Analysis of image quality and distortion
Board-certified radiologists A and B independently evaluated the image quality and the distortion of parathyroid lesions on DWI. They had access to other MR images (T2- or T1-weighted images or STIR image) for a reference. They were informed that the DWIs were acquired for the preoperative evaluation of PTA, and they were unaware of any other radiologic information. Structural identification and geometric distortion were evaluated using a reported five-point scale (Table 2).(13)