MRI is the gold standard due to its superior contrast resolution. Understanding the anatomic and pathologic features of all joint components is necessary to assess the position of the articular disc: capsular thickenings can mimic the articular disc. Short scanning time tmj dynamic allows maximum mouth opening, which eliminates false-positive results of a stuck TMJ disc. The articular disc is better differentiated on PD with long TE (39-49), between T2 (TE=80-100) and PD (TE= 20-30).