076639 DOI: 10.4103/0028-3886.355088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Extradural transcranial release of the meningo-orbital band occupying the lateral part of the superior orbital fissure is used to approach the orbital apex and middle cranial fossa. The authors tested the feasibility of the release of the meningo-orbital band via an endonasal transmaxillary approach. Materials and Methods Five injected cadaveric heads were assessed for dimensions of superior orbital fissure by computerized tomography. An endonasal transsphenoid transpterygoid approach was done to the superior orbital fissure and annulus of Zinn medially, down to the maxillary nerve. The periorbita was dissected superolaterally to expose the greater wing of the sphenoid and the meningo-orbital band. The superior orbital fissure was decompressed inferiorly by drilling the greater wing of the sphenoid and the maxillary strut after transposition of the maxillary nerve. The meningoorbital band was cut at the junction of the lateral part of the superior orbital fissure and the periorbita exposing the frontotemporal dural junction. The edge of the lesser wing of the sphenoid was drilled toward the annulus of Zinn and the optic canal. The temporal lobe dura was separated from the periorbita and lateral cavernous dural wall at the meningo-orbital band and the ophthalmic nerve. Results The superior orbital fissure had an oblique angle (mean: 39 ± 2.75 degrees) to the midsagittal plane, the length of its lateral part corresponding to the meningo-orbital band was (mean: 6.08 ± 2.58 mm) and the distance from its lateral end to midline was (mean 2.97 ± 0.11 cm). The meningo-orbital band was released in 10 cadaveric head sides with a distinct plane between the periorbita and the dura propria. Transmaxillary endoscopy provided less orbital retraction and better visualization of the lateral wall of the cavernous sinus. Conclusion Endonasal transmaxillary release of the meningoorbital band is feasible, allowing exposure of the orbital apex and the middle cranial fossa.
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Affiliation(s)
- Sameh M Amin
- Otorhinolaryngology and Skull Base Surgery, Fayoum University, Fayoum, Egypt
| | | | - Mohammad S Mahmoud
- Otorhinolaryngology, Ain Shams University Faculty of medicine, El Demerdash Hospital, Cairo, Egypt
| | | | - Ayman Hussein
- Otorhinolaryngology, Faculty of Medicine, Cairo University, Egypt Kasr El Aini Hospital, Egypt
| | - Ahmed Hegazy
- Neurosurgery Faculty of Medicine, Kasr Al-Aini - Cairo University, Abd El-Aziz Basha Fahmy, Giza, Egypt
| | - Arundhati Biswas
- Neurosurgery, Carle Foundation Hospital, Urbana, Illinois, United States
| | - Hamdi Nabawi Mostafa
- Department of Neurosurgery, Faculty of Medicine, Misr University for Science and Technology, Al- Motamayez District, Egypt
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Biswas A, Amirabadi A, Wagner M, Ertl-Wagner B. Features of Visually AcceSAble Rembrandt Images: Interrater Reliability in Pediatric Brain Tumors. AJNR Am J Neuroradiol 2022; 43:304-308. [PMID: 35058297 PMCID: PMC8985665 DOI: 10.3174/ajnr.a7399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/20/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND PURPOSE At present, no evidence-based lexicon exists for pediatric intracranial tumors. The Visually AcceSAble Rembrandt Images terminology describes reproducible MR imaging features of adult gliomas for prediction of tumor grade, molecular markers, and survival. Our aim was to assess the interrater reliability of the pre-resection features of Visually AcceSAble Rembrandt Images in pediatric brain tumors. MATERIALS AND METHODS Fifty consecutive pre-resection brain MR imaging examinations of pediatric intracranial neoplasms were independently reviewed by 3 neuroradiologists. The intraclass correlation coefficient for continuous variables and the Krippendorf alpha were used to evaluate the interrater agreement. Subgroup analysis was performed for 30 gliomas. RESULTS Parameters with almost perfect agreement (α > .8) included tumor location (F1) and proportion of enhancing tumor (F5). Parameters with substantial agreement (α = .61-.80) were side of tumor epicenter (F2), involvement of eloquent brain (F3), enhancement quality (F4), proportion of non-contrast-enhancing tumor (F6), and deep white matter invasion (F21). The other parameters showed either moderate (α = .41-.60; n = 11), fair (α = .21-.40; n = 5), or slight agreement (α = 0-.20; n = 1). Subgroup analysis of 30 gliomas showed almost perfect agreement for tumor location (F1), involvement of eloquent brain (F3), and proportion of enhancing tumor (F5); and substantial agreement for side of tumor epicenter (F2), enhancement quality (F4), proportion of noncontrast enhancing tumor (F6), cysts (F8), thickness of enhancing margin (F11), and deep white matter invasion (F21). The intraclass correlation coefficient for measurements in the axial plane was excellent in both the main group (0.984 [F29] and 0.982 [F30]) and the glioma subgroup (0.973 [F29] and 0.973 [F30]). CONCLUSIONS Nine features of Visually AcceSAble Rembrandt Images have an acceptable interrater agreement in pediatric brain tumors. For the subgroup of pediatric gliomas, 11 features of Visually AcceSAble Rembrandt Images have an acceptable interrater agreement. The low degree of reproducibility of the remainder of the features necessitates the use of features tailored to the pediatric age group and is likely related to the more heterogeneous imaging morphology of pediatric brain tumors.
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Affiliation(s)
- A. Biswas
- From the Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Ontario, Canada,Department of Medical Imaging, University of Toronto, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - A. Amirabadi
- From the Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Ontario, Canada,Department of Medical Imaging, University of Toronto, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - M.W. Wagner
- From the Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Ontario, Canada,Department of Medical Imaging, University of Toronto, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - B.B. Ertl-Wagner
- From the Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Ontario, Canada,Department of Medical Imaging, University of Toronto, The Hospital for Sick Children, Toronto, Ontario, Canada
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Alshehri HM, Biswas A, González-Gaxiola O, Yildirim Y. Bright optical solitons with polynomial law of nonlinear refractive index by Adomian decomposition scheme. PEAS 2022. [DOI: 10.3176/proc.2022.3.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Dicpinigaitis AJ, Gandhi CD, Shah SP, Galea VP, Cooper JB, Feldstein E, Shapiro SD, Kamal H, Kurian C, Kaur G, Tyagi R, Biswas A, Rosenberg J, Bauerschmidt A, Bowers CA, Mayer SA, Al-Mufti F. Endovascular thrombectomy with and without preceding intravenous thrombolysis for treatment of large vessel anterior circulation stroke: A cross-sectional analysis of 50,000 patients. J Neurol Sci 2022; 434:120168. [DOI: 10.1016/j.jns.2022.120168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 12/28/2021] [Accepted: 01/19/2022] [Indexed: 10/19/2022]
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Biswas A, James L, Shafath A, Nagaraj T. Unicystic ameloblastoma of mural variant crossing the midline. Natl J Maxillofac Surg 2022; 13:S199-S202. [PMID: 36393966 PMCID: PMC9651220 DOI: 10.4103/njms.njms_21_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 06/30/2019] [Accepted: 09/15/2019] [Indexed: 11/30/2022] Open
Abstract
Unicystic ameloblastoma (UCA) refers to cystic lesions that show gross features of a jaw cyst but on histologic examination show a typical ameloblastomatous epithelium lining part of the cyst cavity, with or without luminal and/or mural tumor growth. Even though the lesion is not as aggressive as the solid ameloblastoma, an accurate histopathologic diagnosis is essential for the treatment and prognosis. This case report illustrates a case of UCA of mural variant in the anterior region of the mandible crossing the midline, which is usually an unusual site of occurrence.
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Alngar ME, Alzahrani AK, Belic MR, Biswas A, Ekici M, Khan S, Zayed EM. Optical solitons in fiber Bragg gratings with quadratic-cubic law of nonlinear refractive index and cubic-quartic dispersive reflectivity. PEAS 2022. [DOI: 10.3176/proc.2022.2.05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Subramanian S, Biswas A, Alves C, Sudhakar S, Shekdar K, Krishnan P, Shroff M, Taranath A, Arrigoni F, Aldinger K, Leventer R, Dobyns W, Mankad K. ACTA2-Related Dysgyria: An Under-Recognized Malformation of Cortical Development. AJNR Am J Neuroradiol 2022; 43:146-150. [PMID: 34857515 PMCID: PMC8757559 DOI: 10.3174/ajnr.a7364] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 09/27/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND AND PURPOSE Pathogenic variants in the ACTA2 gene cause a distinctive arterial phenotype that has recently been described to be associated with brain malformation. Our objective was to further characterize gyral abnormalities in patients with ACTA2 pathogenic variants as per the 2020 consensus recommendations for the definition and classification of malformations of cortical development. MATERIALS AND METHODS We performed a retrospective, multicentric review of patients with proved ACTA2 pathogenic variants, searching for the presence of malformations of cortical development. A consensus read was performed for all patients, and the type and location of cortical malformation were noted in each. The presence of the typical ACTA2 arterial phenotype as well as demographic and relevant clinical data was obtained. RESULTS We included 13 patients with ACTA2 pathogenic variants (Arg179His mutation, n = 11, and Arg179Cys mutation, n = 2). Ninety-two percent (12/13) of patients had peri-Sylvian dysgyria, 77% (10/13) had frontal dysgyria, and 15% (2/13) had generalized dysgyria. The peri-Sylvian location was involved in all patients with dysgyria (12/12). All patients with dysgyria had a characteristic arterial phenotype described in ACTA2 pathogenic variants. One patient did not have dysgyria or the characteristic arterial phenotype. CONCLUSIONS Dysgyria is common in patients with ACTA2 pathogenic variants, with a peri-Sylvian and frontal predominance, and was seen in all our patients who also had the typical ACTA2 arterial phenotype.
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Affiliation(s)
- S. Subramanian
- From the Division of Pediatric Radiology (S.S.), Department of Radiology, UPMC Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - A. Biswas
- Department of Diagnostic Imaging (A.B., P.K., M.S.), The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | | | - S.V. Sudhakar
- Department of Radiology (S.V.S., K.M.), Great Ormond Street Hospital, NHS Foundation Trust, London, UK
| | - K.V. Shekdar
- Department of Radiology, and Department of Radiology (K.V.S.), Perelman School of Medicine at the University of Pennsylvania, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - P. Krishnan
- Department of Diagnostic Imaging (A.B., P.K., M.S.), The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - M. Shroff
- Department of Diagnostic Imaging (A.B., P.K., M.S.), The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - A. Taranath
- Department of Medical Imaging (A.T.), Women’s and Children’s Hospital, Adelaide, South Australia, Australia
| | - F. Arrigoni
- Neuroimaging Lab (F.A.), Scientific Institute, Istituto di Ricovero e Cura a Carattere Scientifico Eugenio Medea, Bosisio Parini, Italy
| | - K.A. Aldinger
- Department of Pediatrics (K.A.A.), University of Washington School of Medicine, Seattle, Washington,Center for Integrative Brain Research (K.A.A., W.B.D.), Seattle Children’s Research Institute, Seattle, Washington
| | - R.J. Leventer
- Department of Neurology (R.J.L.), Royal Children’s Hospital and Murdoch Children’s Research Institute, Parkville, Victoria, Australia,Department of Pediatrics (R.J.L.), University of Melbourne, Melbourne, Victoria, Australia
| | - W.B. Dobyns
- Center for Integrative Brain Research (K.A.A., W.B.D.), Seattle Children’s Research Institute, Seattle, Washington,Division of Genetics and Metabolism (W.B.D.), Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - K. Mankad
- Department of Radiology (S.V.S., K.M.), Great Ormond Street Hospital, NHS Foundation Trust, London, UK
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Griessenauer CJ, Enriquez-Marulanda A, Taussky P, Biswas A, Grandhi R, Xiang S, Hong T, Rinaldo L, Lanzino G, Brinjikji W, Burkhardt JK, Kan P, Ghuman M, Yang VXD, Chen K, Aziz-Sultan MA, Ghorbani M, Schirmer CM, Goren O, Dalal SS, Killer-Oberpfalzer M, Müller-Thies-Broussalis E, Koch MJ, Stapleton CJ, Patel AB, Foreman PM, Cress MC, Hirschl RA, Krings T, Zhang H, Dmytriw AA. Experience With the Pipeline Embolization Device for Posterior Circulations Aneurysms: A Multicenter Cohort Study. Neurosurgery 2021. [DOI: 10.1093/neuros/nyaa277_s052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Kinney MV, Day LT, Palestra F, Biswas A, Jackson D, Roos N, de Jonge A, Doherty P, Manu AA, Moran AC, George AS. Overcoming blame culture: key strategies to catalyse maternal and perinatal death surveillance and response. BJOG 2021; 129:839-844. [PMID: 34709701 PMCID: PMC9298870 DOI: 10.1111/1471-0528.16989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2021] [Indexed: 11/29/2022]
Affiliation(s)
- M V Kinney
- School of Public Health, University of the Western Cape, Bellville, South Africa
| | - L T Day
- Maternal Newborn Health Group, Maternal Adolescent, Reproductive and Child Health (MARCH) Centre, London School of Hygiene and Tropical Medicine, London, UK.,Maternal Newborn Health Group, Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK
| | - F Palestra
- World Health Organization, Geneva, Switzerland
| | | | - D Jackson
- School of Public Health, University of the Western Cape, Bellville, South Africa.,Maternal, Adolescent, Reproductive and Child Health (MARCH) Centre, London School of Hygiene & Tropical Medicine, London, UK
| | - N Roos
- Department of Medicine, Solna, Clinical Epidemiology Division, Karolinska Institutet, Stockholm, Sweden.,Karolinska University Hospital, Stockholm, Sweden
| | - A de Jonge
- Midwifery Science, AVAG (Academy Midwifery Amsterdam and Groningen), Amsterdam Public Health Research Institute, Amsterdam University Medical Centre, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.,University Medical Center Groningen, Groningen, The Netherlands
| | - P Doherty
- Options Consultancy Services Ltd, St Magnus House, London, UK
| | - A A Manu
- Epidemiology and Disease Control, School of Public Health, University of Ghana, Legon, Accra, Ghana
| | - A C Moran
- Department of Maternal, Newborn, Child, Adolescent Health & Ageing, World Health Organization, Geneva, Switzerland
| | - A S George
- School of Public Health, University of the Western Cape, Bellville, South Africa
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Olivero WC, Biswas A, Wszalek TM, Sutton BP, Johnson CL. Brain stiffness following recovery in a patient with an episode of low-pressure hydrocephalus: case report. Childs Nerv Syst 2021; 37:2695-2698. [PMID: 33030603 DOI: 10.1007/s00381-020-04922-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 10/05/2020] [Indexed: 11/24/2022]
Abstract
The authors describe a follow-up to a case of a 19-year-old female with shunted aqueductal stenosis who presented with low-pressure hydrocephalus during a shunt malfunction. Shortly after management with CSF drainage at negative pressure, a magnetic resonance elastography scan was performed and revealed very low brain stiffness (high compliance). Here we present the case of the same patient seen 2 years later, now 21 years old, who again received a magnetic resonance elastography scan after receiving treatment for another shunt malfunction, this time with high intracranial pressure. This scan revealed recovery of brain stiffness to a near normal value for the patients' age. This observation suggests the low brain stiffness observed during the low-pressure hydrocephalus event is reversible. The authors discuss these findings in relation to biomechanical hypotheses of low-pressure hydrocephalus.
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Affiliation(s)
- William C Olivero
- Carle Neuroscience Institute, Carle Foundation Hospital, Urbana, IL, USA. .,Department of Surgery, University of Illinois College of Medicine, Urbana, IL, USA. .,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
| | - Arundhati Biswas
- Carle Neuroscience Institute, Carle Foundation Hospital, Urbana, IL, USA
| | - Tracey M Wszalek
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Bradley P Sutton
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.,Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Curtis L Johnson
- Department of Biomedical Engineering, University of Delaware, Newark, DE, USA.
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Vázquez-González Y, Prieto C, Filizoglu M, Ragazzo-Sánchez J, Calderón-Santoyo M, Furtado R, Cheng H, Biswas A, Lagaron J. Electrosprayed cashew gum microparticles for the encapsulation of highly sensitive bioactive materials. Carbohydr Polym 2021; 264:118060. [DOI: 10.1016/j.carbpol.2021.118060] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 03/15/2021] [Accepted: 04/06/2021] [Indexed: 12/22/2022]
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Ahlawat S, Srinivasu K, Biswas A, Choudhury N. Distortion energy-electronic energy compensation determines the nature of solute interactions with irradiation induced vacancies in ferritic steel. Phys Chem Chem Phys 2021; 23:8689-8704. [PMID: 33876029 DOI: 10.1039/d1cp00100k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fundamental knowledge of vacancy-solute atom (in particular, Cu and Ni) interactions at the electronic level is of utmost importance to understand experimentally observed Cu-precipitation in reactor pressure vessel (RPV) steel. In the present investigation, using first-principles electronic structure calculations within the framework of density functional theory (DFT), we unravel the nature of such interactions between a vacancy (V) or di-vacancy and solute atoms (mainly Cu and Ni) in the bcc-Fe lattice. One of the very novel features of the present investigation is that we demonstrate the importance of distortion energy-electronic energy compensation in stabilizing the formation of vacancy-Cu and vacancy-Ni clusters in ferritic steel. Further decomposition of the electronic energy contribution into different bonding contributions in conjugation with differential charge density analyses clearly reveals the origin of stability as a consequence of mutual compensation of different energy modes. For both Cu-Cu and Ni-Ni interactions, the presence of a vacancy leads to a more attractive interaction, implying that such vacancies generated due to irradiation make solute aggregation easier compared with the case of model steel with no defects. We have also demonstrated that the formation of CumNin clusters (m, n = 1, 5) is energetically favorable in addition to demonstrating that the stability increases with an increasing number of Cu or Ni atoms. The rate of increase of stability with the addition of solute atoms is higher in the case of the addition of Cu atoms into a Ni cluster than it is for adding Ni atoms into a Cu cluster. The present investigation thus provides a deeper electronic level understanding of solute-point defect interaction and cluster formation probability for Cu and Ni atoms in the ferritic steel.
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Affiliation(s)
- Sarita Ahlawat
- Material Science Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
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Sarkar P, Biswas A, Abharana N, Rai S, Modi MH, Bhattacharyya D. Interface modification of Cr/Ti multilayers with C barrier layer for enhanced reflectivity in the water window regime. J Synchrotron Radiat 2021; 28:224-230. [PMID: 33399572 DOI: 10.1107/s1600577520013429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/07/2020] [Indexed: 06/12/2023]
Abstract
The influence of a carbon barrier layer to improve the reflectivity of Cr/Ti multilayers, intended to be used in the water window wavelength regime, is investigated. Specular grazing-incidence X-ray reflectivity results of Cr/Ti multilayers with 10 bilayers show that interface widths are reduced to ∼0.24 nm upon introduction of a ∼0.3 nm C barrier layer at each Cr-on-Ti interface. As the number of bilayers increases to 75, a multilayer with C barrier layers maintains almost the same interface widths with no cumulative increase in interface imperfections. Using such interface-engineered Cr/C/Ti multilayers, a remarkably high soft X-ray reflectivity of ∼31.6% is achieved at a wavelength of 2.77 nm and at a grazing angle of incidence of 16.2°, which is the highest reflectivity reported so far in the literature in this wavelength regime. Further investigation of the multilayers by diffused grazing-incidence X-ray reflectivity and grazing-incidence extended X-ray absorption fine-structure measurements using synchrotron radiation suggests that the improvement in interface microstructure can be attributed to significant suppression of inter-diffusion at Cr/Ti interfaces by the introduction of C barrier layers and also due to the smoothing effect of the C layer promoting two-dimensional growth of the multilayer.
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Affiliation(s)
- P Sarkar
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - A Biswas
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - N Abharana
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - S Rai
- Synchrotron Utilisation Section, Raja Ramnna Centre for Advanced Technology, Indore 752013, India
| | - M H Modi
- Synchrotron Utilisation Section, Raja Ramnna Centre for Advanced Technology, Indore 752013, India
| | - D Bhattacharyya
- Atomic and Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
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Earp E, Mitchell A, Biswas A. A herpetiform eruption with unexpected immunofluorescence findings. Clin Exp Dermatol 2020; 46:207-209. [PMID: 33038038 DOI: 10.1111/ced.14461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/26/2020] [Accepted: 09/08/2020] [Indexed: 11/27/2022]
Affiliation(s)
- E Earp
- Department of Dermatology, Lauriston Building, Lauriston Place, Edinburgh, UK
| | - A Mitchell
- Department of Dermatology, Lauriston Building, Lauriston Place, Edinburgh, UK
| | - A Biswas
- Department of Pathology, Western General Hospital and The University of Edinburgh, Edinburgh, UK
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Affiliation(s)
- B Somu
- Department of Medicine, All India Institute of Medical Sciences, 3rd Floor Teaching Block, New Delhi 110029, India
| | - S Halkur Shankar
- Department of Medicine, All India Institute of Medical Sciences, 3rd Floor Teaching Block, New Delhi 110029, India
| | - U Baitha
- Department of Medicine, All India Institute of Medical Sciences, 3rd Floor Teaching Block, New Delhi 110029, India
| | - A Biswas
- Department of Medicine, All India Institute of Medical Sciences, 3rd Floor Teaching Block, New Delhi 110029, India
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Sharma A, Mohanti B, Thakar A, Bhasker S, Sikka K, Singh A, Pramanik R, Kumar R, Biswas A, Deo S, Thulkar S, Bahadur S. 959P Analysis of concurrent chemo-radiation using weekly cisplatin in locally advanced SCCHN: Identification of prognostic factors. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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40
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Biswas A, Krishnan P, Amirabadi A, Blaser S, Mercimek-Andrews S, Shroff M. Expanding the Neuroimaging Phenotype of Neuronal Ceroid Lipofuscinoses. AJNR Am J Neuroradiol 2020; 41:1930-1936. [PMID: 32855186 DOI: 10.3174/ajnr.a6726] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 06/16/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Neuronal ceroid lipofuscinoses are a group of neurodegenerative disorders characterized by the accumulation of autofluorescent lipopigments in neuronal cells. As a result of storage material in the brain and retina, clinical manifestations include speech delay, cognitive dysfunction, motor regression, epilepsy, vision loss, and early death. At present, 14 different ceroid lipofuscinosis (CLN) genes are known. Recently, the FDA approved the use of recombinant human proenzyme of tripeptidyl-peptidase 1 for CLN2 disease, while phase I/IIa clinical trials for gene therapy in CLN3 and CLN6 are ongoing. Early diagnosis is, therefore, key to initiating treatment and arresting disease progression. Neuroimaging features of CLN1, CLN2, CLN3, and CLN5 diseases are well-described, with sparse literature on other subtypes. We aimed to investigate and expand the MR imaging features of genetically proved neuronal ceroid lipofuscinoses subtypes at our institution and also to report the time interval between the age of disease onset and the diagnosis of neuronal ceroid lipofuscinoses. MATERIALS AND METHODS We investigated and analyzed the age of disease onset and neuroimaging findings (signal intensity in periventricular, deep, and subcortical white matter, thalami, basal ganglia, posterior limb of the internal capsule, insular/subinsular regions, and ventral pons; and the presence or absence of supratentorial and/or infratentorial atrophy) of patients with genetically proved neuronal ceroid lipofuscinoses at our institution. This group consisted of 24 patients who underwent 40 brain MR imaging investigations between 1993 and 2019, with a male preponderance (male/female ratio = 15:9). RESULTS The mean ages of disease onset, first brain MR imaging, and diagnosis of neuronal ceroid lipofuscinoses were 4.70 ± 3.48 years, 6.76 ± 4.49 years, and 7.27 ± 4.78 years, respectively. Findings on initial brain MR imaging included T2/FLAIR hypointensity in the thalami (n = 22); T2/FLAIR hyperintensity in the periventricular and deep white matter (n = 22), posterior limb of the internal capsule (n = 22), ventral pons (n = 19), and insular/subinsular region (n = 18); supratentorial (n = 21) and infratentorial atrophy (n = 20). Eight of 9 patients who had follow-up neuroimaging showed progressive changes. CONCLUSIONS We identified reported classic neuroimaging features in all except 1 patient with neuronal ceroid lipofuscinoses in our study. CLN2, CLN5, and CLN7 diseases showed predominant cerebellar-over-cerebral atrophy. We demonstrate that abnormal signal intensity in the deep white matter, posterior limb of the internal capsule, and ventral pons is more common than previously reported in the literature. We report abnormal signal intensity in the insular/subinsular region for the first time. The difference in the median time from disease onset and diagnosis was 1.5 years.
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Affiliation(s)
- A Biswas
- From the Department of Diagnostic Imaging (A.B., P.K., A.A., S.B., M.S.), The Hospital for Sick Children, Toronto, Canada asthik.biswas@sickkids
| | - P Krishnan
- From the Department of Diagnostic Imaging (A.B., P.K., A.A., S.B., M.S.), The Hospital for Sick Children, Toronto, Canada
| | - A Amirabadi
- From the Department of Diagnostic Imaging (A.B., P.K., A.A., S.B., M.S.), The Hospital for Sick Children, Toronto, Canada
| | - S Blaser
- From the Department of Diagnostic Imaging (A.B., P.K., A.A., S.B., M.S.), The Hospital for Sick Children, Toronto, Canada
| | - S Mercimek-Andrews
- Division of Clinical and Metabolic Genetics (S.M.-A.), Department of Pediatrics, University of Toronto, The Hospital for Sick Children, Toronto, Canada
| | - M Shroff
- From the Department of Diagnostic Imaging (A.B., P.K., A.A., S.B., M.S.), The Hospital for Sick Children, Toronto, Canada
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Olabi B, Biswas A, Tidman MJ. Interdigital lesions: it's a dog's life. Clin Exp Dermatol 2020; 45:1077-1079. [PMID: 32844479 DOI: 10.1111/ced.14372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 06/17/2020] [Indexed: 11/29/2022]
Affiliation(s)
- B Olabi
- Department of Dermatology, Lauriston Building, Edinburgh, UK
| | - A Biswas
- Department of Pathology, Western General Hospital and the University of Edinburgh, Edinburgh, UK
| | - M J Tidman
- Department of Dermatology, Lauriston Building, Edinburgh, UK
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Biswas A, Iakutkina O, Wang Q, Lei HC, Dressel M, Uykur E. Spin-Reorientation-Induced Band Gap in Fe_{3}Sn_{2}: Optical Signatures of Weyl Nodes. Phys Rev Lett 2020; 125:076403. [PMID: 32857538 DOI: 10.1103/physrevlett.125.076403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
Temperature- and frequency-dependent infrared spectroscopy identifies two contributions to the electronic properties of the magnetic kagome metal Fe_{3}Sn_{2}: two-dimensional Dirac fermions and strongly correlated flat bands. The interband transitions within the linearly dispersing Dirac bands appear as a two-step feature along with a very narrow Drude component due to intraband contribution. Low-lying absorption features indicate flat bands with multiple van Hove singularities. Localized charge carriers are seen as a Drude peak shifted to finite frequencies. The spectral weight is redistributed when the spins are reoriented at low temperatures; a sharp mode appears suggesting the opening of a gap due to the spin reorientation as the sign of additional Weyl nodes in the system.
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Affiliation(s)
- A Biswas
- 1. Physikalisches Institut, Universität Stuttgart, 70569 Stuttgart, Germany
| | - O Iakutkina
- 1. Physikalisches Institut, Universität Stuttgart, 70569 Stuttgart, Germany
| | - Q Wang
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China
| | - H C Lei
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China
| | - M Dressel
- 1. Physikalisches Institut, Universität Stuttgart, 70569 Stuttgart, Germany
| | - E Uykur
- 1. Physikalisches Institut, Universität Stuttgart, 70569 Stuttgart, Germany
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Griessenauer CJ, Enriquez-Marulanda A, Taussky P, Biswas A, Grandhi R, Xiang S, Hong T, Rinaldo L, Lanzino G, Brinjikji W, Burkhardt JK, Kan P, Ghuman M, Yang VXD, Chen K, Aziz-Sultan MA, Ghorbani M, Schirmer CM, Goren O, Dalal SS, Killer-Oberpfalzer M, Müller-Thies-Broussalis E, Koch MJ, Stapleton CJ, Patel AB, Foreman PM, Cress MC, Hirschl RA, Krings T, Zhang H, Dmytriw AA. Experience With the Pipeline Embolization Device for Posterior Circulations Aneurysms: A Multicenter Cohort Study. Neurosurgery 2020; 87:1252-1261. [PMID: 32629474 DOI: 10.1093/neuros/nyaa277] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 04/23/2020] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The Pipeline Embolization Device (PED; Medtronic) has been used off-label for the treatment of challenging posterior circulation aneurysms. Data on this modality are primarily limited to small retrospective single-center series. OBJECTIVE To assess safety and efficacy of this treatment by establishing an international, multicenter collaboration. METHODS Consecutive posterior circulation aneurysms treated with the PED from 2012 to 2019 across 11 neurovascular centers were retrospectively reviewed. Baseline demographics, aneurysm and treatment characteristics, complications, occlusion status, and functional outcome were assessed. RESULTS There were 149 posterior circulation aneurysms treated with PED in 146 patients. A total of 24 (16.4%) patients presented with subarachnoid hemorrhage. Most aneurysms were dissecting/blister (36.2%) in morphology, followed by saccular (35.6%) and fusiform (28.2%). The most common locations were the vertebral (51.7%) and basilar arteries (22.8%). Complete or near-complete occlusion (>90%) was achieved in 90.9% of aneurysms at a median follow-up of 12 mo. Dissecting/blister aneurysms were most likely to occlude (P = .06). Symptomatic neurologic complications occurred in 9.4% of aneurysms, associated with larger size, ruptured presentation, presentations with brain stem compression, cranial nerve palsy, or stroke. Favorable functional outcome (modified Rankin Score 0-2) was achieved in 86.2% of patients. There were 6 fatalities of which 4 occurred in aneurysmal subarachnoid hemorrhage patients. CONCLUSION This multicenter study shows that PED for the treatment of posterior circulation is preferentially used for the treatment of fusiform and dissecting/blister aneurysm morphologies. Despite the challenges presented by these less-common morphologies, flow diversion may be performed with a neurologic complication rate of about 10% and favorable long-term aneurysm occlusion rates.
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Affiliation(s)
- Christoph J Griessenauer
- Department of Neurosurgery, Geisinger, Danville, Pennsylvania.,Research Institute of Neurointervention, Paracelsus Medical University, Salzburg, Austria
| | | | - Philipp Taussky
- Department of Neurosurgery, University of Utah, Salt Lake City, Utah
| | - Arundhati Biswas
- Department of Neurosurgery, University of Utah, Salt Lake City, Utah
| | - Ramesh Grandhi
- Department of Neurosurgery, University of Utah, Salt Lake City, Utah
| | - Sissi Xiang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Tao Hong
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Lorenzo Rinaldo
- Department of Neurological Surgery, Mayo Clinic, Rochester, Minnesota
| | - Giuseppe Lanzino
- Department of Neurological Surgery, Mayo Clinic, Rochester, Minnesota
| | - Waleed Brinjikji
- Department of Neurological Surgery, Mayo Clinic, Rochester, Minnesota
| | | | - Peter Kan
- Department of Neurosurgery, Baylor College of Medicine, Houston, Texas
| | - Mandeep Ghuman
- Departments of Medical Imaging & Neurosurgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Victor X D Yang
- Departments of Medical Imaging & Neurosurgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Karen Chen
- Departments of Radiology & Neurosurgery, Brigham and Women's Hospital, Harvard University, Boston, Massachusetts
| | - Mohammad A Aziz-Sultan
- Departments of Radiology & Neurosurgery, Brigham and Women's Hospital, Harvard University, Boston, Massachusetts
| | - Mohammad Ghorbani
- Division of Vascular and Endovascular Neurosurgery, Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Clemens M Schirmer
- Department of Neurosurgery, Geisinger, Danville, Pennsylvania.,Research Institute of Neurointervention, Paracelsus Medical University, Salzburg, Austria
| | - Oded Goren
- Department of Neurosurgery, Geisinger, Danville, Pennsylvania
| | | | - Monika Killer-Oberpfalzer
- Research Institute of Neurointervention, Paracelsus Medical University, Salzburg, Austria.,Department of Neurology, Paracelsus Medical University, Salzburg, Austria
| | - Erasmia Müller-Thies-Broussalis
- Research Institute of Neurointervention, Paracelsus Medical University, Salzburg, Austria.,Department of Neurology, Paracelsus Medical University, Salzburg, Austria
| | - Matthew J Koch
- Massachussetts General Hospital, Harvard University, Boston, Massachusetts
| | | | - Aman B Patel
- Massachussetts General Hospital, Harvard University, Boston, Massachusetts
| | - Paul M Foreman
- Neuroscience and Rehabilitation Institute, Orlando Health, Orlando, Florida
| | - Marshall C Cress
- Neuroscience and Rehabilitation Institute, Orlando Health, Orlando, Florida
| | - Robert A Hirschl
- Neuroscience and Rehabilitation Institute, Orlando Health, Orlando, Florida
| | - Timo Krings
- Division of Interventional Neuroradiology, Toronto Western Hospital, Toronto, Ontario, Canada
| | - Hongqi Zhang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Adam A Dmytriw
- Departments of Medical Imaging & Neurosurgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.,Division of Interventional Neuroradiology, Toronto Western Hospital, Toronto, Ontario, Canada
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Dubey R, Yadav A, Pawar A, Biswas A. Comparing the outcome of progenitor (CD34+) Cell dose calculated using ideal body weight to actual body weight on engraftment of neutrophils and platelets after PBSC transplant. Cytotherapy 2020. [DOI: 10.1016/j.jcyt.2020.03.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kalra S, Biswas A, Bose T, Mandal R, Kapoor T. A snapshot of children with congenital anomalies of the kidneys and urinary tract at three tertiary care centers of the armed forces. J Mar Med Soc 2020. [DOI: 10.4103/jmms.jmms_74_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Affiliation(s)
- V Kumar
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - P Jorwal
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - A Biswas
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - V Deorari
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
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Sharma A, Chaudhary M, Thakar A, Bhaskar S, Sikka K, Pramanik R, Biswas A, Singh C, Sahoo R, Deo S, Kumar R, Thulkar S, Kakkar A, Seth S, Sreenivas V. Concurrent chemotherapy and external radiation therapy: An open label non-inferiority phase III randomized controlled trial of weekly versus three weekly cisplatin and radical radiotherapy in locally advanced head and neck squamous cell carcinoma: CONCERT trial. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz252.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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48
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Biswas A, Saini D, Roy A, Mukherjee A, Gangopadhyay G. Can behavioral symptoms differentiate cortical from subcortical dementia - A comparative study of behavioral profile of Parkinson’s disease dementia and behavioral variant of frontotemporal dementia. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Devnani B, Gupta S, Haresh K, Biswas A, Pareek V, Batra M, Singh M, Tandon V, Julka P, Rath G. Impact of Adjuvant Therapy on Survival in Treatment of Central Nervous System Hemangiopericytoma. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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50
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Hegazy A, Adel MF, Abd-Allah F, Al-Shamy H, Elbassiouny A, Amin SM, El Samadoni A, Sandler A, Biswas A. The "11 O'clock Heel First" technique for microvascular end-to-side anastomosis. Neurol India 2019; 65:69-72. [PMID: 28084241 DOI: 10.4103/0028-3886.198207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND The heel of a microvascular end-to-side anastomosis is a common site for technical imperfections. We describe a simple technique to overcome this challenge. The aim of the technique is to insert all the sutures in an inside-to-outside manner at the heel area on the donor side of the anastomosis. This technique has first been tested in a laboratory setting and then was further elaborated in a clinical setting. MATERIALS AND METHODS One hundred and twenty adult albino Wistar rats of both genders were randomized into the following two groups: (A) Control, 48 rats, representing approximately 40% of the total sample, underwent the usual two anchoring stitch technique; (B) Study group, 72 rats, representing approximately 60% of the total sample, underwent the technique described. Patency was confirmed both clinically and by the use of fluorescein angiography. Rat weight, diameter of both the donor and recipient vessels, type of anastomosis (arterio-arterial or arterio-venous) and angiographic findings were used as variables. A P value of less than 0.05 was considered significant. RESULTS The proposed technique had increased patency rates as compared to the standard technique, which was statistically significant (P = 0.021). However, there was no difference between the patency rates of arterio-arterial and arterio-venous atastomoses. CONCLUSION The proposed technique is useful for perfecting the heel area of a microvascular end-to-side anastomosis in both laboratory and clinical settings.
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Affiliation(s)
- Ahmed Hegazy
- Department of Neurosurgery, Kasr Al-Ainy Medical College, Cairo University, Cairo, Egypt
| | - Mohammad Fathy Adel
- Department of Neurosurgery, Kasr Al-Ainy Medical College, Cairo University, Cairo, Egypt
| | - Foad Abd-Allah
- Department of Interventional Neurology, Ain Shams Medical College, Ain Shams University, Cairo, Egypt
| | - Hiedar Al-Shamy
- Department of Neurosurgery, Nasser Institute for Research and Treatment, Cairo, Egypt
| | - Ahmed Elbassiouny
- Department of Interventional Neurology, Ain Shams Medical College, Ain Shams University, Cairo, Egypt
| | - Sameh Mahmoud Amin
- Department of Otorhinolaryngiology and Head and Neck Surgery, Kasr Al-Ainy Medical College, Fayoum University, Egypt
| | - A El Samadoni
- Department of Neurosurgery, Kasr Al-Ainy Medical College, Cairo University, Cairo, Egypt
| | - Adam Sandler
- Department of Neurosurgery, Albert Einstein Medical College, New York, USA
| | - Arundhati Biswas
- Department of Neurosurgery, Albert Einstein Medical College, New York, USA
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