双源CT双能量碘图评价主动脉病变肾灌注水平

发布时间：2018-11-17 20:59

【摘要】：目的:探讨双源CT双能量成像碘图评价主动脉病变患者肾灌注水平的临床应用价值。方法:10例主动脉病变患者行CT血管成像(CTA)后行双能量扫描,应用Liver VNC程序,重建肾灌注碘图,测量双肾实质正常灌注及低灌注感兴趣区的CT值、碘浓度、对比增强率及脂肪分类。结果:10例受检者CTA共扫描20侧肾脏,其中6侧灌注异常减低。双能量碘图检查结果与CTA一致;肾脏低灌注区的碘浓度和对比增强率低于对照侧,差异有统计学意义(t=5.08,P0.05;t=4.16,P0.05);0.5融合图像低灌注区CT值低于对照侧,差异有统计学意义(t=6.20,P0.05);肾低灌注区与对照侧的脂肪分类差异无统计学意义(t=1.94,P=0.08)。结论:应用双能量碘图可直观显示肾灌注水平,测量感兴趣区CT值、碘浓度和对比增强率等定量指标可反映肾灌注水平,与CTA联合应用有助于准确评价主动脉病变患者的肾灌注水平。
[Abstract]:Objective: to evaluate the clinical value of dual source CT dual energy imaging iodine imaging in evaluating renal perfusion in patients with aortic disease. Methods: ten patients with aortic lesions underwent double energy scanning after CT angiography (CTA). The renal perfusion iodine graph was reconstructed by Liver VNC program. The CT value and iodine concentration in the normal perfusion and low perfusion region of interest were measured in both renal parenchyma and renal parenchyma. Contrast enhancement rate and fat classification. Results: 20 kidneys were scanned by CTA in 10 patients, 6 of them had abnormal perfusion. The iodine concentration and contrast enhancement rate in the low perfusion area of kidney were lower than those in the control side, the difference was statistically significant (t = 5.08, P 0.05, P < 0.05, P < 0.05), and the contrast enhancement rate was significantly lower than that in the control side (P < 0.05). 0.5 the CT value in low perfusion area of fusion image was lower than that in control side, the difference was statistically significant (t = 6.20 P 0.05), but there was no significant difference in fat classification between low perfusion area of kidney and control side (t = 1.94). Conclusion: the renal perfusion level can be visualized by using dual energy iodine graph. The quantitative indexes such as CT value, iodine concentration and contrast enhancement rate can reflect the renal perfusion level. Combination with CTA is helpful for accurate evaluation of renal perfusion in patients with aortic disease.
【作者单位】：深圳市孙逸仙心血管医院放射科;
【基金】：深圳市龙岗区科技研发资金资助项目(ys2012142)
【分类号】：R543.1;R816.2

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