Abstract #3131
Rapid and Accurate T 2 Mapping from Multi Spin Echo Data Using Bloch-Simulation-Based Reconstruction
Noam Ben-Eliezer 1 , Daniel K. Sodickson 1 , and Kai Tobias Block 1
1
Department of Radiology, New York University
School of Medicine, Bernard and Irene Schwartz Center
for Biomedical Imaging, New York, NY, United States
Accurate quantification of T
2
values
in vivo is a long-standing challenge hampered by the
extensive scan times associated with full Spin-Echo (
SE
)
acquisitions, or by the inherent bias of rapid multi-SE
sequences resulting from stimulated and indirect echoes.
Recently, a novel proof-of-principle T
2
mapping
technique the echo-modulation curve (
EMC
)
algorithm has been proposed based on precise Bloch
simulations. In this work we establish the EMC technique
applicability to various body regions, analyze its
accuracy and precision at different SNR levels and
present extensions both to non-Cartesian trajectories
and to multiparametric mapping of T
2
relaxation,
proton density and transmit B
1
+
profile.
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