Radionuclide left ventricular absolute volume determination by ejection fraction measurement data and a left posterior oblique blood pool image.
A new method for the calculation of left ventricular volumes called the "semi-geometric" method, was reported by Nichols et al in 1984. This method, however, still had certain limitations for practical use. This paper describes a modified semi-geometric method in which the left ventricular volume was obtained from conventional left ventricular ejection fraction measurement data collected from the modified left anterior oblique position with a caudal tilt of 10 degrees or more and a left posterior oblique blood pool image. The left ventricular end-diastolic volumes obtained by this method were compared with those calculated by combining the thermodilution cardiac output and the left ventricular ejection fraction. The correlation coefficient was r = 0.93 (n = 20). In the phantom experiment, the true volumes and those obtained by this method showed an excellent correlation (r = 0.99). This method is considered accurate and practical.
Kinoshita
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S
Second Department of Internal Medicine, Saitama Medical School, Japan.
D000328:Adult; D000368:Aged; D005260:Female; D015637:Gated Blood-Pool Imaging; D006321:Heart / Q000000981:diagnostic imaging*; D006331:Heart Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D008955:Models, Cardiovascular; D008961:Models, Structural; D015588:Observer Variation; D011187:Posture; D011237:Predictive Value of Tests; D012588:Scintillation Counting; D013318:Stroke Volume; D013815:Thermodilution