Revolution CT 70 kVp低管电压联合等渗碘对比剂在头颈心“一站式”CTA中的应用价值  

Application Value of Revolution CT 70 kVp Low-Tube Voltage Combined with Isotonic Iodine Contrast Agent in“One-Stop”CTA of Head,Neck and Heart

作　　者：刘盼 邓建涛 严静 马婷 范小萍[1] 李勇 严高武 陈洪[1] LIU Pan;DENG Jiantao;YAN Jing;MA Ting;FAN Xiaoping;LI Yong;YAN Gaowu;CHEN Hong(Department of Radiology,Suining Central Hospital,Suining Sichuan 629000,China)

机构地区：[1]遂宁市中心医院放射影像科,四川遂宁629000

出　　处：《中国医疗设备》2024年第4期130-136,共7页China Medical Devices

基　　金：四川省卫生健康委员会科研课题(19PJ284,20PJ284);遂宁市中心医院科研课题(2021y09)。

摘　　要：目的探讨Revolution CT 70 kVp低管电压联合等渗碘对比剂(碘克沙醇320 mgI/mL)在头颈心“一站式”CT血管成像(Computed Tomography Angiography,CTA)中的应用价值。方法前瞻性收集我院2022年8月至2023年4月行头颈心“一站式”CTA的患者50例,并按随机数字表法分为A、B两组,各25例。A组管电压70 kVp,碘克沙醇320 mgI/mL;B组管电压100 kVp,碘美普尔400 mgI/mL,对比剂剂量均按0.7 mL/kg计算。比较两组患者图像质量的客观评价和主观评分指标、辐射剂量和摄碘量。结果A组冠状动脉主干及分支血管、头颈部动脉的平均CT值和SD值均高于B组,差异具有统计学意义(P<0.05);但A组图像的信噪比及对比噪声比与B组相比,差异无统计学意义(P>0.05)。A、B两组冠状动脉CTA和头颈部CTA的图像质量差异均无统计学意义(P>0.05);两名医师对冠状动脉和头颈部血管图像质量的主观评分一致性好(分别为0.839、0.719和0.762、0.749)。与B组相比,A组冠状动脉CTA的有效辐射剂量(Effective Dose,ED)降低约68.68%,头颈部CTA的ED降低约65.75%,患者摄碘量降低约21.23%(均P<0.001)。结论Revolution CT 70 kVp低管电压联合等渗碘对比剂在中老年患者头颈心“一站式”CTA中具有较好的应用价值,能显著降低辐射剂量和摄碘量。Objective To explore the application value of Revolution CT 70 kVp low-tube voltage combined with isotonic iodine contrast agent(iodixanol 320 mgI/mL)in“one-stop”computed tomography angiography(CTA)of head,neck and heart.Methods A total of 50 patients who underwent“one-stop”CTA of head,neck and heart in our hospital from August 2022 to April 2023 were prospectively collected and divided into group A and group B according to random number table,with 25 patients in each group.In group A,the tube voltage was 70 kVp,and iodixanol was 320 mgI/mL;in group B,the tube voltage was 100 kVp,iomeprol was 400 mgI/mL,and the comparator dose was calculated as 0.7 mL/kg.The objective and subjective scoring indexes of image quality as well as the radiation dose and iodine intake were compared between the two groups.Results The average CT and SD values of coronary artery trunk and its branches and head and neck arteries in group A were higher than those in group B,and the differences was statistically significant(P<0.05).However,there was no statistically significant difference in the signal to noise ratio and contrast to noise ratio between group A and group B(P>0.05).There was no significant difference in the image quality of coronary artery CTA and head and neck CTA between group A and group B(P>0.05).The subjective scores of both physicians for image quality of coronary artery and head and neck vessels were consistent(0.839,0.719 and 0.762,0.749,respectively).Compared with group B,the effective dose(ED)of coronary CTA in group A was reduced by 68.68%,and the ED of CTA in head and neck in group A was reduced by 65.75%,and the iodine intake of the patients in group A was reduced by 21.23%(all P<0.001).Conclusion Revolution CT 70 kVp low-tube voltage combined with isotonic iodine contrast agent has a good application value in the“one-stop”CTA of head,neck and heart of middle-aged and elderly patients,which can obviously reduce the radiation dose and iodine intake.

关 键 词：低管电压 等渗碘对比剂 CT血管成像 图像质量 辐射剂量 

分 类 号：R445.3[医药卫生—影像医学与核医学]