T-SLIP肾动脉非对比增强成像的可重复性研究及不同位置标记脉冲的比较
发布时间：2019-03-29 20:00
【摘要】：目的： 探讨使用时间-空间标记反转脉冲（T-SLIP）的肾动脉非对比增强成像可重复性，并比较不同位置标记脉冲显示肾动脉及其分支的能力。 材料与方法： 本研究纳入36名年轻健康志愿者，使用1.5T磁共振两次行肾动脉非对比增强成像，平均前后间隔时间约1周。其中男性16人、女性20人，平均年龄21.9岁。由两位观察者根据以下五个参数进行独立分析：血管-肾脏信号比（vessel-to-kidney ratio，VKR）、肾动脉分支级数、图像质量评分、肾动脉主干直径与面积，，并记录相关数据。使用Bland-Altman分析、组内相关系数和组间相关系数评价可重复性。使用Wilcoxon符号检验对标记脉冲定位于双肾上极和定位于肾动脉开口处的图像进行比较。 结果： 所有志愿者均配合检查，所有数据均适合进行分析评价。全部36名志愿者中，4名有单侧双肾动脉，选择管径较大一支分析；3名志愿者有单侧副肾动脉，未纳入分析。两次检查VKR可重复性差。肾动脉非对比增强成像显示肾动脉平均分级至少为3.83；第一段（肾动脉主干）图像质量评分均为优，第二段（肾门区动脉）和第三段（肾实质内动脉）大部分图像能满足诊断。两次检查肾动脉三段图像质量评分均有良好的组内及组间一致性，最小值为0.768。肾动脉主干直径与面积的组内和组间ICC从0.781至0.934。不同标记脉冲位置，肾动脉分支级数和第三段动脉图像质量评分均有显著性差异（p0.05），而VKR、第一段和第二段动脉图像质量无显著性差异。 结论： T-SLIP肾动脉非对比增强成像图像质量好，可重复性高。与标记脉冲定位于双肾上极相比，定位于肾动脉开口处能更好地显示肾动脉分支。
[Abstract]:Aim: to investigate the repeatability of non-contrast enhanced renal artery imaging using temporal-spatial marker reversal pulse (T-SLIP), and to compare the ability of displaying renal artery and its branches with different location-labeled pulses. Materials and methods: thirty-six young healthy volunteers were enrolled in this study. Non-contrast enhanced renal artery imaging was performed twice with 1.5T MRI. The average anterior-posterior interval was about 1 week. There were 16 males and 20 females, with an average age of 21.9 years. Independent analysis was performed by two observers according to the following five parameters: blood vessel-kidney signal ratio (vessel-to-kidney ratio,VKR), renal artery branch grade, image quality score, diameter and area of the renal artery trunk, and the related data were recorded. The intra-group correlation coefficient and the inter-group correlation coefficient can be evaluated repeatably by Bland-Altman analysis. Wilcoxon symbol test was used to compare the images of labeled pulses located at the upper renal pole and at the opening of the renal artery. Results: all volunteers cooperated with the examination and all the data were suitable for analysis and evaluation. Of all 36 volunteers, 4 had unilateral bilateral renal artery, and 3 volunteers had unilateral accessory renal artery, which were not included in the analysis. The repeatability of VKR was poor in two tests. The average grade of renal artery was at least 3.83 on non-contrast enhanced imaging of renal artery. The image quality scores of the first segment (main renal artery) were excellent, and most of the images of the second segment (renal hilar artery) and third segment (intrarenal artery) could satisfy the diagnosis. There was good intra-and inter-group consistency in the image quality score of the three segments of renal artery in the two examinations, the minimum value was 0.768. The intra-and inter-group ICC of the renal artery trunk diameter and area ranged from 0.781 to 0.934. There was significant difference in the grade of branches of renal artery and the image quality score of the third segment of the renal artery (p0.05), but there was no significant difference in the image quality of the first and second segments of VKR, between the two groups. Conclusion: non-contrast enhanced T-SLIP images of renal artery are of good quality and reproducibility. The location of the renal artery at the opening of the renal artery is better than the location of the labeled pulse in the upper pole of both kidneys.
【学位授予单位】：福建医科大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：R445.2
本文编号：2449842
[Abstract]:Aim: to investigate the repeatability of non-contrast enhanced renal artery imaging using temporal-spatial marker reversal pulse (T-SLIP), and to compare the ability of displaying renal artery and its branches with different location-labeled pulses. Materials and methods: thirty-six young healthy volunteers were enrolled in this study. Non-contrast enhanced renal artery imaging was performed twice with 1.5T MRI. The average anterior-posterior interval was about 1 week. There were 16 males and 20 females, with an average age of 21.9 years. Independent analysis was performed by two observers according to the following five parameters: blood vessel-kidney signal ratio (vessel-to-kidney ratio,VKR), renal artery branch grade, image quality score, diameter and area of the renal artery trunk, and the related data were recorded. The intra-group correlation coefficient and the inter-group correlation coefficient can be evaluated repeatably by Bland-Altman analysis. Wilcoxon symbol test was used to compare the images of labeled pulses located at the upper renal pole and at the opening of the renal artery. Results: all volunteers cooperated with the examination and all the data were suitable for analysis and evaluation. Of all 36 volunteers, 4 had unilateral bilateral renal artery, and 3 volunteers had unilateral accessory renal artery, which were not included in the analysis. The repeatability of VKR was poor in two tests. The average grade of renal artery was at least 3.83 on non-contrast enhanced imaging of renal artery. The image quality scores of the first segment (main renal artery) were excellent, and most of the images of the second segment (renal hilar artery) and third segment (intrarenal artery) could satisfy the diagnosis. There was good intra-and inter-group consistency in the image quality score of the three segments of renal artery in the two examinations, the minimum value was 0.768. The intra-and inter-group ICC of the renal artery trunk diameter and area ranged from 0.781 to 0.934. There was significant difference in the grade of branches of renal artery and the image quality score of the third segment of the renal artery (p0.05), but there was no significant difference in the image quality of the first and second segments of VKR, between the two groups. Conclusion: non-contrast enhanced T-SLIP images of renal artery are of good quality and reproducibility. The location of the renal artery at the opening of the renal artery is better than the location of the labeled pulse in the upper pole of both kidneys.
【学位授予单位】：福建医科大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：R445.2
【参考文献】
相关期刊论文 前1条
1 张晓东;李建初;;超声诊断肾动脉狭窄的研究进展[J];中华医学超声杂志(电子版);2013年03期
本文编号：2449842
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