Table 1 High-contrast resolution results for 50% and 10% MTF, obtained with Catphan QA and CTQA_cp

CT acquisition parameter

MTF (ll/cm) 50%

MTF (ll/cm) 10%

MTF (ll/cm) 50%

MTF (ll/cm) 10%

300 mAs FBP

3.7

6.4

3.0

6.1

280 mAs FBP

3.7

6.3

3.0

6.5

260 mAs FBP

3.7

6.4

3.5

6.1

240 mAs FBP

3.7

6.3

3.0

6.1

220 mAs FBP

3.8

6.5

3.5

6.5

200 mAs FBP

3.9

6.6

3.1

6.5

180 mAs IDOSE 1

3.8

6.5

2.8

6.0

180 mAs IDOSE 2

3.7

6.5

3.1

6.0

180 mAs IDOSE 3

3.8

6.5

3.5

6.5

180 mAs IDOSE 4

3.9

6.6

3.4

6.0

170 mAs IDOSE 4

3.8

6.5

3.0

6.0

170 mAs IDOSE 5

3.8

6.5

3.0

6.1

170 mAs IDOSE 6

3.9

6.7

3.0

6.1

160 mAs IDOSE 6

3.7

6.5

2.9

5.6

160 mAs IMR1

4.2

7.1

3.6

6.5

150 mAs IMR1

4.1

7.1

3.6

6.6

140 mAs IMR1

4.1

6.9

3.5

6.5

140 mAs IMR2

4.0

6.8

3.7

6.4

130 mAs IMR2

4.2

7.1

3.8

6.5

130 mAs IMR3

4.0

6.8

3.5

6.3

120 mAs IMR3

3.9

6.7

3.5

6.0

110 mAs IMR3

4.1

7.0

3.9

6.5

100 mAs IMR3

3.9

6.7

3.5

6.1

90 mAs IMR3

3.9

6.7

3.6

6.1

80 mAs IMR3

4.0

6.8

3.6

6.4

70 mAs IMR3

3.6

6.2

3.5

6.0

60 mAs IMR3

3.8

6.5

3.5

5.9

50 mAs IMR3

3.4

6.0

3.6

5.7

40 mAs IMR3

3.4

6.0

3.2

5.6

30 mAs IMR3

NE

NE

4.4

6.9

25 mAs IMR3

NE

NE

3.5

6.0

20 mAs IMR3

NE

NE

3.7

7.0

15 mAs IMR3

NE

NE

4.0

7.0