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Table 2 1%, 05% and 0.3% low-contrast detectability obtained with Catphan QA

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) Detail at 0.5% contrast (mm) Detail at 0.3% contrast (mm)
300 mAs Standard 2 5 7
280 mAs Standard 3 5 7
260 mAs Standard 3 5 7
240 mAs Standard 3 5 7
220 mAs Standard 3 5 8
200 mAs Standard 3 6 8
180 mAs ISODOSE 1 3 6 9
180 mAs ISODOSE 2 3 6 9
180 mAs ISODOSE 3 3 5 9
180 mAs ISODOSE 4 3 5 8
170 mAs ISODOSE 4 3 6 9
170 mAs ISODOSE 5 3 5 8
170 mAs ISODOSE 6 2 5 9
160 mAs ISODOSE 6 3 5 9
160 mAs IMR1 2 5 6
150 mAs IMR1 2 3 6
140 mAs IMR1 2 3 6
140 mAs IMR2 2 3 5
130 mAs IMR2 2 3 6
130 mAs IMR3 2 2 5
120 mAs IMR3 2 3 6
110 mAs IMR3 2 3 6
100 mAs IMR3 2 3 6
90 mAs IMR3 2 2 5
80 mAs IMR3 2 3 7
70 mAs IMR3 2 3 6
60 mAs IMR3 2 3 6
50 mAs IMR3 2 3 8
40 mAs IMR3 2 4 15
30 mAs IMR3 NE NE NE
25 mAs IMR3 NE NE NE
20 mAs IMR3 NE NE NE
15 mAs IMR3 NE NE NE
  1. NE not evaluated