Adla Theodor, Kočí Martin, Suchánek Vojtěch, Šalagovičová Zuzana, Polovinčák Michal, Mikšík Lukáš, Janoušek Jan, Roček Miloslav
Department of Radiodiagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic.
Department of Radiology, University Hospital Motol and 2nd Faculty of Medicine, Charles University, 150 06 Prague, Czech Republic.
Children (Basel). 2022 Aug 5;9(8):1172. doi: 10.3390/children9081172.
Background: To assess the impact of different clinical questions on radiation doses acquired during cardiac computed tomography in children. Methods: A total of 116 children who underwent cardiac CT on a third-generation dual-source CT scanner were included. The clinical questions were divided into three main categories: the extent of scanning in the z-axis, coronary artery assessment and cardiac function assessment. Radiation dose values represented as a dose-length product (DLP) in mGycm were recorded from the CT scanner protocols. Results: There were significantly higher doses in cases with cardiac function assessment (median DLP 348 versus 59 mGycm, p < 0.01) and in cases with coronary artery assessment (median DLP 133 versus 71 mGy*cm, p < 0.01). Conclusion: The most important factor was the assessment of cardiac function, where the median radiation dose was 4.3× higher in patients with a request for cardiac function assessment. We strongly recommend that clinical requests for cardiac CT should be carefully considered in the paediatric population.
评估不同临床问题对儿童心脏计算机断层扫描期间所获辐射剂量的影响。方法：纳入116例在第三代双源CT扫描仪上接受心脏CT检查的儿童。临床问题分为三大类：z轴扫描范围、冠状动脉评估和心功能评估。从CT扫描仪协议中记录以毫戈瑞·厘米（mGycm）表示的剂量长度乘积（DLP）形式的辐射剂量值。结果：心功能评估病例（中位DLP 348对59 mGycm，p < 0.01）和冠状动脉评估病例（中位DLP 133对71 mGy*cm，p < 0.01）的辐射剂量显著更高。结论：最重要的因素是心功能评估，在心功能评估需求的患者中，中位辐射剂量高出4.3倍。我们强烈建议在儿科人群中应仔细考虑心脏CT的临床需求。
