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Rapid fat suppression in MRI of the breast with short binomial pulses
Author(s) -
Morrell Glen R.
Publication year - 2006
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.20737
Subject(s) - breast mri , medicine , radiology , breast cancer , mammography , cancer
Purpose To develop a faster method of fat suppression for use in dynamic contrast enhanced MRI of the breast. Materials and Methods A method of fast fat suppression is presented using spatially nonselective rapid binomial pulses. In contrast to conventional binomial frequency‐selective pulses, these short pulses are applied without interpulse delay, allowing for very rapid spectrally selective excitation. Results Effective water excitation and fat suppression were achieved in breast MRI at 3.0 Tesla with total excitation time as low as 160 μsec, which is several times shorter than the excitation time of currently used fat suppression techniques. Rapid fat suppression comes at the expense of increased specific absorption rate (SAR) and mildly degraded quality of suppression. A flexible tradeoff of short imaging time vs. SAR can be made to optimize imaging speed for fat‐suppressed breast MRI. Conclusion Rapid binomial pulses can be used for dynamic contrast enhanced breast MRI with excitation times significantly shorter than currently used fat suppression pulses. Shorter excitation time allows more rapid imaging, allowing greater temporal and spatial resolution for characterization of breast lesions. J. Magn. Reson. Imaging 2006. © 2006 Wiley‐Liss, Inc.