肝脏16层螺旋CT增强多期相扫描及血管成像的综合应用

目的:探索16层螺旋CT在肝脏多期相扫描设置的优化及血管成像的综合应用技术,以期提高肝脏疾病的诊断准确率.方法:参照肝脏增强时间密度曲线,选择兼顾肝动脉、门静脉成像及肝内病变检出的最佳时间段设置扫描期相.采用此期相设置对40例经B超发现肝脏有病变的患者进行16层CT增强检查.将所得双期血管成像与其中12例行数字减影血管造影(DSA)检查的患者进行比较,作出前瞻性诊断后追踪病理及临床综合资料并作比较.结果:在注射对比剂后40例患者病变均能检出,且前瞻性诊断符合率达95%,双期血管成像与DSA比较有较好的相似性.结论:肝脏16层CT多期相设置及血管成像的综合技术有较高的临床应用价值.

Integration of Multi-phase Contrast-enhanced CT and CT Angiography with 16-slice Spiral CT for Liver Diseasess

Objective:To look for the optimized multi-phase contrast enhanced CT technique and integration CT angiography (CTA) with 16-slice spiral CT,in order to improve the diagnosis accuracy of hepatic diseases.Methods :On the basis of the density-time curve of liver,the best optimized time-phase were selected to set for CTA of hepatic artery and portal vein (CTA and CTP) as well as displaying liver lesions.Forty cases with liver lesions detected by ultrasonography were examined using this technique.The 2-phase CT angiography findings were correlated with 12 patients having digital subtraction angiography (DSA).Prospective imaging diagnosis and comprehensive clinical materials were correlated with pathology findings.Results:Hepatic lesions were detected in these 40 patients after contrast enhancement,the accuracy of prospective diagnosis reached 95%.In most of the cases,CTA and CTP findings were similar to that of DSA.Conclusion:Integration of multi-phase contrast-enhanced CT and CTA with 16-slice spiral CT is valuable in the clinical diagnosis of liver diseases.