Time-SLIP非对比增强肾动脉成像技术的可重复性研究

发布时间：2018-01-21 03:12

本文关键词： 非对比增强磁共振血管成像时间-空间标记反转脉冲肾动脉可重复性　出处：《临床放射学杂志》2015年07期 　论文类型：期刊论文

【摘要】：目的探讨时间-空间标记反转脉冲(Time-SLIP)非对比增强成像技术对正常肾动脉主干和分支显示的可重复性。方法 36名健康志愿者(男16名、女20名,平均年龄21.9岁)均行2次1.5 T Time-SLIP非对比增强肾动脉检查,前后间隔时间约为1~2周。记录前后2次血管-肾脏信号比(VKR)、肾动脉分支级数、图像质量评分、肾动脉主干直径与面积等五个参数,使用Bland-Altman法、测量者组内相关系数(ICC)和测量者间ICC评价可重复性。结果 2名测察者肾动脉分级的ICC分别为0.820和0.908。肾动脉第一段(动脉主干)图像质量评分测量者ICC和测量者间ICC均为1,第二段(肾门区动脉)和第三段(肾实质内动脉)图像质量评分ICC介于0.768~1之间,测量者间ICC介于0.864~0.969之间。双侧肾动脉主干直径和面积的95%LOA介于2.8%~5.6%之间,最小ICC值为0.795,2名测察者间的最小ICC值为0.839。两次检查VKR的95%LOA分别为75%和72.2%,测量者ICC分别为0.510和0.577。结论 Time-SLIP非对比增强成像技术对正常肾动脉主干及其分支的显示具有很高可重复性,在肾动脉病变、肾移植前筛查、肾移植后疗效评估和随访等方面具有重要的意义。
[Abstract]:Objective to investigate the reproducibility of the display of normal renal artery trunk and branches by time-space labeled time-SLIP-based non-contrast enhanced imaging. Methods 36 healthy volunteers were enrolled in this study. 16 men. 20 women (mean age 21.9 years) underwent 1.5T Time-SLIP contrast enhanced renal artery examination twice. The interval was about 1 ~ 2 weeks. The VKR ratio, the grade of renal artery branches, the image quality score, the diameter and the area of the main renal artery were recorded. Bland-Altman method is used. Results the ICC of renal artery grading in two subjects were 0.820 and 0.908, respectively. The ICC of the patients with image quality score was 1. The image quality scores of the second segment (the hilar artery) and the third segment (the internal renal parenchyma) were between 0.768 and 1. The ICC was between 0.864 and 0.969, the diameter and area of bilateral renal artery was 95 loa was between 2.8% and 5.6%, and the minimum ICC was 0.795. The minimum value of ICC was 0.8399.The 95 loa of VKR was 75% and 72.2% respectively. The ICC was 0.510 and 0.577.Conclusion the display of normal renal artery trunk and its branches by non-contrast enhanced Time-SLIP imaging is highly reproducible. It has important significance in renal artery disease, pre-transplantation screening, evaluation and follow-up of renal transplantation.
【作者单位】：福建医科大学附属第一医院影像科;福建医科大学医学技术与工程学院;
【基金】：福建医科大学大学生创新性项目(编号:201310392019)
【分类号】：R445.2;R692
【正文快照】： 本研究为福建医科大学大学生创新性项目(编号:201310392019)0.820 and 0.908 for two observers respectively.The ICC of Segment I(the main trunk of renal artery)for inter and intraobservers were all equal to 1.000.The ICC of SegmentⅡ(segmental branches pre ren

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