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Computer-Aided Detection of Mammographic Masses Using Hybrid Region Growing Controlled by Multilevel Thresholding
Springer Science and Business Media LLC - Tập 39 - Trang 352-366 - 2018
Masses are one of the common signs of nonpalpable breast cancer visible in mammograms. However, due to its irregular and obscured margin, variability in size, and occlusion within dense breast tissue, a mass may be missed during screening. In this paper, we propose a novel approach for automatic detection of mammographic masses using an iterative method of multilevel high-to-low intensity threshol......
Development of Multi-axis Motor Control Systems for Lower Limb Robotic Exoskeleton
Springer Science and Business Media LLC - Tập 39 - Trang 752-763 - 2018
The aim of this study was to establish a control system with multi-axis motors for a lower limb robotic exoskeleton (LLRE). This LLRE structure was built by using an aluminum alloy designed with an adjustable mechanism. A four-motor control system with four Maxon brushless direct current motors was developed and installed in the hips and knees of the LLRE, respectively. In addition, four harmonic ......
Comparative Analysis of the Biomechanical Behavior of Collar and Collarless Stems: Experimental Testing and Finite Element Modelling
Springer Science and Business Media LLC - Tập 41 - Trang 844-855 - 2021
During total hip replacement (THR), prosthesis material is stiffer than the bone tissue, decreasing load transmission to the host tissue around the prosthesis. After a THR, the aim is to achieve stress distribution along the femur close to normal physiological stress distribution for all loads transferred across the hip joint. In this study, we analyzed the advantages of using a collared stem over......
The Effects of Diameter, Length and Insertion Method on the Stability of Orthodontic Miniscrew
Springer Science and Business Media LLC - Tập 42 - Trang 508-515 - 2022
This study investigated the maximum insertion torque value (ITV) of different dimensions of orthodontic miniscrews for primary stability, and further explored the effects of continuous rotation insertion and intermittent rotation insertion methods on the stability of orthodontic miniscrews.
Six different dimensions of orthodontic miniscrews, three lengths (6.0, 8.0, and 10.0 mm) and two diameter......
Estimation of the Skeletal Muscle Cross-Sectional Area of the Lower Extremity Using Structured Light Three-Dimensional Scanning Technology
Springer Science and Business Media LLC - - 2023
We developed a method to estimate the cross-sectional area (CSA) of the lower limb skeletal muscle using lower extremity circumference measured by a three-dimensional (3D) structured light scanner. 3D scanning data and magnetic resonance (MR) images of the lower extremities of 36 volunteers were collected. MR images of the lower extremities of 31 supplementary volunteers were also obtained. The CS......
Comparison of Different Pullout Test Setups for Evaluation of Bone–Implant Interfacial Strength of Anterior Lumbar Interbody Fusion Devices
Springer Science and Business Media LLC - - 2018
Experimental approaches have been widely used to investigate the bone–implant interfacial strength of anterior lumbar interbody fusion (ALIF) devices. However, improper design of experimental jigs and inconsistencies in cadaveric specimens might significantly impede the evaluation of different ALIF device designs. Therefore, this study aimed to investigate and compare various test setups in terms ......
Common Subtype of Small Renal Mass MR Imaging Characterisation: A Medical Center Experience in Taiwan
Springer Science and Business Media LLC - Tập 42 - Trang 87-97 - 2022
Many studies have shown that multiparametric magnetic resonance imaging (MRI) may be helpful for differentiating malignant renal cell carcinomas (RCCs) from benign lesions. However, the key imaging characteristics that differ between malignant and benign tumors still require further discussion. We analyzed 60 adult patients diagnosed with 72 small renal masses (SRMs) who received preoperative MRI ......
The Efficacy of Respiratory Regulation on Parasympathetic Nervous System Appraised by Heart Rate Variability
Springer Science and Business Media LLC - Tập 39 - Trang 960-966 - 2019
Stress and sleep deprivation are caused by the imbalance of autonomic nervous system, especially in low activity of parasympathetic nervous system (PNS), which affect daily living and impact economics severely. Since the PNS restores and conserves body and in response to stimulations. Moreover, voluntary control of respiratory rhythm, known as respiratory regulation, is considered a type of extern......
Scapular Motion Tracking Using Acromion Skin Marker Cluster: In Vitro Accuracy Assessment
Springer Science and Business Media LLC - Tập 35 - Trang 94-103 - 2015
Several studies have recently investigated how the implementations of acromion marker clusters (AMCs) method and stereo-photogrammetry affect the estimates of scapula kinematics. However, in the large majority of these studies, the accuracy assessment of the scapular kinematics obtained with AMCs was carried out through a comparative evaluation using a scapula locator that is prone to error. The p......
Enhanced Musculoskeletal Modeling for Prediction of Intervertebral Disc Stress Within Annulus Fibrosus and Nucleus Pulposus Regions During Flexion Movement
Springer Science and Business Media LLC - - 2016
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