摘要
目的评价双源CT(DSCT)一站式扫描对急性肺栓塞(PE)及深静脉血栓(DVT)的诊断价值。方法采用DSCT对56例临床疑诊急性PE患者先行肺动脉成像(CTPA),间隔120～180s后再行深静脉成像(CTV)。利用MPR和MIP观察PE和DVT分布情况。56例中,12例于CTPA检查发现PE后接受DSA检查。以血管节段为单位,记录双源CT和DSA对PE和DVT的诊断结果,并与DSA检查结果进行比较。结果 12例PE患者中发现DVT 11例,CTPA对肺段及亚段动脉PE的检出率明显高于DSA(χ2=8.34、92.65,P均<0.01),对肺叶动脉及以上级别血管PE的检出率与DSA差异无统计学意义(P均>0.05)。CTV对DVT的检出率与DSA相比差异无统计学意义(χ2=0.667,P=0.414)。以DSA为金标准,CTV评价DVT的敏感度、特异度、准确率分别为92.16%(47/51)、96.49%(55/57)、94.44%(102/108)。结论双源CT一站式扫描可同时准确地诊断急性PE及DVT。
Objective To observe the diagnostic value of dual-source CT（DSCT） combined scan in acute pulmonary embolism（PE） and deep venous thrombosis（DVT）.Methods CT pulmonary angiography（CTPA） was firstly performed on 56 patients with suspect PE,then CT venography（CTV） was subsequently performed with delayed time at 120 to 180 s after contrast medium administrated.The distribution of PE and DVT were detected on postprocessed images including MPR and MIP.Twelve patients underwent digital subtraction angiography（DSA） followed the detection of PE by CTPA.PE and DVT were recorded according to vessel segment,and results of CTPA and CTV were compared with those of DSA.Results DVT was found in 11 of 12 PE patients.There was no statistical difference for detection of PE in lobar or larger vessel between CTPA and DSA（all P0.05）,but CTPA had more higher detection rate than DSA in segment or sub-segment PE（χ2=8.34,92.65,both P0.01）.No statistical difference was found in detection of DVT between CTV and DSA（χ2=0.667,P=0.414）.Taking DSA as golden standard,the sensitivity,specificity and accuracy of CTV in diagnosing DVT was 92.16%（47/51）,96.49%（55/57） and 94.44%（102/108）,respectively.Conclusion The combined scan of DSCT can accurately assess PE and DVT.
出处
《中国医学影像技术》
CSCD
北大核心
2011年第12期2476-2479,共4页
Chinese Journal of Medical Imaging Technology
基金
贵州省卫生厅基金(gzwkj2009-1-004)
