多层螺旋CT血管造影术诊断动脉粥样硬化性肾动脉狭窄的价值

Evaluation of atherosclerotic renal artery stenosis by multi-slice CT angiography

    摘要
  • 摘要:
    目的 探讨多层螺旋CT血管造影（MSCTA）诊断动脉粥样硬化性肾动脉狭窄（ARAS）的必要性和可靠性。
    方法 选取82例曾做过数字减影血管造影（DSA）的ARAS患者行肾动脉MSCTA，将所获得的图像数据进行多平面重建、最大密度投影法重建、容积重建和表面阴影遮盖法重建，将结果与DSA进行对比分析。
    结果 ① MSCTA发现狭窄血管95支，其中85支经DSA证实（10支为假阳性），符合率为89%，假阳性率为6.1%。②密度投影法重建+容积重建显示狭窄血管率达到100%。
    结论 MSCTA是筛选ARAS的可靠方法。

     

    Abstract:
    Objective To study the reliability and necessity of multi-spiral computed tomography angiography(MSCTA)for non-invasive examination of patients with atherosclerotic renal artery stenosis (ARAS).
    Method Eighty-two ARAS patients who had taken intraarterial digital subtraction angiography were performed with MSCTA.The obtained image data were analyzed in MPR, MIP, VR and SSD with multi-spiral CT at certain condition and were compared with digital substrction angiography(DSA)images.
    Results ① MSCTA visualized 95 renal artery stenosis on DSA, 85 of which were detected coordinate(10 were falsepositive cases).The concordance rate of DSA and MSCTA was 89%, and the false positive rate was 6.1%.②The intensity projection reconstruction and volume reconstruction perfectly showed stenosis.
    Conclusion MSCTA is helpful to accurately display the renal artery variation and lesions, and is also a reliable and accurate screening modality for the evaluation of patients with ARAS.

     

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