12.先天性心疾患に対する核医学検査の適応

概要

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By means of RI angiocardiography, left to right shunt ratio and left ventricular ejection fraction (LVEF) were obtained in 188 children aged between 4 days and 18 years with suspected congenital heart disease. Scintillation camera (Toshiba GCA-70A) connected with computer system (Varian, Varicam II 64 kW) was utilized for this study. The majority of our examinations was done by bolus injection of 5-20 mCi/0.2-0.6 ml of Tc-99m-HSA. Regarding left to right shunt ratio in 55 children with left to right shunt, there was sufficient correlation (R=0.825) between the value obtained with gamma-function method and that from cardiac catheterization. Therefore, RI method was considered to be a choice of method as a less invasive screening type examination to obtain left to right shunt ratio. Regarding LVEF, there was insufficient correlation (R=0.625) between the value obtained with ECG gated cardiac pool image and that from M-mode echocardiographs in 76 children. However RI study can be performed with pharmacological stress and/or excercise stress because appeared to be beneficial for cardiac function test especially in children following an open heart surgery for congenital heart disease.
公益社団法人日本放射線技術学会の論文
1985-05-01