Results 51 to 60 of about 106,955 (321)
Structure Regularized Attentive Network for Automatic Femoral Head Necrosis Diagnosis and Localization [PDF]
arXiv, 2022 In recent years, several works have adopted the convolutional neural network (CNN) to diagnose the avascular necrosis of the femoral head (AVNFH) based on X-ray images or magnetic resonance imaging (MRI). However, due to the tissue overlap, X-ray images are difficult to provide fine-grained features for early diagnosis.
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose A new workflow was investigated for Elekta Unity MR‐Linac by removing the computed tomography (CT)‐simulation step and using diagnostic CT (DCT) for reference plan generation. Materials and methods Ten patients with ultra‐hypofractionated prostate cancer treated with magnetic resonance imaging (MRI)‐guided adaptive radiotherapy were ...
Yuan Xu +5 more
wiley +1 more source
Avascular Necrosis of the Femoral Head
Journal of Investigative Surgery, 2017 About 250000 patients are operated on annually for hip arthroplasty in the USA alone. Of this number, about 10% the cause of their osteoarthritis is the avascular necrosis of the femoral head. But the causes of necrosis are multiple and many of them are still unknown.
Andrea Sallent +3 more
openaire +3 more sources
Femoral osteotomy for osteonecrosis of the femoral head
Journal of Joint Surgery and Research, 2023 Purpose: Osteotomy is a joint-preserving procedure for the treatment of osteonecrosis of the femoral head. This article aimed to present current knowledge on the two types of femoral osteotomy, namely transtrochanteric rotational osteotomy of the femoral head and curved varus osteotomy of the proximal femur. Methods: This clinical review summarizes the
openaire +2 more sources
Introducing Anisotropic Minkowski Functionals and Quantitative Anisotropy Measures for Local Structure Analysis in Biomedical Imaging [PDF]
, 2020 The ability of Minkowski Functionals to characterize local structure in different biological tissue types has been demonstrated in a variety of medical image processing tasks. We introduce anisotropic Minkowski Functionals (AMFs) as a novel variant that captures the inherent anisotropy of the underlying gray-level structures. To quantify the anisotropy
arxiv +1 more source
A Python package for fast GPU‐based proton pencil beam dose calculation
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose Open‐source GPU‐based Monte Carlo (MC) proton dose calculation algorithms provide high speed and unparalleled accuracy but can be complex to integrate with new applications and remain slower than GPU‐based pencil beam (PB) methods, which sacrifice some physical accuracy for sub‐second plan calculation.
Mahasweta Bhattacharya +4 more
wiley +1 more source
BMC Musculoskeletal Disorders, 2020 Background Long-term use of steroid may lead to osteonecrosis of the femoral head (ONFH). Mechanical stress may help bone formation and remodeling. This study aimed to probe the role of mechanical stress in the femoral head recovery in rats.
Dapeng Fu +5 more
doaj +1 more source
Two-dimensional finite element simulation of fracture and fatigue behaviours of alumina microstructures for hip prosthesis [PDF]
Proceedings of the Institution of Mechanical Engineers, Part H:
Journal of Engineering in Medicine 225, 12 (2011) 1158-1168, 2012 This paper describes a two-dimensional (2D) finite element simulation for fracture and fatigue behaviours of pure alumina microstructures such as those found at hip prostheses. Finite element models are developed using actual Al2O3 microstructures and a bilinear cohesive zone law. Simulation conditions are similar to those found at a slip zone in a dry
arxiv +1 more source
Advanced Biology, EarlyView.Extracellular vesicles (EVs) play a dual role in diagnostics and therapeutics, offering innovative solutions for treating cancer, cardiovascular, neurodegenerative, and orthopedic diseases. This review highlights EVs’ potential to revolutionize personalized medicine through specific applications in disease detection and treatment.
Farbod Ebrahimi +4 more
wiley +1 more source
Patch-Based Image Similarity for Intraoperative 2D/3D Pelvis Registration During Periacetabular Osteotomy [PDF]
In OR 2.0 Context-Aware Operating Theaters, Computer Assisted
Robotic Endoscopy, Clinical Image-Based Procedures, and Skin Image Analysis
2018 Sep 16 (pp. 153-163). Springer, Cham, 2019 Periacetabular osteotomy is a challenging surgical procedure for treating developmental hip dysplasia, providing greater coverage of the femoral head via relocation of a patient's acetabulum. Since fluoroscopic imaging is frequently used in the surgical workflow, computer-assisted X-Ray navigation of osteotomes and the relocated acetabular fragment ...
arxiv +1 more source