title: Spatially varying fat-water excitation using short 2DRF pulses.
abstract: Conventional spatial-spectral radiofrequency pulses excite the water or the fat spins in a whole slice or slab. While such pulses prove useful in a number of applications, their applicability is severely limited in sequences with short pulse repetition time due to the relatively long duration of the pulses. In the present work, we demonstrate that, by manipulating the parameters of a two-dimensional spartially-selective (2DRF) pulse designed to excite a two-dimensional spatial profile, the chemical-shift sensitivity of the pulse can be exploited to obtain potentially useful spatially varying fat-water excitation patterns.
authors.affiliation: Department of Diagnostic Radiology and Organ Imaging, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong. jyuan@cuhk.edu.hk
authors.forename: Jing
authors.initials: J
authors.lastname: Yuan
authors.forename: Bruno
authors.initials: B
authors.lastname: Madore
authors.forename: Lawrence P
authors.initials: LP
authors.lastname: Panych
mesh_terms: D000273:Adipose Tissue; D000465:Algorithms; D001834:Body Water; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D019047:Phantoms, Imaging; D010938:Plant Oils; D011846:Radio Waves; D012984:Software
chemical_list: D010938:Plant Oils