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Burgesson B, Ebrahimi A, Subasi O, Ashkani-Esfahani S, Kwon JY. Getting the Hindfoot Alignment and Starting Point Correct: A Technique Tip for Accurate Placement of Hindfoot Fusion Nails. Foot Ankle Orthop 2024; 9:24730114241247818. [PMID: 38680573 PMCID: PMC11047236 DOI: 10.1177/24730114241247818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024] Open
Affiliation(s)
- Bernard Burgesson
- Foot and Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Foot and Ankle Division, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Alireza Ebrahimi
- Foot and Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Omer Subasi
- Foot and Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Soheil Ashkani-Esfahani
- Foot and Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Foot and Ankle Division, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - John Y. Kwon
- Foot and Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- Foot and Ankle Division, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Kim MY, Kim SE. Mitigation of gap formation resulting from saw blade in single-cut osteotomy. J Vet Sci 2024; 25:e26. [PMID: 38568827 PMCID: PMC10990914 DOI: 10.4142/jvs.23298] [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: 11/27/2023] [Revised: 01/22/2024] [Accepted: 01/28/2024] [Indexed: 04/05/2024] Open
Abstract
Bone loss from the kerf of the sawblade may influence the final outcomes when employing three-dimensional-printed surgical guides. However, no studies have systematically addressed saw blade-induced bone loss. This study aims to quantify bone loss and propose a reduction guide to minimize the fracture gap. The postoperative gap tended to decrease as the amount of gap compensation increased. Osteotomy gaps can be attributed to the thickness of the saw blade, and the proposed methodology addresses this surgical error. Surgeons can proactively plan and design reduction guides with applied compensation using the method described in this study.
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Affiliation(s)
- Mu-Young Kim
- Department of Small Animal Clinical Sciences, University of Florida College of Veterinary Medicine, Gainesville, FL 32611, USA
| | - Stanley Eunwoo Kim
- Department of Small Animal Clinical Sciences, University of Florida College of Veterinary Medicine, Gainesville, FL 32611, USA.
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Valtanen RS, Seligson M, Huddleston HG, Angibaud L, Huddleston JI. Improved Clinical Outcomes With Dynamic, Force-Controlled, Gap-Balancing in Posterior-Stabilized Total Knee Arthroplasty. J Arthroplasty 2024:S0883-5403(24)00121-9. [PMID: 38417556 DOI: 10.1016/j.arth.2024.02.022] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/12/2024] [Accepted: 02/07/2024] [Indexed: 03/01/2024] Open
Abstract
BACKGROUND Optimal soft-tissue management in total knee arthroplasty (TKA) may reduce symptomatic instability. We hypothesized that TKA outcomes using a computer-assisted dynamic ligament balancer that acquires medial and lateral gap sizes throughout the motion arc would show improved Knee Society Scores (KSS) compared to TKAs done with a traditional tensioner at 0 and 90°. We also sought to quantify the degree to which the planned femoral rotation chosen to optimize medio-lateral balance throughout the arc of motion deviated from the femoral rotation needed to achieve a rectangular flexion gap at 90° alone. METHODS Baseline demographics, clinical outcomes, KSSs, and femoral rotations were compared in 100 consecutive, computer-assisted TKAs done with the balancer (balancer group) to the immediately prior 100 consecutive computer-assisted TKAs done without the balancer (control group). Minimum follow-up was 13 months and all patients had osteoarthritis. Mean knee motion did not differ preoperatively (110.1 ± 13.6° balancer, 110.4 ± 12.5° control, P = .44) or postoperatively (119.1 ± 10.3° balancer, 118.8 ± 10.9° control, P = .42). Tourniquet times did not differ (93.1 ± 13.0 minutes balancer, 90.7 ± 13.0 minutes control, P = .13). Postoperative length of stay differed (40.2 ± 20.9 hours balancer, 49.0 ± 18.3 hours control, P = .0009). There were 14 readmissions (7 balancer, 7 control), 11 adverse events (4 balancer, 7 control), and 3 manipulations (1 balancer, 2 control). The cohorts were compared using Student's t-tests, Shapiro-Wilk normalities, Wilcoxon rank-sums, and multivariable logistic regression analyses. RESULTS Postoperative KSS improvements were higher in the balancer group (P < .0001). In multivariable regression analyses, the balancer group experienced 7 ± 2 point improvement in KSS Knee scores (P < .0001) and 4 ± 2 point improvement in KSS Function scores (P = .040) compared to the control group. CONCLUSIONS The statistically and clinically significant improvements in postoperative KSS demonstrated in the balancer cohort are likely driven by improved stability throughout the motion arc. Further study is warranted to evaluate replicability by non-design surgeons.
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Affiliation(s)
- Rosa S Valtanen
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Redwood City, California
| | | | - Heather G Huddleston
- Department of Obstetrics and Gynecology, University of California, San Francisco School of Medicine, San Francisco, California
| | | | - James I Huddleston
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Redwood City, California
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Schutte H, Bielevelt F, Emohamadian H, Muradin MS, Bleys RL, Rosenberg AJ. The Ability to Sustain Facial Expressions. J Craniofac Surg 2024; 35:00001665-990000000-01363. [PMID: 38363317 PMCID: PMC11045549 DOI: 10.1097/scs.0000000000010054] [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: 10/24/2023] [Accepted: 01/08/2024] [Indexed: 02/17/2024] Open
Abstract
To gain more insight into facial muscle function, imaging during action would be optimal. Magnetic resonance imaging is highly suitable for visualizing facial muscles. However, magnetic resonance imaging requires the individual to remain as still as possible for a while. Knowledge of the ability to sustain facial expressions is requisite before scanning individuals. This could help adapting the scanning protocol to obtain optimal quality of imaging the muscles in action. A study, including 10 healthy volunteers, was done to perceive the extent of movement while holding facial expressions of smiling and pouting. During 6 minutes, 3-dimensional photographs were taken every consecutive minute while the participants maintained their facial expressions as motionless as possible. The movement was objectified by creating distance maps between the 2 models and calculating the Root Mean Square using the software 3DMedX. The results showed that most movements occurred in the first minute, with a decrease of the intensity of the expression. After the first minute, the expression, although less intense, could be held stable. This implies that magnetic resonance imaging scanning during facial expression is possible, provided that the scanning starts after the first minute has elapsed. In addition, results demonstrated that more slackening of the muscles while smiling compared with pouting.
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Affiliation(s)
- Hilde Schutte
- Department of Oral- and Maxillofacial Surgery, University Medical Center Utrecht, Utrecht
| | - Freek Bielevelt
- Department of Oral- and Maxillofacial Surgery, University Medical Center Utrecht, Utrecht
- Radboudumc 3D Lab, Radboud University Medical Centre, Nijmegen
| | - Hafsa Emohamadian
- Department of Oral- and Maxillofacial Surgery, University Medical Center Utrecht, Utrecht
| | - Marvick S.M. Muradin
- Department of Oral- and Maxillofacial Surgery, University Medical Center Utrecht, Utrecht
| | - Ronald L.A.W. Bleys
- Department of Functional Anatomy, University Medical Center Utrecht, Utrecht, The Netherlands
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Hernandez-Vaquero D, Noriega-Fernández A, Roncero-González S. The Alignment of the Tibial Component in Total Knee Arthroplasty: Is a Technology-Assisted System Better Than Conventional Instrumentation? Cureus 2024; 16:e54745. [PMID: 38524042 PMCID: PMC10960967 DOI: 10.7759/cureus.54745] [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] [Accepted: 02/23/2024] [Indexed: 03/26/2024] Open
Abstract
Background Technologies such as navigation and robotics are aimed at improving tibial alignment in total knee arthroplasties (TKA) and eliminating the errors resulting from the use of manual instrumentation. Methods This prospective study analyzed 130 arthroplasties in order to determine whether navigation can improve the frontal mechanical axis of the tibia and whether the postoperative angulation of this axis differs from the preoperative one. The mean patient age was 71.8 years, and the mean BMI was 31.17. Eighty-six patients were female. The same cemented TKA model and the same imageless navigation system were used in all cases. Results The mean postoperative tibial angle following implantation was 87.65°, without any statistically significant differences with respect to the previous angulation. However, navigation was seen to result in a nearly neutral tibial axis, a larger number of cases (41.5%-60.8% {p = 0.002}) aligned within the safe zone (90° ± 3°), a smaller number of outliers, and a clustering of values around the mean. Conclusions Navigation improves the frontal positioning of the tibial component in total knee arthroplasties but does not offer any advantages as compared with conventional instrumentation.
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Ding L, Patel A, Shankar S, Driscoll N, Zhou C, Rex TS, Vitale F, Gallagher MJ. An Open-Source Mouse Chronic EEG Array System with High-Density MXene-Based Skull Surface Electrodes. eNeuro 2024; 11:ENEURO.0512-22.2023. [PMID: 38388423 PMCID: PMC10884564 DOI: 10.1523/eneuro.0512-22.2023] [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: 12/16/2022] [Revised: 11/12/2023] [Accepted: 12/18/2023] [Indexed: 02/24/2024] Open
Abstract
Electroencephalography (EEG) is an indispensable tool in epilepsy, sleep, and behavioral research. In rodents, EEG recordings are typically performed with metal electrodes that traverse the skull into the epidural space. In addition to requiring major surgery, intracranial EEG is difficult to perform for more than a few electrodes, is time-intensive, and confounds experiments studying traumatic brain injury. Here, we describe an open-source cost-effective refinement of this technique for chronic mouse EEG recording. Our alternative two-channel (EEG2) and sixteen-channel high-density EEG (HdEEG) arrays use electrodes made of the novel, flexible 2D nanomaterial titanium carbide (Ti3C2T x ) MXene. The MXene electrodes are placed on the surface of the intact skull and establish an electrical connection without conductive gel or paste. Fabrication and implantation times of MXene EEG electrodes are significantly shorter than the standard approach, and recorded resting baseline and epileptiform EEG waveforms are similar to those obtained with traditional epidural electrodes. Applying HdEEG to a mild traumatic brain injury (mTBI) model in mice of both sexes revealed that mTBI significantly increased spike-wave discharge (SWD) preictal network connectivity with frequencies of interest in the β-spectral band (12-30 Hz). These findings indicate that the fabrication of MXene electrode arrays is a cost-effective, efficient technology for multichannel EEG recording in mice that obviates the need for skull-penetrating surgery. Moreover, increased preictal β-frequency network connectivity may contribute to the development of early post-mTBI SWDs.
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Affiliation(s)
- Li Ding
- Department of Neurology, Vanderbilt University School of Medicine, Nashville 37232, Tennessee
| | - Aashvi Patel
- Department of Neurology, Vanderbilt University School of Medicine, Nashville 37232, Tennessee
| | - Sneha Shankar
- Departments of Bioengineering and Neurology, Center for Neuroengineering & Therapeutics, University of Pennsylvania, Philadelphia 19104, Pennsylvania
| | - Nicolette Driscoll
- Departments of Bioengineering and Neurology, Center for Neuroengineering & Therapeutics, University of Pennsylvania, Philadelphia 19104, Pennsylvania
| | - Chengwen Zhou
- Department of Neurology, Vanderbilt University School of Medicine, Nashville 37232, Tennessee
| | - Tonia S Rex
- Department of Ophthalmology & Visual Sciences, Vanderbilt University School of Medicine, Nashville 37232, Tennessee
| | - Flavia Vitale
- Departments of Bioengineering and Neurology, Center for Neuroengineering & Therapeutics, University of Pennsylvania, Philadelphia 19104, Pennsylvania
- Center for Neurotrauma, Neurodegeneration, and Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia 19104, Pennsylvania
| | - Martin J Gallagher
- Department of Neurology, Vanderbilt University School of Medicine, Nashville 37232, Tennessee
- Department of Veteran's Affairs, Tennessee Valley Health System, Nashville 37212, Tennessee
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Sharma S, Tan E, Tran B, Siow HY, Tafesse E, Thong YHJ, Tan RJM, Son J, Todaro L, Teo J, Abduo J. Effect of pilot-guided implant placement concept on the accuracy of osteotomy preparation and implant placement. J Oral Sci 2024; 66:20-25. [PMID: 38030287 DOI: 10.2334/josnusd.23-0157] [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: 12/01/2023]
Abstract
PURPOSE To evaluate the accuracy of osteotomy preparation and implant placement for 3 pilot-guided (PG) concepts, namely, a surgical template with a metal sleeve (MS), a surgical template with an in-built nonmetal sleeve (NMS), and a surgical template with an in-built nonmetal sleeve for round bur indentation (RB). METHODS Surgical models with missing maxillary molars were studied. The MS templates were designed to accept metal sleeves, while the NMS and RB templates were designed with in-built nonmetal sleeves. Ten templates were tested per group (n = 10). After each step (pilot drilling, 2nd drilling, 3rd drilling, profiling, and implant placement), the surgical model was scanned and compared against the planning model to determine maximum horizontal deviation (MHD) and maximum angle deviation (MAD). RESULTS The MS and NMS templates exhibited a similar increase in MHD with successive drilling steps. The MAD for the pilot drilling step was significantly lower for MS than for the other groups. However, the differences among groups for MHD and MAD diminished in later steps. All templates had an MHD of 1.0 mm or less and an MAD less than 8°. CONCLUSION The investigated PG implant placement concepts resulted in similar deviations in the placed implants.
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Affiliation(s)
- Shruti Sharma
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Emilie Tan
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Britney Tran
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Hui Y Siow
- Restorative Section, Melbourne Dental School, Melbourne University
| | | | - Yoong H J Thong
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Row J M Tan
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Jungwoo Son
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Lisa Todaro
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Josephine Teo
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Jaafar Abduo
- Restorative Section, Melbourne Dental School, Melbourne University
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Costa ALF, Castilho Fardim KA, de Almeida BM, Gomes JPP, Braz-Silva PH, Dieguez FL, Cardoso CDAB, Araki AT, de Castro Lopes SLP. Eccentric movements of temporomandibular joint and upper airway volume: Three-dimensional segmentation using cone beam computed tomography. Cranio 2024; 42:10-17. [PMID: 33719936 DOI: 10.1080/08869634.2021.1894860] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE The purpose of the present investigation was to assess whether possible changes in the dynamic movements of the TMJ might cause a greater variation between the volumes of the upper airways in open- and closed-mouth positions. METHODS CBCT scans of 92 subjects were used to assess the TMJ bilaterally. All scans were acquired in closed (CM) and maximum mouth opening (MMO) positions. The difference in the volume of the oropharyngeal cavity obtained by subtracting the CM volume from the MMO volume (delta volume or volume variation) was calculated. The resulting volume was analyzed by Mann-Whitney test for variation in rotation. RESULTS A significant difference was found (p-value = 0.0188) on the right side regarding changes in the rotational movement of the condyle (Mann-Whitney test). CONCLUSION This study showed a relationship between degree of abnormal or limited rotation and variation in the upper airway volume on one side.
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Affiliation(s)
| | - Karolina Aparecida Castilho Fardim
- Department of Diagnosis and Surgery, São José dos Campos Dental School, São Paulo State University (UNESP), São José dos Campos, SP, Brazil
| | - Bruna Maciel de Almeida
- Department of Diagnosis and Surgery, São José dos Campos Dental School, São Paulo State University (UNESP), São José dos Campos, SP, Brazil
| | - João Pedro Perez Gomes
- Department of Stomatology, School of Dentistry, University of São Paulo, Sao Paulo, Brazil
| | | | - Flávia Limberg Dieguez
- Postgraduate Program in Dentistry, Cruzeiro do Sul University (UNICSUL), São Paulo, SP, Brazil
| | | | - Angela Toshie Araki
- Postgraduate Program in Dentistry, Cruzeiro do Sul University (UNICSUL), São Paulo, SP, Brazil
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Yoo HW, Park JW, Jung MJ, Yoo JJ, Kim SG, Kim YS. The prediction of liver decompensation using hepatic collagen deposition assessed by computer-assisted image analysis with Masson's trichrome stain. Scand J Gastroenterol 2024; 59:85-91. [PMID: 37724372 DOI: 10.1080/00365521.2023.2257823] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 09/06/2023] [Indexed: 09/20/2023]
Abstract
BACKGROUND & AIM The current pathologic system classifies structural deformation caused by hepatic fibrosis semi-quantitatively, which may lead to a disagreement among pathologists. We measured hepatic fibrosis quantitatively using collagen proportionate area (CPA) in compensated cirrhotic patients and assessed its impact on predicting the development of liver decompensation. METHOD From January 2010 to June 2018, we assessed 101 patients who went through liver biopsy and received diagnosis as compensated cirrhosis with digital image analysis of CPA. Clinical and laboratory data were collected at the baseline and at the time of the last follow-up or progression to liver decompensation (LD). RESULT The mean age was 50.8 ± 10.5 years, and the most common etiology of liver disease was chronic hepatitis B (48.5%), followed by alcoholic hepatitis (18.8%). The mean CPA was 16.91 ± 9.60%. The mean CPA values were different in patients with and without LD development (21.8 ± 11.1 vs. 15.2 ± 8.5). During the median follow-up of 60.0 months, 26 out of 101 patients experienced LD. Older age (hazard ratio [HR],1.069; p = 0.015), prolonged international normalized ratio (HR, 6.449; p = 0.019) and higher CPA (HR, 1.049; p = 0.040) were independent predictors of liver decompensation on multivariate cox-regression analysis. When patients were divided according to the optimal CPA threshold (26.8%), higher CPA predicted LD better than lower CPA. (Log-rank test: p < 0.001). CONCLUSION CPA could be a useful quantitative prognostic value for patients with compensated cirrhosis.
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Affiliation(s)
- Hae Won Yoo
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon, Korea
| | - Jae Woo Park
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon, Korea
| | - Min Jung Jung
- Department of Pathology, SoonChunHyang University College of Medicine, Bucheon, Korea
| | - Jeong-Ju Yoo
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon, Korea
| | - Sang Gyune Kim
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon, Korea
| | - Young Seok Kim
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon, Korea
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Zanello M, Debacker C, Moiraghi A, Peeters S, Roux A, Deboeuf L, Parraga E, Dezamis E, Chrétien F, Oppenheim C, Pallud J. Use of MR signal intensity variations to highlight structures at risk along brain biopsy trajectories. J Neurosurg 2024; 140:116-126. [PMID: 37548577 DOI: 10.3171/2023.5.jns23263] [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: 02/06/2023] [Accepted: 05/24/2023] [Indexed: 08/08/2023]
Abstract
OBJECTIVE Postoperative intracerebral hemorrhages are significant complications following brain stereotactic biopsy. They can derive from anatomical structure (sulci, vessels) damage that is missed during stereotactic trajectory planning. In this study, the authors investigated the ability to detect contact between structures at risk and stereotactic trajectories using signal analysis from MRI obtained during clinical practice, with the aim to propose a visual tool to highlight areas with anatomical structures at risk of damage along the biopsy trajectory. METHODS The authors retrospectively analyzed actual stereotactic trajectories using intraoperative imaging (intraoperative 2D radiographs in the exploratory data set and intraoperative 3D scans in the confirmatory data set). The MR signal variation along each biopsy trajectory was matched with the patient's anatomy. RESULTS In the exploratory data set (n = 154 patients), 32 contacts between the actual biopsy trajectory and an anatomical structure at risk were identified along 28 (18.2%) biopsy trajectories, corresponding to 8 preventable intracerebral hemorrhages. Variations of the mean derivative of the MR signal intensity were significantly different between trajectories with and without contact (the pathological threshold of the mean derivative of the MR signal intensity was defined as ± 0.030 arbitrary units; p < 0.0001), with a sensitivity of 89.3% and specificity of 74.6% to detect a contact. In the confirmatory data set (n = 73 patients), the sensitivity and specificity of the 0.030 threshold to detect a contact between the actual stereotactic trajectory and an anatomical structure at risk were 81.3% and 68.4%, respectively. CONCLUSIONS Variations of the mean derivative of the MR signal intensity can be converted into a green/red color code along the planned biopsy trajectory to highlight anatomical structures at risk, which can help neurosurgeons during the surgical planning of stereotactic procedures.
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Affiliation(s)
- Marc Zanello
- Departments of1Neurosurgery
- 2University Paris Cité, Paris
- 3UMR 1266, INSERM, IMA-BRAIN, Institute of Psychiatry and Neurosciences of Paris, France; and
| | - Clément Debacker
- 2University Paris Cité, Paris
- 3UMR 1266, INSERM, IMA-BRAIN, Institute of Psychiatry and Neurosciences of Paris, France; and
| | - Alessandro Moiraghi
- Departments of1Neurosurgery
- 2University Paris Cité, Paris
- 3UMR 1266, INSERM, IMA-BRAIN, Institute of Psychiatry and Neurosciences of Paris, France; and
| | - Sophie Peeters
- 4Department of Neurosurgery, University of California, Los Angeles, California
| | - Alexandre Roux
- Departments of1Neurosurgery
- 2University Paris Cité, Paris
- 3UMR 1266, INSERM, IMA-BRAIN, Institute of Psychiatry and Neurosciences of Paris, France; and
| | - Louise Deboeuf
- Departments of1Neurosurgery
- 2University Paris Cité, Paris
| | | | | | | | - Catherine Oppenheim
- 2University Paris Cité, Paris
- 3UMR 1266, INSERM, IMA-BRAIN, Institute of Psychiatry and Neurosciences of Paris, France; and
- 6Neuroradiology, GHU Paris-Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Paris
| | - Johan Pallud
- Departments of1Neurosurgery
- 2University Paris Cité, Paris
- 3UMR 1266, INSERM, IMA-BRAIN, Institute of Psychiatry and Neurosciences of Paris, France; and
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Fan Y, Wei H, Zhao R, Lin X, Bai S. Accuracy of implant placement using CAD-CAM tooth-supported surgical guides for an auricular prosthesis in vitro. J Prosthodont 2024; 33:70-76. [PMID: 36710294 DOI: 10.1111/jopr.13651] [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: 06/07/2022] [Revised: 01/11/2023] [Accepted: 01/11/2023] [Indexed: 01/31/2023] Open
Abstract
PURPOSE To evaluate the accuracy of tooth-supported surgical guides used to place implants in auricular prostheses. The accuracy (trueness and precision) of the implant positions was evaluated, and the difference between the surgical guide with and without retention of the external auditory canal (EAC) was compared. MATERIALS AND METHODS This study simulated implant placement in vitro for the treatment of right auricle malformation. Surgical guides and other casts were fabricated using additive manufacturing technology. The casts were divided into 2 groups according to the surgical guide, with 10 bone blocks in each group (with or without the EAC plug (Guides 1 and 2)). Three implant positions (Implants 1-3) were prepared for each bone block using surgical guides. Implant positions were registered using light-body silicone impressions combined with optical surface scans to measure the coronal, apical, depth, and angular deviations. Four deviations of trueness and precision were reported as the mean ± standard deviation, which was analyzed by Student's t-test. RESULTS Each group of 10 bone blocks with 30 implant positions was successfully prepared and digitally reproduced as implants. The accuracies of implant position with surgical guides were acceptable when compared with the preoperatively planned implant positions. Compared with the Guide 2 group, there was a significant difference in the apical, depth, and angular deviations of Guide 1 group in terms of precision (p = 0.001). There was a significant difference in the depth deviation of Implant 1 (p = 0.028) and apical deviation of Implant 2 (p < 0.001) compared two groups in terms of trueness. In terms of precision, there was a significant difference in the coronal (p = 0.002), apical (p = 0.001), and depth (p < 0.001) deviation of Implant 1; apical (p = 0.036) and angular (p < 0.001) deviation of Implant 2 also existed significant difference; the coronal deviation of Implant 3 (p = 0.018) also existed significant difference. Moreover, the group with the EAC plug showed lower deviation in precision and a smaller volume in the 95% confidence ellipsoid. CONCLUSION Both types of tooth-supported surgical guides can provide acceptable accuracy. A surgical guide with an EAC plug was considered to be more precise.
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Affiliation(s)
- Yiping Fan
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Digital Center, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
- Department of Stomatology, The First Medical Centre, Chinese PLA General Hospital, Beijing, P. R. China
| | - Hongbo Wei
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Oral Implants, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Ruifeng Zhao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Digital Center, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Xiuwen Lin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Digital Center, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
| | - Shizhu Bai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Digital Center, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, P. R. China
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Jones B, Michou S, Chen T, Moreno-Betancur M, Kilpatrick N, Burgner D, Vannahme C, Silva M. Caries Detection in Primary Teeth Using Intraoral Scanners Featuring Fluorescence: Protocol for a Diagnostic Agreement Study. JMIR Res Protoc 2023; 12:e51578. [PMID: 38096003 PMCID: PMC10755660 DOI: 10.2196/51578] [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: 08/07/2023] [Revised: 10/29/2023] [Accepted: 10/30/2023] [Indexed: 12/31/2023] Open
Abstract
BACKGROUND Digital methods that enable early caries identification can streamline data collection in research and optimize dental examinations for young children. Intraoral scanners are devices used for creating 3D models of teeth in dentistry and are being rapidly adopted into clinical workflows. Integrating fluorescence technology into scanner hardware can support early caries detection. However, the performance of caries detection methods using 3D models featuring color and fluorescence in primary teeth is unknown. OBJECTIVE This study aims to assess the diagnostic agreement between visual examination (VE), on-screen assessment of 3D models in approximate natural colors with and without fluorescence, and application of an automated caries scoring system to the 3D models with fluorescence for caries detection in primary teeth. METHODS The study sample will be drawn from eligible participants in a randomized controlled trial at the Royal Children's Hospital, Melbourne, Australia, where a dental assessment was conducted, including VE using the International Caries Detection and Assessment System (ICDAS) and intraoral scan using the TRIOS 4 (3Shape TRIOS A/S). Participant clinical records will be collected, and all records meeting eligibility criteria will be subject to an on-screen assessment of 3D models by 4 dental practitioners. First, all primary tooth surfaces will be examined for caries based on 3D geometry and color, using a merged ICDAS index. Second, the on-screen assessment of 3D models will include fluorescence, where caries will be classified using a merged ICDAS index that has been modified to incorporate fluorescence criteria. After 4 weeks, all examiners will repeat the on-screen assessment for all 3D models. Finally, an automated caries scoring system will be used to classify caries on primary occlusal surfaces. The agreement in the total number of caries detected per person between methods will be assessed using a Bland-Altman analysis and intraclass correlation coefficients. At a tooth surface level, agreement between methods will be estimated using multilevel models to account for the clustering of dental data. RESULTS Automated caries scoring of 3D models was completed as of October 2023, with the publication of results expected by July 2024. On-screen assessment has commenced, with the expected completion of scoring and data analysis by March 2024. Results will be disseminated by the end of 2024. CONCLUSIONS The study outcomes may inform new practices that use digital models to facilitate dental assessments. Novel approaches that enable remote dental examination without compromising the accuracy of VE have wide applications in the research environment, clinical practice, and the provision of teledentistry. TRIAL REGISTRATION Australian New Zealand Clinical Trials Registry ACTRN12622001237774; https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=384632. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) DERR1-10.2196/51578.
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Affiliation(s)
- Bree Jones
- Murdoch Children's Research Institute, Royal Children's Hospital, Darley, Australia
- Melbourne Dental School, University of Melbourne, Melbourne, Australia
| | - Stavroula Michou
- Department of Odontology, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
- 3Shape TRIOS A/S, Copenhagen, Denmark
| | - Tong Chen
- Melbourne Dental School, University of Melbourne, Melbourne, Australia
- Clinical Epidemiology & Biostatistics Unit, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, Australia
| | - Margarita Moreno-Betancur
- Clinical Epidemiology & Biostatistics Unit, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | - Nicky Kilpatrick
- Murdoch Children's Research Institute, Royal Children's Hospital, Darley, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | - David Burgner
- Murdoch Children's Research Institute, Royal Children's Hospital, Darley, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | | | - Mihiri Silva
- Murdoch Children's Research Institute, Royal Children's Hospital, Darley, Australia
- Melbourne Dental School, University of Melbourne, Melbourne, Australia
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Raabe C, Biel P, Dulla FA, Janner SFM, Abou-Ayash S, Couso-Queiruga E. Inter- and intraindividual variability in virtual single-tooth implant positioning. Clin Oral Implants Res 2023. [PMID: 37966052 DOI: 10.1111/clr.14203] [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: 07/27/2023] [Revised: 10/28/2023] [Accepted: 11/01/2023] [Indexed: 11/16/2023]
Abstract
OBJECTIVES The purpose of this prospective study was to determine the inter- and intraindividual variability in virtual single-tooth implant positioning based on the level of expertise, specialty, total time spent, and the use of a prosthetic tooth setup. MATERIALS AND METHODS Virtual implant planning was performed on matched pre- and post-extraction intraoral scans (IOS), and cone-beam computed tomography scans of 15 patients. Twelve individual examiners, involving six novices and experts from oral surgery and prosthodontics positioned the implants, first based on anatomical landmarks utilizing only the post-extraction, and second with the use of the pre-extraction IOS as a setup. The time for implant positioning was recorded. After 1 month, all virtual plannings were performed again. The individual implant positions were superimposed to obtain 3D deviations using a software algorithm. RESULTS An interindividual variability with mean angular, crestal, and apical positional deviations of 3.8 ± 1.94°, 1.11 ± 0.55, and 1.54 ± 0.66 mm, respectively, was found. When assessing intraindividual variability, deviations of 3.28 ± 1.99°, 0.78 ± 0.46, and 1.12 ± 0.61 mm, respectively, were observed. Implants planned by experts exhibited statistically lower deviations compared to those planned by novices. Longer planning times resulted in lower deviations in the experts' group but not in the novices. Oral surgeons demonstrated lower crestal, but not angular and apical deviations than prosthodontists. The use of a setup only led to minor adjustments. CONCLUSIONS Substantial inter- and intraindividual variability exists during implant positioning utilizing specialized software planning. The level of expertise and the time invested influenced the deviations of the implant position during the planning sequence.
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Affiliation(s)
- Clemens Raabe
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Philippe Biel
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Fabrice A Dulla
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Simone F M Janner
- Clinic of Oral Surgery, University Center for Dental Medicine Basel UZB, University of Basel, Basel, Switzerland
- Surgery Center ZIKO Bern, Bern, Switzerland
| | - Samir Abou-Ayash
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Emilio Couso-Queiruga
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
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Brasil VP, Siqueira RM, Campos FG, Yoshitani MM, Pereira GP, Mendonça RLDS, Kanno DT, Pereira JA, Martinez CAR. Mucin levels in glands of the colonic mucosa of rats with diversion colitis subjected to enemas containing sucralfate and n-acetylcysteine alone or in combination. Acta Cir Bras 2023; 38:e384023. [PMID: 37851785 PMCID: PMC10578094 DOI: 10.1590/acb384023] [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: 06/06/2023] [Accepted: 07/17/2023] [Indexed: 10/20/2023] Open
Abstract
PURPOSE To evaluate the tissue content of neutral and acidic mucins, sulfomucins and sialomucins in colonic glands devoid of intestinal transit after enemas containing sucralfate and n-acetylcysteine alone or in combination. METHODS Sixty-four rats underwent intestinal transit bypass. A colonic segment was collected to compose the white group (without intervention). After derivation, the animals were divided into two groups according to whether enemas were performed daily for two or four weeks. Each group was subdivided into four subgroups according to the substance used: control group: saline 0.9%; sucralfate group (SCF): SCF 2 g/kg/day; n-acetylcysteine group (NAC): NAC 100 mg/kg/day; and SCF+NAC group: SCF 2 g/kg/day + NAC 100 mg/kg/day.Neutral and acidic mucins were stained by periodic acid-Schiff and alcian-blue techniques, respectively. The distinction between sulfomucins and sialomucin was made by the high alcian-blue iron diamine technique. The content of mucins in the colonic glands was measured by computerized morphometry. The inflammatory score was assessed using a validated scale. The results between the groups were compared by the Mann-Whitney's test, while the variation according to time by the Kruskal-Wallis' test (Dunn's post-test). A significance level of 5% was adopted. RESULTS There was reduction in the inflammatory score regardless of the application of isolated or associated substances. Intervention with SCF+NAC increased the content of all mucin subtypes regardless of intervention time. CONCLUSIONS The application of SCF+NAC reduced the inflammatory process of the colonic mucosa and increased the content of different types of mucins in the colonic glands of segments excluded from fecal transit.
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Affiliation(s)
- Verena Palmeiras Brasil
- Universidade Estadual de Campinas – Postgraduate Program in Surgical Sciences – Campinas (São Paulo) – Brazil
| | - Rayama Moreira Siqueira
- Universidade Estadual de Campinas – Postgraduate Program in Surgical Sciences – Campinas (São Paulo) – Brazil
| | - Fabio Guilherme Campos
- Universidade de São Paulo – Department of Gastroenterology – Faculty of Medicine – São Paulo (São Paulo) – Brazil
| | - Mateus Magami Yoshitani
- Universidade São Francisco – Faculty of Medicine – Medical School – Bragança Paulista (São Paulo) – Brazil
| | - Geovanna Pacciulli Pereira
- Universidade São Francisco – Faculty of Medicine – Medical School – Bragança Paulista (São Paulo) – Brazil
| | | | - Danilo Toshio Kanno
- Universidade São Francisco – Faculty of Medicine – Medical School – Bragança Paulista (São Paulo) – Brazil
| | - José Aires Pereira
- Universidade São Francisco – Faculty of Medicine – Medical School – Bragança Paulista (São Paulo) – Brazil
| | - Carlos Augusto Real Martinez
- Universidade Estadual de Campinas – Postgraduate Program in Surgical Sciences – Campinas (São Paulo) – Brazil
- Universidade São Francisco – Faculty of Medicine – Medical School – Bragança Paulista (São Paulo) – Brazil
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Smárason O, Guzick AG, Goodman WK, Salloum A, Storch EA. Predictors and Moderators of Treatment Outcomes for Anxious Children Randomized to Computer-Assisted Cognitive Behavioral Therapy or Standard Community Care. J Child Adolesc Psychopharmacol 2023; 33:316-324. [PMID: 37861988 PMCID: PMC10616955 DOI: 10.1089/cap.2023.0019] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Introduction: Computer-assisted cognitive behavioral therapy (CCBT) for childhood anxiety disorders may aid the dissemination of CBT, while maintaining treatment fidelity. Although CCBT is an effective intervention, not everyone benefits equally from treatment. Identifying patient characteristics that predict who will benefit from treatment and to what extent can help with matching patients to suitable interventions, and allow researchers and clinicians to modify, and individualize, their treatment formats more effectively. Such predictors and moderators have not yet been examined for CCBT outcomes in anxious children and studies of more traditional treatment formats have yielded inconsistent results. Methods: Using data from a randomized clinical trial evaluating CCBT for children with anxiety disorders, this study examined predictors and moderators of treatment outcomes in a sample of 100 children (age: mean [M] = 9.82, standard deviation [SD] = 1.82), randomized to either CCBT (n = 49) or standard community care (n = 51). Potential predictors and moderators were identified from the literature and examined in stepwise multiple linear regression models, using posttreatment anxiety severity and global impairment as outcomes. Results: Parent-rated internalizing symptoms predicted posttreatment anxiety severity for both treatment groups. High pretreatment levels of anxiety severity predicted higher global impairment at posttreatment for the group receiving community care, but not for the CCBT group. Conclusion: Further research is needed to clarify which patient characteristics are associated with CCBT outcomes in a consistent way. ClinicalTrials.gov identifier: NCT01416805.
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Affiliation(s)
- Orri Smárason
- Faculty of Psychology, University of Iceland, Reykjavik, Iceland
- Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas, USA
| | - Andrew G. Guzick
- Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas, USA
| | - Wayne K. Goodman
- Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas, USA
| | - Alison Salloum
- School of Social Work, University of South Florida, Tampa, Florida, USA
| | - Eric A. Storch
- Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas, USA
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Remschmidt B, Rieder M, Gsaxner C, Gaessler J, Payer M, Wallner J. Augmented Reality-Guided Apicoectomy Based on Maxillofacial CBCT Scans. Diagnostics (Basel) 2023; 13:3037. [PMID: 37835780 PMCID: PMC10572956 DOI: 10.3390/diagnostics13193037] [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: 08/14/2023] [Revised: 09/13/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023] Open
Abstract
Implementation of augmented reality (AR) image guidance systems using preoperative cone beam computed tomography (CBCT) scans in apicoectomies promises to help surgeons overcome iatrogenic complications associated with this procedure. This study aims to evaluate the intraoperative feasibility and usability of HoloLens 2, an established AR image guidance device, in the context of apicoectomies. Three experienced surgeons carried out four AR-guided apicoectomies each on human cadaver head specimens. Preparation and operating times of each procedure, as well as the subjective usability of HoloLens for AR image guidance in apicoectomies using the System Usability Scale (SUS), were measured. In total, twelve AR-guided apicoectomies on six human cadaver head specimens were performed (n = 12). The average preparation time amounted to 162 (±34) s. The surgical procedure itself took on average 9 (±2) min. There was no statistically significant difference between the three surgeons. Quantification of the usability of HoloLens revealed a mean SUS score of 80.4 (±6.8), indicating an "excellent" usability level. In conclusion, this study implies the suitability, practicality, and simplicity of AR image guidance systems such as the HoloLens in apicoectomies and advocates their routine implementation.
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Affiliation(s)
- Bernhard Remschmidt
- Division of Oral and Maxillofacial Surgery, Department of Dental Medicine and Oral Health, Medical University of Graz, 8036 Graz, Austria
- Division of Oral Surgery and Orthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria
| | - Marcus Rieder
- Division of Oral and Maxillofacial Surgery, Department of Dental Medicine and Oral Health, Medical University of Graz, 8036 Graz, Austria
- Division of Oral Surgery and Orthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria
| | - Christina Gsaxner
- Institute of Computer Graphics and Vision, Graz University of Technology, 8010 Graz, Austria
| | - Jan Gaessler
- Division of Oral and Maxillofacial Surgery, Department of Dental Medicine and Oral Health, Medical University of Graz, 8036 Graz, Austria
- Division of Oral Surgery and Orthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria
| | - Michael Payer
- Division of Oral Surgery and Orthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria
| | - Juergen Wallner
- Division of Oral and Maxillofacial Surgery, Department of Dental Medicine and Oral Health, Medical University of Graz, 8036 Graz, Austria
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Marzec-Schmidt K, Ghosheh N, Stahlschmidt SR, Küppers-Munther B, Synnergren J, Ulfenborg B. Artificial Intelligence Supports Automated Characterization of Differentiated Human Pluripotent Stem Cells. Stem Cells 2023; 41:850-861. [PMID: 37357747 PMCID: PMC10502778 DOI: 10.1093/stmcls/sxad049] [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: 03/26/2023] [Accepted: 06/05/2023] [Indexed: 06/27/2023]
Abstract
Revolutionary advances in AI and deep learning in recent years have resulted in an upsurge of papers exploring applications within the biomedical field. Within stem cell research, promising results have been reported from analyses of microscopy images to, that is, distinguish between pluripotent stem cells and differentiated cell types derived from stem cells. In this work, we investigated the possibility of using a deep learning model to predict the differentiation stage of pluripotent stem cells undergoing differentiation toward hepatocytes, based on morphological features of cell cultures. We were able to achieve close to perfect classification of images from early and late time points during differentiation, and this aligned very well with the experimental validation of cell identity and function. Our results suggest that deep learning models can distinguish between different cell morphologies, and provide alternative means of semi-automated functional characterization of stem cell cultures.
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Affiliation(s)
- Katarzyna Marzec-Schmidt
- Department of Soil and Environment, Swedish University of Agricultural Sciences (SLU), Skara, Sweden
| | - Nidal Ghosheh
- Takara Bio Europe, Gothenburg, Sweden
- Department of Biology and Bioinformatics, School of Bioscience, University of Skövde, Skövde, Sweden
| | | | | | - Jane Synnergren
- Department of Biology and Bioinformatics, School of Bioscience, University of Skövde, Skövde, Sweden
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Benjamin Ulfenborg
- Department of Biology and Bioinformatics, School of Bioscience, University of Skövde, Skövde, Sweden
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Ogura Y, Shimano M, Bise R, Yamashita T, Katagiri C, Sato I. Analysis of optical absorption of photoaged human skin using a high-frequency illumination microscopy analysis system. Exp Dermatol 2023; 32:1402-1411. [PMID: 37264684 DOI: 10.1111/exd.14840] [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: 10/16/2022] [Revised: 04/04/2023] [Accepted: 05/07/2023] [Indexed: 06/03/2023]
Abstract
Skin is composed of different layers, including the stratum corneum, epidermal living layer and papillary and reticular dermis. Each has specific optical properties due to differences in their biological components. Alterations in the skin's cutaneous biological components resulting from photoaging caused by chronic exposure to UV light affect the deterioration of appearance associated with the skin's optical properties. Various methods for analysing cutaneous optical properties have been previously proposed, including mathematical models and computer simulations. However, these were insufficient to elucidate changes in each skin layer and comprehensively understand the skin's integrated optical properties. We focused on UV-induced yellowing of the facial skin. We evaluated site-specific optical absorption of human skin tissue sections to investigate the yellowish discoloration, which is suggested to be related to the photodamage process. The method includes our original technique of separating the transmitted and scattered light using high-frequency illumination microscopy, leading to microscopic analysis of the tissue's optical absorption in the regions of interest. In analysing the sun-exposed facial skin tissue sections, we successfully showed that dermal regions of aged skin have increased absorption at 450 nm, where yellowish colours are complemented. Furthermore, we confirmed that elastic fibres with observable histological disorder resulting from photodamage are a prominent source of high optical absorption. We detected changes in the skin's optical absorption associated with dermal degeneration resulting from photodamage using a novel optical microscopy technique. The results provide a base for the evaluation of optical property changes for both yellowing discoloration and other tissue disorders.
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Affiliation(s)
- Yuki Ogura
- Shiseido Global Innovation Center, Yokohama, Japan
| | | | - Ryoma Bise
- Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka, Japan
| | | | | | - Imari Sato
- National Institute of Informatics, Tokyo, Japan
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Domingues JG, Araujo DC, Costa-Silva L, Machado AMC, Machado LAC, Veloso AA, Barreto SM, Telles RW. Development of a convolutional neural network for diagnosing osteoarthritis, trained with knee radiographs from the ELSA-Brasil Musculoskeletal. Radiol Bras 2023; 56:248-254. [PMID: 38204901 PMCID: PMC10775807 DOI: 10.1590/0100-3984.2023.0020-en] [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: 03/01/2023] [Revised: 05/05/2023] [Accepted: 07/19/2023] [Indexed: 01/12/2024] Open
Abstract
Objective To develop a convolutional neural network (CNN) model, trained with the Brazilian "Estudo Longitudinal de Saúde do Adulto Musculoesquelético" (ELSA-Brasil MSK, Longitudinal Study of Adult Health, Musculoskeletal) baseline radiographic examinations, for the automated classification of knee osteoarthritis. Materials and Methods This was a cross-sectional study carried out with 5,660 baseline posteroanterior knee radiographs from the ELSA-Brasil MSK database (5,660 baseline posteroanterior knee radiographs). The examinations were interpreted by a radiologist with specific training, and the calibration was as established previously. Results The CNN presented an area under the receiver operating characteristic curve of 0.866 (95% CI: 0.842-0.882). The model can be optimized to achieve, not simultaneously, maximum values of 0.907 for accuracy, 0.938 for sensitivity, and 0.994 for specificity. Conclusion The proposed CNN can be used as a screening tool, reducing the total number of examinations evaluated by the radiologists of the study, and as a double-reading tool, contributing to the reduction of possible interpretation errors.
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Affiliation(s)
- Júlio Guerra Domingues
- Faculdade de Medicina da Universidade Federal de Minas Gerais
(UFMG), Belo Horizonte, MG, Brazil
| | - Daniella Castro Araujo
- Instituto de Ciências Exatas da Universidade Federal de
Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
- Huna-AI, São Paulo, SP, Brazil
| | | | | | - Luciana Andrade Carneiro Machado
- Hospital das Clínicas da Universidade Federal de Minas
Gerais (UFMG)/Empresa Brasileira de Serviços Hospitalares (EBSERH), Belo
Horizonte, MG, Brazil
| | - Adriano Alonso Veloso
- Instituto de Ciências Exatas da Universidade Federal de
Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Sandhi Maria Barreto
- Faculdade de Medicina da Universidade Federal de Minas Gerais
(UFMG), Belo Horizonte, MG, Brazil
- Hospital das Clínicas da Universidade Federal de Minas
Gerais (UFMG)/Empresa Brasileira de Serviços Hospitalares (EBSERH), Belo
Horizonte, MG, Brazil
| | - Rosa Weiss Telles
- Faculdade de Medicina da Universidade Federal de Minas Gerais
(UFMG), Belo Horizonte, MG, Brazil
- Hospital das Clínicas da Universidade Federal de Minas
Gerais (UFMG)/Empresa Brasileira de Serviços Hospitalares (EBSERH), Belo
Horizonte, MG, Brazil
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Yang H, Xu L, Li Y, Jiang H, Ni W, Gu Y. Computer-Assisted Microcatheter Shaping for Intracranial Aneurysm Embolization. Brain Sci 2023; 13:1273. [PMID: 37759874 PMCID: PMC10526415 DOI: 10.3390/brainsci13091273] [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: 05/25/2023] [Revised: 08/16/2023] [Accepted: 08/23/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND This study investigates the accuracy, stability, and safety of computer-assisted microcatheter shaping for intracranial aneurysm coiling. METHODS Using the solid model, a microcatheter was shaped using computer-assisted techniques or manually to investigate the accuracy and delivery of microcatheter-shaping techniques in aneurysm embolization. Then, forty-eight patients were randomly assigned to the computer-assisted microcatheter-shaping (CAMS) group or the manual microcatheter-shaping (MMS) group, and the accuracy, stability, and safety of microcatheter in the patients were compared between the CAMS and MMS groups. RESULTS The speed of the successful microcatheter position was significantly faster in the CAMS group than in the MMS group (114.4 ± 23.99 s vs. 201.9 ± 24.54 s, p = 0.015) in vitro. In particular for inexperienced operators, the speed of the microcatheter position with the assistance of computer software is much faster than manual microcatheter shaping (93.6 ± 29.23 s vs. 228.9 ± 31.27 s, p = 0.005). In vivo, the time of the microcatheter position in the MMS group was significantly longer than that in the CAMS group (5.16 ± 0.46 min vs. 2.48 ± 0.32 min, p = 0.0001). However, the mRS score at discharge, the 6-month follow-up, and aneurysm regrowth at the 6-month follow-up were all similar between the groups. CONCLUSIONS Computer-assisted microcatheter shaping is a novel and safe method for microcatheter shaping that introduces higher accuracy in microcatheter shaping during the treatment of intracranial aneurysms. SIGNIFICANT Endovascular coiling of intracranial aneurysms can be truly revolutionized through computer assistance, which could improve the endovascular treatment of aneurysms.
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Affiliation(s)
- Heng Yang
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China; (H.Y.); (L.X.); (Y.L.); (H.J.); (Y.G.)
- Neurosurgical Institute, Fudan University, Shanghai 200040, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai 200040, China
- National Center for Neurological Disorders, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China
| | - Liquan Xu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China; (H.Y.); (L.X.); (Y.L.); (H.J.); (Y.G.)
- Neurosurgical Institute, Fudan University, Shanghai 200040, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai 200040, China
- National Center for Neurological Disorders, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China
| | - Yanjiang Li
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China; (H.Y.); (L.X.); (Y.L.); (H.J.); (Y.G.)
- Neurosurgical Institute, Fudan University, Shanghai 200040, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai 200040, China
- National Center for Neurological Disorders, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China
| | - Hanqiang Jiang
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China; (H.Y.); (L.X.); (Y.L.); (H.J.); (Y.G.)
- Neurosurgical Institute, Fudan University, Shanghai 200040, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai 200040, China
- National Center for Neurological Disorders, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China
| | - Wei Ni
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China; (H.Y.); (L.X.); (Y.L.); (H.J.); (Y.G.)
- Neurosurgical Institute, Fudan University, Shanghai 200040, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai 200040, China
- National Center for Neurological Disorders, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China
| | - Yuxiang Gu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China; (H.Y.); (L.X.); (Y.L.); (H.J.); (Y.G.)
- Neurosurgical Institute, Fudan University, Shanghai 200040, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai 200040, China
- National Center for Neurological Disorders, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China
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de Caneda MAG, Rizzo MRL, Furlin G, Kupske A, Valentini BB, Ortiz RF, Silva CBDO, de Vecino MCA. Interrater reliability for the detection of cortical lesions on phase-sensitive inversion recovery magnetic resonance imaging in patients with multiple sclerosis. Radiol Bras 2023; 56:187-194. [PMID: 37829590 PMCID: PMC10567094 DOI: 10.1590/0100-3984.2022.0116] [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: 12/03/2022] [Revised: 02/15/2023] [Accepted: 05/09/2023] [Indexed: 10/14/2023] Open
Abstract
Objective To assess the reliability of phase-sensitive inversion recovery (PSIR) magnetic resonance imaging (MRI) and its accuracy for determining the topography of demyelinating cortical lesions in patients with multiple sclerosis (MS). Materials and Methods This was a cross-sectional study conducted at a tertiary referral center for MS and other demyelinating disorders. We assessed the agreement among three raters for the detection and topographic classification of cortical lesions on fluid-attenuated inversion recovery (FLAIR) and PSIR sequences in patients with MS. Results We recruited 71 patients with MS. The PSIR sequences detected 50% more lesions than did the FLAIR sequences. For detecting cortical lesions, the level of interrater agreement was satisfactory, with a mean free-response kappa (κFR) coefficient of 0.60, whereas the mean κFR for the topographic reclassification of the lesions was 0.57. On PSIR sequences, the raters reclassified 366 lesions (20% of the lesions detected on FLAIR sequences), with excellent interrater agreement. There was a significant correlation between the total number of lesions detected on PSIR sequences and the Expanded Disability Status Scale score (ρ = 0.35; p < 0.001). Conclusion It seems that PSIR sequences perform better than do FLAIR sequences, with clinically satisfactory interrater agreement, for the detection and topographic classification of cortical lesions. In our sample of patients with MS, the PSIR MRI findings were significantly associated with the disability status, which could influence decisions regarding the treatment of such patients.
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22
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Hamilton WG, Sershon RA, Gupta A, Goldstein L, Kabiri M, Holy CE, Diaz R. Readmission rate and healthcare utilization outcomes of computer-assisted fluoroscopy-based hip navigation versus manual total hip arthroplasty. Expert Rev Med Devices 2023; 20:779-789. [PMID: 37466357 DOI: 10.1080/17434440.2023.2238609] [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: 05/24/2023] [Revised: 06/17/2023] [Accepted: 06/23/2023] [Indexed: 07/20/2023]
Abstract
INTRODUCTION The study evaluates the technology of fluoroscopy-based hip navigation that has shown to improve implant positioning in total hip arthroplasty (THA). METHODS Premier Healthcare data for patients undergoing manual THA or fluoroscopy-based hip navigation THA between 1 January 2016-30 September 2021, were analyzed 90- and 365-day post-THA. The primary outcome was inpatient readmission. Secondary outcomes were operating room (OR) time, length of stay, discharge status, and hospital costs. Baseline covariate differences were balanced using fine stratification and analyzed using generalized linear models. RESULTS Among 4,080 fluoroscopy-based hip navigation THA and 429,533 manual THA balanced patients, hip-related readmission rates were statistically significantly lower for the fluoroscopy-based hip navigation THA cohort vs. manual THA for both 90-day (odd ratio [95% CI]: 0.69 [0.52 to 0.91] and 365-day (0.63 [0.49 to 0.81] follow-up. OR time was higher with fluoroscopy-based hip navigation THA vs. manual THA (134.65 vs. 132.04 minutes); however, fluoroscopy-based hip navigation THA patients were more likely to be discharged to home (93.73% vs. 90.11%) vs. manual THA. Hospital costs were not different between cohorts at 90- and 365-day post-operative. CONCLUSIONS Fluoroscopy-based hip navigation THA resulted in fewer readmissions, greater discharge to home, and similar hospital costs compared to manual THA.
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Affiliation(s)
| | | | - Anshu Gupta
- Epidemiology & Real-World Data Sciences, Johnson & Johnson MedTech, New Brunswick, NJ, USA
| | - Laura Goldstein
- DePuy Synthes Digital, Robotics & Emerging Channels, Raynham, MA, USA
| | - Mina Kabiri
- DePuy Synthes Digital, Robotics & Emerging Channels, Raynham, MA, USA
| | - Chantal E Holy
- Epidemiology & Real-World Data Sciences, Johnson & Johnson MedTech, New Brunswick, NJ, USA
| | - Rodrigo Diaz
- DePuy Synthes, Medical Affairs, Palm Beach Gardens, FL, USA
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Tavakoli K, Sazgar AK, Hasanzade A, Sazgar AA. Ideal Nasal Preferences: A Quantitative Investigation with 3D Imaging in the Iranian Population. Arch Plast Surg 2023; 50:340-347. [PMID: 37564715 PMCID: PMC10411228 DOI: 10.1055/a-2091-6820] [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: 12/10/2022] [Accepted: 04/15/2023] [Indexed: 08/12/2023] Open
Abstract
Background Though in facial plastic surgery, the ideal nasal characteristics are defined by average European-American facial features known as neoclassical cannons, many ethnicities do not perceive these characteristics as suitable. Methods To investigate the preferences for nasofrontal angle, nasolabial angle, dorsal height, alar width, and nasal tip projection, manipulated pictures of one male and one female model were shown to 203 volunteer patients from a tertiary university hospital's facial plastic clinic. Results The most aesthetically preferred nasofrontal angles were 137.64 ± 4.20 degrees for males and 133.55 ± 4.53 degrees for females. Acute nasofrontal angles were more desirable in participants aged 25 to 44. The most preferred nasolabial angles were 107.56 ± 5.20 degrees and 98.92 ± 4.88 degrees, respectively. Volunteers aged 19 to 24 preferred more acute male nasolabial angles. A straight dorsum was the most desirable in both genders (0.03 ± 0.78 and 0.26 ± 0.75 mm, respectively). The ideal male and female alar widths were -0.51 ± 2.26 and -1.09 ± 2.18 mm, respectively. More 45- to 64-year-old volunteers preferred alar widths equal to intercanthal distance. The ideal female and male tip projections were 0.57 ± 0.01 and 0.56 ± 0.01, respectively. Conclusion Results indicate that the general Iranian patients prefer thinner female noses with wider nasofrontal angles for both genders. However, the ideal nasolabial angles, dorsal heights, and tip projections were consistent with the neoclassical cannons. Besides ethnic differences, the trend of nasal beauty is also affected by gender, age, and prior history of aesthetic surgery.
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Affiliation(s)
- Kiarash Tavakoli
- Department of Otolaryngology, Head and Neck Surgery, Otorhinolaryngology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir K. Sazgar
- Department of Otolaryngology, Head and Neck Surgery, Otorhinolaryngology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Arman Hasanzade
- School of Medicine, Medical School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir A. Sazgar
- Department of Otolaryngology, Head and Neck Surgery, Otorhinolaryngology Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Kormi E, Peltola E, Lusila N, Heliövaara A, Leikola J, Suojanen J. Unilateral Cleft Lip and Palate Has Asymmetry of Bony Orbits: A Retrospective Study. J Pers Med 2023; 13:1067. [PMID: 37511680 PMCID: PMC10381611 DOI: 10.3390/jpm13071067] [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: 04/29/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/30/2023] Open
Abstract
Facial asymmetry is common in unilateral clefts. Since virtual surgical planning (VSP) is becoming more common and automated segmentation is utilized more often, the position and asymmetry of the orbits can affect the design outcome. The aim of this study is to evaluate whether non-syndromic unilateral cleft lip and palate (UCLP) patients requiring orthognathic surgery have asymmetry of the bony orbits. Retrospectively, we analyzed the preoperative cone-beam computed tomography (CBCT) or computed tomography (CT) data of UCLP (n = 15) patients scheduled for a Le Fort 1 (n = 10) or bimaxillary osteotomy (n = 5) with VSP at the Cleft Palate and Craniofacial Center, Helsinki University Hospital. The width, height, and depth of the bony orbit and the distance between the sella turcica and infraorbital canal were measured. A volumetric analysis of the orbits was also performed. The measurements were tested for distribution, and the cleft side and the contralateral side were compared statistically with a two-sided paired t-test. To assess asymmetry in the non-cleft population, we performed the same measurements of skeletal class III patients undergoing orthognathic surgery at Päijät-Häme Central Hospital (n = 16). The volume of bony orbit was statistically significantly smaller (p = 0.014), the distance from the infraorbital canal to sella turcica was shorter (p = 0.019), and the anatomical location of the orbit was more medio-posterior on the cleft side than on the contralateral side. The non-cleft group showed no statistically significant asymmetry in any measurements. According to these preliminary results, UCLP patients undergoing orthognathic surgery show asymmetry of the bony orbit not seen in skeletal class III patients without a cleft. This should be considered in VSP for the correction of maxillary hypoplasia and facial asymmetry in patients with UCLP.
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Affiliation(s)
- Eeva Kormi
- Päijät-Häme Joint Authority for Health and Wellbeing, Department of Oral and Maxillofacial Surgery, Päijät-Häme Central Hospital, 15850 Lahti, Finland
| | - Elina Peltola
- HUS Diagnostic Center, Radiology, Helsinki University Hospital, 00029 Helsinki, Finland
| | - Niilo Lusila
- Päijät-Häme Joint Authority for Health and Wellbeing, Department of Radiology, Päijät-Häme Central Hospital, 15850 Lahti, Finland
| | - Arja Heliövaara
- Cleft Palate and Craniofacial Centre, Department of Plastic Surgery, Helsinki University Hospital, 00029 Helsinki, Finland
| | - Junnu Leikola
- Cleft Palate and Craniofacial Centre, Department of Plastic Surgery, Helsinki University Hospital, 00029 Helsinki, Finland
| | - Juho Suojanen
- Päijät-Häme Joint Authority for Health and Wellbeing, Department of Oral and Maxillofacial Surgery, Päijät-Häme Central Hospital, 15850 Lahti, Finland
- Cleft Palate and Craniofacial Centre, Department of Plastic Surgery, Helsinki University Hospital, 00029 Helsinki, Finland
- Clinicum, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
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25
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Zhang S, Yang Z, Chen X, Su S, Huang R, Huang L, Shen Y, Zhong S, Zhong Z, Yang J, Long W, Zhuang R, Fang J, Dai Z, Chen X. Development of a CT image analysis-based scoring system to differentiate gastric schwannomas from gastrointestinal stromal tumors. Front Oncol 2023; 13:1057979. [PMID: 37448513 PMCID: PMC10338089 DOI: 10.3389/fonc.2023.1057979] [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] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 06/13/2023] [Indexed: 07/15/2023] Open
Abstract
Purpose To develop a point-based scoring system (PSS) based on contrast-enhanced computed tomography (CT) qualitative and quantitative features to differentiate gastric schwannomas (GSs) from gastrointestinal stromal tumors (GISTs). Methods This retrospective study included 51 consecutive GS patients and 147 GIST patients. Clinical and CT features of the tumors were collected and compared. Univariate and multivariate logistic regression analyses using the stepwise forward method were used to determine the risk factors for GSs and create a PSS. Area under the receiver operating characteristic curve (AUC) analysis was performed to evaluate the diagnostic efficiency of PSS. Results The CT attenuation value of tumors in venous phase images, tumor-to-spleen ratio in venous phase images, tumor location, growth pattern, and tumor surface ulceration were identified as predictors for GSs and were assigned scores based on the PSS. Within the PSS, GS prediction probability ranged from 0.60% to 100% and increased as the total risk scores increased. The AUC of PSS in differentiating GSs from GISTs was 0.915 (95% CI: 0.874-0.957) with a total cutoff score of 3.0, accuracy of 0.848, sensitivity of 0.843, and specificity of 0.850. Conclusions The PSS of both qualitative and quantitative CT features can provide an easy tool for radiologists to successfully differentiate GS from GIST prior to surgery.
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Affiliation(s)
- Sheng Zhang
- Department of Radiology, Meizhou People's Hospital, Meizhou, China
| | - Zhiqi Yang
- Department of Radiology, Meizhou People's Hospital, Meizhou, China
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou People's Hospital, Meizhou, China
| | - Xiaofeng Chen
- Department of Radiology, Meizhou People's Hospital, Meizhou, China
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou People's Hospital, Meizhou, China
| | - Shuyan Su
- Department of Radiology, First Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Ruibin Huang
- Department of Radiology, First Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Liebin Huang
- Department of Radiology, Jiangmen Central Hospital, Guangdong, China
| | - Yanyan Shen
- Department of Radiology, The First Affiliated Hospital of Huzhou University, Huzhou, Zhejiang, China
| | - Sihua Zhong
- Research Center Institute, United Imaging Healthcare, Shanghai, China
| | - Zijie Zhong
- Department of Radiology, Shantou Central Hospital, Shantou, Guangdong, China
| | - Jiada Yang
- Department of Radiology, Meizhou People's Hospital, Meizhou, China
| | - Wansheng Long
- Department of Radiology, Jiangmen Central Hospital, Guangdong, China
| | - Ruyao Zhuang
- Department of Radiology, First Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Jingqin Fang
- Department of Radiology, Daping Hospital, Army Medical University, Chongqing, China
| | - Zhuozhi Dai
- Department of Radiology, Shantou Central Hospital, Shantou, Guangdong, China
- Department of Radiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiangguang Chen
- Department of Radiology, Meizhou People's Hospital, Meizhou, China
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Lyell D, Wang Y, Coiera E, Magrabi F. More than algorithms: an analysis of safety events involving ML-enabled medical devices reported to the FDA. J Am Med Inform Assoc 2023; 30:1227-1236. [PMID: 37071804 PMCID: PMC10280342 DOI: 10.1093/jamia/ocad065] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 09/15/2022] [Revised: 03/13/2023] [Accepted: 03/30/2023] [Indexed: 04/20/2023] Open
Abstract
OBJECTIVE To examine the real-world safety problems involving machine learning (ML)-enabled medical devices. MATERIALS AND METHODS We analyzed 266 safety events involving approved ML medical devices reported to the US FDA's MAUDE program between 2015 and October 2021. Events were reviewed against an existing framework for safety problems with Health IT to identify whether a reported problem was due to the ML device (device problem) or its use, and key contributors to the problem. Consequences of events were also classified. RESULTS Events described hazards with potential to harm (66%), actual harm (16%), consequences for healthcare delivery (9%), near misses that would have led to harm if not for intervention (4%), no harm or consequences (3%), and complaints (2%). While most events involved device problems (93%), use problems (7%) were 4 times more likely to harm (relative risk 4.2; 95% CI 2.5-7). Problems with data input to ML devices were the top contributor to events (82%). DISCUSSION Much of what is known about ML safety comes from case studies and the theoretical limitations of ML. We contribute a systematic analysis of ML safety problems captured as part of the FDA's routine post-market surveillance. Most problems involved devices and concerned the acquisition of data for processing by algorithms. However, problems with the use of devices were more likely to harm. CONCLUSIONS Safety problems with ML devices involve more than algorithms, highlighting the need for a whole-of-system approach to safe implementation with a special focus on how users interact with devices.
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Affiliation(s)
- David Lyell
- Centre for Health Informatics, Australian Institute of Health Innovation, Macquarie University, NSW 2109, Australia
| | - Ying Wang
- Centre for Health Informatics, Australian Institute of Health Innovation, Macquarie University, NSW 2109, Australia
| | - Enrico Coiera
- Centre for Health Informatics, Australian Institute of Health Innovation, Macquarie University, NSW 2109, Australia
| | - Farah Magrabi
- Centre for Health Informatics, Australian Institute of Health Innovation, Macquarie University, NSW 2109, Australia
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27
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Das H, Fudge T, Hernandez B, McGregor TB, Kirkpatrick IDC, Kaushik D, Mansour AM, Svatek RS, Liss MA, Gelfond J, Pruthi DK. Volumetric Analysis of Renal Masses as Predictors of Partial Nephrectomy Outcomes. J Endourol 2023; 37:673-680. [PMID: 37166349 DOI: 10.1089/end.2022.0558] [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] [Indexed: 05/12/2023] Open
Abstract
Objective: To examine the role of endophytic tumor volume (TV) assessment (endophycity) on perioperative partial nephrectomy (PN) outcomes. Patients and Methods: Retrospective review of 212 consecutive laparoscopic and open partial nephrectomies from single institution using preoperative imaging and 1-year follow-up. Demographics, comorbidities, RENAL nephrometry scores, and all peri- and postoperative outcomes were recorded. Volumetric analysis performed using imaging software, independently assessed by two blinded radiologists. Univariate and multivariate statistical analysis were completed to assess predictive value of endophycity for all clinically meaningful outcomes. Results: Among those undergoing minimally invasive surgery (MIS), lower tumor endophycity was associated with higher likelihood of trifecta outcome (negative surgical margin, <10% decline in estimated glomerular filtration rate, the absence of complications) irrespective of max tumor size. For MIS, estimated blood loss increased with greater tumor endophycity regardless of tumor size. Among those who underwent open partial nephrectomy, lower tumor endophycity was associated with trifecta outcomes for tumors >4 cm only. On multivariate analysis with log-scaled odds ratios (OR), tumor endophycity and total kidney volume had the strongest correlation with tumor-related complications (OR = 3.23, 2.66). The analysis identified that tumor endophycity and TV on imaging were inversely correlated with of trifecta outcomes (OR = 0.53 for both covariates). Conclusions: Volumetric assessment of tumor endophycity performed well in identifying PN outcomes. As automated imaging software improves, volumetric analysis may prove to be a useful adjunct in preoperative planning and patient counseling.
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Affiliation(s)
- Hrishikesh Das
- Department of Urology, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Thomas Fudge
- Department of Diagnostic Radiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Brian Hernandez
- Department of Biostatistics, University of Texas Health San Antonio, San Antonio, Texas, USA
| | | | - Iain D C Kirkpatrick
- Department of Diagnostic Radiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Dharam Kaushik
- Department of Urology, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Ahmed M Mansour
- Department of Urology, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Robert S Svatek
- Department of Urology, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Michael A Liss
- Department of Urology, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Jonathan Gelfond
- Department of Biostatistics, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Deepak K Pruthi
- Department of Urology, University of Texas Health San Antonio, San Antonio, Texas, USA
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28
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Chen J, Zhuang M, Tao B, Wu Y, Ye L, Wang F. Accuracy of immediate dental implant placement with task-autonomous robotic system and navigation system: An in vitro study. Clin Oral Implants Res 2023. [PMID: 37248610 DOI: 10.1111/clr.14104] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/28/2023] [Accepted: 05/18/2023] [Indexed: 05/31/2023]
Abstract
OBJECTIVES The aim of this study was to compare the accuracy of dental implant placement in a single tooth gap, including the postextraction site and healed site, using a task-autonomous robotic system and a dynamic navigation system. MATERIALS AND METHODS Forty partially edentulous models requiring both immediate and conventional implant placement were randomly divided into a robotic system group and a navigation system group. The coronal, apical, and angular deviations of the implants were measured and assessed between the groups. RESULTS The deviations in immediate implant placement were compared between the robotic system and dynamic navigation system groups, showing a mean (±SD) coronal deviation of 0.86 ± 0.36 versus 0.70 ± 0.21 mm (p = .101), a mean apical deviation of 0.77 ± 0.34 versus 0.95 ± 0.38 mm (p = .127), and a mean angular deviation of 1.94 ± 0.66° versus 3.44 ± 1.38° (p < .001). At the healed site, significantly smaller coronal deviation (0.46 ± 0.29 vs. 0.70 ± 0.30 mm, p = .005), apical deviation (0.56 ± 0.30 vs. 0.85 ± 0.25 mm, p < .001), and angular deviation (1.36 ± 0.54 vs. 1.80 ± 0.70 mm, p = .034) were found in the robotic system group than in the dynamic navigation group. CONCLUSIONS The position in both immediate and conventional implant placement was more precise with the task-autonomous robotic system than with the dynamic navigation system. Its performance in actual clinical applications should be confirmed in further trials.
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Affiliation(s)
- Jinyan Chen
- Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Minjie Zhuang
- Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Baoxin Tao
- Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Yiqun Wu
- Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Lijuan Ye
- Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Feng Wang
- Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
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Ewals LJS, van der Wulp K, van den Borne BEEM, Pluyter JR, Jacobs I, Mavroeidis D, van der Sommen F, Nederend J. The Effects of Artificial Intelligence Assistance on the Radiologists' Assessment of Lung Nodules on CT Scans: A Systematic Review. J Clin Med 2023; 12:jcm12103536. [PMID: 37240643 DOI: 10.3390/jcm12103536] [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: 03/15/2023] [Revised: 04/19/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
To reduce the number of missed or misdiagnosed lung nodules on CT scans by radiologists, many Artificial Intelligence (AI) algorithms have been developed. Some algorithms are currently being implemented in clinical practice, but the question is whether radiologists and patients really benefit from the use of these novel tools. This study aimed to review how AI assistance for lung nodule assessment on CT scans affects the performances of radiologists. We searched for studies that evaluated radiologists' performances in the detection or malignancy prediction of lung nodules with and without AI assistance. Concerning detection, radiologists achieved with AI assistance a higher sensitivity and AUC, while the specificity was slightly lower. Concerning malignancy prediction, radiologists achieved with AI assistance generally a higher sensitivity, specificity and AUC. The radiologists' workflows of using the AI assistance were often only described in limited detail in the papers. As recent studies showed improved performances of radiologists with AI assistance, AI assistance for lung nodule assessment holds great promise. To achieve added value of AI tools for lung nodule assessment in clinical practice, more research is required on the clinical validation of AI tools, impact on follow-up recommendations and ways of using AI tools.
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Affiliation(s)
- Lotte J S Ewals
- Department of Radiology, Catharina Cancer Institute, Catharina Hospital Eindhoven, 5623 EJ Eindhoven, The Netherlands
- Department of Electrical Engineering, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands
| | - Kasper van der Wulp
- Department of Radiology, Catharina Cancer Institute, Catharina Hospital Eindhoven, 5623 EJ Eindhoven, The Netherlands
| | - Ben E E M van den Borne
- Department of Pulmonology, Catharina Cancer Institute, Catharina Hospital Eindhoven, 5623 EJ Eindhoven, The Netherlands
| | - Jon R Pluyter
- Department of Experience Design, Royal Philips, 5656 AE Eindhoven, The Netherlands
| | - Igor Jacobs
- Department of Hospital Services and Informatics, Philips Research, 5656 AE Eindhoven, The Netherlands
| | - Dimitrios Mavroeidis
- Department of Data Science, Philips Research, 5656 AE Eindhoven, The Netherlands
| | - Fons van der Sommen
- Department of Electrical Engineering, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands
| | - Joost Nederend
- Department of Radiology, Catharina Cancer Institute, Catharina Hospital Eindhoven, 5623 EJ Eindhoven, The Netherlands
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30
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Franco PN, Spasiano CM, Maino C, De Ponti E, Ragusi M, Giandola T, Terrani S, Peroni M, Corso R, Ippolito D. Principles and Applications of Dual-Layer Spectral CT in Gastrointestinal Imaging. Diagnostics (Basel) 2023; 13:diagnostics13101740. [PMID: 37238224 DOI: 10.3390/diagnostics13101740] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 04/22/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023] Open
Abstract
The advance in technology allows for the development of different CT scanners in the field of dual-energy computed tomography (DECT). In particular, a recently developed detector-based technology can collect data from different energy levels, thanks to its layers. The use of this system is suited for material decomposition with perfect spatial and temporal registration. Thanks to post-processing techniques, these scanners can generate conventional, material decomposition (including virtual non-contrast (VNC), iodine maps, Z-effective imaging, and uric acid pair images) and virtual monoenergetic images (VMIs). In recent years, different studies have been published regarding the use of DECT in clinical practice. On these bases, considering that different papers have been published using the DECT technology, a review regarding its clinical application can be useful. We focused on the usefulness of DECT technology in gastrointestinal imaging, where DECT plays an important role.
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Affiliation(s)
- Paolo Niccolò Franco
- Department of Diagnostic Radiology, Fondazione IRCCS San Gerardo dei Tintori, Via Pergolesi 33, 20900 Monza, Italy
| | - Chiara Maria Spasiano
- Department of Diagnostic Radiology, Istituti Clinici Zucchi, Via Zucchi 24, 20900 Monza, Italy
| | - Cesare Maino
- Department of Diagnostic Radiology, Fondazione IRCCS San Gerardo dei Tintori, Via Pergolesi 33, 20900 Monza, Italy
| | - Elena De Ponti
- Department of Medical Physics, Fondazione IRCCS San Gerardo dei Tintori, Via Pergolesi 33, 20900 Monza, Italy
| | - Maria Ragusi
- Department of Diagnostic Radiology, Fondazione IRCCS San Gerardo dei Tintori, Via Pergolesi 33, 20900 Monza, Italy
| | - Teresa Giandola
- Department of Diagnostic Radiology, Fondazione IRCCS San Gerardo dei Tintori, Via Pergolesi 33, 20900 Monza, Italy
| | | | - Marta Peroni
- Philips Healtcare, Viale Sarca 54, 20126 Milano, Italy
| | - Rocco Corso
- Department of Diagnostic Radiology, Fondazione IRCCS San Gerardo dei Tintori, Via Pergolesi 33, 20900 Monza, Italy
| | - Davide Ippolito
- Department of Diagnostic Radiology, Fondazione IRCCS San Gerardo dei Tintori, Via Pergolesi 33, 20900 Monza, Italy
- School of Medicine, Università Milano-Bicocca, Piazza dell'Ateneo Nuovo, 1, 20100 Milano, Italy
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Galli M, Mendonça G, Meneghetti P, Bekkali M, Travan S, Wang HL, Li J. Sleeveless guided implant placement compared to conventional approaches: An in vitro study at healed sites and fresh extraction sockets. Int J Oral Implantol (Berl) 2023; 16:117-132. [PMID: 37158181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
PURPOSE To investigate the accuracy of a novel sleeveless implant surgical guide by comparing it with a conventional closed-sleeve guide and a freehand approach. MATERIALS AND METHODS Custom resin maxillary casts with corticocancellous compartments were used (n = 30). Seven implant sites were present per maxillary cast, corresponding to healed (right and left first premolars, left second premolar and first molar) and extraction sites (right canine and central incisors). The casts were assigned into three groups: freehand (FH), conventional closed-sleeve guide (CG) and surgical guide (SG) groups. Each group comprised 10 casts and 70 implant sites (30 extraction sites and 40 healed sites). Digital planning was used to design 3D printed conventional and surgical guide templates. The primary study outcome was implant deviation. RESULTS At extraction sites, the largest difference between groups occurred in angular deviation, where the SG group (3.80 ± 1.67 degrees) exhibited ~1.6 times smaller deviation relative to the FH group (6.02 ± 3.44 degrees; P = 0.004). The CG group (0.69 ± 0.40 mm) exhibited smaller coronal horizontal deviation compared to the SG group (1.08 ± 0.54 mm; P = 0.005). For healed sites, the largest difference occurred for angular deviation, where the SG group (2.31 ± 1.30 degrees) exhibited 1.9 times smaller deviation relative to the CG group (4.42 ± 1.51 degrees; P < 0.001), and 1.7 times smaller deviation relative to the FH group (3.84 ± 2.14 degrees). Significant differences were found for all parameters except depth and coronal horizontal deviation. For the guided groups, there were fewer significant differences between healed and immediate sites compared to the FH group. CONCLUSION The novel sleeveless surgical guide showed similar accuracy to the conventional closed-sleeve guide.
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Leitão ALA, Fonda UDS, Buchpiguel CA, Willegaignon J, Sapienza MT. Validation of automated image co-registration integrated into in-house software for voxel-based internal dosimetry on single-photon emission computed tomography images. Radiol Bras 2023; 56:137-144. [PMID: 37564075 PMCID: PMC10411763 DOI: 10.1590/0100-3984.2022.0096] [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: 09/28/2022] [Accepted: 03/30/2023] [Indexed: 08/12/2023] Open
Abstract
Objective To develop an automated co-registration system and test its performance, with and without a fiducial marker, on single-photon emission computed tomography (SPECT) images. Materials and Methods Three SPECT/CT scans were acquired for each rotation of a Jaszczak phantom (to 0°, 5°, and 10° in relation to the bed axis), with and without a fiducial marker. Two rigid co-registration software packages-SPM12 and NMDose-coreg-were employed, and the percent root mean square error (%RMSE) was calculated in order to assess the quality of the co-registrations. Uniformity, contrast, and resolution were measured before and after co-registration. The NMDose-coreg software was employed to calculate the renal doses in 12 patients treated with 177Lu-DOTATATE, and we compared those with the values obtained with the Organ Level INternal Dose Assessment for EXponential Modeling (OLINDA/EXM) software. Results The use of a fiducial marker had no significant effect on the quality of co-registration on SPECT images, as measured by %RMSE (p = 0.40). After co-registration, uniformity, contrast, and resolution did not differ between the images acquired with fiducial markers and those acquired without. Preliminary clinical application showed mean total processing times of 9 ± 3 min/patient for NMDose-coreg and 64 ± 10 min/patient for OLINDA/EXM, with a strong correlation between the two, despite the lower renal doses obtained with NMDose-coreg. Conclusion The use of NMDose-coreg allows fast co-registration of SPECT images, with no loss of uniformity, contrast, or resolution. The use of a fiducial marker does not appear to increase the accuracy of co-registration on phantoms.
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Affiliation(s)
| | - Uysha de Souza Fonda
- Hospital das Clínicas - Faculdade de Medicina da
Universidade de São Paulo (HC-FMUSP), São Paulo, SP, Brazil
| | - Carlos Alberto Buchpiguel
- Department of Radiology and Oncology - Faculdade de Medicina da
Universidade de São Paulo (FMUSP), São Paulo, SP, Brazil
| | - José Willegaignon
- Department of Nuclear Medicine - Instituto do Câncer do
Estado de São Paulo (Icesp), São Paulo, SP, Brazil
| | - Marcelo Tatit Sapienza
- Department of Radiology and Oncology - Faculdade de Medicina da
Universidade de São Paulo (FMUSP), São Paulo, SP, Brazil
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Fleiderman Valenzuela JG, Cirillo Totera JI, Turkieltaub DH, Echaurren CV, Álvarez Lemos FL, Arriagada Ramos FI. Spino-pelvic radiological parameters: Comparison of measurements obtained by radiologists using the traditional method versus spine surgeons using a semi-automated software (Surgimap). Acta Radiol Open 2023; 12:20584601231177404. [PMID: 37223123 PMCID: PMC10201147 DOI: 10.1177/20584601231177404] [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: 09/13/2022] [Accepted: 05/04/2023] [Indexed: 05/25/2023] Open
Abstract
Background Spinopelvic balance measurement is a key point to get an appropriate diagnosis and treatment in a group of spine pathologies; thus, it seems necessary the evaluation of different methods for obtaining the most reliable values. For that reason, different automatic and semi-automatic computer-assisted tools have been developed, and one example of them is Surgimap. Purpose To demonstrate that the sagittal balance measurements with Surgimap are equal and more time-efficient than with Agfa-Enterprise. Material and Methods Retrospective-prospective study. Biased comparative analysis of radiographic measurements performed on two different occasions (96 h interval), between two spine surgeons using Surgimap and two radiologists using the traditional Cobb method (TCM) with the Agfa-Enterprise program in 36 full spine lateral X-ray, determining inter- and intra-observer reliability and the mean time required to obtain the measurements. Results Measurements with both methods demonstrated an excellent intra-observer correlation (Surgimap: PCC 0.95 [0.85-0.99]; TCM: PCC 0.90 [0.81-0.99]). Inter-observer correlation also demonstrated an excellent relationship (PCC >0.95). Thoracic kyphosis (TK) demonstrated the lowest levels of inter-observer correlation (PCC: 0.75). The average time in seconds with TCM was 154.6, while with the Surgimap it was 41.8 s. Conclusion Surgimap proved to be equally reliable and 3.5 times faster. Therefore, in consistency with the available literature, our results would allow us to promote the use of Surgimap as a clinical diagnostic tool considering precision and efficiency.
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Zhang G, Zhu L, Huang R, Xu Y, Lu X, Chen Y, Li C, Lei Y, Luo X, Li Z, Yi S, He J, Zheng C. A deep learning model for the differential diagnosis of benign and malignant salivary gland tumors based on ultrasound imaging and clinical data. Quant Imaging Med Surg 2023; 13:2989-3000. [PMID: 37179911 PMCID: PMC10167466 DOI: 10.21037/qims-22-950] [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: 09/11/2022] [Accepted: 03/24/2023] [Indexed: 05/15/2023]
Abstract
Background The preoperative differentiation between benign parotid gland tumors (BPGTs) and malignant parotid gland tumors (MPGTs) is of great significance for therapeutic decision-making. Deep learning (DL), an artificial intelligence algorithm based on neural networks, can help overcome inconsistencies in conventional ultrasonic (CUS) examination outcomes. Therefore, as an auxiliary diagnostic tool, DL can support accurate diagnosis using massive ultrasonic (US) images. This current study developed and validated a DL-based US diagnosis for the preoperative differentiation of BPGT from MPGT. Methods A total of 266 patients, including 178 patients with BPGT and 88 patients with MPGT, were consecutively identified from a pathology database and enrolled in this study. Ultimately, considering the limitations of the DL model, 173 patients were selected from the 266 patients and divided into 2 groups: a training set, and a testing set. US images of the 173 patients were used to construct the training set (including 66 benign and 66 malignant PGTs) and testing set (consisting of 21 benign and 20 malignant PGTs). These were then preprocessed by normalizing the grayscale of each image and reducing noise. Processed images were imported into the DL model, which was then trained to predict the images from the testing set and evaluated for performance. Based on the training and validation datasets, the diagnostic performance of the 3 models was assessed and verified using receiver operating characteristic (ROC) curves. Ultimately, before and after combining the clinical data, we compared the area under the curve (AUC) and diagnostic accuracy of the DL model with the opinions of trained radiologists to evaluate the application value of the DL model in US diagnosis. Results The DL model showed a significantly higher AUC value compared to doctor 1 + clinical data, doctor 2 + clinical data, and doctor 3 + clinical data (AUC =0.9583 vs. 0.6250, 0.7250, and 0.8025 respectively; all P<0.05). In addition, the sensitivity of the DL model was higher than the sensitivities of the doctors combined with clinical data (97.2% vs. 65%, 80%, and 90% for doctor 1 + clinical data, doctor 2 + clinical data, and doctor 3 + clinical data, respectively; all P<0.05). Conclusions The DL-based US imaging diagnostic model has excellent performance in differentiating BPGT from MPGT, supporting its value as a diagnostic tool for the clinical decision-making process.
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Affiliation(s)
- Gang Zhang
- Department of Ultrasound, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
- School of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, China
| | - Li Zhu
- Department of Ultrasound, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
- Department of Endocrinology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Rong Huang
- Department of Endocrinology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yushan Xu
- Department of Endocrinology, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xiaokai Lu
- Department of Ultrasound, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yumei Chen
- Department of Ultrasound, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Chen Li
- Office of Academic Research, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yujie Lei
- Office of Academic Research, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xiaomao Luo
- Department of Ultrasound, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Zhiyao Li
- Department of Ultrasound, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Sanli Yi
- School of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, China
| | - Jianfeng He
- School of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, China
| | - Chenhong Zheng
- Department of Ultrasound, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
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Molina-Payá FJ, Ríos-Díaz J, Carrasco-Martínez F, Martínez-Payá JJ. Infrared Thermography, Intratendon Vascular Resistance, and Echotexture in Athletes with Patellar Tendinopathy: A Cross-Sectional Study. Ultrason Imaging 2023; 45:47-61. [PMID: 36779568 DOI: 10.1177/01617346231153581] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Ultrasonographic signs of tendinopathies are an increase in thickness, loss of alignment in collagen fibers and the presence of neovascularization. Nevertheless, analysis of intratendinous vascular resistance (IVR) can be more useful for understanding the physiological state of the tissue. To show thermal, echotextural, and Doppler signal differences in athletes with patellar tendinopathy and controls. Twenty-six athletes with patellar tendinopathy (PT) participants (30.1 years; SD = 9.0 years) and 27 asymptomatic athletes (23.3 years; SD = 5.38 years) were evaluated with thermographic and Doppler ultrasonography (DS). Area of Doppler signals (DS), echotextural parameters (echointensity and echovariation) and IVR were determined by image analysis. The statistical analysis was performed by Bayesian methods and the results were showed by Bayes Factor (BF10: probability of alternative hypothesis over null hypothesis), and Credibility intervals (CrI) of the effect. The absolute differences of temperature (TD) were clearly greater (BF10 = 19) in the tendinopathy group (patients) than in controls. Regarding temperature differences between the affected and healthy limb, strong evidence was found (BF10 = 14) for a higher temperature (effect = 0.53°C; 95% CrI = 0.15°C-0.95°C) and very strong for reduced IVR compared (BF10 = 71) (effect = -0.67; 95% CrI = -1.10 to 0.25). The differences in area of DS (BF10 = 266) and EV (BF10 = 266) were higher in tendinopathy group. TD showed a moderate positive correlation with VISA-P scores (tau-B = .29; 95% CrI = .04-.51) and strong correlation with IVR (r = -.553; 95%CrI = -.75 to .18). Athletes with patellar tendinopathy showed a more pronounced thermal difference, a larger area of Doppler signal, a lower IVR and a moderately higher echovariaton than controls. The correlation between temperature changes and IVR might be related with the coexistence of degenerative and inflammatory process in PT.
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Affiliation(s)
| | - José Ríos-Díaz
- Universidad Pontificia Comillas Escuela Universitaria de Enfermería y Fisioterapia San Juan de Dios, Madrid, Spain
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Jorba-García A, Bara-Casaus JJ, Camps-Font O, Sánchez-Garcés MÁ, Figueiredo R, Valmaseda-Castellón E. Accuracy of dental implant placement with or without the use of a dynamic navigation assisted system: A randomized clinical trial. Clin Oral Implants Res 2023; 34:438-449. [PMID: 36794798 DOI: 10.1111/clr.14050] [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: 11/27/2022] [Revised: 01/29/2023] [Accepted: 01/30/2023] [Indexed: 02/17/2023]
Abstract
OBJECTIVES To assess dental implant placement accuracy with a dynamic computer-assisted implant surgery (dCAIS) system and a freehand approach. Secondarily, to compare the patients' perception and quality of life (QoL) with the two approaches. METHODS A double-arm randomized clinical trial was conducted. Consecutive partially edentulous patients were randomly allocated to the dCAIS or standard freehand approach groups. Implant placement accuracy was evaluated by overlapping the preoperative and postoperative Cone Beam Computer Tomographs (CBCT) and recording linear deviations at the implant apex and platform (in mm) and angular deviations (in degrees). Questionnaires recorded self-reported satisfaction, pain and QoL during surgery and postoperatively. RESULTS Thirty patients (22 implants) were enrolled in each group. One patient was lost to follow-up. A significant difference (p < .001) in mean angular deviation was found between the dCAIS (4.02°; 95% CI: 2.85 to 5.19) and the FH (7.97°; 95% CI: 5.36 to 10.58) groups. Linear deviations were significantly lower in the dCAIS group, except for the apex vertical deviation, where no differences were found. Although dCAIS took 14 min longer (95% CI: 6.43 to 21.24; p < .001), patients in both groups considered the surgical time acceptable. Postoperative pain and analgesic consumption during the first postoperative week were similar between groups and self-reported satisfaction was very high. CONCLUSION dCAIS systems significantly increase the accuracy of implant placement in partially edentulous patients in comparison with the conventional freehand approach. However, they increase the surgical time significantly and do not seem to improve patient satisfaction or reduce postoperative pain.
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Affiliation(s)
- Adrià Jorba-García
- Master of Oral Surgery and Implantology, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
| | | | - Octavi Camps-Font
- Oral Surgery, Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain.,IDIBELL Institute (Bellvitge Biomedical Research Institute), Barcelona, Spain
| | - Maria Ángeles Sánchez-Garcés
- Oral Surgery, Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain.,IDIBELL Institute (Bellvitge Biomedical Research Institute), Barcelona, Spain
| | - Rui Figueiredo
- Oral Surgery, Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain.,IDIBELL Institute (Bellvitge Biomedical Research Institute), Barcelona, Spain
| | - Eduard Valmaseda-Castellón
- Oral Surgery, Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain.,IDIBELL Institute (Bellvitge Biomedical Research Institute), Barcelona, Spain
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Dioguardi M, Spirito F, Quarta C, Sovereto D, Basile E, Ballini A, Caloro GA, Troiano G, Lo Muzio L, Mastrangelo F. Guided Dental Implant Surgery: Systematic Review. J Clin Med 2023; 12:jcm12041490. [PMID: 36836025 PMCID: PMC9967359 DOI: 10.3390/jcm12041490] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [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: 11/20/2022] [Revised: 01/05/2023] [Accepted: 02/11/2023] [Indexed: 02/15/2023] Open
Abstract
Among the common procedures in clinical practice in the field of dentistry is prosthetic rehabilitation through the insertion of dental implants. In order to obtain the best aesthetic and functional results, the oral surgeon who deals with implantology must be able to position the dental implants correctly; a crucial role is therefore played by the diagnostic and treatment planning phases, where attention must be paid to anatomical constraints and prosthetic constraints in the alveolar bone site. The parameters, such as bone quality, bone volume, and anatomical restrictions, can be processed and simulated using implant planning software. The simulation of the virtual positioning of the implant can lead to the construction of a three-dimensional model of the implant positioning guide, which can be used during the implant surgery. The aim of this systematic review is to evaluate survival rates, early and late failure rates, peri-implant bone remodeling, and possible implant-prosthetic complications related to implants placed using digitally designed surgical guides. This systematic review was written following the indications of PRISMA and envisaged the use of 3 databases: Scopus, PubMed, and Cochrane Library. Results: Only 9 of the 2001 records were included, including 2 retrospective studies and 7 prospective studies. Conclusion: On the basis of the studies selected in this review, it can be seen that the implant survival obtained with the use of guided implant surgery shows high percentages. Many recorded failures occurred early, due to a lack of osseointegration, and the variables that come into play in the survival of the implants are many.
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Affiliation(s)
- Mario Dioguardi
- Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy
- Correspondence: (M.D.); (A.B.)
| | - Francesca Spirito
- Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy
| | - Cristian Quarta
- Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy
| | - Diego Sovereto
- Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy
| | - Elisabetta Basile
- Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy
| | - Andrea Ballini
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
- Correspondence: (M.D.); (A.B.)
| | - Giorgia Apollonia Caloro
- Unità Operativa Nefrologia e Dialisi, Presidio Ospedaliero Scorrano, ASL (Azienda Sanitaria Locale) Lecce, Via Giuseppina Delli Ponti, 73020 Scorrano, Italy
| | - Giuseppe Troiano
- Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy
| | - Lorenzo Lo Muzio
- Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy
| | - Filiberto Mastrangelo
- Department of Clinical and Experimental Medicine, University of Foggia, Via Rovelli 50, 71122 Foggia, Italy
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Izuta M, Kuwamoto S, Kamiya T, Nagata K, Matsushita M, Inaga S, Kaido T, Umekita Y, Hayashi K, Kitamura Y. Imaging of Liver Tissues Using a Combination of Silver Impregnation and Low-Vacuum Scanning Electron Microscopy; A Simple Method for the High-Resolution Visualization of Reticulin Structures with Applicability to a Quantitative Analysis. Yonago Acta Med 2023; 66:78-86. [PMID: 36820283 PMCID: PMC9937975 DOI: 10.33160/yam.2023.02.009] [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: 10/03/2022] [Accepted: 12/21/2022] [Indexed: 02/07/2023]
Abstract
Background Low-vacuum scanning electron microscopy (LVSEM) enables the detailed three-dimensional imaging of archival tissues without special pretreatments. The clinical utility of LVSEM in the assessment of liver diseases has not yet been defined. So, we investigated the utility of LVSEM imaging in morphological assessments of normal and diseased liver tissues, with a focus on reticulin structures. Methods Formalin-fixed tissue samples of two normal livers and two hepatocellular carcinomas with background regenerative nodules/areas were stained with platinum blue stain or silver-impregnated using Watanabe's method and then comparatively observed under LVSEM. We also evaluated the applicability of LVSEM imaging of liver tissues to a quantitative analysis using a digital image analysis technique. Results Optimal high-resolution images of reticulin structures were obtained using 10-μm-thick silver-impregnated sections. Reticulin fibers were clearly observed to run dendritically around sinusoids in normal livers, and markedly increased in regenerative nodules/areas. Normal reticulin frameworks were lost in hepatocellular carcinoma, leaving a few fragments of reticulin fibers within tumors. Moreover, when a quantitative analysis was applied to these images, we successfully demonstrated a significantly higher reticulin fiber density in regenerative nodules/areas than in the normal liver (P < 0.05). Conclusion We not only obtained detailed three-dimensional images of reticulin structures in various liver tissues by LVSEM combined with silver impregnation but also showed their applicability to a quantitative analysis. The method presented herein may be applied to future studies for the more accurate diagnosis and better classification/risk stratification of various liver diseases.
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Affiliation(s)
- Mikihiro Izuta
- Department of Pathobiological Science and Technology, School
of Health Science, Faculty of Medicine, Tottori University, Yonago 683-8503 Japan
| | - Satoshi Kuwamoto
- Department of Pathology, School of Medicine, Faculty of
Medicine, Tottori University, Yonago 683-8503 Japan
| | - Tetsutaro Kamiya
- Department of Pathobiological Science and Technology, School
of Health Science, Faculty of Medicine, Tottori University, Yonago 683-8503 Japan
| | - Keiko Nagata
- Division of Pharmacology, Department of Pathophysiological
and Therapeutic Sciences, School of Medicine, Faculty of Medicine, Tottori University,
Yonago 683-8503 Japan
| | - Michiko Matsushita
- Department of Pathobiological Science and Technology, School
of Health Science, Faculty of Medicine, Tottori University, Yonago 683-8503 Japan
| | - Sumire Inaga
- Department of Anatomy, School of Medicine, Faculty of
Medicine, Tottori University, Yonago 683-0853, Japan
| | - Toshiyuki Kaido
- Department of Anatomy, School of Medicine, Faculty of
Medicine, Tottori University, Yonago 683-0853, Japan
| | - Yoshihisa Umekita
- Department of Pathology, School of Medicine, Faculty of
Medicine, Tottori University, Yonago 683-8503 Japan
| | - Kazuhiko Hayashi
- Department of Pathology, School of Medicine, Faculty of
Medicine, Tottori University, Yonago 683-8503 Japan
| | - Yukisato Kitamura
- Department of Pathobiological Science and Technology, School
of Health Science, Faculty of Medicine, Tottori University, Yonago 683-8503 Japan
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Raabe C, Dulla FA, Yilmaz B, Chappuis V, Abou-Ayash S. Influence of drilling sequence and guide-hole design on the accuracy of static computer-assisted implant surgery in extraction sockets and healed sites-An in vitro investigation. Clin Oral Implants Res 2023; 34:320-329. [PMID: 36727584 DOI: 10.1111/clr.14042] [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: 10/07/2022] [Revised: 01/10/2023] [Accepted: 01/14/2023] [Indexed: 02/03/2023]
Abstract
OBJECTIVES To evaluate the effect of drilling sequence, guide-hole design, and alveolar ridge morphology on the accuracy of implant placement via static computer-assisted implant surgery (sCAIS). MATERIALS AND METHODS Standardized maxillary bone models including single-tooth gaps with fresh extraction sockets or healed alveolar ridge morphologies were evaluated in this study. Implants were placed using different drilling sequences (i.e., complete [CDS] or minimum [MDS]), and guide-hole designs (i.e., manufacturer's sleeve [MS] or sleeveless [SL] guide-hole designs). The time for implant placement via sCAIS procedures was also recorded. The angular, crestal, and apical three-dimensional deviations between planned and final implant positions were digitally obtained. Statistical analyses were conducted by a non-parametric three-way ANOVA (α = .05). RESULTS Based on a sample size analysis, a total of 72 implants were included in this study. Significantly higher implant position accuracy was found at healed sites compared to extraction sockets and in SL compared to MS guide-hole design in angular, crestal, and apical 3D deviations (p ≤ .048). A tendency for higher accuracy was observed for the CDS compared to the MDS, although the effect was not statistically significant (p = .09). The MDS required significantly shorter preparation times compared with CDS (p < .0001). CONCLUSION Implant placement via sCAIS resulted in higher accuracy in healed sites than extraction sockets, when using SL compared to MS guides, and tended to be more accurate when using CDS compared to MDS. Therefore, even though surgery time was shorter with MDS, its use should be limited to strictly selected cases.
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Affiliation(s)
- Clemens Raabe
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Fabrice Alain Dulla
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Burak Yilmaz
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland.,Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland.,Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, Ohio, USA
| | - Vivianne Chappuis
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Samir Abou-Ayash
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
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Fervers P, Zaeske C, Rauen P, Iuga AI, Kottlors J, Persigehl T, Sonnabend K, Weiss K, Bratke G. Conventional and Deep-Learning-Based Image Reconstructions of Undersampled K-Space Data of the Lumbar Spine Using Compressed Sensing in MRI: A Comparative Study on 20 Subjects. Diagnostics (Basel) 2023; 13:diagnostics13030418. [PMID: 36766523 PMCID: PMC9914543 DOI: 10.3390/diagnostics13030418] [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: 12/08/2022] [Revised: 01/20/2023] [Accepted: 01/21/2023] [Indexed: 01/25/2023] Open
Abstract
Compressed sensing accelerates magnetic resonance imaging (MRI) acquisition by undersampling of the k-space. Yet, excessive undersampling impairs image quality when using conventional reconstruction techniques. Deep-learning-based reconstruction methods might allow for stronger undersampling and thus faster MRI scans without loss of crucial image quality. We compared imaging approaches using parallel imaging (SENSE), a combination of parallel imaging and compressed sensing (COMPRESSED SENSE, CS), and a combination of CS and a deep-learning-based reconstruction (CS AI) on raw k-space data acquired at different undersampling factors. 3D T2-weighted images of the lumbar spine were obtained from 20 volunteers, including a 3D sequence (standard SENSE), as provided by the manufacturer, as well as accelerated 3D sequences (undersampling factors 4.5, 8, and 11) reconstructed with CS and CS AI. Subjective rating was performed using a 5-point Likert scale to evaluate anatomical structures and overall image impression. Objective rating was performed using apparent signal-to-noise and contrast-to-noise ratio (aSNR and aCNR) as well as root mean square error (RMSE) and structural-similarity index (SSIM). The CS AI 4.5 sequence was subjectively rated better than the standard in several categories and deep-learning-based reconstructions were subjectively rated better than conventional reconstructions in several categories for acceleration factors 8 and 11. In the objective rating, only aSNR of the bone showed a significant tendency towards better results of the deep-learning-based reconstructions. We conclude that CS in combination with deep-learning-based image reconstruction allows for stronger undersampling of k-space data without loss of image quality, and thus has potential for further scan time reduction.
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Affiliation(s)
- Philipp Fervers
- Institute for Diagnostic and Interventional Radiology, Faculty of Medicine and University Hospital Cologne, 50937 Cologne, Germany
- Correspondence:
| | - Charlotte Zaeske
- Institute for Diagnostic and Interventional Radiology, Faculty of Medicine and University Hospital Cologne, 50937 Cologne, Germany
| | - Philip Rauen
- Institute for Diagnostic and Interventional Radiology, Faculty of Medicine and University Hospital Cologne, 50937 Cologne, Germany
| | - Andra-Iza Iuga
- Institute for Diagnostic and Interventional Radiology, Faculty of Medicine and University Hospital Cologne, 50937 Cologne, Germany
| | - Jonathan Kottlors
- Institute for Diagnostic and Interventional Radiology, Faculty of Medicine and University Hospital Cologne, 50937 Cologne, Germany
| | - Thorsten Persigehl
- Institute for Diagnostic and Interventional Radiology, Faculty of Medicine and University Hospital Cologne, 50937 Cologne, Germany
| | | | - Kilian Weiss
- Philips GmbH Market DACH, 22335 Hamburg, Germany
| | - Grischa Bratke
- Institute for Diagnostic and Interventional Radiology, Faculty of Medicine and University Hospital Cologne, 50937 Cologne, Germany
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Amruthalingam L, Mang N, Gottfrois P, Gonzalez Jimenez A, Maul JT, Kunz M, Pouly M, Navarini AA. Objective hand eczema severity assessment with automated lesion anatomical stratification. Exp Dermatol 2023; 32:521-528. [PMID: 36627238 DOI: 10.1111/exd.14744] [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: 06/05/2022] [Revised: 12/23/2022] [Accepted: 01/07/2023] [Indexed: 01/12/2023]
Abstract
Hand eczema (HE) is one of the most frequent dermatoses, known to be both relapsing and remitting. Regular and precise evaluation of the disease severity is key for treatment management. Current scoring systems such as the hand eczema severity index (HECSI) suffer from intra- and inter-observer variance. We propose an automated system based on deep learning models (DLM) to quantify HE lesions' surface and determine their anatomical stratification. In this retrospective study, a team of 11 experienced dermatologists annotated eczema lesions in 312 HE pictures, and a medical student created anatomical maps of 215 hands pictures based on 37 anatomical subregions. Each data set was split into training and test pictures and used to train and evaluate two DLMs, one for anatomical mapping, the other for HE lesions segmentation. On the respective test sets, the anatomy DLM achieved average precision and sensitivity of 83% (95% confidence interval [CI] 80-85) and 85% (CI 82-88), while the HE DLM achieved precision and sensitivity of 75% (CI 64-82) and 69% (CI 55-81). The intraclass correlation of the predicted HE surface with dermatologists' estimated surface was 0.94 (CI 0.90-0.96). The proposed method automatically predicts the anatomical stratification of HE lesions' surface and can serve as support to evaluate hand eczema severity, improving reliability, precision and efficiency over manual assessment. Furthermore, the anatomical DLM is not limited to HE and can be applied to any other skin disease occurring on the hands such as lentigo or psoriasis.
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Affiliation(s)
- Ludovic Amruthalingam
- Department of Biomedical Engineering, University of Basel, Basel, Switzerland.,Lucerne School of Computer Science and Information Technology, Lucerne University of Applied Sciences and Arts, Lucerne, Switzerland
| | - Nora Mang
- Department of Dermatology, University Hospital of Basel, Basel, Switzerland
| | - Philippe Gottfrois
- Department of Biomedical Engineering, University of Basel, Basel, Switzerland
| | | | - Julia-Tatjana Maul
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland.,Faculty of Medicine, University of Zürich, Zurich, Switzerland
| | - Michael Kunz
- Department of Dermatology, University Hospital of Basel, Basel, Switzerland
| | - Marc Pouly
- Lucerne School of Computer Science and Information Technology, Lucerne University of Applied Sciences and Arts, Lucerne, Switzerland
| | - Alexander A Navarini
- Department of Biomedical Engineering, University of Basel, Basel, Switzerland.,Department of Dermatology, University Hospital of Basel, Basel, Switzerland
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Herklotz I, Beuer F, Bruhnke M, Zoske J, Böse MWH. Accuracy of fully guided dental implant placement: A prospective clinical in-vivo investigation using intraoral scan data. Int J Comput Dent 2023; 26:137-148. [PMID: 36607263 DOI: 10.3290/j.ijcd.b3762753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
AIM To compare the planned implant position (PIP) to the transferred implant position (TIP) after fully guided implant placements in single-tooth gaps. MATERIALS AND METHODS Dental implant placements were planned using different implant systems (Camlog Screw Line [C-SL], Straumann Bone Level Tapered [S-BLT]) and planning software (SMOP and coDiagnostiX). All implants were placed according to full-guided protocols and intraoral scans were performed intraoperatively. For comparison of PIP and TIP scan data were imported to a software (Geomagic Control X [GCX]) and accuracies were evaluated. Deviations were reported in a coordinate system (x-, y- and z-axis) at entry points and apices. Total deviations including the angular deviations were calculated with GCX. For statistical analysis, level of significance was set to p < 0.05. RESULTS Twenty-six patients received twenty-six implants. Mean three-dimensional (3D) deviation at implant's entry point was 0.61mm ± 0.28 for C-SL and 0.63mm ± 0.24 for S-BLT. For implant's apex, mean 3D deviation of 0.96mm ± 0.41 was documented for C-SL and 1.04mm ± 0.34 for S-BLT. Mean angular deviation was 2.58° ± 1.40 for C-SL and 2.89° ± 1.12 for S-BLT. Statistical analysis revealed no significant differences between implant systems, but significant deviations regarding z-axis, both at entry point and apex (p < 0.05). CONCLUSION Fully guided implant placements in single-tooth gaps provide accurate results. Due to significant vertical deviations, reevaluation of both drilling and insertion depths prior to implant installation should be considered. Maintenance of 1.5mm safety distances to critical structures was confirmed.
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Moshel S, Klang S, Nikname R, Bar Shalom K, Albukrek D, Zacay G. Automated versus manual prior authorization for diabetes mellitus drugs: A retrospective study from Israel. Digit Health 2023; 9:20552076231203889. [PMID: 37780061 PMCID: PMC10540583 DOI: 10.1177/20552076231203889] [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: 02/16/2023] [Accepted: 09/08/2023] [Indexed: 10/03/2023] Open
Abstract
Introduction Drug prior authorization (PA) imposes a bureaucratic and economic burden on healthcare service providers and payers. A novel automated PA system may improve these drawbacks. Methods An historical cohort study from a large health maintenance organization in Israel, comparing manual versus automated PA mechanisms for diabetes mellitus (DM) drugs: sodium-glucose co-transporter-2 inhibitors (SGLT2i) and glucagon-like peptide-1 analogs (GLP1-A). We compared patients with DM, whose first drug applications were approved using the automated system, with similar patients whose first drug applications were approved by manual PA. The primary endpoint was the time elapsed from application approval to prescription filling (accessibility time). Secondary endpoints included the prescription filling rate at 7 and 30 days. Results In total, 1371 automated approved prescriptions and 1240 manually approved prescriptions were included in the analysis. Median accessibility time was one day (interquartile range (IQR) 0-5) with automated PA for both GLP1-A and SGLT2i, compared with four days (IQR 1-9) and three days (IQR 1-8), respectively, with the manual PA (p < 0.001). Eighty-four percent of GLP1-A automated PA approvals were filled within seven days compared with 70% with manual PA (p < 0.001). Similar results were seen with SGLT2i (80% vs. 72%, p < 0.008). No differences were observed at 30 days post-approval. Using logistic regression, odds for GLP1-A and SGLT2i prescription filling within seven days were 2.36 and 1.53 folds higher (respectively) with automated PA (p < 0.01). Conclusions Automated PA system improved access time to SGLT2i/GLP1-A seven days post-approval compared to manual PA.
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Affiliation(s)
- Shai Moshel
- Meuhedet Health Services, Tel Aviv, Israel
- Department of Health System Management, Peres Academic Center, Rehovot, Israel
| | - Shmeul Klang
- School of Public Health, University of Haifa, Haifa, Israel
| | | | | | | | - Galia Zacay
- Meuhedet Health Services, Tel Aviv, Israel
- Department of Family Medicine, Faculty of Medicine, University of Tel Aviv, Tel Aviv, Israel
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Mu Y, Liu D, Xie H, Zhang X, Han X, Lv Z. Screening and Mechanism of Novel Angiotensin-I-Converting Enzyme Inhibitory Peptides in X. sorbifolia Seed Meal: A Computer-Assisted Experimental Study Method. Molecules 2022; 27. [PMID: 36557925 DOI: 10.3390/molecules27248792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/04/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022]
Abstract
Angiotensin-I-converting enzyme (ACE) inhibitors are used extensively to control hypertension. In this study, a computer-assisted experimental approach was used to screen ACE-inhibiting peptides from X. sorbifolum seed meal (XSM). The process conditions for XSM hydrolysis were optimized through the orthogonal experimental method combined with a database. The optimal conditions for ACE inhibition included an alkaline protease dose of 5%, 45 °C, 15 min and pH 9.5. The hydrolysate was analyzed by LC-MS/MS, and 10 optimal peptides were screened. Molecular docking results revealed four peptides (GGLPGFDPA, IMAVLAIVL, ETYFIVR, and INPILLPK) with ACE inhibitory potential. At 0.1 mg/mL, the synthetic peptides GGLPGFDPA, ETYFIVR, and INPILLPK provided ACE inhibition rates of 24.89%, 67.02%, and 4.19%, respectively. GGLPGFDPA and ETYFIVR maintained high inhibitory activities during in vitro digestions. Therefore, the XSM protein may be a suitable material for preparing ACE inhibitory peptides, and computer-assisted experimental screening is an effective, accurate and promising method for discovering new active peptides.
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La Monaca G, Pranno N, Annibali S, Di Carlo S, Pompa G, Cristalli MP. Immediate flapless full-arch rehabilitation of edentulous jaws on 4 or 6 implants according to the prosthetic-driven planning and guided implant surgery: A retrospective study on clinical and radiographic outcomes up to 10 years of follow-up. Clin Implant Dent Relat Res 2022; 24:831-844. [PMID: 36197040 PMCID: PMC10092257 DOI: 10.1111/cid.13134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVES to retrospectively evaluate clinical and radiographic outcomes of immediate, flapless full-arch prostheses, supported by 4/6 implants according to prosthetic-driven planning and guided surgery. MATERIALS AND METHODS The study involved 28 edentulous patients (20 female/8 males; average age 67.75 ± 8.627 years), 32 prostheses (17 all-on-4/15 all-on-6) and 164 implants. The Implants survival, prostheses success/survival, peri-implant marginal bone loss, incidence of biological and prosthetic complications were evaluated. Multiple linear regression analysis was performed to analyze the influence of implant and patient characteristics on marginal bone loss. RESULTS Cumulative implant survival rate was 89.7% for all-on-four (seven failures) and 99.0% for all-on-six (one failure) after a mean follow-up of 6.46 ± 2.236 years (range 1-10 years). Cumulative prosthesis success rate was 51.5% (58.8% for all-on-four/ 43.8% for all-on-six). Prosthesis survival rate was 88.2% for all-on-four. No failure was registered in all-on-six. Mean value of marginal bone loss was 1.38 ± 0.1.28 mm at 5-year and 2.09 ± 0.56 mm at 10-year follow-up. No difference was found in the mean value of marginal bone resorption between all-on-four (1.56 ± 1.61 mm) and all-on-six (1.20 ± 0.85 mm) (p = 0.104) and between tilted (1.22 ± 1.29 mm) and axial implants (1.44 ± 1.27 mm) (p = 0.385) after 5-year follow-up. The incidence of biological complications was 1.0% in all-on-six (one mucositis) and 10.3% in all-on-four (two peri-implantitis). Prosthetic complications affected teeth of final rehabilitations with 3 detachments, 10 chippings or fractures, and 3 severe occlusal wears. CONCLUSIONS Based on the results and within the limitations of the present study, the implant-supported hybrid prosthesis according to prosthetic-driven planning and guided surgery showed to be an efficient, safe, and effective approach to rehabilitate edentulous jaws.
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Affiliation(s)
- Gerardo La Monaca
- Department of Oral and Maxillofacial Sciences, Sapienza, University of Rome, Rome, Italy
| | - Nicola Pranno
- Department of Oral and Maxillofacial Sciences, Sapienza, University of Rome, Rome, Italy
| | - Susanna Annibali
- Department of Oral and Maxillofacial Sciences, Sapienza, University of Rome, Rome, Italy
| | - Stefano Di Carlo
- Department of Oral and Maxillofacial Sciences, Sapienza, University of Rome, Rome, Italy
| | - Giorgio Pompa
- Department of Oral and Maxillofacial Sciences, Sapienza, University of Rome, Rome, Italy
| | - Maria Paola Cristalli
- Department of Biotechnologies and Medical Surgical Sciences, Sapienza, University of Rome, Rome, Italy
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Eroğlu Y, Baykara M, Perçinel Yazici İ, Utku Yazici K, Kürşad Poyraz A. Evaluation of the corpus callosum using magnetic resonance imaging histogram analysis in autism spectrum disorder. Neuroradiol J 2022; 35:751-757. [PMID: 35523430 PMCID: PMC9626850 DOI: 10.1177/19714009221097507] [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] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Histogram analysis is a texture analysis method that can be used in medical images. Quantitative values of the intensity of images can be obtained with histogram analysis. It aimed to evaluate corpus callosum in magnetic resonance images (MRIs) using histogram analysis of pediatric patients with autism spectrum disorder (ASD) to compare them with healthy controls. METHODS This study included 29 children with ASD and 29 healthy children with normal brain MRI. High-resolution three-dimensional turbo field echo images were obtained with a 1.5 T scanner device for brain magnetic resonance imaging. On the corpus callosum in the sagittal T1-weighted images obtained, mean gray level density (mean), the standard deviation, median, minimum, maximum, entropy, variance, skewness, kurtosis, uniformity, size % L, size % M, size % U, and percentile parameters were measured. RESULTS In ASD patients, mean, standard deviation, maximum, median, variance, entropy, 25%, 75%, 90%, 97%, and 99% values were found to be lower than the control group, and size % U value was higher. In addition, the corpus callosum area was significantly lower in the ASD compared to the controls. CONCLUSION According to our study, corpus callosum of patients with ASD showed differences compared to healthy controls by histogram analysis, even though they were seen as normal in brain MRI. We think that histogram analysis can be used to evaluate possibly affected areas of brain in ASD patients.
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Affiliation(s)
- Yeşim Eroğlu
- Faculty of Medicine, Department of
Radiology, Firat University, Elazig, Turkey
| | - Murat Baykara
- Faculty of Medicine, Department of
Radiology, Firat University, Elazig, Turkey
| | - İpek Perçinel Yazici
- Faculty of Medicine, Department of
Child and Adolescent Psychiatry, Firat University, Elazig, Turkey
| | - Kemal Utku Yazici
- Faculty of Medicine, Department of
Child and Adolescent Psychiatry, Firat University, Elazig, Turkey
| | - Ahmet Kürşad Poyraz
- Faculty of Medicine, Department of
Radiology, Firat University, Elazig, Turkey
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47
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Xu Z, Eichler B, Klausner EA, Duffy-Matzner J, Zheng W. Lead/Drug Discovery from Natural Resources. Molecules 2022; 27:molecules27238280. [PMID: 36500375 PMCID: PMC9736696 DOI: 10.3390/molecules27238280] [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] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/18/2022] [Accepted: 11/18/2022] [Indexed: 11/29/2022] Open
Abstract
Natural products and their derivatives have been shown to be effective drug candidates against various diseases for many years. Over a long period of time, nature has produced an abundant and prosperous source pool for novel therapeutic agents with distinctive structures. Major natural-product-based drugs approved for clinical use include anti-infectives and anticancer agents. This paper will review some natural-product-related potent anticancer, anti-HIV, antibacterial and antimalarial drugs or lead compounds mainly discovered from 2016 to 2022. Structurally typical marine bioactive products are also included. Molecular modeling, machine learning, bioinformatics and other computer-assisted techniques that are very important in narrowing down bioactive core structural scaffolds and helping to design new structures to fight against key disease-associated molecular targets based on available natural products are considered and briefly reviewed.
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Affiliation(s)
- Zhihong Xu
- Department of Chemistry and Biochemistry, Augustana University, 2001 S Summit Ave., Sioux Falls, SD 57197, USA
- Institute of Interventional & Vascular Surgery, Tongji University, Shanghai 200072, China
- Department of Pharmaceutical Sciences, South College School of Pharmacy, 400 Goody’s Lane, Knoxville, TN 37922, USA
- Correspondence: ; Tel.: +1-(605)-274-5008
| | - Barrett Eichler
- Department of Chemistry and Biochemistry, Augustana University, 2001 S Summit Ave., Sioux Falls, SD 57197, USA
| | - Eytan A. Klausner
- Department of Pharmaceutical Sciences, South College School of Pharmacy, 400 Goody’s Lane, Knoxville, TN 37922, USA
| | - Jetty Duffy-Matzner
- Department of Chemistry and Biochemistry, Augustana University, 2001 S Summit Ave., Sioux Falls, SD 57197, USA
| | - Weifan Zheng
- Biomanufacturing Research Institute and Technology Enterprise, North Carolina Central University, 1801 Fayetteville St., Durham, NC 27707, USA
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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Dorin RI, Urban FK, Perogamvros I, Qualls CR. Four-Compartment Diffusion Model of Cortisol Disposition: Comparison With 3 Alternative Models in Current Clinical Use. J Endocr Soc 2022; 7:bvac173. [PMID: 36628386 PMCID: PMC9815201 DOI: 10.1210/jendso/bvac173] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Indexed: 11/16/2022] Open
Abstract
Context Estimated rates of cortisol elimination and appearance vary according to the model used to obtain them. Generalizability of current models of cortisol disposition in healthy humans is limited. Objective Development and validation of a realistic, mechanistic model of cortisol disposition that accounts for the major factors influencing plasma cortisol concentrations in vivo (Model 4), and comparison to previously described models of cortisol disposition in current clinical use (Models 1-3). Methods The 4 models were independently applied to cortisol concentration data obtained for the hydrocortisone bolus experiment (20 mg) in 2 clinical groups: healthy volunteers (HVs, n = 6) and corticosteroid binding globulin (CBG)-deficient (n = 2). Model 4 used Fick's first law of diffusion to model free cortisol flux between vascular and extravascular compartments. Pharmacokinetic parameter solutions for Models 1-4 were optimized by numerical methods, and model-specific parameter solutions were compared by repeated measures analysis of variance. Models and respective parameter solutions were compared by mathematical and simulation analyses, and an assessment tool was used to compare performance characteristics of the four models evaluated herein. Results Cortisol half-lives differed significantly between models (all P < .001) with significant model-group interaction (P = .02). In comparative analysis, Model 4 solutions yielded significantly reduced free cortisol half-life, improved fit to experimental data (both P < .01), and superior model performance. Conclusion The proposed 4-compartment diffusion model (Model 4) is consistent with relevant experimental observations and met the greatest number of empiric validation criteria. Cortisol half-life solutions obtained using Model 4 were generalizable between HV and CBG-deficient groups and bolus and continuous modes of hydrocortisone infusion.
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Affiliation(s)
- Richard I Dorin
- Correspondence: Richard Dorin, MD, New Mexico VA Healthcare System, 1501 San
Pedro Drive, SE, Albuquerque, NM 87108.
| | - Frank K Urban
- Department of Electrical and Computer Engineering, Florida International
University, Miami, FL 33199, USA
| | - Ilias Perogamvros
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical
Sciences, University of Manchester, Manchester M13
9PL, UK
| | - Clifford R Qualls
- Department of Mathematics and Statistics, University of New
Mexico, Albuquerque, NM 87131, USA,Department of Research, New Mexico Veterans Affairs Healthcare
System, Albuquerque, NM 87108, USA
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Barat M, Marchese U, Pellat A, Dohan A, Coriat R, Hoeffel C, Fishman EK, Cassinotto C, Chu L, Soyer P. Imaging of Pancreatic Ductal Adenocarcinoma: An Update on Recent Advances. Can Assoc Radiol J 2022; 74:351-361. [PMID: 36065572 DOI: 10.1177/08465371221124927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 12/26/2022] Open
Abstract
Pancreatic ductal carcinoma (PDAC) is one of the leading causes of cancer-related death worldwide. Computed tomography (CT) remains the primary imaging modality for diagnosis of PDAC. However, CT has limitations for early pancreatic tumor detection and tumor characterization so that it is currently challenged by magnetic resonance imaging. More recently, a particular attention has been given to radiomics for the characterization of pancreatic lesions using extraction and analysis of quantitative imaging features. In addition, radiomics has currently many applications that are developed in conjunction with artificial intelligence (AI) with the aim of better characterizing pancreatic lesions and providing a more precise assessment of tumor burden. This review article sums up recent advances in imaging of PDAC in the field of image/data acquisition, tumor detection, tumor characterization, treatment response evaluation, and preoperative planning. In addition, current applications of radiomics and AI in the field of PDAC are discussed.
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Affiliation(s)
- Maxime Barat
- Department of Radiology, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris543341, Paris, France.,Université Paris Cité, Faculté de Médecine, 555089Paris, France
| | - Ugo Marchese
- Université Paris Cité, Faculté de Médecine, 555089Paris, France.,Department of Digestive, Hepatobiliary and Pancreatic Surgery, 26935Hopital Cochin, AP-HP, Paris, France
| | - Anna Pellat
- Université Paris Cité, Faculté de Médecine, 555089Paris, France.,Department of Gastroenterology, 26935Hopital Cochin, AP-HP, Paris, France
| | - Anthony Dohan
- Department of Radiology, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris543341, Paris, France.,Université Paris Cité, Faculté de Médecine, 555089Paris, France
| | - Romain Coriat
- Université Paris Cité, Faculté de Médecine, 555089Paris, France.,Department of Gastroenterology, 26935Hopital Cochin, AP-HP, Paris, France
| | | | - Elliot K Fishman
- The Russell H. Morgan Department of Radiology and Radiological Science, School of Medicine, 1466Johns Hopkins University, Baltimore, MD, USA
| | - Christophe Cassinotto
- Department of Radiology, CHU Montpellier, 27037University of Montpellier, Saint-Éloi Hospital, Montpellier, France
| | - Linda Chu
- The Russell H. Morgan Department of Radiology and Radiological Science, School of Medicine, 1466Johns Hopkins University, Baltimore, MD, USA
| | - Philippe Soyer
- Department of Radiology, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris543341, Paris, France.,Université Paris Cité, Faculté de Médecine, 555089Paris, France
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Wang L, Chen Y, Tan J, Ge Y, Xu Z, Wels M, Pan Z. Efficacy and prognostic value of delta radiomics on dual-energy computed tomography for gastric cancer with neoadjuvant chemotherapy: a preliminary study. Acta Radiol 2022; 64:1311-1321. [PMID: 36062762 DOI: 10.1177/02841851221123971] [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: 12/24/2022]
Abstract
BACKGROUND A non-invasive tool for tumor regression grade (TRG) evaluation is urgently needed for gastric cancer (GC) treated with neoadjuvant chemotherapy (NAC). PURPOSE To develop and validate a radiomics signature (RS) to evaluate TRG for locally advanced GC after NAC and assess its prognostic value. MATERIAL AND METHODS A total of 103 patients with GC treated with NAC were retrospectively recruited from April 2018 to December 2019 and were randomly allocated into a training cohort (n = 69) and a validation cohort (n = 34). Delineation was performed on both mixed and iodine-uptake images based on dual-energy computed tomography (DECT). A total of 4094 radiomics features were extracted from the pre-NAC, post-NAC, and delta feature sets. Spearman correlation and the least absolute shrinkage and selection operator were used for dimensionality reduction. Multivariable logistic regression was used for TRG evaluation and generated the optimal RS. Kaplan-Meier survival analysis with the log-rank test was implemented in an independent cohort of 40 patients to validate the prognostic value of the optimal RS. RESULTS Three, five, and six radiomics features were finally selected for the pre-NAC, post-NAC, and delta feature sets. The delta model demonstrated the best performance in assessing TRG in both the training and the validation cohorts (AUCs=0.91 and 0.76, respectively; P>0.1). The optimal RS from the delta model showed a significant capability to predict survival in the independent cohort (P<0.05). CONCLUSION Delta radiomics based on DECT images serves as a potential biomarker for TRG evaluation and shows prognostic value for patients with GC treated with NAC.
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Affiliation(s)
- Lingyun Wang
- Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
| | - Yong Chen
- Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
| | - Jingwen Tan
- Department of Radiology, Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
| | - Yingqian Ge
- Siemens Healthineers Ltd, Shanghai, PR China
| | - Zhihan Xu
- Siemens Healthineers Ltd, Shanghai, PR China
| | - Michael Wels
- Department of Diagnostic Imaging Computed Tomography Image Analytics, 42406Siemens Healthcare GmbH, Forchheim, Germany
| | - Zilai Pan
- Department of Radiology, Ruijin Hospital North, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
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