Published in

Wiley, Magnetic Resonance in Medicine, 2(79), p. 796-805

DOI: 10.1002/mrm.26731

Links

Tools

Export citation

Search in Google Scholar

Multiple‐coil k‐space interpolation enhances resolution in single‐shot spatiotemporal MRI

Journal article published in 2017 by Gilad Liberman, Eddy Solomon ORCID, Michael Lustig, Lucio Frydman
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

Full text: Unavailable

Green circle
Preprint: archiving allowed
Orange circle
Postprint: archiving restricted
Red circle
Published version: archiving forbidden
Data provided by SHERPA/RoMEO

Abstract

PurposeSpatio‐temporal encoding (SPEN) experiments can deliver single‐scan MR images without folding complications and with robustness to chemical shift and susceptibility artifacts. Further resolution improvements are shown to arise by relying on multiple receivers, to interpolate the sampled data along the low‐bandwidth dimension. The ensuing multiple‐sensor interpolation is akin to recently introduced SPEN interleaving procedures, albeit without requiring multiple shots.MethodsBy casting SPEN's spatial rasterization in k‐space, it becomes evident that local k‐data interpolations enabled by multiple receivers are akin to real‐space interleaving of SPEN images. The practical implementation of such a resolution‐enhancing procedure becomes similar to those normally used in simultaneous acquisition of spatial harmonics or sensitivity encoding, yet relaxing these methods’ fold‐over constraints.ResultsExperiments validating the theoretical expectations were carried out on phantoms and human volunteers on a 3T scanner. The experiments showed the expected resolution enhancement, at no cost to the sequence's complexity. With the addition of multibanding and stimulated echo procedures, 48‐slice full‐brain coverage could be recorded free from distortions at submillimeter resolution, in 3 s.ConclusionsSuper‐resolved SPEN with SENSE (SUSPENSE) achieves the goals of multishot SPEN interleaving delivering single‐shot submillimeter in‐plane resolutions in scanners equipped with suitable multiple sensors. Magn Reson Med 79:796–805, 2018. © 2017 International Society for Magnetic Resonance in Medicine.