肝脓肿邻近肝实质一过性灌注异常的CT和MRI表现  

MSCT and MRI Findings of Transient Hepatic Perfusion Disorders in Patients with Hepatic Abscess

作　　者：沈文东[1] 李惠民[2] 

机构地区：[1]江苏大学附属宜兴人民医院放射科 [2]上海交通大学医学院附属新华医院放射科

出　　处：《中国医学计算机成像杂志》2012年第4期329-332,共4页Chinese Computed Medical Imaging

摘　　要：目的:探讨肝脓肿伴发的一过性肝灌注异常(THPD)的影像表现及其主要机制。方法:回顾性分析CT上明确显示THPD的19例肝脓肿患者的CT和MRI资料,男9例,女10例,年龄35～82岁,平均62.8±13.8岁。全部完成16层CT与MRI的平扫和增强。结果:CT增强显示16例高灌注THPD,3例低灌注THPD,MRI增强TWI显示14例高灌注THPD,4例低灌注THPD,1例未见灌注异常。常规T_2WI显示灌注异常区高信号16例(84.2%)。CT和MRI灌注表现一致15例(78.9%),不一致4例,其低或等灌注的检查均先于高灌注的检查。结论:脓肿伴发的一过性肝灌注异常的CT和MRI表现一致,较早期可以表现为低灌注,后期均为高灌注。MR T_2WI可以很好显示THPD,有助于诊断。Purpose： To evaluate the CT and MRI findings of transient hepatic perfusion disorders （THPD） in patients with hepatic abscess and explore their main mechanism. Methods： Nineteen hepatic abscess patients （9 male, 10 female, age ranging from 35 to 82, mean 62.8±13.8 years） with THPD diagnosed on CT images were enrolled in our study. All patients were undergone non-contrasted and contrasted scanning with a 16-slice CT scanner and 1.5T MRI scanner. Results： Hyper-perfusion THPD in 16 patients and hypo-perfusion THPD in 3 patients were shown on CT scans. Hyper-perfusion THPD in 14 patients and hypo-perfusion THPD in 4 patients were shown on MRI scans. The THPD region was hyper-intensity in 16 patients（84.2%）. Fifteen THPD shown on MRI were consistent with that on CT （78.9%）. The other 4 THPD lesions were first shown with hypo- or iso-perfusion and lastly shown with hyper-perfusion. Conclusion： The THPD in patients with hepatic abscess have the same perfusion findings on CT and MRI. There may be hypo-perfusion during early phase and hyper-perfusion during late phase of hepatic abscess. T2-weighed imaging could reveal the THPD correctly and may be helpful for the diagnosis.

关 键 词：肝脓肿 一过性肝灌注异常 CT MRI 

分 类 号：R445.2[医药卫生—影像医学与核医学]