Figure 2

Qualitative analysis of all four sequences for each patient ( n = 25) by two readers (R1/R2). For anatomic distinction of the floor of the mouth (with 1 = good depiction of anatomical structures, 2 = structures visible with slight blurring, 3 = oral cavity visible with substantial blurring, 4 = oral cavity only partially visible, and 5 = oral cavity not assessable) as well as blurring caused by dental alloys and image noise assessed on a five-point scale (1 = no artifacts, 2 = barely visible artifacts, 3 = visible artifacts without diagnostic impairment, 4 = diagnostic impairment, and 5 = severe artifacts, non-diagnostic).