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Pathologic Changes of the Lateral Pterygoid Muscle in Patients with Derangement of the Temporomandibular Joint Disk: Objective Measures at MR Imaging

S.G. Findena, W.S. Enochsa and V.M. Raoa

a From the Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, Pa


Figure 1
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  		Fig 1. Relative percentage of increase in T2 signal intensity of the SHLP.


Figure 2
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  		Fig 2. Example of a normal TMJ with the arrow pointing to a normally positioned disk in relationship to the condylar head. Representative region-of-interest fields have been placed over the superior and inferior heads of the LPM.


Figure 3
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  		Fig 3. Example of anterior disk displacement (arrow) in the closed-mouth position. Representative region-of-interest fields have been placed over the respective muscle bellies.





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X