PT  - JOURNAL ARTICLE
AU  - Wang, E.Y.
AU  - Mulholland, T.P.
AU  - Pramanik, B.K.
AU  - Nusbaum, A.O.
AU  - Babb, J.
AU  - Pavone, A.G.
AU  - Fleisher, K.E.
TI  - Dynamic Sagittal Half-Fourier Acquired Single-Shot Turbo Spin-Echo MR Imaging of the Temporomandibular Joint: Initial Experience and Comparison with Sagittal Oblique Proton-Attenuation Images
AID  - 10.3174/ajnr.A0487
DP  - 2007 Jun 01
TA  - American Journal of Neuroradiology
PG  - 1126--1132
VI  - 28
IP  - 6
4099  - http://www.ajnr.org/content/28/6/1126.short
4100  - http://www.ajnr.org/content/28/6/1126.full
SO  - Am. J. Neuroradiol.2007 Jun 01; 28
AB  - BACKGROUND AND PURPOSE: Our aim was to assess dynamic half-Fourier acquired single-shot turbo spin-echo (HASTE) MR imaging of the temporomandibular joint (TMJ) using parallel imaging, in comparison with static proton density (Pd) imaging.MATERIALS AND METHODS: Thirty-four TMJs from 17 subjects (7 volunteers, 10 patients) were imaged in a multichannel head coil on a 1.5T magnet by using a 35-second dynamic sagittal HASTE acquisition (TR/TE, 1180/65 msec; matrix, 128 × 128; section thickness, 7 mm; 30 images) and sagittal oblique Pd in closed- and open-mouthed positions (TR/TE, 1800/12 msec; matrix, 256 × 256; section thickness, 2 mm; 15 sections). Images were reviewed by 3 readers and rated for confidence of disk position, presence of motion artifact, range of motion, and presence of disk displacement on a 5-point scale. Consensus review of cases was also performed to assess disk dislocation and limited range of motion.RESULTS: More static examinations were rated as having motion artifact (19.6% versus 6.9%, P = .016), limited range of motion (30.4% versus 17.7%, P = .016), and disk dislocations (31.4% versus 22.6%, P = .071). Confidence ratings were higher on dynamic examinations (4.11 versus 3.74, P = .018). Chi-squared tests demonstrated no significant difference in consensus reviews of the 2 examination types.CONCLUSION: Dynamic HASTE TMJ MR imaging is a time-efficient adjunct to standard MR imaging protocols, producing fewer motion artifacts, additional range of motion information, and a dynamic assessment of disk position, when compared with static imaging. Further study is needed to evaluate the role of this sequence in diagnosing disk displacement.