Rana Bhupendra Singh, Kumar Sanjeev, Ahuja Chirag Kamal, Singh Narinder Paul, Yadav Mukesh Kumar, Sandhu Inderjeet Singh
Department of Radiodiagnosis, PGIMER, Chandigarh, India.
Department of Physics, G.G.D.S.D. College, Chandigarh, India.
Radiat Prot Dosimetry. 2018 Oct 1;181(3):290-300. doi: 10.1093/rpd/ncy025.
The present work reports data of the radiation exposure to the patient in various diagnostic and therapeutic interventional radiological (IR) procedures. The study includes 260 diagnostic and 195 therapeutic exposure data in 455 IR procedures. All the IR procedures were performed on a biplane angiographic machine in a tertiary care hospital. The radiation exposure was estimated from dose-area product (DAP), fluoroscopy time (FT), number of fluoroscopic runs, number of images and cumulative dose (CD) value recorded during the procedure. The data reported in the present study show significant variability in DAP values in diagnostic and therapeutic IR procedures. In diagnostic procedures, the minimum median DAP value is 8.93 Gy cm2 for upper limb angiography with mean FT of 2.7 min and maximum DAP value is 108.8 Gy cm2 for inferior vena cava angiography with mean FT of 12.55 min. For therapeutic procedures, the median value of DAP ranges from 2.43 Gy cm2 for sclerotherapy with mean FT 0.65 min to 267.23 Gy cm2 for coiling of cerebral aneurysm with mean FT of 60.52 min. The DAP value for each procedure was also correlated with FT, number of fluoroscopic runs, number of images and CD. The reported DAP values in this study are within the range of earlier published results which suggest that our finding provides at least approximate applicability to other hospitals. The third quartile DAP values of the procedures having significant number of patient data (n ≥ 10) serves as provisional reference values for the optimization of procedure protocols.
本研究报告了患者在各种诊断性和治疗性介入放射学（IR）程序中的辐射暴露数据。该研究包括455例IR程序中的260例诊断性和195例治疗性暴露数据。所有IR程序均在一家三级护理医院的双平面血管造影机上进行。辐射暴露是根据程序期间记录的剂量面积乘积（DAP）、透视时间（FT）、透视次数、图像数量和累积剂量（CD）值估算的。本研究报告的数据显示，诊断性和治疗性IR程序中的DAP值存在显著差异。在诊断程序中，上肢血管造影的最小中位DAP值为8.93 Gy cm²，平均FT为2.7分钟，而下腔静脉血管造影的最大DAP值为108.8 Gy cm²，平均FT为12.55分钟。对于治疗程序，DAP的中位值范围从硬化疗法的2.43 Gy cm²（平均FT 0.65分钟）到脑动脉瘤栓塞术的267.23 Gy cm²（平均FT 60.52分钟）。每个程序的DAP值也与FT、透视次数、图像数量和CD相关。本研究报告的DAP值在早期发表结果的范围内，这表明我们的发现至少对其他医院具有近似的适用性。具有大量患者数据（n≥10）的程序的第三四分位数DAP值用作程序方案优化的临时参考值。
