Abstract:
:With standard spectroscopic imaging, high spatial resolution is achieved at the price of a large number of phase-encoding steps, leading to long acquisition times. Fast spatial encoding methods reduce the minimum total acquisition time. In this article, a k-space scanning scheme using a continuous series of growing and shrinking, or "out-and-in," spiral trajectories is implemented and the feasibility of spiral spectroscopic imaging for animal models at high B(0) field is demonstrated. This method was applied to rat brain at 7 T. With a voxel size of about 8.7 microl (as calculated from the point-spread function), a 30 x 30 matrix, and a spectral bandwidth of 11 kHz, the minimum scan time was 9 min 20 sec for a signal-to-noise ratio of 7.1 measured on the N-acetylaspartate peak.
journal_name
Magn Reson Medjournal_title
Magnetic resonance in medicineauthors
Hiba B,Faure B,Lamalle L,Décorps M,Ziegler Adoi
10.1002/mrm.10622subject
Has Abstractpub_date
2003-12-01 00:00:00pages
1127-33issue
6eissn
0740-3194issn
1522-2594journal_volume
50pub_type
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