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Magnetization transfer contrast on gradient echo MR imaging of the temporomandibular joint



Magnetization transfer contrast on gradient echo MR imaging of the temporomandibular joint



Acta Radiologica 36(3): 295-299



Thirty-nine temporomandibular joints (TMJ) from 20 patients with suspected internal derangements were imaged by a 1.5 T MR imager. The on-resonance binomial magnetization transfer contrast (MTC) pulse was applied to gradient echo images with a dual receiver coil (9 s/section). With the use of an opening device, a series of sequential images were obtained at increments of mouth opening and closing. The tissue signal intensities with (Ms) and without (Mo) MTC were measured and subjective image analysis was performed. Compared with the standard images, MTC technique provided selective signal suppression of disks. The average of Ms/Mo ratio of the disks (0.56) was lower than that of the retrodiskal pad (0.79) and of the effusion (0.89). With MTC technique, fluid conspicuity was superior to standard image. However, no significant superiority was found in disk definition subjectivity.

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Accession: 043573475

Download citation: RISBibTeXText

PMID: 7742126

DOI: 10.3109/02841859509177638


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