Franconi F, Akoka S
Laboratoire de Biophysique Cellulaire et RMN - Faculté de Médecine Tours, France.
Magn Reson Med. 1995 May;33(5):683-8. doi: 10.1002/mrm.1910330514.
An imaging method is presented for obtaining chemical shift images from only one acquisition. Images are acquired with the same spatial resolution as in regular spin-echo imaging. The sequence is based on the simultaneous acquisition of a spin echo and a stimulated echo in a single pass. The use of 90 degrees radiofrequency pulse flip angles results in the same proton density, T2 and T1 weighting for the two echoes. Application of this sequence to chemical shift imaging is discussed for three fat suppression techniques (chopper, CHESS, and hybrid). Imaging was performed on phatoms and volunteers. The image quality was the same as those obtained by the chopper and the hybrid methods and the acquisition time was reduced by a factor of two.
提出了一种仅通过一次采集就能获得化学位移图像的成像方法。采集的图像具有与常规自旋回波成像相同的空间分辨率。该序列基于在单次扫描中同时采集自旋回波和受激回波。使用90度射频脉冲翻转角可使两个回波具有相同的质子密度、T2和T1加权。针对三种脂肪抑制技术（斩波器、CHESS和混合技术）讨论了该序列在化学位移成像中的应用。对假体和志愿者进行了成像。图像质量与通过斩波器和混合方法获得的图像质量相同，采集时间减少了一半。
