ボリュームCTを用いた心機能評価に関する基礎的検討

概要

論文の詳細を見る
Cardiac images were taken in altered pulse counts on a pulsating cardiac phantom, revolving speed of X-ray tube, image reconstructing mode, and beam pitch with 32 DAS MDCT. The objective of this study was to determine whether conditions of image taking affect calculated values of ejection fraction (EF). Moreover, the EF values measured by left ventriculography (LVG) and by coronary computed tomography (CT) were compared using clinical data of 4 patients who underwent both coronary CT and LVG. On evaluating the pulsating cardiac phantom images, the EF values measured by coronary CT were generally smaller than those measured by LVG. On evaluation of the pulsating cardiac phantom images, the values of end-diastolic volume (EDV) and end-systolic volume (ESV) measured by coronary CT were smaller than those measured by LVG. On the contrary, the EF values measured by coronary CT were bigger than those measured by LVG. The maximal difference between the EF values measured by LVG and those measured by coronary CT was approximately 10% based upon the values measured by LVG.
社団法人日本放射線技術学会の論文
2007-10-20