Table 1 Xanthine urinary stone CT numbers at different energy levels
From: CT, US and MRI of xanthine urinary stones: in-vitro and in-vivo analyses
Energy level (kVp) | Mean CT number (HU) | Standard deviation | Maximum CT number (HU) | Minimum CT number (HU) |
|---|---|---|---|---|
80 | 330.97 | 51.7 | 409 | 246 |
100 | 321.37 | 63.38 | 410.5 | 216.5 |
120 | 329.69 | 54.18 | 425 | 227 |
140 | 328.45 | 61.13 | 425.2 | 232 |