TY - JOUR
T1 - Simultaneous acquisition of spatial harmonics (SMASH)
T2 - Fast imaging with radiofrequency coil arrays
AU - Sodickson, Daniel K.
AU - Manning, Warren J.
PY - 1997/10
Y1 - 1997/10
N2 - Simultaneous Acquisition of Spatial Harmonics (SMASH) is a new fast- imaging technique that increases MR image acquisition speed by an integer factor over existing fast-imaging methods, without significant sacrifices in spatial resolution or signal-to-noise ratio. Image acquisition time is reduced by exploiting spatial information inherent in the geometry of a surface coil array to substitute for some of the phase encoding usually produced by magnetic field gradients. This allows for partially parallel image acquisitions using many of the existing fast-imaging sequences. Unlike the data combination algorithms of prior proposals for parallel imaging, SMASH reconstruction involves a small set of MR signal combinations prior to Fourier transformation, which can be advantageous for artifact handling and practical implementation. A twofold savings in image acquisition time is demonstrated here using commercial phased array coils on two different MR- imaging systems. Larger time savings factors can be expected for appropriate coil designs.
AB - Simultaneous Acquisition of Spatial Harmonics (SMASH) is a new fast- imaging technique that increases MR image acquisition speed by an integer factor over existing fast-imaging methods, without significant sacrifices in spatial resolution or signal-to-noise ratio. Image acquisition time is reduced by exploiting spatial information inherent in the geometry of a surface coil array to substitute for some of the phase encoding usually produced by magnetic field gradients. This allows for partially parallel image acquisitions using many of the existing fast-imaging sequences. Unlike the data combination algorithms of prior proposals for parallel imaging, SMASH reconstruction involves a small set of MR signal combinations prior to Fourier transformation, which can be advantageous for artifact handling and practical implementation. A twofold savings in image acquisition time is demonstrated here using commercial phased array coils on two different MR- imaging systems. Larger time savings factors can be expected for appropriate coil designs.
KW - Fast imaging
KW - MR image reconstruction
KW - RF coil array
KW - Simultaneous acquisition
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U2 - 10.1002/mrm.1910380414
DO - 10.1002/mrm.1910380414
M3 - Article
C2 - 9324327
AN - SCOPUS:0030982409
SN - 0740-3194
VL - 38
SP - 591
EP - 603
JO - Magnetic resonance in medicine
JF - Magnetic resonance in medicine
IS - 4
ER -