Department of Diagnostic and Interventional Radiology, J.W Goethe- University hospital, Theodor-Stern-Kai 7, 60590, Frankfurt/ Main, Germany,
Eur Radiol. 2013 Dec;23(12):3262-70. doi: 10.1007/s00330-013-2939-2. Epub 2013 Jun 29.
To evaluate the radiation dose received by procedural personnel and patients from an X-ray volume imaging (XVI) system during interventional procedures.
Forty patients were examined using catheter angiography (group A), digital subtraction angiography (group B) and cone-beam CT (CBCT, group C). Doses to procedural personnel (using thermo-luminescent dosimeters, TLDs) and patients were estimated. Image quality and lesion delineation were assessed using objective and subjective methods. Shapiro-Wilk, two-sided Student's t and Wilcoxon matched-pairs tests were used to test statistical significance.
Doses (milligrays) measured in the hands and left knee of the interventionist were higher than those in an assistant physician (P < 0.05). Doses (dose-area product and skin entry dose) were lower in group A and higher in C compared with other groups; moreover, comparison among the groups were significant (all P = 0.0001). Subjective and objective lesion delineation showed significant results (all P < 0.05) among the tumour types considered. Image quality estimation showed the opposite results for objective and subjective analysis.
More doses were obtained for hands of the procedural personnel compared to other anatomical regions measured. Catheter angiography showed lower dose compared with other imaging groups examined. Lesion delineation was clearly possible using CBCT. Objective and subjective analysis showed the opposite results regarding image quality because of higher noise levels and artefacts.
评估介入手术中使用 X 射线容积成像（XVI）系统时，操作人员和患者所接受的辐射剂量。
使用导管血管造影（A 组）、数字减影血管造影（B 组）和锥形束 CT（CBCT，C 组）对 40 名患者进行了检查。使用热释光剂量计（TLD）估计了操作人员（医生和助手）和患者的剂量。使用客观和主观方法评估了图像质量和病变勾画。使用 Shapiro-Wilk、双侧学生 t 检验和 Wilcoxon 配对检验来检验统计显著性。
介入医师手部和左膝处的剂量（毫戈瑞）高于助理医师（P<0.05）。与其他组相比，A 组的剂量（剂量面积乘积和皮肤入射剂量）较低，而 C 组的剂量较高；此外，组间比较差异有统计学意义（均 P=0.0001）。对考虑的肿瘤类型进行主观和客观的病变勾画显示出显著的结果（均 P<0.05）。图像质量评估在客观和主观分析中显示出相反的结果。
与其他测量的解剖区域相比，操作人员手部的剂量更高。与其他成像组相比，导管血管造影的剂量更低。使用 CBCT 可以清晰地勾画病变。客观和主观分析在图像质量方面显示出相反的结果，这是因为噪声水平和伪影较高。
