VISUALIZATION OF INTRACARDIAC ABNORMAL FLOW BY A NEWLY DEVELOPED PULSED DOPPLER TECHNIQUE.

Toshio Morita, A. Kitabatake, M. Asao, J. Tanouchi, K. Ishihara, K. Chihara, K. Fujii, T. Masuyama, Hiroshi Itoh, M. Hori, M. Fukushima, M. Inoue, H. Abe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The authors have developed a system which combines duplex Doppler echocardiography and digital multigate Doppler technique, providing structure and flow information simultaneously. This study evaluated the flow abnormalities in patients with aortic regurgitation and with mitral regurgitation by the turbulence index, the square root of the variance of the instantaneous power frequency spectrum of Doppler signals. The color coded display of turbulence indexes was superimposed on the two-dimensional echocardiogram to visualize the distribution of the intracardiac flow abnormalities. The regurgitant flow distribution on the two-dimensional cardiac image was coincident with that of angiography. The results suggest that the method offers quantitative evaluation of the distribution of regurgitation.

Original languageEnglish
Title of host publicationJapanese Journal of Medical Electronics and Biological Engineering
PublisherJapan Soc of Medical Electronics & Biological Engineering
Pages168-169
Number of pages2
Volume22
Publication statusPublished - Apr 1984
Externally publishedYes

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Morita, T., Kitabatake, A., Asao, M., Tanouchi, J., Ishihara, K., Chihara, K., Fujii, K., Masuyama, T., Itoh, H., Hori, M., Fukushima, M., Inoue, M., & Abe, H. (1984). VISUALIZATION OF INTRACARDIAC ABNORMAL FLOW BY A NEWLY DEVELOPED PULSED DOPPLER TECHNIQUE. In Japanese Journal of Medical Electronics and Biological Engineering (Vol. 22, pp. 168-169). Japan Soc of Medical Electronics & Biological Engineering.