Hepatic tumors: magnetic resonance and CT appearance.
Hepatic tumors: magnetic resonance and CT appearance.
复制标题
肝脏肿瘤：磁共振和CT表现。
作者：
A. Moss;H. Goldberg;D. Stark;P. Davis;A. Margulis;L. Kaufman;L. Crooks
分析了 28 名患者原发性和转移性肝脏肿瘤的磁共振 (MR) 特征，并与 CT 结果进行比较。 MR 图像是使用各种自旋回波和反转恢复成像技术在 0.35 特斯拉超导磁体上获得的。正常肝脏呈现均匀且中等强度。肿瘤通常在自旋回波图像上表现为强度增加的团块，在反转恢复图像上表现为强度减弱的团块。肿瘤的T1和T2时间延长，不同类型的肿瘤和单个肿瘤的区域内的T1和T2时间有所不同。特定的 T1 和/或 T2 时间不能归因于任何肿瘤。肿瘤强度根据所采用的成像技术而变化很大，在某些成像序列上与正常肝脏等强度。 MR 和 CT 检测病变的效果相当，但 MR 能更好地显示肿瘤的内部结构以及肿瘤与肝血管结构的关系。
The magnetic resonance (MR) features of primary and metastatic hepatic tumors were analyzed and compared with CT findings in 28 patients. MR images were obtained on a 0.35-Tesla superconducting magnet using a variety of spin echo and inversion recovery imaging techniques. The normal liver appeared homogeneous and of moderate intensity. Tumors typically appeared as masses of increased intensity on spin echo images and diminished intensity on inversion recovery images. Tumors had prolonged T1 and T2 times, which varied in different types of tumors and within regions of a single tumor. A specific T1 and/or T2 time could not be ascribed to any tumor. Tumor intensity varied greatly depending on the imaging techniques employed, becoming isointense with normal liver on some imaging sequences. MR and CT detected lesions equally well, but internal architecture and the relationship of tumors to hepatic vascular structures were better displayed on MR.