Abstract
Sarcopenia is defined as muscle mass and strength loss with aging. As places, such as South Korea, Japan, and Europe have entered an aged society, sarcopenia is attracting global attention with elderly health. However, only few developed devices can quantify sarcopenia diagnosis modalities. Thus, the authors developed a sarcopenia detection system with 4 degrees of freedom to scan the human thigh with ultrasound probe and determine whether he/she has sarcopenia by inspecting the length of muscle thickness in the thigh by ultrasound image. To accurately measure the muscle thickness, the ultrasound probe attached to the sarcopenia detection system, must be moved angularly along the convex surface of the thigh with predefined pressure maintained. Therefore, the authors proposed an angular thigh scanning method for the aforementioned reason. The method first curve-fits the angular surface of the subject’s thigh with piecewise arcs using D information from a fixed RGB-D camera. Then, it incorporates a Jacobian-based ultrasound probe moving method to move the ultrasound probe along the curve-fitted arc and maintains radial interface force between the probe and the surface by force feedback control. The proposed method was validated by in-vitro test with a human thigh mimicked ham-gelatin phantom. The result showed the ham tissue thickness was maintained within approximately 26.01 ± 1.0 mm during 82 scanning with a 2.5 N radial force setting and the radial force between probe and surface of the phantom was maintained within 2.50 ± 0.1 N.
Highlights
Sarcopenia is a condition characterized by the loss of muscle mass and strength [1]
The proposed angular thigh scanning method for the developed sarcopenia detection system was validated by an in-vitro test with a human thigh mimicked ham-gelatin phantom
Ham is thought to be a good substitute for muscle in the human thigh, and the gelatin is widely used for ultrasound phantom development [48,49]
Summary
Sarcopenia is a condition characterized by the loss of muscle mass and strength [1]. To measure muscle mass and strength and to diagnose sarcopenia, various methods have been suggested and clinically applied [4]. These methods include anthropometry, bioelectrical impedance analysis (BIA), dual energy X-ray absorptiometry (DEXA), computer tomography (CT)/magnetic resonance imaging (MRI), and sonography. In anthropometry [5,6,7], an observer directly measures the subject’s body status. It is a simple and clinically applied method in many hospitals.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.