Point spread function mapping with parallel imaging techniques and high acceleration factors: fast, robust, and flexible method for echo-planar imaging distortion correction. Export

@article{citeulike:1058303, abstract = {Echo-planar imaging (EPI) is an ultrafast magnetic resonance (MR) imaging technique prone to geometric distortions. Various correction techniques have been developed to remedy these distortions. Here improvements of the point spread function (PSF) mapping approach are presented, which enable reliable and fully automated distortion correction of echo-planar images at high field strengths. The novel method is fully compatible with EPI acquisitions using parallel imaging. The applicability of parallel imaging to further accelerate PSF acquisition is shown. The possibility of collecting PSF data sets with total acceleration factors higher than the number of coil elements is demonstrated. Additionally, a new approach to visualize and interpret distortions in the context of various imaging and reconstruction methods based on the PSF is proposed. The reliable performance of the PSF mapping technique is demonstrated on phantom and volunteer scans at field strengths of up to 4 T.}, address = {Department of Radiologic Research, Medical Physics, University Hospital of Freiburg, Germany. zaitsev@ukl.uni-freiburg.de}, author = {Zaitsev, M. and Hennig, J. and Speck, O.}, citeulike-article-id = {1058303}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/mrm.20261}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/15508146}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=15508146}, doi = {10.1002/mrm.20261}, issn = {0740-3194}, journal = {Magn Reson Med}, keywords = {distorsion-geometric, dti}, month = {November}, number = {5}, pages = {1156--1166}, posted-at = {2007-01-21 20:25:48}, priority = {2}, title = {Point spread function mapping with parallel imaging techniques and high acceleration factors: fast, robust, and flexible method for echo-planar imaging distortion correction.}, url = {http://dx.doi.org/10.1002/mrm.20261}, volume = {52}, year = {2004} }

TY - JOUR ID - citeulike:1058303 L3 - citeulike-article-id:1058303 N2 - Echo-planar imaging (EPI) is an ultrafast magnetic resonance (MR) imaging technique prone to geometric distortions. Various correction techniques have been developed to remedy these distortions. Here improvements of the point spread function (PSF) mapping approach are presented, which enable reliable and fully automated distortion correction of echo-planar images at high field strengths. The novel method is fully compatible with EPI acquisitions using parallel imaging. The applicability of parallel imaging to further accelerate PSF acquisition is shown. The possibility of collecting PSF data sets with total acceleration factors higher than the number of coil elements is demonstrated. Additionally, a new approach to visualize and interpret distortions in the context of various imaging and reconstruction methods based on the PSF is proposed. The reliable performance of the PSF mapping technique is demonstrated on phantom and volunteer scans at field strengths of up to 4 T. IS - 5 JF - Magn Reson Med SN - 0740-3194 AD - Department of Radiologic Research, Medical Physics, University Hospital of Freiburg, Germany. zaitsev@ukl.uni-freiburg.de EP - 1166 TI - Point spread function mapping with parallel imaging techniques and high acceleration factors: fast, robust, and flexible method for echo-planar imaging distortion correction. VL - 52 SP - 1156 KW - distorsion-geometric KW - dti AU - Zaitsev, M AU - Hennig, J AU - Speck, O PY - 2004/11// UR - http://dx.doi.org/10.1002/mrm.20261 ER -