多层螺旋CT血管成像对肾动脉狭窄的应用及评价研究(2)
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随着肾动脉狭窄程度不同其临床意义有很大差别,肾动脉狭窄达50%时,局部血流动力学发生紊乱,狭窄部位可测得压力梯度,但不引起临床症状[4]。当肾动脉重度狭窄时,临床出现高血压或缺血性肾病。因此肾动脉狭窄程度不同临床意义有很大不同,肾动脉重度狭窄,临床意义重大,是治疗的指征[5]。本组重度肾动脉狭窄20例,诊断准确率100%。所以,MSCTA对肾动脉狭窄有较高的诊断价值,可以作为肾动脉狭窄筛查的首选方法。
参考文献
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