Table 4 Distributions of CT numbers in tonsilloliths and ratios of change in CT number during the follow-up period
From: Changes in tonsillolith characteristics detected in a follow-up CT study
CT number on initial CT (HU) | Increase in CT number | No change | Decrease in CT number | Total number | |||
|---|---|---|---|---|---|---|---|
n | Ratio (%) | n | Ratio (%) | n | Ratio (%) | ||
< 200 | 52 | 89.7 | 2 | 3.4 | 4 | 6.9 | 58 |
200–300 | 23 | 85.2 | 0 | 0.0 | 4 | 14.8 | 27 |
300–400 | 15 | 75.0 | 0 | 0.0 | 5 | 25.0 | 20 |
400–500 | 7 | 77.8 | 2 | 22.2 | 0 | 0.0 | 9 |
500–600 | 6 | 85.7 | 0 | 0.0 | 1 | 14.3 | 7 |
600–700 | 4 | 100.0 | 0 | 0.0 | 0 | 0.0 | 4 |
700–800 | 1 | 100.0 | 0 | 0.0 | 0 | 0.0 | 1 |
800–900 | 2 | 66.7 | 0 | 0.0 | 1 | 33.3 | 3 |
900–1000 | 1 | 33.3 | 0 | 0.0 | 2 | 66.7 | 3 |
1000 < | 2 | 100.0 | 0 | 0.0 | 0 | 0.0 | 2 |
Total | 113 | 84.3 | 4 | 3.0 | 17 | 12.7 | 134 |