Reversal of the read gradient in a SSFP imaging experiment allows a full spin echo to be collected in the interval T between successive rfpulses. Orthogonal gradient pulses are used to dephase and subsequently rephase the transverse magnetization each T enabling 2D or 3D Fourier techniques. The mini
MR imaging of brain surface using steady-state free precession
✍ Scribed by Atsushi Takane; Hideaki Koizumi
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 297 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0740-3194
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
We present an imaging technique that affords direct and noninvasive visualization of brain surface structure. This technique utilizes the signal before the rf pulse in steady‐state free precession. This signal highly reflects the spin‐spin relaxation time T~2~, as was studied in our laboratory (Matsui et al. J. Magn. Reson. 62 12, 1985). Therefore the cerebrospinal fluid (CSf), having a long T~2~, is depicted as high intensity. The CSF permeates cerebral sulci and fissures. The imaging time with this technique is less than 1 min. © 1992 Academic Press, Inc.
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