Giarenis Ilias, Phillips Jonathan, Mastoroudes Heleni, Srikrishna Sushma, Robinson Dudley, Lewis Cornelius, Cardozo Linda
Department of Urogynaecology, King's College Hospital, London, SE5 9RS, UK.
Int Urogynecol J. 2013 Sep;24(9):1547-51. doi: 10.1007/s00192-013-2062-6. Epub 2013 Feb 22.
Our aim was to calculate the total radiation exposure and the dose absorbed by specific organs during videourodynamics (VUDS) in women.
This was a retrospective study of consecutive women attending for VUDS in a tertiary referral urodynamics unit. Tests with missing data and those that were terminated during the filling phase of the cystometry were excluded from the study. The VUDS examination was tailored according to the indication for the test and the urodynamic question to be answered. The PCXMC simulation program (version 2.0) was utilised to calculate the effective dose and the dose absorbed by individual organs.
Out of 345 consecutive VUDS, 264 were included in the study. The mean effective dose was 0.34 mSv (SD: 0.15) and the mean fluoroscopic time was 63.15 s (SD: 21.81). Multivariate linear regression analysis of factors affecting the radiation dose showed that BMI (p = 0.009) and fluoroscopy time (p < 0.001) were the only statistically significant factors. The final linear regression model for the estimation of the effective dose was Eff. Dose (mSv) = -0.049 + 0.003 · BMI (kg/m(2)) + 0.005 · fluoroscopy time (s).
This study reveals that women are exposed to relatively small amounts of radiation during VUDS. The use of fluoroscopy only without additional static radiographic images minimises exposure to a level consistent with the "as low as reasonably achievable" radiological principle.
我们的目的是计算女性进行视频尿动力学检查（VUDS）期间的总辐射暴露量以及特定器官吸收的剂量。
这是一项对在三级转诊尿动力学单位接受VUDS检查的连续女性患者进行的回顾性研究。研究排除了数据缺失的检查以及在膀胱测压充盈期终止的检查。VUDS检查根据检查指征和要回答的尿动力学问题进行定制。使用PCXMC模拟程序（版本2.0）计算有效剂量和各个器官吸收的剂量。
在连续的345例VUDS检查中，264例被纳入研究。平均有效剂量为0.34 mSv（标准差：0.15），平均透视时间为63.15秒（标准差：21.81）。对影响辐射剂量的因素进行多变量线性回归分析表明，体重指数（p = 0.009）和透视时间（p < 0.001）是仅有的具有统计学意义的因素。用于估算有效剂量的最终线性回归模型为：有效剂量（mSv）= -0.049 + 0.003·体重指数（kg/m²）+ 0.005·透视时间（秒）。
本研究表明，女性在VUDS检查期间受到的辐射量相对较小。仅使用透视而不额外使用静态放射图像可将辐射暴露降至与“合理可行尽量低”的放射学原则相一致的水平。
