白俄罗斯共和国计算机断层扫描剂量调查及国家诊断参考水平的确定。
Survey of computed tomography doses and establishment of national diagnostic reference levels in the Republic of Belarus.
作者信息
Kharuzhyk S A, Matskevich S A, Filjustin A E, Bogushevich E V, Ugolkova S A
机构信息
Department of Diagnostic Radiology, NN Alexandrov National Cancer Center of Belarus, Minsk, Belarus.
出版信息
Radiat Prot Dosimetry. 2010 Apr-May;139(1-3):367-70. doi: 10.1093/rpd/ncq070. Epub 2010 Feb 24.
Computed tomography dose index (CTDI) was measured on eight CT scanners at seven public hospitals in the Republic of Belarus. The effective dose was calculated using normalised values of effective dose per dose-length product (DLP) over various body regions. Considerable variations of the dose values were observed. Mean effective doses amounted to 1.4 +/- 0.4 mSv for brain, 2.6 +/- 1.0 mSv for neck, 6.9 +/- 2.2 mSv for thorax, 7.0 +/- 2.3 mSv for abdomen and 8.8 +/- 3.2 mSv for pelvis. Diagnostic reference levels (DRLs) were proposed by calculating the third quartiles of dose value distributions (body region/volume CTDI, mGy/DLP, mGy cm): brain/60/730, neck/55/640, thorax/20/500, abdomen/25/600 and pelvis/25/490. It is evident that the protocols need to be optimised on some of the CT scanners, in view of the fact that these are the first formulated DRLs for the Republic of Belarus.
在白俄罗斯共和国七家公立医院的八台CT扫描仪上测量了计算机断层扫描剂量指数（CTDI）。使用不同身体部位每剂量长度乘积（DLP）的有效剂量归一化值计算有效剂量。观察到剂量值存在相当大的差异。脑部的平均有效剂量为1.4±0.4 mSv，颈部为2.6±1.0 mSv，胸部为6.9±2.2 mSv，腹部为7.0±2.3 mSv，骨盆为8.8±3.2 mSv。通过计算剂量值分布的第三个四分位数（身体部位/容积CTDI，mGy/DLP，mGy cm）提出了诊断参考水平（DRL）：脑部/60/730，颈部/55/640，胸部/20/500，腹部/25/600，骨盆/25/490。鉴于这些是白俄罗斯共和国首次制定的DRL，显然需要对一些CT扫描仪的方案进行优化。
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