Added value of dynamic 3T-MRI to conventional static MRI in evaluation of internal derangement of tempromandibular joint.

Purpose: This prospective study aimed at comparing dynamic T1W fast field echo sequence to the standard static sequences in the evaluation of TMJ disorders using 3T MRI.

Methods: 8 patients, 14 with bilateral symptomatic internal derangement of TMJ and 4 with unilateral symptoms (32 TMJs) were examined, including 17 females and one male. Static T1W, T2W and PD turbo spin-echo sequences in closed and open mouth positions as well as dynamic T1W-FFE sequence were acquired on 3T MRI unit and images were assessed for the articular disc position, morphological disc changes, condylar morphology and translation.