Comparison of free breathing and respiratory triggered diffusion-weighted imaging sequences for liver imaging

Figure 1 Axial diffusion-weighted images of the liver of a 61-year-old man with a history of hepatocellular carcinoma. The images were obtained with (A) free-breathing diffusion-weighted imaging (DWI), (B) simultaneous multislice DWI and (C) prospective acquisition correction DWI. The qualitative image quality scores of these series were 3, 5 and 5, respectively. Free-breathing DWI demonstrated artifacts on the left liver, seen as signal loss on the left liver compared to the right liver, (white arrows) that were absent on the other 2 sequences.