Powers C, Ros P R, Stoupis C, Johnson W K, Segel K H
Department of Radiology, University of Florida College of Medicine, Gainesville 32610-0374.
Radiographics. 1994 May;14(3):459-82. doi: 10.1148/radiographics.14.3.8066263.
Magnetic resonance (MR) imaging is a powerful tool in the evaluation of primary liver neoplasms. Determination of tumor extent and tissue characterization is provided with standard spin-echo T1- and T2-weighted imaging and is enhanced by the application of advanced sequences such as gradient-echo, fast spin-echo, and fat suppression techniques. Intravenously administered contrast agents, such as gadopentetate dimeglumine and superparamagnetic iron oxide, provide additional opportunities for lesion characterization. Knowledge of the underlying gross and microscopic pathologic features of primary hepatic neoplasms leads to a better understanding of their often complicated MR imaging appearances. The authors correlate the key pathologic features with the most significant MR imaging findings of primary benign and malignant liver neoplasms, including hemangioma, focal nodular hyperplasia, hepatocellular adenoma, infantile hemangioendothelioma, mesenchymal hamartoma, hepatocellular carcinoma, fibrolamellar carcinoma, intrahepatic cholangiocarcinoma, biliary cystadenoma and cystadenocarcinoma, angiosarcoma, hepatoblastoma, and undifferentiated embryonal sarcoma.
磁共振（MR）成像在原发性肝脏肿瘤的评估中是一种强大的工具。通过标准的自旋回波T1加权和T2加权成像可以确定肿瘤范围并进行组织特征描述，而应用梯度回波、快速自旋回波和脂肪抑制技术等先进序列则可增强其效果。静脉注射造影剂，如钆喷酸葡胺和超顺磁性氧化铁，为病变特征描述提供了更多机会。了解原发性肝脏肿瘤的大体和微观病理特征有助于更好地理解其通常复杂的MR成像表现。作者将关键病理特征与原发性肝脏良恶性肿瘤（包括血管瘤、局灶性结节性增生、肝细胞腺瘤、婴儿型血管内皮瘤、间叶性错构瘤、肝细胞癌、纤维板层癌、肝内胆管癌、胆管囊腺瘤和囊腺癌、血管肉瘤、肝母细胞瘤及未分化胚胎性肉瘤）最重要的MR成像表现进行了关联。
