Department of Cardiovascular Medicine, Beaumont Hospital Royal Oak, Royal Oak, MI, United States of America.
Department of Cardiovascular Medicine, Beaumont Hospital Royal Oak, Royal Oak, MI, United States of America.
Cardiovasc Revasc Med. 2022 Mar;36:51-55. doi: 10.1016/j.carrev.2021.05.017. Epub 2021 May 21.
This pre-clinical study evaluated the efficacy of a novel shielding system to reduce scatter radiation in the cardiac catheterization laboratory.
Using a scatter radiation phantom in a standard cardiac catheterization laboratory, a radiation physicist recorded radiation measurements at 20 reference points on the operator side of the table. Measurements were made with fluoroscopy and cine with the C-arm in the posterior-anterior (PA) and 40 degrees left anterior oblique (LAO) orientations. Scatter radiation doses were compared with and without use of the shielding system.
Use of the shielding system was associated with >94.2% reduction in scatter radiation across all reference points in the PA and LAO projections with fluoroscopy and cine. With the shielding system, dose reductions at the location of the primary operator ranged from 97.8% to 99.8%. At locations of maximum scatter radiation, use of the shielding system resulted in dose reductions ranging from 97.8% to 99.8% with fluoroscopy and from 97.9% to 99.8% with cine.
In this pre-clinical study, a novel radiation shielding system was observed to dramatically reduce scatter radiation doses. Based on these results, clinical testing is warranted to determine whether the shielding system will enable operators and staff to perform interventional procedures with less radiation exposure that may obviate the need to wear standard lead apparel.
Radiation safety; occupational health; occupational hazard.
本临床前研究评估了一种新型屏蔽系统在减少心血管造影室内散射辐射方面的疗效。
在标准心血管造影室内使用散射辐射体模，辐射物理学家在桌子操作员侧的 20 个参考点记录辐射测量值。使用透视和电影摄影，C 臂处于前后位（PA）和 40 度左前斜位（LAO）。比较使用和不使用屏蔽系统时的散射辐射剂量。
使用屏蔽系统时，在透视和电影摄影的 PA 和 LAO 投影中，所有参考点的散射辐射减少>94.2%。使用屏蔽系统时，初级操作人员位置的剂量减少范围为 97.8%至 99.8%。在最大散射辐射位置，使用屏蔽系统可使透视时的剂量减少 97.8%至 99.8%，电影摄影时的剂量减少 97.9%至 99.8%。
在这项临床前研究中，观察到一种新型辐射屏蔽系统可显著减少散射辐射剂量。基于这些结果，有必要进行临床测试，以确定屏蔽系统是否能使操作人员和工作人员在接受较少辐射的情况下进行介入性手术，从而可能避免需要穿标准的铅服。
辐射安全；职业健康；职业危害。
