Limited projections
5°
15°
30°
45°
60°
90°
180°
Sparse projections
9
16
25
36
49
Sparsity
Low
High
Background
Binary
Background
Sampling strategy
Frangi
Segmentation
Random
Metric
SSIM
PSNR
DICE
LPIPS
Direction
Top
Bottom
Difference
Prediction
Ground truth
0.92
0.94
0.96
0.98
1.00
SSIM
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