Ralls P W, Henley D S, Colletti P M, Benson R, Raval J K, Radin D R, Boswell W D, Halls J M
Department of Radiology, University of Southern California School of Medicine, Los Angeles.
Radiology. 1987 Dec;165(3):801-4. doi: 10.1148/radiology.165.3.3317504.
Hepatic magnetic resonance (MR) imaging was performed in 12 patients with 13 amebic liver abscesses. While no specific image or intensity pattern was noted, most lesions were round or oval with smooth, well-defined margins; had decreased signal intensity compared with that of liver parenchyma on T1-weighted images and increased signal intensity on T2-weighted images; and had prominent, often multiple rims of variable signal intensity. Signal homogeneity within the abscess was present more often on T1- than on T2-weighted images. Diaphragmatic disruption was seen in two cases on coronal MR images. An amebic empyema was differentiable from sympathetic pleural effusions by its hyperintensity on both T1- and T2-weighted images. In patients who also underwent computed tomography (CT) or ultrasonography (US), no lesion was missed with any modality, and except for shape, no consistent features were found among images obtained with the different modalities. The data suggest that CT, US, and MR imaging are comparably effective in the detection of amebic abscess.
对12例患有13个阿米巴肝脓肿的患者进行了肝脏磁共振（MR）成像检查。虽然未观察到特定的图像或信号强度模式，但大多数病变呈圆形或椭圆形，边缘光滑、界限清晰；在T1加权图像上与肝实质相比信号强度降低，在T2加权图像上信号强度增加；并且有明显的、通常为多个信号强度各异的边缘。脓肿内的信号均匀性在T1加权图像上比在T2加权图像上更常见。在冠状位MR图像上，2例可见膈肌破坏。阿米巴脓胸在T1加权和T2加权图像上均表现为高信号，可与反应性胸腔积液相鉴别。在同时接受计算机断层扫描（CT）或超声检查（US）的患者中，任何一种检查方式均未漏诊病变，并且除了形状外，不同检查方式所获得的图像之间未发现一致的特征。数据表明，CT、US和MR成像在检测阿米巴脓肿方面具有同等效力。
