Title :
Analytical form of Shepp-Logan phantom for parallel MRI
Author :
Guerquin-Kern, M. ; Karahanoglu, F.I. ; Van De Ville, D. ; Pruessmann, K.P. ; Unser, M.
Author_Institution :
Biomed. Imaging Group, Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne, Switzerland
Abstract :
We present an analytical form of ground-truth k-space data for the 2-D Shepp-Logan brain phantom in the presence of multiple and non-homogeneous receiving coils. The analytical form allows us to conduct realistic simulations and validations of reconstruction algorithms for parallel MRI. The key contribution of our work is to use a polynomial representation of the coil´s sensitivity. We show that this method is particularly accurate and fast with respect to the conventional methods. The implementation is made available to the community.
Keywords :
biomedical MRI; brain; coils; image reconstruction; medical image processing; phantoms; physiological models; Shepp-Logan phantom; ground-truth k-space data; parallel MRI; phantom; polynomial representation; receiving coils; reconstruction algorithms; Analytical models; Biomedical image processing; Biomedical imaging; Coils; Discrete Fourier transforms; Image analysis; Image reconstruction; Imaging phantoms; Magnetic resonance imaging; Reconstruction algorithms; Shepp-Logan; analytic simulation; non-homogeneous coil; pMRI; parallel magnetic resonance imaging; phantom;
Conference_Titel :
Biomedical Imaging: From Nano to Macro, 2010 IEEE International Symposium on
Conference_Location :
Rotterdam
Print_ISBN :
978-1-4244-4125-9
Electronic_ISBN :
1945-7928
DOI :
10.1109/ISBI.2010.5490365
