Effects of a vertical console position on operator muscular stress during ultrasonic diagnosis.
Ultrasound examinations tend to put sonographers in unnatural postures, which may lead to musculoskeletal disorders. In this study, we focused on the height of the operation panel of the diagnostic ultrasound system to quantitatively assess the effects of panel height (work plane height) on musculoskeletal stress during scanning in a sitting position. Eight subjects were asked to perform a simulated scanning task that involved touching nine points on the operation panel at four different panel heights. Electromyogram, left wrist joint angle, and subjective evaluation on ease of manipulation, etc., indicated that the optimum height of the operation panel during scanning in a sitting position is elbow height.
Design Section, Marketing Division, Business Strategy Department, Hitachi Aloka Medical, Ltd., Mure6-22-1, Mitaka, Tokyo, 181-8622, Japan. suzu1912@hitachi-aloka.co.jp.
Hiroyuki
H
Suzuki
Design Section, Marketing Division, Business Strategy Department, Hitachi Aloka Medical, Ltd., Mure6-22-1, Mitaka, Tokyo, 181-8622, Japan.
Takayoshi
T
Saito
Graduate School of Engineering, Chiba University, Chiba, Japan.
Yoshihiro
Y
Shimomura
Graduate School of Engineering, Chiba University, Chiba, Japan.
Tetsuo
T
Katsuura
Diagnostic ultrasound system; Ergonomics; Height from the floor; Muscular stress; Operation panel; Working environment