Comparison of a Fluoroscopic 3-Dimensional Imaging System and Conventional CT in Detection of Pars Fractures in the Cadaveric Lumbar Spine

2012 ◽  
Vol 25 (8) ◽  
pp. 429-432 ◽  
Author(s):  
Christopher K. Kepler ◽  
Helene Pavlov ◽  
Richard J. Herzog ◽  
Bernard A. Rawlins ◽  
Yoshimi Endo ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Imaging System ◽  
3 Dimensional ◽  
Conventional Ct

Comparison of a Fluoroscopic Three-Dimensional Imaging System and Conventional CT in Detection of Pars Fractures in the Cadaveric Lumbar Spine

2010 ◽  
Vol 10 (9) ◽  
pp. S23
Author(s):  
Christopher K. Kepler ◽  
Richard J. Herzog ◽  
Daniel W. Green ◽  
Bernard A. Rawlins ◽  
Yoshimi Endo ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Imaging System ◽  
Three Dimensional ◽  
Three Dimensional Imaging ◽  
Conventional Ct

Charge couple device-based system for 3-dimensional real time positioning on the assessment of segmental range of motion of lumbar spine

2005 ◽  
Vol 11 (4) ◽  
pp. 272-278
Author(s):  
Zhao Ping ◽  
Chen Li-jun ◽  
Guan Jing ◽  
Pan Li ◽  
Ding Hui ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Range Of Motion ◽  
Real Time ◽  
Charge Couple Device ◽  
3 Dimensional

scholarly journals Spastic diparetic does not directly affect the capacity to ascend and descend access ramps: three-dimensional analysis

2017 ◽  
Vol 30 (3) ◽  
pp. 537-547 ◽  
Author(s):  
Tainá Ribas Mélo ◽  
Ana Tereza Bittencourt Guimarães ◽  
Vera Lúcia Israel
Keyword(s):  
Imaging System ◽  
Three Dimensional ◽  
Control Group ◽  
Initial Contact ◽  
Experimental Conditions ◽  
3 Dimensional ◽  
Flexion Extension ◽  
Posterior Trunk ◽  
Hip Flexion ◽  
Study Participants

Abstract Introduction: Diplegic children have difficulties in gait and therefore ramps are used as strategies of accessibility. Objective: The present study investigated the influence of an inclined surface (ascending and descending) on the kinematic characteristics during gait of the diplegic group (DG) when compared to typically developing children of the control group (CG). Methods: Study participants included 20 children (10 with DG and 10 CG) matched by age, which were evaluated in three experimental conditions (horizontal and inclined ascending and inclined descending surfaces of 7º) through an optoelectronic imaging system. Results: Among the linear kinematic variables, only step width differed among groups, however, without influence of the surface. The foot height differed among the groups only in the descending phase, where DG had greater difficulty in raising the foot. The 3-dimensional gait analyses could not provide more evidences of differences in kinematics variables, especially in transverse plane, between DG and CG, but provide some evidence to support that hip range of motion (ROM) during the gait cycle, hip flexion-extension in initial contact, knee ROM and the 2nd anterior-posterior trunk peak amplitude of the DG were influenced on descent by their flexor pattern. Conclusion: The DG was most affected by the inclination plane than CG especially on descent. Although a hip and knee flexor pattern is evident for DG on inclination of 7º, this angle is accessible since it allows independent gait functional activity.

POTENTIAL CLINICAL APPLICATION FOR COMPREHENSIVE EVALUATION OF ADOLESCENT IDIOPATHIC SCOLIOSIS USING SURFACE TOPOGRAPHY

2020 ◽  
Vol 23 (03) ◽  
pp. 2030002
Author(s):  
Jonathan Horng ◽  
Xue-Cheng Liu ◽  
John Thometz ◽  
Channing Tassone ◽  
Benjamin Escott
Keyword(s):  
Lumbar Spine ◽  
Adolescent Idiopathic Scoliosis ◽  
Idiopathic Scoliosis ◽  
Dynamic System ◽  
Surface Topography ◽  
Thoracic Spine ◽  
Screening Tool ◽  
Web Of Science ◽  
Imaging System ◽  
Comprehensive Evaluation

Purpose: Formetric 4D dynamic system (F4D) is a radiation-free imaging system that can be used to detect static and dynamic back contour in children with adolescent idiopathic scoliosis (AIS). The aim of this paper is (1) to compare the F4D to other systems; (2) to review the correlation of spinal measurements taken by F4D with those taken by radiographs as well as the reproducibility of the F4D; (3) to present future clinical uses and suggest potential research studies utilizing F4D. Methods: MEDLINE (PubMed), ScienceDIRECT, SCOPUS, Cochrane, and Web of Science were queried for studies on AIS using surface topography. Papers were evaluated using PRISMA criteria. Results: Correlations between scoliosis angle as measured by F4D and Cobb angle by radiographs are from 0.7 to 0.872 in the thoracic spine and from 0.5 to 0.758 in the lumbar spine. The intraday reliability of F4D measurements by the same observer ranged from 0.65 to 0.996 across two studies. The study that evaluated reproducibility of F4D when segmented by patients with BMI below and above 24.99 kg/m2 found that the reproducibility was 0.990 and 0.995, respectively. There is potential for using F4D as a screening tool for scoliosis using an algorithm with 92% sensitivity and 74% specificity. Conclusions: F4D as a surface topography machine has great potential in screening and monitoring progression of the curvatures of AIS.

Novel 3-Dimensional Motion Analysis Method for Measuring the Lumbar Spine Range of Motion

Spine ◽  
2013 ◽  
Vol 38 (21) ◽  
pp. E1327-E1333 ◽  
Author(s):  
Michio Tojima ◽  
Naoshi Ogata ◽  
Arito Yozu ◽  
Masahiko Sumitani ◽  
Nobuhiko Haga
Keyword(s):  
Lumbar Spine ◽  
Range Of Motion ◽  
Motion Analysis ◽  
Analysis Method ◽  
3 Dimensional

Thrust Magnitudes, Rates, and 3-Dimensional Directions Delivered in Simulated Lumbar Spine High-Velocity, Low-Amplitude Manipulation

2017 ◽  
Vol 40 (6) ◽  
pp. 411-419 ◽  
Author(s):  
Edward F. Owens ◽  
Ronald S. Hosek ◽  
Linda Mullin ◽  
Lydia Dever ◽  
Stephanie G.B. Sullivan ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
High Velocity ◽  
3 Dimensional ◽  
Low Amplitude

scholarly journals Robotic Assay for Drought (RoAD): An Automated Phenotyping System for Brassinosteroid and Drought Response

2020 ◽  
Author(s):  
Lirong Xiang ◽  
Trevor M. Nolan ◽  
Yin Bao ◽  
Mitch Elmore ◽  
Taylor Tuel ◽  
...  
Keyword(s):  
Stress Responses ◽  
Imaging System ◽  
Leaf Length ◽  
Machine Learning Algorithms ◽  
Phenotypic Trait ◽  
Drought Response ◽  
3 Dimensional ◽  
The Road ◽  
Applied Machine Learning ◽  
Maize Plants

Brassinosteroids (BRs) are a group of plant steroid hormones involved in regulating growth, development, and stress responses. Many components of the BR pathway have previously been identified and characterized. However, BR phenotyping experiments are typically performed on petri plates and/or in a low-throughput manner. Additionally, the BR pathway has extensive crosstalk with drought responses, but drought experiments are time-consuming and difficult to control. Thus, we developed Robotic Assay for Drought (RoAD) to perform BR and drought response experiments in soil-grown Arabidopsis plants. RoAD is equipped with a bench scale, a precisely controlled watering system, an RGB camera, and a laser profilometer. It performs daily weighing, watering, and imaging tasks and is capable of administering BR response assays by watering plants with Propiconazole (PCZ), a BR biosynthesis inhibitor. We developed image processing algorithms for both plant segmentation and phenotypic trait extraction in order to accurately measure traits in 2-dimensional (2D) and 3-dimensional (3D) spaces including plant surface area, leaf length, and leaf width. We then applied machine learning algorithms that utilized the extracted phenotypic parameters to identify image-derived traits that can distinguish control, drought, and PCZ-treated plants. We carried out PCZ and drought experiments on a set of BR mutants and Arabidopsis accessions with altered BR responses. Finally, we extended the RoAD assays to perform BR response assays using PCZ in Zea mays (maize) plants. This study establishes an automated and non-invasive robotic imaging system as a tool to accurately measure morphological and growth-related traits of Arabidopsis and maize plants, providing insights into the BR-mediated control of plant growth and stress responses.

Utility of radiation-free imaging for initial evaluation of pectus excavatum

2019 ◽  
Vol 29 (4) ◽  
pp. 503-509 ◽  
Author(s):  
Aurélien Scalabre ◽  
Floriane Maniouloux ◽  
Sophie Vermersch ◽  
Arnaud Patoir ◽  
Elie Haddad ◽  
...  
Keyword(s):  
Pectus Excavatum ◽  
Imaging System ◽  
Asymmetry Index ◽  
Spearman Correlation ◽  
Bonferroni Correction ◽  
3 Dimensional ◽  
Haller Index ◽  
Anthropometric Index ◽  
Anthropometric Indexes ◽  
Correlation Procedure

Abstract OBJECTIVES The OrtenBodyOne scanner is a radiation-free, 3-dimensional imaging system recently developed for evaluation of the severity of pectus excavatum (PE). The goal of this study was to evaluate the utility of this new imaging system compared with that of computed tomography (CT) for the evaluation of the severity of PE. METHODS Patients treated for PE from April 2015 to January 2017 with available CT and OrtenBodyOne data were included. Correlations between indexes calculated from CT and from OrtenBodyOne were determined by applying the non-parametric Spearman correlation procedure with a Bonferroni correction to adjust for multiple comparisons. RESULTS Forty men (90.9%) and 4 women (9.1%), 20 with symmetrical (45.5%) and 24 with asymmetrical PE (54.5%), were included. The median age was 16.1 years (range 4.3–63.5 years). The following measures and indexes acquired using OrtenBodyOne and CT were significantly correlated: pectus depth (r = 0.84; P = 0.002), anthropometric index (r = 0.81; P = 0.002) and asymmetry index (r = 0.67; P = 0.002). The correlation between the CT Haller index and the external Haller index was only significant for symmetrical PE (r = 0.57; P = 0.008). CONCLUSIONS The OrtenBodyOne imaging system can be used to evaluate the severity of symmetrical PE using the external Haller index. Asymmetry and anthropometric indexes are more reliable for the evaluation of asymmetrical PE. Measures can be repeated throughout treatment while avoiding unnecessary irradiation.

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