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, H. Ito, M. Hori, M. Fukushima, M. Inoue, H. Abe

Research output: Contribution to journalConference article

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
Pages (from-to)168-169
Number of pages2
JournalJapanese journal of medical electronics and biological engineering
Volume22
Publication statusPublished - Apr 1 1984
Externally publishedYes

ASJC Scopus subject areas

  • Biomedical Engineering

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  • Cite this

    Morita, T., Kitabatake, A., Asao, M., Tanouchi, J., Ishihara, K., Chihara, K., Fujii, K., Masuyama, T., Ito, H., Hori, M., Fukushima, M., Inoue, M., & Abe, H. (1984). VISUALIZATION OF INTRACARDIAC ABNORMAL FLOW BY A NEWLY DEVELOPED PULSED DOPPLER TECHNIQUE. Japanese journal of medical electronics and biological engineering, 22, 168-169.