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Table 1 Lung shunting fraction, uptake ratio for the spheres, and contrast-to-noise ratio for the four reconstruction methods and two scan times, together with the values as configured in the phantom

From: Accelerated SPECT image reconstruction with FBP and an image enhancement convolutional neural network

 

LSF [%]

Up. 2.0 mL

Up. 4.1 mL

Up. 8.1 mL

Up. 15.7 mL

CNR

True values

5.2

2.7

2.7

2.7

7.7

5 min

FBP

6.4

0.5

0.8

1.0

4.1

6.5

CLINIC

5.1

1.0

1.4

1.5

5.2

10.3

CNN

4.7

1.7

2.3

2.0

6.6

12.1

MC

5.8

2.0

2.3

2.2

6.5

11.0

20 min

FBP

5.3

0.5

0.8

1.0

4.1

6.6

CLINIC

4.7

1.0

1.4

1.5

5.1

10.5

CNN

5.1

1.9

2.3

2.3

7.2

12.5

MC

5.2

2.0

2.2

2.2

6.5

11.6