Abstract #1667
Time-dependent transverse relaxation reveals statistics of structural organization in microbead samples
Alexander Ruh 1 , Philipp Emerich 1 , Harald Scherer 2 , Dmitry S. Novikov 3 , and Valerij G. Kiselev 1
1
Dept. of Radiology, Medical Physics,
University Medical Center Freiburg, Freiburg, Germany,
2
Dept.
of Inorganic and Analytical Chemistry, University
Freiburg, Freiburg, Germany,
3
Bernard and
Irene Schwartz Center for Biomedical Imaging, Department
of Radiology, New York University School of Medicine,
New York, NY, United States
Transverse relaxation in biological tissues is sensitive
to the structural organization of magnetic
inhomogeneities on the cellular level. A recently
developed theory predicts a reflection of this
structural organization in the long-time behavior of the
induced relaxation rate as a power law approach to the
asymptote. Here we present the first direct experimental
verification of such dependence in differently composed
media. Specifically, we observe the theoretically
expected behavior in a microbead phantom with two
different types of structural disorder.
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