Nonspecificity of short inversion time inversion recovery (STIR) as a technique of fat suppression: Pitfalls in image interpretation
Nonspecificity of short inversion time inversion recovery (STIR) as a technique of fat suppression: Pitfalls in image interpretation
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DOI：
10.2214/ajr.166.3.8623620
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发表时间：
1996-03-01
影响因子：
5
通讯作者：
Weinreb, JC
中科院分区：
文献类型：
--
作者：
Krinsky, G;Rofsky, NM;Weinreb, JC
短反转时间反转恢复（STIR）和快速采集与弛豫增强（RARE）版本的STIR是常用的脉冲序列，灵敏度足以检测广泛的病理条件。除了抑制来自脂肪的信号外，STIR序列还实现了附加的T1加权、T2加权和质子密度加权对比，以促进病变的明显性[1，2]。STIR序列的脂肪抑制基于短T1弛豫率，因此不是组织特异性的。来自具有短T1的任何组织的信号（类似于脂肪的信号）也可以被置零。当产生适当程度的T1缩短时，STIR序列也可以抑制来自积聚顺磁性造影剂的组织的信号。
Short inversion time inversion recovery (STIR) and the rapid acquisition with relaxation enhancement (RARE) version of STIR are commonly used pulse sequences that are sensitive enough to detect a broad range of pathologic conditions. In addition to suppressing the signal from fat, the STIR sequence achieves additive T1-weighted, T2-weighted, and proton density-weighted contrast to facilitate lesion conspicuity [1, 2]. Fat suppression with STIR sequences is based on short T1 relaxation rates and therefore is not tissue specific. The signal from any tissue with a short T1, similar to that of fat, may be nulled as well. The signal from tissues that accumulate paramagnetic contrast agents also may be suppressed with STIR sequences when an appropriate degree of T1 shortening results.