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Heart’s Motion Derived From Vibration of the Chest
Fumio Nogata,Yasunari Yokota,Yoko Kawamura 한국재활복지공학회 2012 한국재활복지공학회 학술대회논문집 Vol.2012 No.11
We found that slight vibration of the chest surface due to a heartbeat allows visualizing the heart motion, which would assist to understand heart function. This technique is based on a multi-channel vibration sensor and signal/image processing units. Vibration modes of the chest surface have three or four frequencies bands. Contour of a heart wall with data of 1-50 Hz, also shock wave and locations of valves with higher frequency could be visualized. The technique may allow to monitoring heart motion in pre-and postoperative state to understand irregular heartbeat, heart motion during sleeping and in mental tension without using ultrasound cardiographyly.