摘要
目的:探讨肝血管瘤周围灌注异常(HPD)的螺旋CT特点,并综合文献分析其形成机制。方法:回顾分析183例患者共276个肝血管瘤的CT动态增强表现,分析其周围的异常灌注与血管瘤大小及强化速度的关系。结果:276个肝血管瘤出现异常高灌注62个(22.46%)。肝动脉期表现为楔形、节段性或不规则形强化;门静脉期密度略高于肝实质或与肝实质相等,延迟期与肝实质等密度。快速强化型血管瘤出现肝实质灌注异常现象的几率(40.29%)大于慢速强化型(4.40%);直径(d)≤2 cm小血管瘤HPD的发生率(28.49%)高于d>2 cm大血管瘤(11.34%)。结论:肝血管瘤周围异常灌注具有特征性的CT表现,易见于快速强化型的小血管瘤,肝脏CT动态增强扫描是诊断肝脏异常高灌注的有效方法。
Objective：To explore the CT findings of hepatic perfusion disorders（HPD） of hepatic hemangiomas,and reference literatures to analyse the formation mechanism.Methods：Improvement CT images obtained in 183 patients with 276 hemangiomas to analysie the strengthen speed of renfrence between the size of Hemangioma and Abnormal-perfusion.Results：Sixty-two of the 276 live hemangiomas（22.46 %）had HPD.The liver artery period performance is wedge-shaped,segmental-shaped or lobulated shaped;Density of portal vein period is skim hligher than liver parenchymaor or be equal with each other liver.density with liver.The desity of period of delay and liver parenchymaor are equal.Hemangiomas of rapid enhancement with hepatic perfusion disorders（HPD） was higher than inhemangiomas with rapid enhancement（40.29 %） and small size（d≤2 cm） than in those with slow enhancement（4.40 %） and large size（d2 cm）（P0.01）.Conclusion： With hepatic perfusion disorders（HPD） of hepatic hemangiomas has characteristic CT performance,wich tends to show in the rapidity of intratumoral cont rast enhancement in small hemangiomas.The dynamic state strengthen to scan of liver CT scan is a high effective method to diagnosis abnormal liver perfusion.
出处
《内蒙古医学杂志》
2010年第12期1429-1432,共4页
Inner Mongolia Medical Journal
