Spatiotemporal magnetic field monitoring for MR Export

@article{Barmet2008, abstract = {MR experiments frequently rely on signal encoding by the application of magnetic fields that vary in both space and time. The accurate interpretation of the resulting signals often requires knowledge of the exact spatiotemporal field evolution during the experiment. To better fulfill this need, a new approach is presented that enables measuring the field evolution concurrently with any MR sequence. Miniature NMR probes are used to monitor the MR phase evolution around the object under investigation. Based on these data, a global phase model is calculated that can then be used as a basis for processing the actual image or spectroscopic data. The new method is demonstrated by MRI of a phantom, using spin-warp, spiral, and EPI trajectories. Throughout, the monitoring results enabled highly accurate image reconstruction, even in the presence of massive gradient imperfections. Magn Reson Med 60:187-197, 2008. {\copyright} 2008 Wiley-Liss, Inc.}, address = {Institute for Biomedical Engineering of the University, ETH Zurich, Department of Information Technology and Electrical Engineering, and University of Zurich, Medical Faculty, Zurich, Switzerland}, author = {Barmet, Christoph and De Zanche, Nicola and Pruessmann, Klaas P.}, citeulike-article-id = {3199461}, citeulike-linkout-0 = {http://dx.doi.org/10.1002/mrm.21603}, citeulike-linkout-1 = {http://www3.interscience.wiley.com/cgi-bin/abstract/120173542/ABSTRACT}, doi = {10.1002/mrm.21603}, journal = {Magnetic Resonance in Medicine}, keywords = {2008, ibt, magnetic-field-monitoring, mrm, reconstruction}, number = {1}, pages = {187--197}, posted-at = {2008-09-06 11:11:33}, priority = {0}, title = {Spatiotemporal magnetic field monitoring for MR}, url = {http://dx.doi.org/10.1002/mrm.21603}, volume = {60}, year = {2008} }

TY - JOUR ID - Barmet2008 L3 - citeulike-article-id:3199461 N2 - MR experiments frequently rely on signal encoding by the application of magnetic fields that vary in both space and time. The accurate interpretation of the resulting signals often requires knowledge of the exact spatiotemporal field evolution during the experiment. To better fulfill this need, a new approach is presented that enables measuring the field evolution concurrently with any MR sequence. Miniature NMR probes are used to monitor the MR phase evolution around the object under investigation. Based on these data, a global phase model is calculated that can then be used as a basis for processing the actual image or spectroscopic data. The new method is demonstrated by MRI of a phantom, using spin-warp, spiral, and EPI trajectories. Throughout, the monitoring results enabled highly accurate image reconstruction, even in the presence of massive gradient imperfections. Magn Reson Med 60:187-197, 2008. © 2008 Wiley-Liss, Inc. IS - 1 JF - Magnetic Resonance in Medicine AD - Institute for Biomedical Engineering of the University, ETH Zurich, Department of Information Technology and Electrical Engineering, and University of Zurich, Medical Faculty, Zurich, Switzerland EP - 197 TI - Spatiotemporal magnetic field monitoring for MR VL - 60 SP - 187 KW - 2008 KW - ibt KW - magnetic-field-monitoring KW - mrm KW - reconstruction AU - Barmet, Christoph AU - De Zanche, Nicola AU - Pruessmann, Klaas PY - 2008/// UR - http://dx.doi.org/10.1002/mrm.21603 ER -