The aim of this study was to estimate the effect of tube voltage on the scattered dose in a computed tomography (CT) room. To this end, we conducted experiments using anthropomorphic phantoms and a CT scanner at different tube voltages during CT. The scattered dose was measured using an electronic pocket dosemeter at 50-cm intervals from the centre of the gantry. The structure of the CT room was measured at 57 points (28 points in the front of the gantry (on the bed side), 6 points on the side of the gantry and 23 points behind the gantry) to be up to 200 cm. We compared the scattered dose distributions between 80 and 120 kVp at heights of 50, 100 and 150 cm above the floor surface. The scattered dose was reduced by ~30% when the tube voltage was reduced from 120 to 80 kVp.

中文翻译：

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较低管电压扫描的实用性可减少计算机断层扫描室内医护人员对散射辐射的暴露。

本研究的目的是评估计算机断层扫描 (CT) 室中管电压对散射剂量的影响。为此，我们在CT过程中使用拟人体模和不同管电压的CT扫描仪进行了实验。使用电子袖珍剂量计以距机架中心 50 厘米的间隔测量散射剂量。对CT室结构进行了57个点的测量（机架前面（床侧）28个点，机架侧面6个点，机架后面23个点），最高可达200​​厘米。我们比较了距离地板表面 50、100 和 150 厘米高度处 80 和 120 kVp 之间的散射剂量分布。当管电压从 120 kVp 降低至 80 kVp 时，散射剂量减少约 30%。