螺旋CT双期动态扫描在小肝癌诊断中的价值

Evaluationofdual┐phasehelicaldynamicCTinthediagnosisofsmalHCC

目的：应用螺旋ＣＴ行肝动脉期和门静脉期双期全肝动态扫描，比较二期的病灶检出率并和超声进行检出敏感性和定性准确性的比较研究。材料和方法：４９例小肝癌患者行螺旋ＣＴ双期全肝动态扫描后，统计各期病灶的检出数，观察病灶强化方式，计算检出敏感性并行统计学处理。结果：４９例共发现病灶５３个，肝动脉期、门静脉期及双期合计的检出敏感性分别为：８８．６８％、７１．７０％、９０．５７％，双期扫描和超声（６７．９２％）比较有显著性差异，其定性准确性（９５．８３％）也明显高于超声（８０．５６％）。结论：螺旋ＣＴ双期动态扫描可充分反映小肝癌的血供特点，明显提高小肝癌的检出敏感性。

Purpose:ThearterialphasescanandportalvenousphasescanwereperformedwithhelicalCTtocomparethesensitivityandaccuracyofdetectionofSHCCineachandbothphasesandascomparedwithUS.Materialandmethods:Dual-phasedynamicscanningoftheliverin49patientswithSHCC(≤3.0cm)wascarriedoutwithahelicalCTscanner.Thenumberofthedetectedlesionsanditssensitivitywerestatisticalycalculatedandanalysedineachphaseandthepaternofenhance-mentobserved.Results:Thestudyshowedthatthesensitivityindetectinglesionsinarterial,portalanddualphaseswererespectively88.68%,71.70%and90.57%.Significantdiferencewasfoundbetweendual-phasehelicaldynamicCTandUS(67.92%).Thesignificantdiferenceoftheaccuracyofcharacterizationwasalsofoundbetweendual-phaseCTscans(95.83%)andUS(80.56%).Con-clusion:Itwasobviousthatdual-phasehelicaldynamicCTcouldfulyreflectthebloodsupplyofSHCC,improveconsiderablythesensitivityofSHCC,anditwasmuchsuperiortoUSbothindetec-tionandcharacterization.