脂肪性肿瘤在磁共振成像（MR）上的非典型表现：在脂肪抑制短TI反转恢复（STIR）序列上呈高信号强度。

Atypical appearance of lipomatous tumors on MR images: high signal intensity with fat-suppression STIR sequences.

作者信息

Murphy W D, Hurst G C, Duerk J L, Feiglin D H, Christopher M, Bellon E M

机构信息

Department of Radiology, Metro-Health Medical Center, Case Western Reserve University, Cleveland, OH.

出版信息

J Magn Reson Imaging. 1991 Jul-Aug;1(4):477-80. doi: 10.1002/jmri.1880010413.

DOI:10.1002/jmri.1880010413

PMID:1665093

Abstract

Lipomatous tumors generally have signal characteristics that allow them to be diagnosed with great accuracy by means of magnetic resonance imaging. These tumors usually have signal intensities similar to those of subcutaneous fat on both T1- and T2-weighted spin-echo images. Previous reports have not, to the authors' knowledge, described the appearance of lipomatous tumors on images obtained with a short-inversion-time inversion-recovery (STIR) sequence, which can be used to suppress signal from fat. Three lipomatous tumors (two liposarcomas and one lipoma) with signal characteristics unlike those of normal subcutaneous fat at all pulse sequences are presented.

摘要

脂肪瘤性肿瘤通常具有一些信号特征，借助磁共振成像能够非常准确地对其进行诊断。这些肿瘤在T1加权和T2加权自旋回波图像上的信号强度通常与皮下脂肪相似。据作者所知，以往的报告尚未描述过脂肪瘤性肿瘤在采用短反转时间反转恢复（STIR）序列获得的图像上的表现，该序列可用于抑制脂肪信号。本文展示了三例脂肪瘤性肿瘤（两例脂肪肉瘤和一例脂肪瘤），其在所有脉冲序列上的信号特征均与正常皮下脂肪不同。