Table 5.

SSIM between low dose testing images and full activity images (Mean ± SD)

Group	Input	Model All	Model1	Model2	Model3	Model4	Model5
1	94.57%±2.05% P=0.551	93.41%±1.29%	94.51%±1.46%	94.62%±1.47%	94.45%±1.35%	94.10%±1.24%	93.19%±1.19%
2	91.48%±3.09%	91.64%±1.69%	92.23%±2.21%	92.37%±2.17% P=0.082	92.43%±1.94%	92.29%±1.72%	91.67%±1.49%
3	87.65%±3.95%	89.35%±2.12%	89.26%±2.89%	89.44%±2.81%	89.75%±2.55%	89.92%±2.21%	89.71%±1.79%
4	85.22%±4.28%	87.56%±3.07%	87.35%±3.52%	87.35%±3.30%	87.80%±3.30%	88.12%±3.02% P=0.326	88.21%±2.71%
5	81.00%±6.35%	84.18%±5.04%	83.49%±5.65%	83.49%±5.65%	84.12%±5.43%	84.71%±5.08%	85.30%±4.50%