Fig. 8.

Comparison of artifact removal capabilities of U-Net and PAT-ADN in in vivo data under different projections. (a)-(d) are the reconstructed results obtained using the UBP method under 8, 16, 32 and 64 projections, respectively. (e)-(h) are the artifact removal results obtained using the U-Net method under 8, 16, 32 and 64 projections, respectively. (i)-(l) are the artifact removal results obtained using the proposed method under 8, 16, 32 and 64 projections, respectively. The white number in the lower left corner indicates PSNR, and the yellow number in the lower right corner indicates SSIM. (m)-(p) are the same ground truth images. (q) and (r) are the close-up images indicated by the red rectangles 1 and 2 in (m), respectively. (s)-(t) show the signal distribution along the red dashed lines in (q) and (r), respectively. GT, ground truth.