Imura C
Siemens-Asahi Medical Technologies Ltd., Marketing Division, Application Center.
Nihon Rinsho. 1998 Nov;56(11):2778-82.
HASTE (half-Fourier acquisition single-shot turbo spin echo) is the single-section pulse sequence with high-resolution and moderate T2 contrast. Therefore it allows ultra fast acquisition, it is not influenced by respiratory motion, and it is insensitive to susceptibility effect because all of the data are from spin-echo. Although it is very suitable for visualization of fluid, it suffers from resolution loss of parenchyma which has relatively short T2 value and seems blurred. Recently it is recognized as one of the most powerful tool for imaging abdomen, especially for MRCP (Magnetic Resonance Cholangio-Pancreato-graphy). The features of HASTE and some examples of possible clinical application are shown.
HASTE（半傅里叶采集单次激发快速自旋回波）是一种具有高分辨率和适度T2对比度的单层面脉冲序列。因此，它能够实现超快速采集，不受呼吸运动影响，并且由于所有数据均来自自旋回波，所以对磁化率效应不敏感。尽管它非常适合显示液体，但对于T2值相对较短的实质组织会出现分辨率损失，图像看起来模糊。最近，它被认为是腹部成像最强大的工具之一，尤其是在磁共振胰胆管造影（MRCP）方面。文中展示了HASTE的特点以及一些可能的临床应用实例。
