Abstract #0936
Dental MRI can detect micro-cracks
Djaudat Idiyatullin 1 , Michael Garwood 1 , and Donald Nixdorf 2
1
CMRR, Radiology Department, University of
Minnesota, Minneapolis, Minneaota, United States,
2
Division
of TMD & Orofacial Pain and Department of Neurology,
University of Minnesota, Minneapolis, Minneaota, United
States
This work demonstrates that dental MRI using SWIFT
identifies cracks of about 20 μm thickness and larger,
which is one order of magnitude smaller than the image
voxel, within the dentin of teeth. To explain this
phenomenon, a dental digital MRI model based on known 1H
relaxation parameters in dental tissues is proposed. The
comparison of simulated and experimental data helps to
understand the mechanisms of contrast observed in SWIFT
images of cracked teeth. The similarity of dentin and
cortical bone allows the generalization of the proposed
model for studies other bone pathologies.
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