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Akiyama R, Ishii A, Kikuchi T, Okawa M, Yamao Y, Abekura Y, Ono I, Sasaki N, Tsuji H, Matsukawa S, Miyamoto S. Predictors of aneurysm shrinkage after flow diversion treatment for internal carotid artery aneurysms: quantitative volume analysis with MRI. Front Neurol 2023; 14:1266460. [PMID: 38187156 PMCID: PMC10768176 DOI: 10.3389/fneur.2023.1266460] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/08/2023] [Indexed: 01/09/2024] Open
Abstract
Background and purpose Although aneurysm shrinkage often occurs after flow diversion treatment for intracranial aneurysms, no reports have addressed the factors associated with aneurysm shrinkage. Materials and methods This retrospective single-center study was performed to examine patients with unruptured internal carotid artery aneurysms who were treated using flow diversion and followed up by imaging for at least 12 months. The study outcome was aneurysm shrinkage (volume reduction of ≥10%) 12 months after treatment. Aneurysm volume was quantitatively assessed using the MRIcroGL software. Patient and aneurysm characteristics were statistically analyzed. Results This study involved 81 patients with 88 aneurysms. At the 6 months, 12 months, and last follow-ups, the proportion of aneurysms that had shrunk was 50, 64, and 65%, respectively. No adjunctive coiling (odds ratio, 56.7; 95% confidence interval, 7.03-457.21; p < 0.001) and aneurysm occlusion (odds ratio, 90.7; 95% confidence interval, 8.32-988.66; p < 0.001) were significantly associated with aneurysm shrinkage. In patients treated by flow diversion with adjunctive coiling, only the volume embolization rate was a factor significantly associated with aneurysm shrinkage (p < 0.001). Its cutoff value was 15.5% according to the receiver operating characteristic curve analysis (area under the curve, 0.87; sensitivity, 0.87; specificity, 0.83). Conclusion The rate of aneurysm shrinkage after flow diversion increased during the first 12 months after treatment, but not thereafter. No adjunctive coiling and aneurysm occlusion were predictors of aneurysm shrinkage, respectively. If adjunctive coiling is required, a volume embolization rate of ≤15.5% may be suggested for aneurysm regression.
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Affiliation(s)
- Ryo Akiyama
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Akira Ishii
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takayuki Kikuchi
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masakazu Okawa
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yukihiro Yamao
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yu Abekura
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Isao Ono
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Neurosurgery, Hikone Municipal Hospital, Hikone, Japan
| | - Natsuhi Sasaki
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hirofumi Tsuji
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - So Matsukawa
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Susumu Miyamoto
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Cui F, Ouyang ZQ, Zeng YZ, Ling BB, Shi L, Zhu Y, Gu HY, Jiang WL, Zhou T, Sun XJ, Han D, Lu Y. Effects of hypertension on subcortical nucleus morphological alternations in patients with type 2 diabetes. Front Endocrinol (Lausanne) 2023; 14:1201281. [PMID: 37780620 PMCID: PMC10534025 DOI: 10.3389/fendo.2023.1201281] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 08/28/2023] [Indexed: 10/03/2023] Open
Abstract
Objectives Type 2 diabetes mellitus(T2DM) and hypertension(HTN) are common comorbidities, and known to affect the brain. However, little is known about the effects of the coexisting HTN on brain in T2DM patients. So we aim to investigate the impact of HTN on the subcortical nucleus morphological alternations in T2DM patients. Materials & methods This work was registered by the clinicaltrials.gov (grant number NCT03564431). We recruited a total of 92 participants, comprising 36 only T2DM patients, 28 T2DM patients with HTN(T2DMH) and 28 healthy controls(HCs) in our study. All clinical indicators were assessed and brain image data was collected for each participant. Voxel-based morphometry(VBM), automatic volume and vertex-based shape analyses were used to determine the subcortical nucleus alternations from each participant's 3D-T1 brain images and evaluate the relationship between the alternations and clinical indicators. Results T2DMH patients exhibited volumetric reduction and morphological alterations in thalamus compared to T2DM patients, whereas T2DM patients did not demonstrate any significant subcortical alterations compared to HCs. Furthermore, negative correlations have been found between thalamic alternations and the duration of HTN in T2DMH patients. Conclusion Our results revealed that HTN may exacerbate subcortical nucleus alternations in T2DM patients, which highlighted the importance of HTN management in T2DM patients to prevent further damage to the brain health.
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Affiliation(s)
- Feng Cui
- Department of Medical Imaging, Laboratory of Brain Function, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zhi-Qiang Ouyang
- Department of Medical Imaging, Laboratory of Brain Function, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yi-Zhen Zeng
- Department of Medical Imaging, Laboratory of Brain Function, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Bing-Bing Ling
- Department of Medical Imaging, Laboratory of Brain Function, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Li Shi
- Department of Endocrinology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yun Zhu
- Department of Medical Imaging, Laboratory of Brain Function, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - He-Yi Gu
- Department of Medical Imaging, Laboratory of Brain Function, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Wan-Lin Jiang
- Department of Medical Imaging, Laboratory of Brain Function, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ting Zhou
- Department of Medical Imaging, Laboratory of Brain Function, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Xue-Jin Sun
- Department of Medical Imaging, Laboratory of Brain Function, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Dan Han
- Department of Medical Imaging, Laboratory of Brain Function, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yi Lu
- Department of Medical Imaging, Laboratory of Brain Function, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
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Gaudry M, Guivier-Curien C, Blanchard A, Porto A, Bal L, Omnes V, De Masi M, Lu C, Jacquier A, Piquet P, Deplano V. Volume Analysis to Predict the Long-Term Evolution of Residual Aortic Dissection after Type A Repair. J Cardiovasc Dev Dis 2022; 9:jcdd9100349. [PMID: 36286301 PMCID: PMC9604488 DOI: 10.3390/jcdd9100349] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/26/2022] [Accepted: 10/08/2022] [Indexed: 11/05/2022] Open
Abstract
Background: The aim of this study was to evaluate the aortic diameter and volume during the first year after a type A repair to predict the long-term prognosis of a residual aortic dissection (RAD). Methods: All patients treated in our center for an acute type A dissection with a RAD and follow-up > 3 years were included. We defined two groups: group 1 with dissection-related events (defined as an aneurysmal evolution, distal reintervention, or aortic-related death) and group 2 without dissection-related events. The aortic diameters and volume analysis were evaluated on three postoperative CT scans: pre-discharge (T1), 3−6 months (T2) and 1 year (T3). Results: Between 2009 and 2016, 54 patients were included. Following a mean follow-up of 75.4 months (SD 31.5), the rate of dissection-related events was 62.9% (34/54). The total aortic diameters of the descending thoracic aorta were greater in group 1 at T1, T2 and T3, with greater diameters in the FL (p < 0.01). The aortic diameter evolution at 3 months was not predictive of long-term dissection-related events. The total thoracic aortic volume was significantly greater in group 1 at T1 (p < 0.01), T2 (p < 0.01), and T3 (p < 0.01). At 3 months, the increase in the FL volume was significantly greater in group 1 (p < 0.01) and was predictive for long-term dissection-related events. Conclusion: This study shows that an initial CT scan volume analysis coupled with another at 3 months is predictive for the long-term evolution in a RAD. Based on this finding, more aggressive treatment could be given at an earlier stage.
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Affiliation(s)
- Marine Gaudry
- Timone Aortic Center, Department of Vascular Surgery, APHM, Timone Hospital, 13005 Marseille, France
- Correspondence: ; Tel.: +33-491-388-120
| | | | - Arnaud Blanchard
- Timone Aortic Center, Department of Vascular Surgery, APHM, Timone Hospital, 13005 Marseille, France
| | - Alizée Porto
- Timone Aortic Center, Department of Vascular Surgery, APHM, Timone Hospital, 13005 Marseille, France
- Department of Cardiac Surgery, APHM, Timone Hospital, 13005 Marseille, France
| | - Laurence Bal
- Timone Aortic Center, Department of Vascular Surgery, APHM, Timone Hospital, 13005 Marseille, France
| | - Virgile Omnes
- Timone Aortic Center, Department of Vascular Surgery, APHM, Timone Hospital, 13005 Marseille, France
| | - Mariangela De Masi
- Timone Aortic Center, Department of Vascular Surgery, APHM, Timone Hospital, 13005 Marseille, France
| | - Charlotte Lu
- Department of Radiology, APHM, Timone Hospital, 13005 Marseille, France
| | - Alexis Jacquier
- Department of Radiology, APHM, Timone Hospital, 13005 Marseille, France
| | - Philippe Piquet
- Timone Aortic Center, Department of Vascular Surgery, APHM, Timone Hospital, 13005 Marseille, France
| | - Valerie Deplano
- CNRS, Centrale Marseille, IRPHE, Aix Marseille University, 13013 Marseille, France
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Subhi Y, Bjerager J, Boon CJ, van Dijk EH. Subretinal fluid morphology in chronic central serous chorioretinopathy and its relationship to treatment: a retrospective analysis on PLACE trial data. Acta Ophthalmol 2022; 100:89-95. [PMID: 33998168 PMCID: PMC9292654 DOI: 10.1111/aos.14901] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 04/18/2021] [Indexed: 01/03/2023]
Abstract
PURPOSE To explore subretinal fluid (SRF) morphology in chronic central serous chorioretinopathy (cCSC) after one session of either high-density subthreshold micropulse laser (HSML) treatment or half-dose photodynamic therapy (PDT). METHODS We retrospectively obtained optical coherence tomography (OCT) scans from a subset of patients from a randomized controlled trial on treatment-naïve eyes with cCSC allocated to either HSML treatment or half-dose PDT. OCT scans were evaluated prior to treatment and 6-8 weeks post-treatment, where we measured maximum SRF height and width, calculated the maximum height-to-maximum width-ratio (maxHWR) and calculated the total SRF volume. RESULTS Forty-one eyes of 39 cCSC patients were included. SRF morphology ranged from flat to dome-shaped, quantified as maxHWR ranging between 0.02 and 0.12. SRF volume was median 0.373 μl (range: 0.010-4.425 μl) and did not correlate to maxHWR (rho = -0.004, p = 0.982). Half-dose PDT was superior to HSML treatment in complete SRF resolution (RR = 3.28, p = 0.003) and in morphological changes of SRF (Δmaximum height , p = 0.001; Δmaximum width , p < 0.001; Δvolume , p = 0.025). SRF resolved completely in 19/22 PDT-treated eyes (86%) and 5/19 HSML-treated eyes (26%). SRF volume increased in five eyes (26%) after HSML treatment, and in none of the eyes after half-dose PDT. SRF morphology at baseline did not predict treatment outcomes. CONCLUSION SRF morphology changed after both HSML treatment and half-dose PDT in cCSC, with SRF disappearing in most PDT-treated patients, whereas SRF volume increased in a sizeable proportion of HSML-treated patients. Baseline SRF characteristics measured in this study were unable to predict outcomes after either HSML treatment or half-dose PDT.
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Affiliation(s)
- Yousif Subhi
- Department of Ophthalmology Rigshospitalet‐Glostrup Copenhagen Denmark
- Department of Ophthalmology Zealand University Hospital Roskilde Denmark
| | - Jakob Bjerager
- Department of Ophthalmology Rigshospitalet‐Glostrup Copenhagen Denmark
| | - Camiel J.F. Boon
- Department of Ophthalmology Leiden University Medical Center Leiden the Netherlands
- Department of Ophthalmology Amsterdam University Medical Centers University of Amsterdam the Netherlands
| | - Elon H.C. van Dijk
- Department of Ophthalmology Leiden University Medical Center Leiden the Netherlands
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Garza-Lopez E, Vue Z, Katti P, Neikirk K, Biete M, Lam J, Beasley HK, Marshall AG, Rodman TA, Christensen TA, Salisbury JL, Vang L, Mungai M, AshShareef S, Murray SA, Shao J, Streeter J, Glancy B, Pereira RO, Abel ED, Hinton A. Protocols for Generating Surfaces and Measuring 3D Organelle Morphology Using Amira. Cells 2021; 11:65. [PMID: 35011629 PMCID: PMC8750564 DOI: 10.3390/cells11010065] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 12/18/2021] [Accepted: 12/22/2021] [Indexed: 12/14/2022] Open
Abstract
High-resolution 3D images of organelles are of paramount importance in cellular biology. Although light microscopy and transmission electron microscopy (TEM) have provided the standard for imaging cellular structures, they cannot provide 3D images. However, recent technological advances such as serial block-face scanning electron microscopy (SBF-SEM) and focused ion beam scanning electron microscopy (FIB-SEM) provide the tools to create 3D images for the ultrastructural analysis of organelles. Here, we describe a standardized protocol using the visualization software, Amira, to quantify organelle morphologies in 3D, thereby providing accurate and reproducible measurements of these cellular substructures. We demonstrate applications of SBF-SEM and Amira to quantify mitochondria and endoplasmic reticulum (ER) structures.
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Affiliation(s)
- Edgar Garza-Lopez
- Hinton and Garza Lopez Family Consulting Company, Iowa City, IA 52246, USA;
| | - Zer Vue
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA; (Z.V.); (H.K.B.); (A.G.M.); (T.A.R.); (L.V.)
| | - Prasanna Katti
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (P.K.); (B.G.)
| | - Kit Neikirk
- Department of Biology, University of Hawaii at Hilo, Hilo, HI 96720, USA; (K.N.); (M.B.)
| | - Michelle Biete
- Department of Biology, University of Hawaii at Hilo, Hilo, HI 96720, USA; (K.N.); (M.B.)
| | - Jacob Lam
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (J.L.); (M.M.); (S.A.); (J.S.)
| | - Heather K. Beasley
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA; (Z.V.); (H.K.B.); (A.G.M.); (T.A.R.); (L.V.)
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, School of Graduate Studies and Research, Meharry Medical College, Nashville, TN 37208, USA
| | - Andrea G. Marshall
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA; (Z.V.); (H.K.B.); (A.G.M.); (T.A.R.); (L.V.)
| | - Taylor A. Rodman
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA; (Z.V.); (H.K.B.); (A.G.M.); (T.A.R.); (L.V.)
| | - Trace A. Christensen
- Microscopy and Cell Analysis Core Facility, Mayo Clinic, Rochester, MN 55905, USA; (T.A.C.); (J.L.S.)
| | - Jeffrey L. Salisbury
- Microscopy and Cell Analysis Core Facility, Mayo Clinic, Rochester, MN 55905, USA; (T.A.C.); (J.L.S.)
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA
| | - Larry Vang
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA; (Z.V.); (H.K.B.); (A.G.M.); (T.A.R.); (L.V.)
| | - Margaret Mungai
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (J.L.); (M.M.); (S.A.); (J.S.)
| | - Salma AshShareef
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (J.L.); (M.M.); (S.A.); (J.S.)
| | - Sandra A. Murray
- Department of Cell Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 52013, USA;
| | - Jianqiang Shao
- Central Microscopy Research Facility, University of Iowa, Iowa City, IA 52242, USA;
| | - Jennifer Streeter
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (J.L.); (M.M.); (S.A.); (J.S.)
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, IA 52242, USA
| | - Brian Glancy
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; (P.K.); (B.G.)
| | - Renata O. Pereira
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (J.L.); (M.M.); (S.A.); (J.S.)
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, IA 52242, USA
| | - E. Dale Abel
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; (J.L.); (M.M.); (S.A.); (J.S.)
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, IA 52242, USA
| | - Antentor Hinton
- Hinton and Garza Lopez Family Consulting Company, Iowa City, IA 52246, USA;
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA; (Z.V.); (H.K.B.); (A.G.M.); (T.A.R.); (L.V.)
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6
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Meynen A, Vles G, Zadpoor AA, Mulier M, Scheys L. The morphological variation of acetabular defects in revision total hip arthroplasty-A statistical shape modeling approach. J Orthop Res 2021; 39:2419-2427. [PMID: 33491799 DOI: 10.1002/jor.24995] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 10/22/2020] [Revised: 12/23/2020] [Accepted: 01/19/2021] [Indexed: 02/04/2023]
Abstract
Classification and evaluation of acetabular defects remain challenging and are primarily based on qualitative classification methods. That is because quantitative techniques describing variations of acetabular defects and accompanying bone loss volume are not available. This study introduces a new method based on statistical shape models (SSMs) to quantitively describe acetabular defects. This method is then applied to 87 acetabular defects to objectively describe the variations in acetabular defects typically encountered during revision total hip arthroplasty. The absolute bone loss volume, relative bone loss volume, and relative bone loss surface area with respect to the SSM-based pre-diseased anatomy were used to quantify the acetabular bone defects in different segments of the acetabular surface. The absolute bone loss volume of the average defect shape was equal to 37.0 cm3 . The first three principal modes, accounting for 62% of the total shape variation, were found to represent variations in acetabular defect morphology. The first, second, and third principal modes described, respectively, the size of the bone defects, the difference between superomedially and superolaterally migrated defects, and the degree of involvement of the posterior or anterior column. The developed SSM and the introduced approach could be used to create automated and unbiased classification methods based on quantitative data. Moreover, the proposed model and the underlying data provide the basis for a quantitative design approach where the shape and size of new acetabular implants are determined according to clinical variation present in acetabular defects.
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Affiliation(s)
- Alexander Meynen
- Department of Development and Regeneration, Faculty of Medicine, Institute for Orthopaedic Research and Training (IORT), KU Leuven, Leuven, Belgium
| | - Georges Vles
- Department of Development and Regeneration, Faculty of Medicine, Institute for Orthopaedic Research and Training (IORT), KU Leuven, Leuven, Belgium.,Division of Orthopaedics, University Hospitals Leuven, Leuven, Belgium
| | - Amir A Zadpoor
- Department of Biomechanical Engineering, Delft University of Technology, Delft, Netherlands
| | - Michiel Mulier
- Department of Development and Regeneration, Faculty of Medicine, Institute for Orthopaedic Research and Training (IORT), KU Leuven, Leuven, Belgium.,Division of Orthopaedics, University Hospitals Leuven, Leuven, Belgium
| | - Lennart Scheys
- Department of Development and Regeneration, Faculty of Medicine, Institute for Orthopaedic Research and Training (IORT), KU Leuven, Leuven, Belgium.,Division of Orthopaedics, University Hospitals Leuven, Leuven, Belgium
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Elsawaf Y, Anetsberger S, Luzzi S, Elbabaa SK. Three-Dimensional Volumetric Assessment of Resected Gliomas Assisted by Horos Imaging Software: Video Case Series of Postoperative Tumor Analyses. Cureus 2021; 13:e13571. [PMID: 33796421 PMCID: PMC8005317 DOI: 10.7759/cureus.13571] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Horos (LGPL 3.0; GNU Lesser General Public License, Version 3) is a free, open-source medical image viewer with a user-friendly interface and three-dimensional (3D) volumetric rendering capabilities. We present the use of Horos software as a postoperative tool for residual tumor volume analysis in children with high-grade gliomas (HGG). This is a case series of two pediatric patients with histologically confirmed high-grade gliomas who underwent tumor resection as definitive treatment from June 2011 to June 2019. Volumetric data and extent of resection were obtained via region of interest-based 3D analysis using Horos image-processing software. Horos software provides increased accuracy and confidence in determining the postoperative volume and is useful in assessing the impact of residual volume on outcomes in patients with high-grade gliomas. Horos software is a highly effective means of volumetric analysis for the postoperative analysis of residual volume after maximal safe resection of high-grade gliomas in pediatric patients.
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Affiliation(s)
- Yasmeen Elsawaf
- Medicine, University of Central Florida College of Medicine, Orlando, USA
| | | | - Sabino Luzzi
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, ITA
| | - Samer K Elbabaa
- Pediatric Neurosurgery, Arnold Palmer Hospital for Children, Orlando, USA
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8
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Bakıcı C, Akgun RO, Ekım O, Soydal C, Oto C. Volumetric analysis of the cranial and nasal cavity from micro-computed tomography scans in the rabbit. Folia Morphol (Warsz) 2019; 79:333-338. [PMID: 31448808 DOI: 10.5603/fm.a2019.0073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 05/10/2019] [Revised: 06/20/2019] [Accepted: 06/21/2019] [Indexed: 11/25/2022]
Abstract
BACKGROUND The aim of the study was to estimate the volume values of the cranial cavity and nasal cavity structures and to compare the efficiency of manual segmentation of three-dimensional reconstruction and Cavalieri's principle (CP) methodologies. MATERIALS AND METHODS Volume values of the cranial cavity, maxillary sinus (MS), dorsal conchal sinus (DCS), dorsal nasal meatus (DNM), middle nasal meatus (MNM), ventral nasal meatus (VNM), ventral nasal concha (VNC), middle nasal concha (MNC) and nasal vestibule (NV) were estimated with manual segmentation and CP from micro-computed tomography images in 5 male New Zealand white rabbits. Volume measurements and elapsed time were compared with each other. Three-dimensional reconstruction models of nasal and cranial cavity structures were created. RESULTS There was a statistically significant difference between methods of the MS, DCS, DNM, MNM, VNM, VNC, and MNC volume measurements. Additionally, there was a statistically significant difference between the volumetric analysis time period of the methods and CP was found much shorter than manual segmentation. CONCLUSIONS Realistic results were achieved in a short time with the CP among the stereology methods. It is thought that these image and quantitative data results can be used for modelling, toxicology and pathology studies such as acute and chronić rhinitis or rhino sinusitis as well as a good understanding of the relationship of the anatomical structures in the nasal cavity.
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Affiliation(s)
- C Bakıcı
- Department of Anatomy, Faculty of Veterinary Medicine, Ankara University, Ziraat District, Şehit Ömer Halisdemir Blvd, Altindag, 06110 Ankara, Turkey.
| | - R O Akgun
- Department of Anatomy, Faculty of Veterinary Medicine, Ankara University, Ziraat District, Şehit Ömer Halisdemir Blvd, Altindag, 06110 Ankara, Turkey
| | - O Ekım
- Department of Anatomy, Faculty of Veterinary Medicine, Ankara University, Ziraat District, Şehit Ömer Halisdemir Blvd, Altindag, 06110 Ankara, Turkey
| | - C Soydal
- Department of Nuclear Medicine, School of Medicine, Ankara University, Cebeci Hospital,, Cebeci Hospital, 06590 Ankara, Turkey
| | - C Oto
- Department of Anatomy, Faculty of Veterinary Medicine, Ankara University, Ziraat District, Şehit Ömer Halisdemir Blvd, Altindag, 06110 Ankara, Turkey
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9
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Hettich G, Schierjott RA, Ramm H, Graichen H, Jansson V, Rudert M, Traina F, Grupp TM. Method for quantitative assessment of acetabular bone defects. J Orthop Res 2019; 37:181-189. [PMID: 30345568 PMCID: PMC6588082 DOI: 10.1002/jor.24165] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 10/08/2018] [Indexed: 02/04/2023]
Abstract
The objective of the study was to suggest a novel quantitative assessment of acetabular bone defects based on a statistical shape model, validate the method, and present preliminary results. Two exemplary CT-data sets with acetabular bone defects were segmented to obtain a solid model of each defect pelvis. The pathological areas around the acetabulum were excluded and a statistical shape model was fitted to the remaining healthy bone structures. The excluded areas were extrapolated such that a solid model of the native pelvis per specimen resulted (i.e., each pelvis without defect). The validity of the reconstruction was tested by a leave-one-out study. Validation results showed median reconstruction errors of 3.0 mm for center of rotation, 1.7 mm for acetabulum diameter, 2.1° for inclination, 2.5° for anteversion, and 3.3 mm3 for bone volume around the acetabulum. By applying Boolean operations on the solid models of defect and native pelvis, bone loss and bone formation in four different sectors were assessed. For both analyzed specimens, bone loss and bone formation per sector were calculated and were consistent with the visual impression. In specimen_1 bone loss was predominant in the medial wall (10.8 ml; 79%), in specimen_2 in the posterior column (15.6 ml; 46%). This study showed the feasibility of a quantitative assessment of acetabular bone defects using a statistical shape model-based reconstruction method. Validation results showed acceptable reconstruction accuracy, also when less healthy bone remains. The method could potentially be used for implant development, pre-clinical testing, pre-operative planning, and intra-operative navigation. © 2018 The Authors. Journal of Orthopaedic Research® Published by Wiley Periodicals, Inc. on behalf of Orthopaedic Research Society. J Orthop Res 9999:1-9, 2018.
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Affiliation(s)
- Georg Hettich
- Aesculap AG, Research & DevelopmentAm Aesculap‐Platz78532 TuttlingenGermany
| | - Ronja A. Schierjott
- Aesculap AG, Research & DevelopmentAm Aesculap‐Platz78532 TuttlingenGermany,Ludwig‐Maximilians‐University MunichDepartment of Orthopaedic Surgery, Physical Medicine & RehabilitationCampus Grosshadern, Marchioninistrasse 1581377 MunichGermany
| | | | - Heiko Graichen
- Department for Arthroplasty and General Orthopaedic SurgeryOrthopaedic Hospital LindenloheLindenlohe 1892421 SchwandorfGermany
| | - Volkmar Jansson
- Ludwig‐Maximilians‐University MunichDepartment of Orthopaedic Surgery, Physical Medicine & RehabilitationCampus Grosshadern, Marchioninistrasse 1581377 MunichGermany
| | - Maximilian Rudert
- Department of Orthopaedic Surgery, König‐Ludwig‐HausJulius‐Maximilians‐University WürzburgBrettreichstraße 1197074 WürzburgGermany
| | - Francesco Traina
- University of MessinaVia Consolare Valeria 198124 MessinaItaly,Istituto Ortopedico RizzoliVia Giovanni Pupilli 140136 BolognaItaly
| | - Thomas M. Grupp
- Aesculap AG, Research & DevelopmentAm Aesculap‐Platz78532 TuttlingenGermany,Ludwig‐Maximilians‐University MunichDepartment of Orthopaedic Surgery, Physical Medicine & RehabilitationCampus Grosshadern, Marchioninistrasse 1581377 MunichGermany
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Berwouts D, De Wolf K, De Neve W, Olteanu LA, Lambert B, Speleers B, Goethals I, Madani I, Ost P. Variations in target volume definition and dose to normal tissue using anatomic versus biological imaging ( 18 F-FDG-PET) in the treatment of bone metastases: results from a 3-arm randomized phase II trial. J Med Imaging Radiat Oncol 2016; 61:124-132. [PMID: 27527354 DOI: 10.1111/1754-9485.12507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 12/17/2015] [Accepted: 07/08/2016] [Indexed: 12/25/2022]
Abstract
INTRODUCTION To report the impact on target volume delineation and dose to normal tissue using anatomic versus biological imaging (18 F-FDG-PET) for bone metastases. METHODS Patients with uncomplicated painful bone metastases were randomized (1:1:1) and blinded to receive either 8 Gy in a single fraction with conventionally planned radiotherapy (ConvRT-8 Gy) or 8 Gy in a single fraction with dose-painting-by-numbers (DPBN) dose range between 6 and 10 Gy) (DPBN-8 Gy) or 16 Gy in a single fraction with DPBN (dose range between 14 and 18 Gy) (DPBN-16 Gy). The primary endpoint was overall pain response at 1 month. Volumes of the gross tumour volume (GTV) - both biological (GTVPET ) and anatomical (GTVCT ) -, planning target volume (PTV), dose to the normal tissue and maximum standardized-uptake values (SUVMAX ) were analysed (secondary endpoint). RESULTS Sixty-three percent of the GTVCT volume did not show 18 F-FDG-uptake. On average, 20% of the GTVPET volume was outside GTVCT . The volume of normal tissue receiving 4 Gy, 6 Gy and 8 Gy was at least 3×, 6× and 13× smaller in DPBN-8 Gy compared to ConvRT-8 Gy and DPBN-16 Gy (P < 0.05). CONCLUSION Positron emitting tomography-information potentially changes the target volume for bone metastases. DPBN between 6 and 10 Gy significantly decreases dose to the normal tissue compared to conventional radiotherapy.
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Affiliation(s)
- Dieter Berwouts
- Department of Radiotherapy, Ghent University Hospital, Ghent, Belgium.,Department of Nuclear Medicine, Ghent University Hospital, Ghent, Belgium
| | - Katrien De Wolf
- Department of Radiotherapy, Ghent University Hospital, Ghent, Belgium
| | - Wilfried De Neve
- Department of Radiotherapy, Ghent University Hospital, Ghent, Belgium
| | - Luiza Am Olteanu
- Department of Radiotherapy, Ghent University Hospital, Ghent, Belgium
| | - Bieke Lambert
- Department of Nuclear Medicine, Ghent University Hospital, Ghent, Belgium
| | - Bruno Speleers
- Department of Radiotherapy, Ghent University Hospital, Ghent, Belgium
| | - Ingeborg Goethals
- Department of Nuclear Medicine, Ghent University Hospital, Ghent, Belgium
| | - Indira Madani
- Department of Radiotherapy, Ghent University Hospital, Ghent, Belgium
| | - Piet Ost
- Department of Radiotherapy, Ghent University Hospital, Ghent, Belgium
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11
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Calì C, Baghabra J, Boges DJ, Holst GR, Kreshuk A, Hamprecht FA, Srinivasan M, Lehväslaiho H, Magistretti PJ. Three-dimensional immersive virtual reality for studying cellular compartments in 3D models from EM preparations of neural tissues. J Comp Neurol 2016; 524:23-38. [PMID: 26179415 PMCID: PMC5042088 DOI: 10.1002/cne.23852] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 07/01/2015] [Accepted: 07/02/2015] [Indexed: 02/01/2023]
Abstract
Advances in the application of electron microscopy (EM) to serial imaging are opening doors to new ways of analyzing cellular structure. New and improved algorithms and workflows for manual and semiautomated segmentation allow us to observe the spatial arrangement of the smallest cellular features with unprecedented detail in full three-dimensions. From larger samples, higher complexity models can be generated; however, they pose new challenges to data management and analysis. Here we review some currently available solutions and present our approach in detail. We use the fully immersive virtual reality (VR) environment CAVE (cave automatic virtual environment), a room in which we are able to project a cellular reconstruction and visualize in 3D, to step into a world created with Blender, a free, fully customizable 3D modeling software with NeuroMorph plug-ins for visualization and analysis of EM preparations of brain tissue. Our workflow allows for full and fast reconstructions of volumes of brain neuropil using ilastik, a software tool for semiautomated segmentation of EM stacks. With this visualization environment, we can walk into the model containing neuronal and astrocytic processes to study the spatial distribution of glycogen granules, a major energy source that is selectively stored in astrocytes. The use of CAVE was key to the observation of a nonrandom distribution of glycogen, and led us to develop tools to quantitatively analyze glycogen clustering and proximity to other subcellular features.
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Affiliation(s)
- Corrado Calì
- Biological and Environmental Science and Engineering divisionKing Abdullah University of Science and Technology23955‐6900 ThuwalSaudi Arabia
| | - Jumana Baghabra
- Biological and Environmental Science and Engineering divisionKing Abdullah University of Science and Technology23955‐6900 ThuwalSaudi Arabia
| | - Daniya J. Boges
- Biological and Environmental Science and Engineering divisionKing Abdullah University of Science and Technology23955‐6900 ThuwalSaudi Arabia
| | - Glendon R. Holst
- Biological and Environmental Science and Engineering divisionKing Abdullah University of Science and Technology23955‐6900 ThuwalSaudi Arabia
| | - Anna Kreshuk
- Heidelberg Collaboratory for Image Processing (HCI)University of Heidelberg69115 HeidelbergGermany
| | - Fred A. Hamprecht
- Heidelberg Collaboratory for Image Processing (HCI)University of Heidelberg69115 HeidelbergGermany
| | - Madhusudhanan Srinivasan
- KAUST Visualization Lab (KVL)King Abdullah University of Science and Technology23955‐6900 ThuwalSaudi Arabia
| | - Heikki Lehväslaiho
- Biological and Environmental Science and Engineering divisionKing Abdullah University of Science and Technology23955‐6900 ThuwalSaudi Arabia
| | - Pierre J. Magistretti
- Biological and Environmental Science and Engineering divisionKing Abdullah University of Science and Technology23955‐6900 ThuwalSaudi Arabia
- Brain Mind InstituteÉcole Polytechnique Fédérale de Lausanne (EPFL)1005 LausanneSwitzerland
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Kessel KA, Jäger A, Habermehl D, Rüppell J, Bendl R, Debus J, Combs SE. Changes in Gross Tumor Volume and Organ Motion Analysis During Neoadjuvant Radiochemotherapy in Patients With Locally Advanced Pancreatic Cancer Using an In-House Analysis System. Technol Cancer Res Treat 2015; 15:348-54. [PMID: 25824268 DOI: 10.1177/1533034615577515] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 10/27/2014] [Accepted: 02/14/2015] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND AND PURPOSE During radiation treatment, movement of the target and organs at risks as well as tumor response can significantly influence dose distribution. This is highly relevant in patients with pancreatic cancer, where organs at risk lie in close proximity to the target. MATERIAL AND METHODS Data sets of 10 patients with locally advanced pancreatic cancer were evaluated. Gross tumor volume deformation was analyzed. Dose changes to organs at risk were determined with focus on kidneys both without adaptive radiotherapy compensation and with replanning based on weekly acquired computed tomography scans. RESULTS During irradiation, gross tumor volume changes between 0% and 26% and moves within a radius of 5 to 16 mm. Required maximal dose to organs at risk for kidneys can be met with the current practice of matching computed tomography scans during treatment and adjusting patient position accordingly. Comparison of the mean doses and V15, V20 volumes demonstrated that weekly replanning could bring a significant dose sparing of the left kidney. CONCLUSION Manual matching with focus on bony structures can lead to overall acceptable positioning of patients during treatment. Thus, tolerance doses of organs at risk, such as the kidneys, can be met. With adequate margins, normal tissue constraints to organs at risk can be kept as well. Adaptive radiotherapy approaches (in this case with weekly rescanning) reduced dose to organs at risk, which may be especially important for hypofractionated approaches.
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Affiliation(s)
- Kerstin A Kessel
- Department of Radiation Oncology, Technische Universität München (TUM), Munich, Germany
| | - Andreas Jäger
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany German Cancer Research Center (DKFZ), Department of Medical Physics in Radiation Oncology, Heidelberg, Germany
| | - Daniel Habermehl
- Department of Radiation Oncology, Technische Universität München (TUM), Munich, Germany
| | - Jan Rüppell
- German Cancer Research Center (DKFZ), Department of Medical Physics in Radiation Oncology, Heidelberg, Germany
| | - Rolf Bendl
- German Cancer Research Center (DKFZ), Department of Medical Physics in Radiation Oncology, Heidelberg, Germany Department of Medical Informatics, Heilbronn University, Heilbronn, Germany
| | - Jürgen Debus
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany German Cancer Research Center (DKFZ), Department of Medical Physics in Radiation Oncology, Heidelberg, Germany
| | - Stephanie E Combs
- Department of Radiation Oncology, Technische Universität München (TUM), Munich, Germany
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Strong EB, Fuller SC, Wiley DF, Zumbansen J, Wilson MD, Metzger MC. Preformed vs intraoperative bending of titanium mesh for orbital reconstruction. Otolaryngol Head Neck Surg 2013; 149:60-6. [PMID: 23482478 DOI: 10.1177/0194599813481430] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [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: 11/16/2022]
Abstract
OBJECTIVE The most accurate orbital reconstructions result from an anatomic repair of the premorbid orbital architecture. Many different techniques and materials have been used; unfortunately, there is currently no optimal method. This study compares the use of preformed vs intraoperative bending of titanium mesh for orbital reconstruction in 2-wall orbital fractures. STUDY DESIGN Cadaver-based study. SETTING University hospital. SUBJECTS AND METHODS Preinjury computed tomography scans were obtained in 15 cadaveric heads (30 orbits). Stereolithographic (STL) models were fabricated for 5 of the specimens (10 orbits). Two wall fractures (lamina papyracea and floor) were then generated in all orbits. Surgical reconstruction was performed in all orbits using 1 of 3 techniques (10 orbits each): (1) patient-specific implant molded from the preinjury STL model, (2) titanium mesh sheet bent freehand, and (3) preformed titanium mesh. Each technique was evaluated for orbital volume correction, contour accuracy, ease of use, and cost. RESULTS No difference in volume restoration was found between the 3 techniques. Patient-specific implants had the greatest contour accuracy, poor ease of use, and highest cost. Freehand bending implants had the poorest contour accuracy, acceptable ease of use, and lowest cost. Preformed mesh implants had intermediate contour accuracy, excellent ease of use, and low cost. CONCLUSION All 3 techniques provide equivalent orbital volume correction. However, preformed mesh implants have many advantages based on contour accuracy, ease of use, and relative cost.
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Affiliation(s)
- E Bradley Strong
- Department of Otolaryngology, University of California, Davis, California 95817, USA.
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