Measurements and imaging method of blood flow profile in human heart

Abstract

AbstractMeasurement and imaging of medical information invisible directly to human eyes are indispensable to improved diagnoses and to the delivery of quality medical care. This paper discusses development of a multichannel Doppler flowmeter for noninvasive measurement of blood flow in the human heart and the use of a computing system for visual representation of the blood flow profile. Data acquisition from multiple sites of the human body has been greatly simplified by the use of multichannel data acquisition systems developed through research. Also, a new method for discriminating the direction of blood flow, which is far better suited to digital computer processing, is here proposed and methods for displaying the flow using a color/gray level displaying system and a graphic terminal as a data output device are discussed to represent the flow information in a three‐dimensional and dynamic manner. Since it has been said in general that Doppler flowmetry is to some extent quantitatively inadequate the accuracy of the developed measuring method is determined by a simulated experiment. Although the data acquired from the measuring system are as yet processed off‐line, real‐time processing seems to be feasible if an arrow processor is employed.