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Table 6 Relationship between tonsilllotliths detected on panoramic rediographs and their calsification level on CT

From: Prevalence and imaging characteristics of detectable tonsilloliths on 482 pairs of consecutive CT and panoramic radiographs

Calsifide level on CT (HU) Number of patients detected by CT Number of patients detected by PR Detection rate by PR (%)
<200 51 0 0
200-300 44 0 0
300-400 34 5 14.7
400-500 34 7 20.1
500-600 19 4 21.1
600-700 10 4 40.0
700-800 8 3 37.5
800-900 6 3 50
900-1000 3 1 33.3
100-1100 3 1 33.3
1100-1200 3 2 66.7
>1200 7 5 71.4
Total 222 35 15.8
  1. CT: Computed tomography.
  2. PR: Panoramic radiographs.