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Proton chemical-shift imaging with magnetically and electrically inhomogeneous objects

โœ Scribed by Tatsuo Nozokido; Etsuji Yamamoto; Hideki Kohno; Shinji Yamamoto

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
519 KB
Volume
19
Category
Article
ISSN
0740-3194

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โœฆ Synopsis

Proton chemical-shift imaging with the elimination of three kinds of artifacts caused by main magnetic field inhomogeneities, susceptibility distributions of imaging objects, and the electromagnetic properties of radiofrequency (RF) fields is presented in this paper. In addition, the last of these artifacts, which is dependent upon the conductivity distributions of objects, especially in high-tesla imaging, is also demonstrated experimentally. The method proposed here enables the reconstruction of artifact-free water/fat separation images by using simple image data manipulations without the complicated phase-unwrap process, even with main magnetic field inhomogeneities larger than the chemical-shift difference between water and fat magnetizations.

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