Elshami Wiam, Abuzaid Mohamed M, Tekin H O
Medical Diagnostic Imaging Department, College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates.
Risk Manag Healthc Policy. 2020 Jun 30;13:697-704. doi: 10.2147/RMHP.S257185. eCollection 2020.
This study assessed the effectiveness of breast and eye shielding and measured the radiation dose to radiosensitive tissues (eyes and breasts) due to scatter radiation during cervical spine X-ray radiography examinations.
Using an anthropomorphic phantom, the scattered radiation dose was measured before and after the placement of the lead shield over the eyes and breasts in the anteroposterior (AP) and left lateral projection. A regression formula was utilized to determine the exposure. Mean values and standard deviation of breasts and eyes doses were calculated. The paired two sample t-test was used to compare the recorded dose before and after shielding placement.
Radiation shielding of eyes and breasts during AP cervical spine X-ray decreased radiation dose to the breasts by 99.9% and to the left and right eye by 91% and 89%, respectively. For the left lateral cervical spine X-ray, the radiation dose decreased by 26% and 31% for the left and right eye, respectively, and by 23% and 99% for the left and right breast, respectively. A significant difference was noted comparing the dose before and after the implementing shielding on the eye and breast.
According to the results presented, the dose is significantly reduced, especially considering that they are not in the area of interest but are exposed to scatter radiation.
本研究评估了乳房和眼部屏蔽的有效性,并测量了颈椎X线摄影检查期间因散射辐射对放射敏感组织(眼睛和乳房)造成的辐射剂量。
使用人体模型,在前后位(AP)和左侧位投照时,测量在眼睛和乳房上放置铅屏蔽前后的散射辐射剂量。利用回归公式确定曝光量。计算乳房和眼睛剂量的平均值和标准差。使用配对双样本t检验比较屏蔽放置前后记录的剂量。
在AP位颈椎X线检查期间,对眼睛和乳房进行辐射屏蔽可使乳房的辐射剂量降低99.9%,左眼和右眼的辐射剂量分别降低91%和89%。对于左侧位颈椎X线检查,左眼和右眼的辐射剂量分别降低26%和31%,左乳房和右乳房的辐射剂量分别降低23%和99%。在比较对眼睛和乳房实施屏蔽前后的剂量时,发现有显著差异。
根据给出的结果,剂量显著降低,特别是考虑到它们不在感兴趣区域但受到散射辐射的影响。