Results 101 to 110 of about 57,251 (344)

Model observer task‐based assessment of computed tomography metal artifact reduction using a hip arthroplasty phantom

open access: yesMedical Physics, EarlyView.
Abstract Background The United States Food and Drug Administration (FDA) recently published a model observer‐based framework for the objective performance assessment of computed tomography (CT) metal artifact reduction (MAR) algorithms and demonstrated the framework's feasibility in the low‐contrast detectability (LCD) task‐based assessment of MAR ...
Grant Fong   +6 more
wiley   +1 more source

Prosthetic joint infections [PDF]

open access: yes, 2013
Objectives: To review the available literature on prosthetic joint infections and provide recommendations on management particularly the importance of identifying the causative organism and starting the most appropriate antimicrobial therapy.
Fsadni, Claudia, Fsadni, Peter
core  

Cobalt toxic optic neuropathy and retinopathy: Case report and review of the literature

open access: yesAmerican Journal of Ophthalmology Case Reports, 2020
Purpose: We detail a case of cobalt toxicity with visual and systemic complications, review the pathogenic process for the optic neuropathy and retinopathy, and discuss the controversy of metallic hip prosthesis. Observations: A 59-year-old female with a
Maria D. Garcia   +3 more
doaj  

X‐ray CT metal artifact reduction using neural attenuation field prior

open access: yesMedical Physics, EarlyView.
Abstract Background The presence of metal objects in computed tomography (CT) imaging introduces severe artifacts that degrade image quality and hinder accurate diagnosis. While several deep learning‐based metal artifact reduction (MAR) methods have been proposed, they often exhibit poor performance on unseen data and require large datasets to train ...
Jooho Lee   +4 more
wiley   +1 more source

A radiographic study of hip-joint alignment after prosthetic hip arthoplasty. [PDF]

open access: yes, 2002
Postoperative hip alignment was studied on radiographs in cases of total hip arthroplasty (THA) and of Bipolar Head Prosthesis(BHP), both with MX-1. Postoperative anteroposterior-view radiographs of hip joints of patients with a normal hip joint on the ...
Fujiwara, Hiroo   +2 more
core   +1 more source

Effects of extended stance time on a powered knee prosthesis and gait symmetry on the lateral control of balance during walking in individuals with unilateral amputation

open access: yesJournal of NeuroEngineering and Rehabilitation, 2019
Background Individuals with lower limb amputation commonly exhibit large gait asymmetries that are associated with secondary health issues. It has been shown that they are capable of attaining improved temporal and propulsive symmetry when walking with a
Andrea Brandt, He ( Helen) Huang
doaj   +1 more source

Model-Dependent Prosthesis Control with Interaction Force Estimation [PDF]

open access: yesarXiv, 2020
Current prosthesis control methods are primarily model-independent - lacking formal guarantees of stability, relying largely on heuristic tuning parameters for good performance, and neglecting use of the natural dynamics of the system. Model-dependence for prosthesis controllers is difficult to achieve due to the unknown human dynamics.
arxiv  

Arthrography in total hip prosthesis complications [PDF]

open access: yesAmerican Journal of Roentgenology, 1976
Previous reports have stressed the value of hip arthrography primarily in determining the presence of loosening of the total hip prosthesis. Although loosening is a common complication and frequently associated with infection, other complications producing a painful hip prosthesis exist and are demonstrable by arthrography.
openaire   +3 more sources

Biomimetic Robotics and Intelligence: A Survey

open access: yesSmartBot, EarlyView.
Biomimetic robotics and intelligence, inspired by biological systems, integrate biology, engineering, and AI, develops robots capable of adapting to complex environments. By mimicking natural structures and cognitive processes, and employing algorithms like neural networks and genetic algorithms, these systems enhance autonomy and problem‐solving. This
Yixuan Sheng   +6 more
wiley   +1 more source

Sensor Fusion for Predictive Control of Human-Prosthesis-Environment Dynamics in Assistive Walking: A Survey [PDF]

open access: yesarXiv, 2019
This survey paper concerns Sensor Fusion for Predictive Control of Human-Prosthesis-Environment Dynamics in Assistive Walking. The powered lower limb prosthesis can imitate the human limb motion and help amputees to recover the walking ability, but it is still a challenge for amputees to walk in complex environments with the powered prosthesis ...
arxiv  

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