PROPELLER EPI: an MRI technique suitable for diffusion tensor imaging at high field strength with reduced geometric distortions. Export

@article{citeulike:1044872, abstract = {A technique suitable for diffusion tensor imaging (DTI) at high field strengths is presented in this work. The method is based on a periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) k-space trajectory using EPI as the signal readout module, and hence is dubbed PROPELLER EPI. The implementation of PROPELLER EPI included a series of correction schemes to reduce possible errors associated with the intrinsically higher sensitivity of EPI to off-resonance effects. Experimental results on a 3.0 Tesla MR system showed that the PROPELLER EPI images exhibit substantially reduced geometric distortions compared with single-shot EPI, at a much lower RF specific absorption rate (SAR) than the original version of the PROPELLER fast spin-echo (FSE) technique. For DTI, the self-navigated phase-correction capability of the PROPELLER EPI sequence was shown to be effective for in vivo imaging. A higher signal-to-noise ratio (SNR) compared to single-shot EPI at an identical total scan time was achieved, which is advantageous for routine DTI applications in clinical practice.}, address = {Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C.}, author = {Wang, F. N. and Huang, T. Y. and Lin, F. H. and Chuang, T. C. and Chen, N. K. and Chung, H. W. and Chen, C. Y. and Kwong, K. K.}, citeulike-article-id = {1044872}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/mrm.20677}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/16206142}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=16206142}, doi = {10.1002/mrm.20677}, issn = {0740-3194}, journal = {Magn Reson Med}, keywords = {distorsion-geometric, dti, sequence}, month = {November}, number = {5}, pages = {1232--1240}, posted-at = {2007-01-16 22:12:21}, priority = {2}, title = {PROPELLER EPI: an MRI technique suitable for diffusion tensor imaging at high field strength with reduced geometric distortions.}, url = {http://dx.doi.org/10.1002/mrm.20677}, volume = {54}, year = {2005} }

TY - JOUR ID - citeulike:1044872 L3 - citeulike-article-id:1044872 N2 - A technique suitable for diffusion tensor imaging (DTI) at high field strengths is presented in this work. The method is based on a periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) k-space trajectory using EPI as the signal readout module, and hence is dubbed PROPELLER EPI. The implementation of PROPELLER EPI included a series of correction schemes to reduce possible errors associated with the intrinsically higher sensitivity of EPI to off-resonance effects. Experimental results on a 3.0 Tesla MR system showed that the PROPELLER EPI images exhibit substantially reduced geometric distortions compared with single-shot EPI, at a much lower RF specific absorption rate (SAR) than the original version of the PROPELLER fast spin-echo (FSE) technique. For DTI, the self-navigated phase-correction capability of the PROPELLER EPI sequence was shown to be effective for in vivo imaging. A higher signal-to-noise ratio (SNR) compared to single-shot EPI at an identical total scan time was achieved, which is advantageous for routine DTI applications in clinical practice. IS - 5 JF - Magn Reson Med SN - 0740-3194 AD - Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C. EP - 1240 TI - PROPELLER EPI: an MRI technique suitable for diffusion tensor imaging at high field strength with reduced geometric distortions. VL - 54 SP - 1232 KW - distorsion-geometric KW - dti KW - sequence AU - Wang, FN AU - Huang, TY AU - Lin, FH AU - Chuang, TC AU - Chen, NK AU - Chung, HW AU - Chen, CY AU - Kwong, KK PY - 2005/11// UR - http://dx.doi.org/10.1002/mrm.20677 ER -