Table 3 Subjective comparison of TFI and FBP at the same tube current–time products: CT findings.

From: The evaluation of the reduction of radiation dose via deep learning-based reconstruction for cadaveric human lung CT images

Tube current time products (mAs)

Score

 

10

25

50

75

100

Noise

TFI

1.2 ± 0.4*

1.7 ± 0.5*

2.0 ± 0.0*

2.3 ± 0.4*

2.0 ± 0.0*

FBP

4.8 ± 0.4*

4.5 ± 0.5*

3.8 ± 0.4*

3.5 ± 0.5*

3.6 ± 0.5*

Streak artifact

TFI

3.0 ± 0.0

2.3 ± 0.5*

2.1 ± 0.3*

1.8 ± 0.4*

2.1 ± 0.3*

FBP

3.0 ± 0.0

3.5 ± 0.5*

4.3 ± 0.4*

3.7 ± 0.5*

3.8 ± 0.4*

Overall image quality

TFI

4.2 ± 0.4*

4.0 ± 0.0*

4.0 ± 0.0*

4.0 ± 0.0*

4.0 ± 0.0*

FBP

1.8 ± 0.4*

1.8 ± 0.4*

2.0 ± 0.0*

2.5 ± 0.5*

2.4 ± 0.5*

  1. Scores are presented as mean ± SD. Scores of subjective image analysis were statistically analyzed using the Mann–Whitney’s U test.
  2. *There was a significant difference between TFI and FBP at the same tube current–time products (p < 0.05).
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