✦ LIBER ✦

Chemical-shift imaging: A hybrid approach

✍ Scribed by M. Doyle; P. Mansfields

Publisher: John Wiley and Sons
Year: 1987
Tongue: English
Weight: 370 KB
Volume: 5
Category: Article
ISSN: 0740-3194
DOI: 10.1002/mrm.1910050306

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✦ Synopsis

The hybrid technique of projection-reconstruction echo-planar (PREP) imaging for obtaining chemical-shift images is demonstrated experimentally using a fluorine sample. The technique which is a variation on echo-planar imaging (EPI) relies on a multipass procedure. It is nevertheless quite efficient and consequently chemical-shift images may be produced in a few minutes. The method produces images in 64 chemical-shift regions, each region mapped spatially by 64 X 64 pixels. The imaging time was just over 4 min. These 64 chemical-shifted images can be straightforwardly added together to form an undistorted image of the complete object. In addition the chemical-shift spectrum can be extracted and the various chemical-shift images can be unambiguously assigned to the spectral peaks.

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