摘要
目的 :探讨螺旋CT三期增强扫描对肝血管瘤诊断的临床价值及应用方法。方法 :搜集 5 0例肝血管瘤患者行螺旋CT普通扫描后进行螺旋CT三期增强扫描的资料。扫描范围 :全肝 ,层厚 8mm ,p =1.5 ;均采用高压注射器团注法单相期注射离子型或非离子型造影剂 80 -10 0ml( 1.5 -2 .0ml/kg) ,流率为 2 .5-3 .5ml/s ,扫描延迟时间为 :肝动脉期 :2 0 -3 0S ;门静脉期 :60 -70S ;延迟扫描分两步走 ,第一次延迟时间为3 -5min第二次延迟时间为 :10 -15min。结果 :螺旋CT普通扫描 :表现为肝内边界较清楚的低密度病灶。增强扫描 :病灶大于 1cm的 44例 ,其中大于 5cm的 12例 ,均可见典型的肝血管瘤的CT表现。其中l5例为多发 ,而其中 5例是在倒置期中检出小于 1cm的多发病灶。单发小于 1cm者 6例 ,虽无明显肝动脉期结节样强化 ,但具有门静脉期和延迟期的典型改变。结论 :肝血管瘤在三期增强各期中大多数有典型表现 ,根据肝血管瘤的强化特点将期强化过程分为四期 ,即边缘结节强化期、向内部充填期、密度倒置期、等密度期。根据增强各个时期病灶的动态变化特点即可定性诊断 ,而且在显示病灶全貌尤其对倒置期的显示 。
Objective:To in vestigate the clinical value and methods of 3-phase enhance spiral CT scanning in diagnosing hemangioma of liver.Methods:50 cases of hemangioma of liver scanned by 3-phase contrast-enhanced spiral CT after common scan. scan region: whole liver, thickness 8 mm, p=1.5; all used high pressure united injection single phase to inject type contrast media or no ion type contrast 80-100ml(1.5-2.0mlkg) and injected rate 2.5-3.5 mls.Results:spiral common CT scan: with low density and smooth margin in liver, 9 cases with small and more low density satellite lesions in or surround the hemangioma of liver. enhanced CT: 44 cases the diseases are more than 1 cm and 12 of them are more than 5 cm. All have typical CT exhibition, among of them 15 cases with many diseases, five of them were found many little diseases less than 1 cm in the phase of delay. 6 cases less than 1 cm is single without typical enhancement, but have other typical exhibition in phase of portal vein and delay.Conclusion:majority hemangiomas hve typical exhibition and base on character of hemangioma enhance to separate it for 4 phase, liver artery-phase (A-phase), portal vein-phase(P-phase),delay-phase(D-phase).P-phase and D-phase are important in finding small diseases and improve the ability to compare with primary liver cancer.
出处
《航空航天医药》
2005年第1期7-8,共2页
Aerospace Medicine
