Title :
Synchronized measurements of maximum blood flow velocities in carotid, brachial and femoral arteries, and ECG in human posture changes
Author :
Hirao, Y. ; Kuroda, T. ; Zhang, D. ; Kinouchi, Y. ; Yamaguchi, H. ; Yoshizaki, K.
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokushima Univ., Japan
Abstract :
In this research, a system has been developed to measure the maximum blood flow velocity simultaneously by an ultrasonic Doppler technique in three arteries during posture changes. As a peculiarity of this system, two semicircular transducers of 15.0 mm in diameter were used as a transmitter to irradiate a wide ultrasonic beam and a receiver. Because, the position relation between an artery and transducers change rapidly during exercise. This system could be applied to a human body changing from a sitting position to an erect position with voluntary muscle constriction. As a result of measurements, the maximum blood flow velocity in femoral artery has been increased significantly in posture changes like the above
Keywords :
Doppler measurement; biomechanics; biomedical ultrasonics; blood flow measurement; blood vessels; electrocardiography; ultrasonic transducers; ultrasonic velocity measurement; 15.0 mm; ECG; brachial artery; carotid artery; erect position; exercise; femoral artery; human posture changes; maximum blood flow velocities; semicircular transducers; sitting position; synchronized measurements; ultrasonic Doppler technique; voluntary muscle constriction; Arteries; Blood flow; Brachytherapy; Fluid flow measurement; Frequency; Humans; Probes; Ultrasonic transducers; Ultrasonic variables measurement; Velocity measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Conference_Location :
Istanbul
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1018870
