新型国产DSA设备易用性和辐射剂量分析

New-type domestic DSA equipment: analysis of its ease-of-use and radiation dose

目的 探究新型国产低剂量DSA造影设备剂量降低技术的临床应用效果,为国产DSA设备改进提供参考。方法 选择接受择期脑血管造影患者并基于其体质量指数配对,配对成功后随机分配到试验组(联影uAngio)和对照组(西门子Axiom Zee Biplane)。评价术中图像质量和设备各操控性能,记录设备的剂量-面积乘积(DAP)率、空气比释动能率(K值率)。测定介入放射治疗过程中患者各测量点辐射剂量。综合评估联影uAngio剂量降低技术的临床应用效果。结果 国产DSA设备联影uAngio图像质量与西门子Axiom Zee Biplane无显著差异,多项操控性能显著优于西门子Axiom Zee Biplane。联影uAngio的DAP率显著低于西门子Axiom Zee Biplane(P=0.001)。两组患者各测量点辐射剂量无显著差异。结论 与西门子Axiom Zee Biplane相比,国产DSA设备联影uAngio在具备相似水准图像质量和更加良好的操作易用性前提下,其DAP率更低。

Objective To explore the clinical effect of dose reduction technique of a new-type domestic low-dose digital subtraction angiography(DSA)device(United Imaging uAngio),and to provide reference for the improvement of domestic DSA device.Methods Patients who underwent selective cerebrovascular angiography were selected and were pair-matched according to their body mass index(BMI).After matching success,the patients were randomly assigned to study group(using United Imaging uAngio device)and control group(using Siemens Axiom Zee Biplane device).Both the image quality and the handling performance of each equipment were evaluated during the operation.Dose-area product(DAP)and air kerma rate(K value rate)were recorded.The radiation dose at each measurement point during interventional radiotherapy was determined.The clinical application effect of dose-reduction technique of United Imaging uAngio device was comprehensively evaluated.Results There was no significant difference in image quality between United Imaging uAngio and Siemens Axiom Zee Biplane.United Imaging uAngio's multiple handling performance was significantly better than Siemens Axiom Zee Biplane.DAP rate of United Imaging uAngio was significantly lower than that of Siemens Axiom Zee Biplane(P-0.001).No statistically significant difference in patient's radiation dose at each measurement point existed between the two groups.Conclusion Compared with imported DSA device Axiom Zee Biplane,the domestic United Imaging uAngio device has lower DAP rate while providing similar image quality and better ease-of-use.