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dc.contributor.authorBenavides, E.
dc.contributor.authorBilgen, Mehmet
dc.contributor.authorAl-Hafez, Baraa
dc.contributor.authorAlrefae, T.
dc.contributor.authorWang, Y
dc.contributor.authorSpencer, Paulette
dc.date.accessioned2015-11-18T15:22:07Z
dc.date.available2015-11-18T15:22:07Z
dc.date.issued2014-01-28
dc.identifier.citationBenavides, E., M. Bilgen, B. Al-Hafez, T. Alrefae, Y. Wang, and P. Spencer. "High-resolution Magnetic Resonance Imaging and Diffusion Tensor Imaging of the Porcine Temporomandibular Joint Disc." Dentomaxillofacial Radiology 38.3 (2009): 148-55. http://dx.doi.org/10.1259/dmfr/19195745en_US
dc.identifier.urihttp://hdl.handle.net/1808/18939
dc.descriptionThis is the published version. Copyright © 2014 The British Institute of Radiologyen_US
dc.description.abstractObjectives: Diffusion tensor imaging (DTI) is an MRI modality for characterizing the property, microstructural organization and function in tissues such as the brain and spinal cord. Prior to this investigation, DTI had not been adapted for studies of the temporomandibular joint (TMJ) disc.

Objectives were to test the feasibility of DTI to evaluate the porcine TMJ disc and to use DTI to observe differences in magnitude of anisotropy of water diffusion between TMJ disc regions.

Methods: Five adult pig TMJs were scanned on a 9.4 Tesla horizontal bore MRI scanner using an inductively coupled surface coil. High-resolution gradient-echo and diffusion-weighted spin-echo based images were obtained. The mean diffusivity and fractional anisotropy (FA) were computed in different regions of the disc. Two observers were calibrated to review the two-dimensional and three-dimensional images. Polarized light microscopy was used as the gold standard for collagen fibre orientation.

Results: In the sagittal plane, the mean diffusivity was higher in the posterior (1.28±0.10×10−3 mm−2 s−1) and anterior (1.27±0.08×10−3 mm−2 s−1) bands compared with the intermediate zone (0.96±0.01×10−3 mm−2 s−1), and the FA index was also lowest in the intermediate zone. In the coronal plane, the mean diffusivity was higher in the medial (1.42±0.01×10−3 mm−2 s−1) and lateral (1.21±0.12×10−3 mm−2 s−1) aspects than in the centre (1.09±0.08×10−3 mm−2 s−1), and the FA index was also lowest in the centre.

Conclusions: DTI is a useful method for non-invasively characterizing the structure/property relationships of the porcine TMJ disc.
en_US
dc.publisherBritish Institute of Radiologyen_US
dc.subjectMagnetic resonance imagingen_US
dc.subjectDiffusion tensor imagingen_US
dc.subjectSurface coilen_US
dc.subjectTemporomandibular joint discen_US
dc.titleHigh-resolution magnetic resonance imaging and diffusion tensor imaging of the porcine temporomandibular joint discen_US
dc.typeArticle
kusw.kuauthorSpencer, Paulette
kusw.kudepartmentMechanical Engineeringen_US
dc.identifier.doi10.1259/dmfr/19195745
dc.identifier.orcidhttps://orcid.org/0000-0002-0076-5113
kusw.oaversionScholarly/refereed, publisher version
kusw.oapolicyThis item meets KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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