Krinsky G, Rofsky N M, Weinreb J C
Department of Radiology, HW-207, New York University Medical Center, 10016, USA.
AJR Am J Roentgenol. 1996 Mar;166(3):523-6. doi: 10.2214/ajr.166.3.8623620.
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.
短反转时间反转恢复（STIR）序列以及STIR序列的快速采集弛豫增强（RARE）版本是常用的脉冲序列，它们足够敏感，能够检测多种病理状况。除了抑制脂肪信号外，STIR序列还能产生附加的T1加权、T2加权和质子密度加权对比，以提高病变的显影效果[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。任何具有与脂肪相似短T1的组织信号也可能被消除。当产生适当程度的T1缩短时，积聚顺磁性造影剂的组织信号也可能被STIR序列抑制。
