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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