TY - GEN
T1 - Rapid free-breathing dynamic contrast-enhanced MRI using motion-resolved compressed sensing
AU - Feng, Li
AU - Sodickson, Daniel K.
AU - Otazo, Ricardo
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/7/21
Y1 - 2015/7/21
N2 - Compressed sensing is a powerful rapid imaging approach for Magnetic Resonance Imaging (MRI) and has been applied to many clinical applications. In this work, we propose a new use of sparsity in addition to speed. In particular, we present a novel way of handling respiratory motion using compressed sensing for dynamic contrast-enhanced MRI. The proposed technique, called XD-GRASP (eXtra-Dimensional Golden-angle RAdial Sparse Parallel MRI), sorts the continuously acquired radial k-space data into undersampled contrast phases at multiple respiratory motion states using the self-navigation properties of radial imaging and employs a multidimensional compressed sensing reconstruction to exploit sparsity along both contrast-enhancement and respiratory motion dimensions. XD-GRASP improves image quality and also enables to track respiratory motion during contrast enhancement, which can potentially be of clinical value.
AB - Compressed sensing is a powerful rapid imaging approach for Magnetic Resonance Imaging (MRI) and has been applied to many clinical applications. In this work, we propose a new use of sparsity in addition to speed. In particular, we present a novel way of handling respiratory motion using compressed sensing for dynamic contrast-enhanced MRI. The proposed technique, called XD-GRASP (eXtra-Dimensional Golden-angle RAdial Sparse Parallel MRI), sorts the continuously acquired radial k-space data into undersampled contrast phases at multiple respiratory motion states using the self-navigation properties of radial imaging and employs a multidimensional compressed sensing reconstruction to exploit sparsity along both contrast-enhancement and respiratory motion dimensions. XD-GRASP improves image quality and also enables to track respiratory motion during contrast enhancement, which can potentially be of clinical value.
KW - Compressed sensing
KW - free-breathing imaging
KW - golden-angle radial sampling
KW - motion compensation
UR - http://www.scopus.com/inward/record.url?scp=84944327829&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84944327829&partnerID=8YFLogxK
U2 - 10.1109/ISBI.2015.7164013
DO - 10.1109/ISBI.2015.7164013
M3 - Conference contribution
AN - SCOPUS:84944327829
T3 - Proceedings - International Symposium on Biomedical Imaging
SP - 889
EP - 892
BT - 2015 IEEE 12th International Symposium on Biomedical Imaging, ISBI 2015
PB - IEEE Computer Society
T2 - 12th IEEE International Symposium on Biomedical Imaging, ISBI 2015
Y2 - 16 April 2015 through 19 April 2015
ER -