Abstract #1675
Whole-Brain Multi-Parameter mapping using Dictionary learning
Sampada Bhave 1 , Sajan Goud Lingala 2 , Casey P Johnson 1 , Vincent A Magnotta 1 , and Mathews Jacob 1
1
University of Iowa, Iowa City, Iowa, United
States,
2
Electrical
Engineering, University of Southern California, Los
Angeles, California, United States
Quantification of multiple tissue parameters is emerging
as a powerful tool in diagnosing various neurological
and psychiatric diseases. However the major bottleneck
in its routine clinical use is the long acquisition
time. In addition, long acquisition times are likely to
result in motion induced artifacts. In this work, we
propose a dictionary learning based scheme to
simultaneously recover T1ρ and T2 maps. The proposed
method models the data as a weighted linear combination
of basis functions from a dictionary, which is learned
from the measured data.
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