Effect of the sampling rate on magnetic resonance imaging
- 1 September 1987
- journal article
- research article
- Published by Wiley in Magnetic Resonance in Medicine
- Vol. 5 (3) , 278-285
- https://doi.org/10.1002/mrm.1910050309
Abstract
Effects of the sampling rate on spatial resolution and the signal‐to‐noise ratio in spin‐echo MR imaging were calculated. The theoretical results suggest that as T decreases, due to either static magnetic field inhomogeneitics or shortened T2 relaxation times, the calculated optimum sampling rate increases accordingly. Since biological tissues exhibit wide variations in their magnetic susceptibilities and T2 relaxation times for various isotopes but modern magnets are characterized by good magnetic field homogeneity, the optimum sampling rate should exhibit an observable dependence on the tissue type. Proton and sodium imaging experiments confirm this conclusion. © 1987 Academic Press, Inc.Keywords
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