Effectivity of lead aprons to reduce the radiation dose of patient in CT.
Effectivity of lead aprons to reduce the radiation dose of patient in CT.
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DOI：
10.1055/s-2007-1015790
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发表时间：
1996-11-01
影响因子：
1.8
通讯作者：
Felix, R
中科院分区：
文献类型：
--
作者：
Hidajat, N;Schroder, RJ;Felix, R
目的：计算机断层扫描检查中铅围裙、睾丸囊和甲状腺项圈降低子宫、卵巢、睾丸和甲状腺剂量的有效性研究。方法：在Alderson-Rando体模下，用热释光剂量计测量子宫、卵巢、睾丸和甲状腺的剂量。模拟上腹部、全腹部和颅骨的CT，无铅屏蔽和有铅屏蔽。作为铅屏蔽，在上腹部CT的情况下，在体模的骨盆周围连接铅围裙，在全腹部CT中使用睾丸胶囊，在颅骨CT中使用甲状腺项圈。结果：在上腹部CT中，铅围裙未导致子宫和卵巢中任何可识别的剂量降低。在全腹部CT中，睾丸包膜导致睾丸剂量减少95%（1.39 mSv），在颅骨CT中，甲状腺领导致甲状腺剂量减少23%（0.19 mSv）。结论：在腹部CT检查中，睾丸囊是减少睾丸剂量的重要工具，而铅围裙不适合减少子宫和卵巢的剂量。在头颅CT检查中，甲状腺项圈能显著降低甲状腺的散射辐射照射量，值得推荐。
Purpose: Investigation of the efficacy of lead apron, testis capsule and thyroid collar for dose reduction in uterus, ovaries, testes and thyroid gland in computed tomography examinations. Methods: At an Alderson-Rando-phantom dose of uterus, ovaries, testes and thyroid gland was measured with thermoluminescent dosemeters. CT of the upper abdomen, the whole abdomen and the skull were simulated without and with lead shielding. As lead shielding, a lead apron was attached around the pelvis of the phantom in case of CT of the upper abdomen, a testis capsule was used in CT of the whole abdomen and a thyroid collar in CT of the skull. Results: In CT of the upper abdomen the lead apron did not lead to any recognisable dose reduction in uterus and ovaries. In CT of the whole abdomen the testis capsule led to a dose reduction in testes of 95% (1.39 mSv) and in CT of the skull the thyroid collar to a dose reduction in thyroid gland of 23% (0.19 mSv). Conclusions: In abdominal CT examinations the testis capsule is an important instrument to reduce the dose of the testes whereas the lead apron is not appropriate for a dose reduction in the uterus and ovaries. In CT of the skull the thyroid collar can remarkably reduce the scattered radiation exposure of the thyroid gland and should be recommended.