细菌性肝脓肿治疗吸收后的特征性MRI表现

目的 评价细菌性肝脓肿治疗吸收后纤维化期的特征性MRI表现.方法 本组资料包括经影像及临床确诊为肝脓肿患者7例,其中男5例,女2例,年龄30～80岁.予患者抗感染结合介入抽吸/穿刺引流治疗后,门诊定期影像学复查.结果肝脓肿初期MRI呈不均匀长T1长T2信号,经治疗后肝脓肿T2信号逐渐降低.治疗3～7个月后MRI表现为：T1WI呈明显低信号,T2WI呈等信号,增强扫描可见轻度不规则条状强化.结论脓肿吸收后呈T1WI明显低信号T2WI等信号,为肝脓肿纤维化期的特征性MRI表现.

Characteristics of remitted pyogenic hepatic abscesses on MRI

Objective To probe characteristics of remitted pyogenic hepatic abscesses on MRI images over fibrosis period after non-surgery therapy. Methods 7 patients were confirmedly dia maosed as pyogenic hepatic abscesses by clinical and imaging data. 5 were men and 2 were women. They aged 30-80 y. The patients atl.ended our outpatient department for imaging follow-up after having undergone aspiration/puncture drainage procedures. Results On initial stage ofpyogeinc hepatic abscesses, MRI images displayed uneven long T1 and long T2 signals, and intensity ofT2 tapered after therapy. 3-7 months later MRI images manifested significant hypointensity on T1WI and iso-intensity on T2WI, slight irregular strand-shaped enhancement took place on enhanced scauning. Conclusion Manifestations of MRI images during fibrosis period after remission of pyagenic hepatic abscesses are characteristic, displaying significant hypointensity for T1WI and iso-intensity for T2WI.