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European Radiology Experimental

Table 3 1% low-contrast detectability obtained with the model observer in CTQA_cp

From: A simple method for low-contrast detectability, image quality and dose optimisation with CT iterative reconstruction algorithms and model observers

CT acquisition parameter

Detail at 1% contrast (mm)

300 mAs Standard

5.8

280 mAs Standard

7.6

260 mAs Standard

15

240 mAs Standard

0

220 mAs Standard

2

200 mAs Standard

2

180 mAs ISODOSE 1

0

180 mAs ISODOSE 2

2

180 mAs ISODOSE 3

2.2

180 mAs ISODOSE 4

2

170 mAs ISODOSE 4

2.4

170 mAs ISODOSE 5

2.3

170 mAs ISODOSE 6

2

160 mAs ISODOSE 6

2.1

160 mAs IMR1

2

150 mAs IMR1

2

140 mAs IMR1

2.5

140 mAs IMR2

2

130 mAs IMR2

2

130 mAs IMR3

2

120 mAs IMR3

2

110 mAs IMR3

2

100 mAs IMR3

2

90 mAs IMR3

ND

80 mAs IMR3

ND

70 mAs IMR3

ND

60 mAs IMR3

ND

50 mAs IMR3

ND

40 mAs IMR3

ND

30 mAs IMR3

ND

25 mAs IMR3

ND

20 mAs IMR3

ND

15 mAs IMR3

ND

  1. ND not detected by the software
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