Premium
Chemical‐shift imaging: A hybrid approach
Author(s) -
Doyle M.,
Mansfields P.
Publication year - 1987
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910050306
Subject(s) - computer science , nuclear magnetic resonance , physics
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 × 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.