Fig. 2

Images for subjective quality assessment. a, b: Assessment of sharpness and lesion conspicuity (gallbladder adenomyomatosis). a: r-FOV DWI image shows the soft tissue signal at the bottom of the gallbladder with a sharp margin, and the lesion features are clearly demonstrated. Subjective image quality scores of sharpness and lesion conspicuity are both 3. b: f-FOV DWI image shows the soft tissue signal at the bottom of the gallbladder with blurred edges and lower contrast comparing with Fig. A. The subjective image quality scores of sharpness and lesion conspicuity are both 2. c, d (gallbladder adenoma): Assessment of artifacts. c: r-FOV DWI image shows mild artifacts around the wall of the gallbladder. Subjective image quality score of artifacts is 4. d, f-FOV DWI image shows obvious artifacts. Subjective image quality score of artifacts is 3. e, f (gallbladder adenocarcinoma): Assessment of distortion. e: r-FOV DWI image shows a diffusion-restricted lesion at the bottom of the gallbladder without distortion. Subjective image quality score of distortion is 4. f: f-FOV DWI image shows the edge of the lesion with obvious distortion. Subjective image quality score of distortion is 2