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Hiroyuki Suzuki,Takayoshi Saito,Tetsuo Katsuura,Yoshihiro Shimomura 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.5
A diagnostic ultrasound system is an apparatus to aid in examination and diagnosis by displaying cross sectional images of body tissues, their movements, and blood flow produced based on the intensities and phases of reflected echoes. Most the operators operate the probe by the right hand and the operation panel by the left hand during ultra -sonic diagnosis in Japan.Ultrasound examinations tend to put sonographers in unnatural postures, which may lead to musculoskeletal disorders. In this study, we focused on the height and the horizontal positioning of the operation panel of the diagnostic ultra -sound system to quantitatively assess the influence of panel height (work plane height) and work plane position on musculoskeletal stress during scanning in a sitting position. Eight subjects (6 males and 2 females) were asked to perform a simulated scanning task that involved touching 9 points on the operation panel at 4 different panel heights. Five subjects (2 males and 3 females) were asked to perform a simulated scanning task that involved touching five points on the control panel, with the work plane set at different positions in space. Electromyograms of each part of the body and wrist joint angles indicated that the optimum height of the operation panel during scanning in a sitting position was elbow height, the least stressful position of the left hand was about 350 mm from the center of the trunk in the longitudinal (front–back) direction and 100 mm left of the center of the trunk in the lateral (right–left) direction. The height of the operation panel during scanning in a sitting position affects the stress on the forearm and shoulder. We indicated that the optimum height of the operation panel was elbow height. The longitudinal position of the control panel during scanning in a sitting position affected the stress in the left forearm and left lumbar regions. The lateral position of the control panel during scanning in a sitting position affected the stress in the left shoulder rgion.We indicated that the least stressful position of the left hand was these on the horizontal positioning of the operation panel.
( Hiroyuki Suzuki ),( Takayoshi Saito ),( Tetsuo Katsuura ),( Yoshihiro Shimomura ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-
A diagnostic ultrasound system is an apparatus to aid in examination and diagnosis by displaying cross-sectional images of body tissues, their movements, and blood flow produced based on the intensities and phases of reflected echoes. Most the operators operate the probe by the right hand and the operation panel by the left hand during ultrasonic diagnosis in Japan. Ultrasound examinations tend to put sonographers in unnatural postures, which may lead to musculoskeletal disorders. In this study, we focused on the height and the horizontal positioning of the operation panel of the diagnostic ultrasound system to quantitatively assess the influence of panel height (work plane height) and work plane position on musculoskeletal stress during scanning in a sitting position. Eight subjects (6 males and 2 females) were asked to perform a simulated scanning task that involved touching 9 points on the operation panel at 4 different panel heights. Five subjects (2 males and 3 females) were asked to perform a simulated scanning task that involved touching fie points on the control panel, with the work plane set at different positions in space. Electromyograms of each part of the body and wrist joint angles indicated that the optimum height of the operation panel during scanning in a sitting position was elbow height, the least stressful position of the left hand was about 350 mm from the center of the trunk in the longitudinal (front-back) direction and 100 mm left of the center of the trunk in the lateral (right-left) direction.