Zigzag sampling for improved parallel imaging Export

@article{citeulike:6086748, abstract = {Conventional Cartesian parallel MRI methods are limited to the sensitivity variations provided by the underlying receiver coil array in the dimension in which the data reduction is carried out, namely, the phase-encoding directions. However, in this work an acquisition strategy is presented that takes advantage of sensitivity variations in the readout direction, thus improving the parallel imaging reconstruction process. This is achieved by employing rapidly oscillating phase-encoding gradients during the actual readout. The benefit of this approach is demonstrated in vivo using various zigzag-shaped gradient trajectory designs. It is shown that zigzag type sampling, in analogy to CAIPIRINHA, modifies the appearance of aliasing in 2D and 3D imaging, thereby utilizing additional sensitivity variations in the readout direction directly resulting in improved parallel imaging reconstruction performance. Magn Reson Med 60:474-478, 2008. {\copyright} 2008 Wiley-Liss, Inc.}, address = {Research Center Magnetic-Resonance-Bavaria, W\"{u}rzburg, Germany; Department of Radiology, Tokai University, Isehara, Japan; Department of Experimental Physics 5, University of W\"{u}rzburg, W\"{u}rzburg, Germany; Department of Radiology, University Hospitals of Cleveland and Case Western Reserve University, Cleveland, Ohio}, author = {Breuer, Felix A. and Moriguchi, Hisamoto and Seiberlich, Nicole and Blaimer, Martin and Jakob, Peter M. and Duerk, Jeffrey L. and Griswold, Mark A.}, citeulike-article-id = {6086748}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/mrm.21643}, citeulike-linkout-1 = {http://www3.interscience.wiley.com/cgi-bin/abstract/121356617/ABSTRACT}, doi = {10.1002/mrm.21643}, issn = {1522-2594}, journal = {Magnetic Resonance in Medicine}, keywords = {epi, parallel-imaging, sampling}, number = {2}, pages = {474--478}, posted-at = {2009-11-08 23:43:25}, priority = {2}, title = {Zigzag sampling for improved parallel imaging}, url = {http://dx.doi.org/10.1002/mrm.21643}, volume = {60}, year = {2008} }

TY - JOUR ID - citeulike:6086748 L3 - citeulike-article-id:6086748 N2 - Conventional Cartesian parallel MRI methods are limited to the sensitivity variations provided by the underlying receiver coil array in the dimension in which the data reduction is carried out, namely, the phase-encoding directions. However, in this work an acquisition strategy is presented that takes advantage of sensitivity variations in the readout direction, thus improving the parallel imaging reconstruction process. This is achieved by employing rapidly oscillating phase-encoding gradients during the actual readout. The benefit of this approach is demonstrated in vivo using various zigzag-shaped gradient trajectory designs. It is shown that zigzag type sampling, in analogy to CAIPIRINHA, modifies the appearance of aliasing in 2D and 3D imaging, thereby utilizing additional sensitivity variations in the readout direction directly resulting in improved parallel imaging reconstruction performance. Magn Reson Med 60:474-478, 2008. © 2008 Wiley-Liss, Inc. IS - 2 JF - Magnetic Resonance in Medicine SN - 1522-2594 AD - Research Center Magnetic-Resonance-Bavaria, Würzburg, Germany; Department of Radiology, Tokai University, Isehara, Japan; Department of Experimental Physics 5, University of Würzburg, Würzburg, Germany; Department of Radiology, University Hospitals of Cleveland and Case Western Reserve University, Cleveland, Ohio EP - 478 TI - Zigzag sampling for improved parallel imaging VL - 60 SP - 474 KW - epi KW - parallel-imaging KW - sampling AU - Breuer, Felix AU - Moriguchi, Hisamoto AU - Seiberlich, Nicole AU - Blaimer, Martin AU - Jakob, Peter AU - Duerk, Jeffrey AU - Griswold, Mark PY - 2008/// UR - http://dx.doi.org/10.1002/mrm.21643 ER -