Tsapaki Virginia, Kottou Sofia, Korniotis Sarantis, Nikolaki Niki, Rammos Spyridon, Apostolopoulou Sotiria C
Medical Physics Department, Konstantopoulio Hospital, and Medical School, University of Athens, 1 Ifaistou Street, 14569 Anixi, Athens, Greece.
Radiat Prot Dosimetry. 2008;132(4):390-4. doi: 10.1093/rpd/ncn313. Epub 2009 Jan 2.
The objective was to investigate paediatric doses in coronary angiography (CA) and percutaneous transluminal coronary angioplasty (PTCA) in the largest cardiac hospital in Greece. Forty procedures were carried out by two board-certified senior interventional cardiologists. Data collected were: patient weight, height, age, fluoroscopy time (FT), total number of images (N) and kerma-area product (KAP). Median (range) age was 7.5 y (17 d to 17 y). Median FT, N and KAP were 4 min, 655, 2.1 Gy cm2 for CA and 12.1 min, 1296, 14.7 Gy cm2 for PTCA (corresponding adult diagnostic reference levels (DRLs) are: 6.5 min, 700, 45 Gy cm2 for CA and 15.5 min, 1000 and 85 Gy cm2 for PTCA). The highest percentage of cine dose was in newborns (0-1 y) (CA: 92% and PTCA: 100%). As age increased, cine dose percentage decreased, whereas total radiation dose increased. Median paediatric FT and N recorded reached or even exceeded adult DRL and should be optimised. Paediatric DRL should be set.
目的是在希腊最大的心脏病医院研究冠状动脉造影（CA）和经皮冠状动脉腔内血管成形术（PTCA）中的儿科剂量。由两名获得委员会认证的资深介入心脏病专家进行了40例手术。收集的数据包括：患者体重、身高、年龄、透视时间（FT）、图像总数（N）和比释动能面积乘积（KAP）。年龄中位数（范围）为7.5岁（17天至17岁）。CA的FT、N和KAP中位数分别为4分钟、655、2.1 Gy cm²，PTCA的分别为12.1分钟、1296、14.7 Gy cm²（成人相应的诊断参考水平（DRL）为：CA为6.5分钟、700、45 Gy cm²，PTCA为15.5分钟、1000和85 Gy cm²）。电影剂量百分比最高的是新生儿（0 - 1岁）（CA：92%，PTCA：100%）。随着年龄增加，电影剂量百分比下降，而总辐射剂量增加。记录的儿科FT和N中位数达到甚至超过成人DRL，应进行优化。应设定儿科DRL。
