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BibTeX
Wave-CAIPI for highly accelerated 3D imaging
Magnetic resonance in medicine, 2015-06, Vol.73 (6), p.2152-2162
Bilgic, Berkin
Gagoski, Borjan A.
Cauley, Stephen F.
Fan, Audrey P.
Polimeni, Jonathan R.
Grant, P. Ellen
Wald, Lawrence L.
Setsompop, Kawin
2015
Details
Autor(en) / Beteiligte
Bilgic, Berkin
Gagoski, Borjan A.
Cauley, Stephen F.
Fan, Audrey P.
Polimeni, Jonathan R.
Grant, P. Ellen
Wald, Lawrence L.
Setsompop, Kawin
Titel
Wave-CAIPI for highly accelerated 3D imaging
Ist Teil von
Magnetic resonance in medicine, 2015-06, Vol.73 (6), p.2152-2162
Ort / Verlag
United States: Blackwell Publishing Ltd
Erscheinungsjahr
2015
Link zum Volltext
Quelle
Wiley Blackwell Single Titles
Beschreibungen/Notizen
Purpose To introduce the wave‐CAIPI (controlled aliasing in parallel imaging) acquisition and reconstruction technique for highly accelerated 3D imaging with negligible g‐factor and artifact penalties. Methods The wave‐CAIPI 3D acquisition involves playing sinusoidal gy and gz gradients during the readout of each kx encoding line while modifying the 3D phase encoding strategy to incur interslice shifts as in 2D‐CAIPI acquisitions. The resulting acquisition spreads the aliasing evenly in all spatial directions, thereby taking full advantage of 3D coil sensitivity distribution. By expressing the voxel spreading effect as a convolution in image space, an efficient reconstruction scheme that does not require data gridding is proposed. Rapid acquisition and high‐quality image reconstruction with wave‐CAIPI is demonstrated for high‐resolution magnitude and phase imaging and quantitative susceptibility mapping. Results Wave‐CAIPI enables full‐brain gradient echo acquisition at 1 mm isotropic voxel size and R = 3 × 3 acceleration with maximum g‐factors of 1.08 at 3T and 1.05 at 7T. Relative to the other advanced Cartesian encoding strategies (2D‐CAIPI and bunched phase encoding) wave‐CAIPI yields up to two‐fold reduction in maximum g‐factor for nine‐fold acceleration at both field strengths. Conclusion Wave‐CAIPI allows highly accelerated 3D acquisitions with low artifact and negligible g‐factor penalties, and may facilitate clinical application of high‐resolution volumetric imaging. Magn Reson Med 73:2152–2162, 2015. © 2014 Wiley Periodicals, Inc.
Sprache
Englisch
Identifikatoren
ISSN: 0740-3194
eISSN: 1522-2594
DOI: 10.1002/mrm.25347
Titel-ID: cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_4281518
Format
–
Schlagworte
Algorithms
,
Brain Mapping - methods
,
CAIPIRINHA
,
CAIPIRINHA, quantitative susceptibility mapping
,
Humans
,
Image Enhancement - methods
,
Image Processing, Computer-Assisted - methods
,
Imaging, Three-Dimensional - methods
,
Magnetic Resonance Imaging - methods
,
parallel imaging
,
phase imaging
,
quantitative susceptibility mapping
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