Table 1.
Aortic CT numbers for anthropomorphic pediatric phantoms acquired at 80, 100, and 120 kVp
| Tube voltage (kVp) | CT number of aorta (HU) | CT number of mediastinum (HU) | ||
|---|---|---|---|---|
| New born | 1 year old | New born | 1 year old | |
| FBP | ||||
| 80 | 535 (519–541) | 531 (525–535) | 13 (11–14) | 22 (20–25) |
| 100 | 443 (435–451) | 438 (425–440) | 14 (11–15) | 27 (24–31) |
| 120 | 363 (358–367) | 358 (357–360) | 16 (12–17) | 30 (28–33) |
| IR | ||||
| 80 | 533 (522–543) | 532 (528–539) | 12 (10–13) | 21 (19–23) |
| 100 | 433 (428–438) | 430 (423–436) | 13 (11–14) | 26 (24–30) |
| 120 | 362 (359–365) | 362 (359–363) | 15 (13–16) | 29 (27–32) |