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1 result(s) for "疾病严重程度指数"
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双能量CT肺灌注成像评价急性肺栓塞严重程度的可行性研究
目的分析双源CT双能量肺灌注成像(DEPI)技术评价急性肺动脉栓塞(APE)严重程度的可行性。方法经双源CT诊断APE24例,采用Lung PBV软件进行数据处理,得到CT肺血管图像(CTPA)和DEPI,分别计算每位患者的灌注缺损指数、栓塞指数及双室短轴最大径比(RV/LV),依据患者严重程度分为严重APE组(n=9)和非严重APE组(n=15),比较两组灌注缺损指数、栓塞指数及RV/LV,并进行Spearman等级相关分析。结果严重APE组的灌注缺损指数、栓塞指数及RV/LV中位数分别为32.5%(15.0%62.5%)、45.0%(27.5%75.0%)和1.16(1.041.45),而非严重APE组分别为12.5%(0%37.5%)、12.5%(2.5%42.5%)和1.03(0.851.41),严重APE组的各项指标均高于非严重组,两组间差异有统计学意义(P〈0.05)。相关分析显示,灌注缺损指数与RV/LV及栓塞指数均呈正相关(分别为r=0.635,P〈0.05;r=0.790,P〈0.05)。结论采用双源CT双能量肺灌注成像技术评价APE严重程度具有一定可行性。