This effect of readout bandwidth on SNR efficiency is sometimes overlooked in the literature. For example, in Ref.7, the authors state that for b-SSFP, the signal magnitude is largely independent of TR (when TR << T2), and therefore the shortest possible TR should be used. However, it is to be noted that when the acquisition time per repetition is constrained by TR, true SNR efficiency does not increase with decreased TR since the bandwidth must be increased proportional to the decrease in TR.
Spin-echo micro-MRI of trabecular bone using improved 3D fast large-angle spin-echo (FLASE)†
Article first published online: 12 FEB 2009
Copyright © 2009 Wiley-Liss, Inc.
Magnetic Resonance in Medicine
Volume 61, Issue 5, pages 1114–1121, May 2009
How to Cite
Magland, J.F., Wald, M.J. and Wehrli, F.W. (2009), Spin-echo micro-MRI of trabecular bone using improved 3D fast large-angle spin-echo (FLASE). Magn Reson Med, 61: 1114–1121. doi: 10.1002/mrm.21905
- Issue published online: 15 APR 2009
- Article first published online: 12 FEB 2009
- Manuscript Accepted: 2 NOV 2008
- Manuscript Revised: 6 OCT 2008
- Manuscript Received: 6 AUG 2008
- National Institutes of Health (NIH). Grant Numbers: RO1 AR41443, RO1 AR53156, K25 EB007646
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