Fast- k z three-dimensional tailored radiofrequency pulse for reduced B 1 inhomogeneity
Saekho, Suwit; Yip, Chun-Yu; Noll, Douglas C.; Boada, Fernando E.; Stenger, V. Andrew
2006
Citation
Saekho, Suwit; Yip, Chun-yu; Noll, Douglas C.; Boada, Fernando E.; Stenger, V. Andrew (2006)."Fast- k z three-dimensional tailored radiofrequency pulse for reduced B 1 inhomogeneity." Magnetic Resonance in Medicine 9999(9999): NA-NA. <http://hdl.handle.net/2027.42/49297>
Abstract
This article presents a small-flip-angle, three-dimensional tailored RF pulse that excites thin slices with an adjustable quadratic in-plane spatial variation. The quadratic spatial variation helps to compensate for the loss in image uniformity using a volume coil at 3 T due to the wavelike properties of the RF field. The pulse is based on a novel “fast- k z ” design that uses a series of slice-select subpulses along k z and phase encoding “blips” along k x – k y . The method is demonstrated by acquiring a series of 5-mm-thick T 2 -weighted images of the human brain at 3 T using pulses 4.8 ms in length with a 45 ° flip angle. Magn Reson Med, 2006. © 2006 Wiley-Liss, Inc.Publisher
Wiley Subscription Services, Inc., A Wiley Company
ISSN
0740-3194 1522-2594
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