Simultaneous acquisition of gradient-echo and asymmetric spin-echo for single-shot z-shim: Z-SAGA
Article first published online: 29 DEC 2003
Copyright © 2003 Wiley-Liss, Inc.
Magnetic Resonance in Medicine
Volume 51, Issue 1, pages 212–216, January 2004
How to Cite
Heberlein, K. A. and Hu, X. (2004), Simultaneous acquisition of gradient-echo and asymmetric spin-echo for single-shot z-shim: Z-SAGA. Magn Reson Med, 51: 212–216. doi: 10.1002/mrm.10680
- Issue published online: 29 DEC 2003
- Article first published online: 29 DEC 2003
- Manuscript Accepted: 10 SEP 2003
- Manuscript Revised: 26 JUN 2003
- Manuscript Received: 27 JAN 2003
- NIH. Grant Number: R01MH55346
- Georgia Research Alliance
- Whitaker Foundation
This article describes the Z-SAGA pulse sequence, a technique for recovering susceptibility losses in EPI images for neuroimaging applications. The pulse sequence is based on an asymmetric spin echo EPI sequence and acquires a gradient echo image and an asymmetric spin echo image in a single shot. For one of the images, a z-shim gradient pulse is applied to compensate for susceptibility-related field distortions. The two images are combined to form an image with reduced signal loss. This sequence is simple to implement and experimentally demonstrated to be effective for BOLD imaging. Magn Reson Med 51:212–216, 2004. © 2003 Wiley-Liss, Inc.