Fordham L A, Brown E D, Washburn D, Clark R L
Department of Radiology, University of North Carolina School of Medicine, Chapel Hill 27699-7510, USA.
Acad Radiol. 1997 Sep;4(9):639-43. doi: 10.1016/s1076-6332(05)80269-7.
The purpose was to measure radiation exposure to the breasts during abdominal fluoroscopic examinations and evaluate the efficacy of breast shielding with a leaded vest.
Sixty-six women underwent routine abdominal fluoroscopic examinations. During the examinations one breast was covered with a leaded shield. Radiation doses to both breasts were measured with a thermoluminescent dosimeter. The amount of radiation at the skin of the shielded breast was then compared with that at the skin of the nonshielded breast.
Radiation exposure to the breasts varied substantially with the type of examination being performed and with the individual patient. The average radiation level at the skin of the unshielded breast was 119 mR (range, 0-6,320 mR), compared with 59.6 mR (range, 0-1,640 mR) at the shielded breast. The average reduction in radiation exposure was 50% with shielding.
Although the average level of radiation exposure to the breast during abdominal fluoroscopic examinations is generally low, use of a leaded vest can further reduce radiation to the breast for different types of examinations.
本研究旨在测量腹部荧光透视检查期间乳房的辐射暴露情况，并评估铅制防护背心对乳房的防护效果。
66名女性接受了常规腹部荧光透视检查。检查期间，一侧乳房用铅制防护屏覆盖。使用热释光剂量计测量双侧乳房的辐射剂量。然后将防护侧乳房皮肤处的辐射量与未防护侧乳房皮肤处的辐射量进行比较。
乳房的辐射暴露量因检查类型和个体患者的不同而有很大差异。未防护侧乳房皮肤处的平均辐射水平为119毫伦琴（范围为0 - 6320毫伦琴），而防护侧乳房皮肤处为59.6毫伦琴（范围为0 - 1640毫伦琴）。使用防护屏后，辐射暴露的平均减少量为50%。
虽然腹部荧光透视检查期间乳房的平均辐射暴露水平通常较低，但对于不同类型的检查，使用铅制防护背心可进一步减少乳房所受辐射。
