双轴旋转冠脉造影术与常规冠状动脉造影术的临床应用效果及辐射剂量比较

目的：比较双轴旋转冠脉造影(XperSwing)术与常规冠状动脉造影（CCA）术的临床应用效果和辐射剂量，评价2种冠脉造影技术的差异性及临床价值。方法：收集行临床冠脉造影检查患者30例，其中CCA组20例，XperSwing组10例，分析2组患者检查的透视时间、对比剂用量和图像质量评分。应用中国人仿真胸部体模模拟XperSwing技术及CCA检查环境，将热释光个人剂量计（TLD）布放于仿真胸部体模的主要组织器官，测量各组织器官的吸收剂量，计算2种冠脉造影技术的有效剂量。结果：与CCA组比较，XperSwing组患者的对比剂用量减少27.74%（P<0.05），透视时间和图像质量评分差异无统计学意义（P>0.05）；XperSwing组仿真胸部体模各组织器官平均吸收剂量低于CCA组（P<0.05）；XperSwing组有效剂量（4.94 mSv）低于CCA组（5.57 mSv）。结论：XperSwing　术可满足冠脉造影图像质量要求，并可有效降低冠脉造影的对比剂用量和辐射剂量。
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Comparisons of clinical application effect and radiation dose for dual axis rotational coronary angiography and conventional coronary angiography technique

Abstract:Objective To compare the clinical application effect and radiation dose of dual axis rotational coronary angiography (XperSwing) and conventional coronary angiography(CCA) technique, and to evaluate the differences and clinical values of two kinds of coronary angiography technique.Methods 30 cases induding 20 cases of CCA group and 10 cases of XperSwing group under went coronary angiography were
collected in clinic; the fluoroscope time, contrast agent usage and the score of image quality of the patients in two groups were analyzed. Using the Chinese anthropomorphic chest phantom, the virtual surgical environment of XperSwing and CCA was simulated. The thermoluminescent dosimeters(TLD) were placed on its major organs,and the absorbed doses of different organs were measured and the effective doses were computed. Results Compared with CCA group, the contrast agent usage was decrea
sed by 27.74%(P<0.05),and the fluoroscope time and the score of image quality in XperSwing group had no significant difference(P>0.05). The mean radiation dose in XperSwing group was lower than that in CCA group (P<0.05). The effective dose in XperSwing group(4.94 mSv) was lower than that in CCA group(5.57 mSv). Conclusion XperSwing technique can fulfill the image quality requirement and effectively reduce the contrast agent usage and radiation doseof coronary angiography.
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