Diagnostic MR imagings of temporomandibular joint disorders by 1.5 tesla superconducting magnet.

概要

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For diagnostic imaging of temporomandibular joint (TMJ) disorders, 1.5 Tesla superconducting magnet system was applied in 65 patients with 75 joints. MR imaging was performed with GE-Signa 1.5 Tesla MR imaging system with the body coil used as the transmitter and 3 inch surface coil as the receiver. For detecting T1 weighted imaging, the following parameters were used; TR: 1000, TE: 25, Excitation: 1. Data matrix: 256×128, FOV: 8 cm, Slice thickness: 3 mm. For taking T2 weighted imaging, TR: 2200, TE: 80 was used. For anatomical interpretation of TMJ, 3-mm thick images with a 1-mm interspace sagittal multiplane with TR: 1000/TE: 25 sequence was useful, and additional coronal images were beneficial for examining condylar morphology as well as mediolateral disk position. T2weighted imaging obtained the joint effusion suspected of intra-articular inflammation. These findings suggest that MR imaging is useful in the detection and evaluation of TMJ patho-morphology.
特定非営利活動法人日本口腔科学会の論文