第11题: [单项选择]下列心肌灌注显像剂中,存在再分布显像的是 A. 201TlCl B. 99mTc-sestamibi C. 99mTc-CPI D. 99mTc-TBI E. 99mTc-tetrofosmin 参考答案:A 答案解析:再分布是指正常心肌细胞清除201Tl的速度较缺血心肌快,随着时间延长,二者的放射性浓度差别越来越小,甚至消失(一般在3~4小时),在延迟显像图上可见到放射性“充填”现象,核医学称
第17题: [填空题]Singleton’s studies compare the situation of all children with that of the ______ of adults motivated to formally learn other languages. 参考答案:minority 答案解析:Singleton’s studies compare the situation of all children with that of the _____ of adults motivated