Fleckenstein J L, Archer B T, Barker B A, Vaughan J T, Parkey R W, Peshock R M
Department of Radiology, University of Texas Southwestern Medical Center, Dallas 75235-9085.
Radiology. 1991 May;179(2):499-504. doi: 10.1148/radiology.179.2.2014300.
To enhance the versatility of the short-tau inversion-recovery (STIR) sequences, the authors determined a range of repetition time (TR) and inversion time (TI) combinations that suppress signal intensity from fat by study of both patient and phantom images. To make fast STIR images, variations in the following pulsing conditions were studied with use of an interactive computer program: decreasing the TR, limiting the number of excitations, and limiting the number of phase-encoding steps. The authors found that (a) STIR imaging need not be time consuming, (b) fat suppression can be accomplished at shorter TR by using shorter TI, and (c) short-TR fast STIR imaging is sensitive to enhancement with gadopentetate dimeglumine.
为提高短反转恢复（STIR）序列的通用性，作者通过研究患者和体模图像，确定了一系列抑制脂肪信号强度的重复时间（TR）和反转时间（TI）组合。为了获取快速STIR图像，利用交互式计算机程序研究了以下脉冲条件的变化：缩短TR、限制激励次数以及限制相位编码步数。作者发现：（a）STIR成像无需耗费大量时间；（b）通过使用更短的TI，可在更短的TR下实现脂肪抑制；（c）短TR快速STIR成像对钆喷酸葡胺增强敏感。
