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Cinematic study of temporomandibular joint motion using ultra-fast magnetic resonance imaging.
Cranio 1999; 17(4):262-7C

Abstract

Magnetic Resonance Images (MRI) of the temporomandibular joint (TMJ) are usually performed to study the opening/closing movements of the mandible and have up to now been pseudodynamic step-by-step images simulating condylar motion by post-processing reconstruction. The aim of this study was: 1. to optimize a TMJ cine-imaging method to give a better clinical result than the step-by-step methods; 2. to develop an ultra-fast MRI Gradient Echo (GE) sequence for this purpose; and 3. to analyze condylar movements in the sagittal, coronal and para-axial planes during border mandibular displacements and chewing. Both TM joints were studied in six asymptomatic volunteers. The method involved a compromise between in-plane resolution, slice thickness, signal-to-noise ratio and time resolution. Routine clinical use was found to be a GE pulse sequence providing three images per second with an isometric voxel resolution of approximately two millimeters in ridge. This did not allow visualization of the disk. Using this sequence enabled real and simultaneous condylar displacement observation in the three planes of space and therefore contributed to a better functional diagnosis of pathologic TMJ motions.

Authors+Show Affiliations

Laboratoire de Résonance Magnétique en Biologie et Médecine Faculte de Médecine, Rennes, France. lrmbm@univ-rennes1.fr

Pub Type(s)

Journal Article

Language

eng

PubMed ID

10650398

Citation

Manière-Ezvan, A, et al. "Cinematic Study of Temporomandibular Joint Motion Using Ultra-fast Magnetic Resonance Imaging." Cranio : the Journal of Craniomandibular Practice, vol. 17, no. 4, 1999, pp. 262-7.
Manière-Ezvan A, Havet T, Franconi JM, et al. Cinematic study of temporomandibular joint motion using ultra-fast magnetic resonance imaging. Cranio. 1999;17(4):262-7.
Manière-Ezvan, A., Havet, T., Franconi, J. M., Quémar, J. C., & de Certaines, J. D. (1999). Cinematic study of temporomandibular joint motion using ultra-fast magnetic resonance imaging. Cranio : the Journal of Craniomandibular Practice, 17(4), pp. 262-7.
Manière-Ezvan A, et al. Cinematic Study of Temporomandibular Joint Motion Using Ultra-fast Magnetic Resonance Imaging. Cranio. 1999;17(4):262-7. PubMed PMID: 10650398.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cinematic study of temporomandibular joint motion using ultra-fast magnetic resonance imaging. AU - Manière-Ezvan,A, AU - Havet,T, AU - Franconi,J M, AU - Quémar,J C, AU - de Certaines,J D, PY - 2000/1/29/pubmed PY - 2000/1/29/medline PY - 2000/1/29/entrez SP - 262 EP - 7 JF - Cranio : the journal of craniomandibular practice JO - Cranio VL - 17 IS - 4 N2 - Magnetic Resonance Images (MRI) of the temporomandibular joint (TMJ) are usually performed to study the opening/closing movements of the mandible and have up to now been pseudodynamic step-by-step images simulating condylar motion by post-processing reconstruction. The aim of this study was: 1. to optimize a TMJ cine-imaging method to give a better clinical result than the step-by-step methods; 2. to develop an ultra-fast MRI Gradient Echo (GE) sequence for this purpose; and 3. to analyze condylar movements in the sagittal, coronal and para-axial planes during border mandibular displacements and chewing. Both TM joints were studied in six asymptomatic volunteers. The method involved a compromise between in-plane resolution, slice thickness, signal-to-noise ratio and time resolution. Routine clinical use was found to be a GE pulse sequence providing three images per second with an isometric voxel resolution of approximately two millimeters in ridge. This did not allow visualization of the disk. Using this sequence enabled real and simultaneous condylar displacement observation in the three planes of space and therefore contributed to a better functional diagnosis of pathologic TMJ motions. SN - 0886-9634 UR - https://www.unboundmedicine.com/medline/citation/10650398/Cinematic_study_of_temporomandibular_joint_motion_using_ultra_fast_magnetic_resonance_imaging_ DB - PRIME DP - Unbound Medicine ER -