Title :
Less-invasive Emax estimation under cardiac assistance based on angular frequency method
Author :
Yoshizawa, Makoto ; Abe, Ken-ichi ; Sato, Daisuke ; Takeda, Hiroshi ; Yambe, Tomoyuki ; Nitta, Shin-ichi
Author_Institution :
Dept. of Electr. Eng., Tohoku Univ., Sendai, Japan
Abstract :
A new less-invasive method of estimating the maximum elastance (E max) of the myocardium under cardiac assistance without direct measurement of the left ventricular volume has been developed. The key technique is to estimate the angular frequency identifying the value of Emax in the three element Windkessel model. Numerical simulations and in vivo experiments have been carried out to examine the adequacy of the method
Keywords :
biomechanics; cardiology; elasticity; muscle; physiological models; angular frequency method; cardiac assistance; in vivo experiments; left ventricular volume; less-invasive Emax estimation; maximum elastance; myocardium; numerical simulations; three element Windkessel model; Clamps; Electrical resistance measurement; Equations; Fluid flow measurement; Frequency estimation; In vivo; Myocardium; Numerical simulation; Pressure measurement; Volume measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.412081
