scholarly journals Improving radiologists’ and orthopedists’ QoE in diagnosing lumbar disk herniation using 3D modeling

2021 ◽  
Vol 11 (5) ◽  
pp. 4336
Author(s):  
Sanaa Abu Alasal ◽  
Mohammad Alsmirat ◽  
Asma’a Al-Mnayyis ◽  
Qanita Bani baker ◽  
Mahmoud Al-Ayyoub
Keyword(s):  
3D Models ◽  
Intervertebral Disk ◽  
Disk Herniation ◽  
Lumbar Disk Herniation ◽  
Area Of Interest ◽  
Mri Scans ◽  
Diagnosis Accuracy ◽  
Magnetic Resonance Imaging Mri ◽  
Lumbar Intervertebral Disk

<p>This article studies and analyzes the use of 3D models, built from magnetic resonance imaging (MRI) axial scans of the lumbar intervertebral disk, that are needed for the diagnosis of disk herniation. We study the possibility of assisting radiologists and orthopedists and increasing their quality of experience (QoE) during the diagnosis process. The main aim is to build a 3D model for the desired area of interest and ask the specialists to consider the 3D models in the diagnosis process instead of considering multiple axial MRI scans. We further propose an automated framework to diagnose the lumber disk herniation using the constructed 3D models. We evaluate the effectiveness of increasing the specialists QoE by conducting a questionnaire on 14 specialists with different experiences ranging from residents to consultants. We then evaluate the effectiveness of the automated diagnosis framework by training it with a set of 83 cases and then testing it on an unseen test set. The results show that the the use of 3D models increases doctors QoE and the automated framework gets 90% of diagnosis accuracy.</p>

scholarly journals Lumbar disk 3D modeling from limited number of MRI axial slices

2020 ◽  
Vol 10 (4) ◽  
pp. 4101
Author(s):  
Asma’a Al-Mnayyis ◽  
Sanaa Abu Alasal ◽  
Mohammad Alsmirat ◽  
Qanita Bani Baker ◽  
Shadi AlZu’bi
Keyword(s):  
3D Model ◽  
Region Of Interest ◽  
3D Models ◽  
Intervertebral Disk ◽  
Model Construction ◽  
Disk Herniation ◽  
Lumbar Area ◽  
Intervertebral Disk Herniation ◽  
Clinical Mri ◽  
Lumbar Intervertebral Disk

This paper studies the problem of clinical MRI analysis in the field of lumbar intervertebral disk herniation diagnosis. It discusses the possibility of assisting radiologists in reading the patients MRI images by constructing a 3D model for the region of interest using simple computer vision methods. We use axial MRI slices of the lumbar area. The proposed framework works with a very small number of MRI slices and goes through three main stages. Namely, the region of interest extraction and enhancement, inter-slice interpolation, and 3D model construction. We use the Marching Cubes algorithm to construct the 3D model of the the region of interest. The validation of our 3D models is based on a radiologist’s analysis of the models. We tested the proposed 3D model construction on 83 cases and We have a 95% accuracy according to the radiologist evaluation. This study shows that 3D model construction can greatly ease the task of the radiologist which enhances the working experience. This leads eventually to more accurate and easy diagnosis process.

scholarly journals Virtual Prototyping: Computational Device Placements within Detailed Human Heart Models

2019 ◽  
Vol 10 (1) ◽  
pp. 175
Author(s):  
Alex J. Deakyne ◽  
Tinen L. Iles ◽  
Alexander R. Mattson ◽  
Paul A. Iaizzo
Keyword(s):  
Anatomical Study ◽  
3D Models ◽  
Anatomical Models ◽  
Cardiac Tissues ◽  
Patient Demographics ◽  
Wide Range ◽  
Specific Device ◽  
Mri Scans ◽  
3D Printed ◽  
Magnetic Resonance Imaging Mri

Data relative to anatomical measurements, spatial relationships, and device–tissue interaction are invaluable to medical device designers. However, obtaining these datasets from a wide range of anatomical specimens can be difficult and time consuming, forcing designers to make decisions on the requisite shapes and sizes of a device from a restricted number of specimens. The Visible Heart® Laboratories have a unique library of over 500 perfusion-fixed human cardiac specimens from organ donors whose hearts (and or lungs) were not deemed viable for transplantation. These hearts encompass a wide variety of pathologies, patient demographics, surgical repairs, and/or interventional procedures. Further, these specimens are an important resource for anatomical study, and their utility may be augmented via generation of 3D computational anatomical models, i.e., from obtained post-fixation magnetic resonance imaging (MRI) scans. In order to optimize device designs and procedural developments, computer generated models of medical devices and delivery tools can be computationally positioned within any of the generated anatomical models. The resulting co-registered 3D models can be 3D printed and analyzed to better understand relative interfaces between a specific device and cardiac tissues within a large number of diverse cardiac specimens that would be otherwise unattainable.

Inter-Observer Variability of Vaginal Wall Segmentation From MRI: A Statistical Shape Analysis Approach

2015 ◽  
Author(s):  
Deanna C. Easley ◽  
Prahlad G. Menon ◽  
Pamela A. Moalli ◽  
Steven D. Abramowitch
Keyword(s):  
Shape Matching ◽  
Pelvic Floor Disorders ◽  
Pelvic Organ ◽  
Vaginal Wall ◽  
Resonance Imaging ◽  
Inter Observer Variability ◽  
Statistical Shape ◽  
Mri Scans ◽  
Magnetic Resonance Imaging Mri

Pelvic floor disorders such as Pelvic Organ Prolapse (POP) negatively impact the health and quality of life of millions of women worldwide. POP is characterized by the descent of the pelvic organs into the vagina due to compromised connective tissue support, resulting in discomfort and urinary/fecal incontinence. Magnetic Resonance Imaging (MRI) has been used to aid in the quantification of these anatomical changes, however the inter- and intra-observer repeatability necessary to make reliable conclusions about changes in anatomical positioning is questioned using current methods. The aim of this study was to quantify the degree of variability produced from inter-observer manual tracings of the vagina from MRI scans using a statistical shape matching approach.

Chronic intervertebral disk herniation associated with fused vertebrae treated by vertebral lateral corpectomy in a cat

2009 ◽  
Vol 22 (02) ◽  
pp. 170-173 ◽  
Author(s):  
Y. Malik ◽  
M. Konar ◽  
M. Wernick ◽  
J. Howard ◽  
F. Forterre
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Intervertebral Disk ◽  
Resonance Imaging ◽  
Disk Herniation ◽  
Intervertebral Space ◽  
Dorsal Process ◽  
Magnetic Resonance Imaging Mri ◽  
Intervertebral Disk Herniation ◽  
L1 And L2

SummaryA 10-year-old Domestic Shorthair cat was admitted for chronic ambulatory paraparesis and a spinal malformation. The clinical examination revealed paraparesis accentuated on the left side. Thoracolumbar radio-graphs revealed a spinal malformation with a narrowed intervertebral space between L1 and L2, and a dorsal fusion at the level of L2-L3 with a common dorsal process. Magnetic resonance imaging (MRI) revealed an intervertebral disk herniation with a ventral compression of the spinal cord at the level of L1/2. A standard vertebral lateral corpectomy with a foraminotomy was performed with a good outcome.

Cytokine Assay of the Epidural Space Lavage in Patients With Lumbar Intervertebral Disk Herniation and Radiculopathy

2006 ◽  
Vol 19 (4) ◽  
pp. 266-269 ◽  
Author(s):  
Gaetano J. Scuderi ◽  
Georgiy Brusovamik V ◽  
D. Greg Anderson ◽  
Cami J. Dunham ◽  
Alexander R. Vaccaro ◽  
...  
Keyword(s):  
Epidural Space ◽  
Intervertebral Disk ◽  
Disk Herniation ◽  
Intervertebral Disk Herniation ◽  
Lumbar Intervertebral Disk ◽  
Cytokine Assay
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