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