两种注射方法对不同年龄段肾动态显像GFR准确性的影响  

Effect of Two Injection Methods for Dynamic Imaging Kidney GFR Accuracyin Different Ages

作　　者：张莉[1] 

机构地区：[1]泸州医学院附属医院核医学科,四川泸州646000

出　　处：《四川医学》2014年第12期1612-1614,共3页Sichuan Medical Journal

摘　　要：目的探讨预埋留置针法(简称"预埋法")和袖带法对不同年龄段肾动态显像中肾小球滤过率(GFR)准确性的影响。方法按年龄将50例行肾动态显像的患者分为两组。组1:年龄<60岁,20例;组2:年龄>60岁,30例。所有患者均于第1d行预埋法,隔天再行袖带法注射。通过Gates法获得血流灌注图像、灌注峰值和GFR值。结果组1:预埋法形成"弹丸"的成功率为100%,袖带法为95.0%(19/20);二者所形成的腹主动脉峰值及GFR值之间的差异无统计学意义(P>0.05);注射部位残留放射性计数之间的差异有统计学意义(P<0.05)。组2:预埋法形成"弹丸"的成功率为100%,袖带法为80.0%(24/30);二者形成的腹主动脉峰值、GFR、注射部位残留放射性计数值间的差异有统计学意义(P<0.05)。结论预埋法"弹丸"注射能有效地减少注射部位的放射性残留,提高GFR的准确性,能更真实地反映肾功能受损情况,尤其适用于年龄大于60岁的老年人群。Objective To evaluate the effect of indwelling needle embedded in advance（it’s short for embedded in ad-vance method） and cuff method to the accuracy of GFR in dynamic renography in different ages. Methods 50 patients who were divided into 2 groups underwent dynamic renography. Group1 contained 20 patients whom age were less than 60. Group 2 contained 30 patients whom age were more than 60. All patients underwent twice dynamic renography： the first day was embedded in advance method,the third day was cuff method. All blood flow phase,the peak of blood flow and GFR were obtained by Gates method. Re-sults Group1： the success rate of “bolus” between the two methods were 100% and 95% respectively. With the peak of blood flow and GFR,there were no significant difference between the two methods. With the residual radioactivity at injection site,there was significant difference. Group2： the success rate of “bolus” between the two methods were 100% and 80% respectively. With the peak of blood flow,GFR and the residual radioactivity at injection,there were significant difference. Conclusion Indwelling needle embedded in advance can improve the accuracy of GFR effectively,so it also can reflect the reality of renal function.

关 键 词：肾动态显像 肾小球滤过率 留置针 袖带法 

分 类 号：R817.4[医药卫生—影像医学与核医学]