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The first, second, and third quartile values for CTDIvol (mGy)
| Region | 1st quartile | 2nd quartile (Median) | 3rd quartile |
|---|---|---|---|
| Head, n=607 (34%) | 48.6 | 53 | 59.1 |
| Neck, n=149 (8%) | 11.4 | 13.1 | 14.8 |
| Chest, n=561 (32%) | 5.7 | 8.3 | 10.8 |
| Abdomen, n=464 (26%) | 5.9 | 8.6 | 12.5 |
n represents number of CT scans. Percentage represents the number of scans in that particular region within the total number of scans.
CTDIvol, volumetric computed tomography dose index.
