ダイナミックCTによる心拍出量の測定 : Thermodilution法との比較

概要

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The capacity of new computed(CT) tomography instrument with excellent time resolution to measure cardiac output was explored. Dynamic scans of serial one-second images were performed at the middle section pf left ventricle for 28 sec. We injected a bolus of 0.3ml/kg angiografin for 2 sec or 0.4ml/kg angiografin for 4sec into the inferior vena cava. The regions of interest were set in the left venticular cavity and thoracic aorta. Cardiac output was calculated by applying indicator dilution principles. The results were compared with those abtained by thermodilution. The CT results by using 2sec 0.3ml/kg angiografin correlated well(r=0.91,<0.001) with those of thermodilution. This study indicates the utility of dynamic CT for estimation of cardiac output.
公益社団法人日本放射線技術学会の論文