【摘要】：目的： 探討使用時(shí)間-空間標(biāo)記反轉(zhuǎn)脈沖（T-SLIP）的腎動(dòng)脈非對(duì)比增強(qiáng)成像可重復(fù)性，并比較不同位置標(biāo)記脈沖顯示腎動(dòng)脈及其分支的能力。 材料與方法： 本研究納入36名年輕健康志愿者，使用1.5T磁共振兩次行腎動(dòng)脈非對(duì)比增強(qiáng)成像，平均前后間隔時(shí)間約1周。其中男性16人、女性20人，平均年齡21.9歲。由兩位觀察者根據(jù)以下五個(gè)參數(shù)進(jìn)行獨(dú)立分析：血管-腎臟信號(hào)比（vessel-to-kidney ratio，VKR）、腎動(dòng)脈分支級(jí)數(shù)、圖像質(zhì)量評(píng)分、腎動(dòng)脈主干直徑與面積，，并記錄相關(guān)數(shù)據(jù)。使用Bland-Altman分析、組內(nèi)相關(guān)系數(shù)和組間相關(guān)系數(shù)評(píng)價(jià)可重復(fù)性。使用Wilcoxon符號(hào)檢驗(yàn)對(duì)標(biāo)記脈沖定位于雙腎上極和定位于腎動(dòng)脈開(kāi)口處的圖像進(jìn)行比較。 結(jié)果： 所有志愿者均配合檢查，所有數(shù)據(jù)均適合進(jìn)行分析評(píng)價(jià)。全部36名志愿者中，4名有單側(cè)雙腎動(dòng)脈，選擇管徑較大一支分析；3名志愿者有單側(cè)副腎動(dòng)脈，未納入分析。兩次檢查VKR可重復(fù)性差。腎動(dòng)脈非對(duì)比增強(qiáng)成像顯示腎動(dòng)脈平均分級(jí)至少為3.83；第一段（腎動(dòng)脈主干）圖像質(zhì)量評(píng)分均為優(yōu)，第二段（腎門(mén)區(qū)動(dòng)脈）和第三段（腎實(shí)質(zhì)內(nèi)動(dòng)脈）大部分圖像能滿足診斷。兩次檢查腎動(dòng)脈三段圖像質(zhì)量評(píng)分均有良好的組內(nèi)及組間一致性，最小值為0.768。腎動(dòng)脈主干直徑與面積的組內(nèi)和組間ICC從0.781至0.934。不同標(biāo)記脈沖位置，腎動(dòng)脈分支級(jí)數(shù)和第三段動(dòng)脈圖像質(zhì)量評(píng)分均有顯著性差異（p0.05），而VKR、第一段和第二段動(dòng)脈圖像質(zhì)量無(wú)顯著性差異。 結(jié)論： T-SLIP腎動(dòng)脈非對(duì)比增強(qiáng)成像圖像質(zhì)量好，可重復(fù)性高。與標(biāo)記脈沖定位于雙腎上極相比，定位于腎動(dòng)脈開(kāi)口處能更好地顯示腎動(dòng)脈分支。
[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.
【學(xué)位授予單位】：福建醫(yī)科大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：R445.2

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相關(guān)期刊論文 前1條

1 張曉東;李建初;;超聲診斷腎動(dòng)脈狹窄的研究進(jìn)展[J];中華醫(yī)學(xué)超聲雜志(電子版);2013年03期

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