文档介绍：临床医学
生物电阻抗方法测量液体胃排空的研究****☆
李章勇,沙洪,赵舒,王妍,任超世
Liquid gastric emptying measurement by an electrical bio-impedance technique
Li Zhang-yong, Sha Hong, Zhao Shu, Wang Yan, Ren Chao-shi
Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
Li Zhang-yong☆, Doctor, Associate professor, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
renbme@
Correspondence to: Ren Chao-shi, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
bmeren@
Supported by: the National Natural Science Foundation of China, No. 60471041*, the Science Foundation of Chongqing University of Posts and munications, No. A2004-61*, A2005-80*, G2005-5*
Received:2007-10-10
Accepted:2007-11-09
Abstract
AIM: To seek a convenient effective non-invasive gastric emptying way, we develop a new approach based on bio-impedance technology to obtain the liquid gastric emptying curve and measure the half of gastric emptying time.
METHODS: An impedance measurement system using four-electrode method has developed. The measurement system consists of sine signal generator, constant-source, electrodes, preamplifier, demodulation/filter circuit, data acquisition system and puter. Twenty-four healthy vo