From: Analysis of a multicentre cloud-based CT dosimetric database: preliminary results
DLP all hospitals (mGy × cm) | CTDIvol all hospitals (mGy) | Number of exams | |||||
---|---|---|---|---|---|---|---|
Median | 25th percentile | 75th percentile | Median | 25th percentile | 75th percentile | ||
CT Head WO | |||||||
In line with SCN (A) | 933 | 798 | 1022 | 58.6 | 54.2 | 58.9 | 25,252 |
All data (B) | 1011 | 827 | 1024 | 57.8 | 53.3 | 58.9 | 26,965 |
Δ = (B - A)/B | + 7.7% | + 3.5% | + 0.2% | -1.4% | -1.7% | 0.0% | |
CT Chest WO | |||||||
In line with SCN (A) | 274 | 205 | 349 | 7.2 | 5.7 | 8.6 | 5,994 |
All data (B) | 268 | 190 | 349 | 7.0 | 5.4 | 8.5 | 6,542 |
Δ = (B - A)/B | -2.2% | -7.9% | 0.0% | -2.9% | -5.6% | -1.2% | |
CT Abd/Pelv WO | |||||||
In line with SCN (A) | 553 | 438 | 710 | 11.2 | 9.0 | 14.0 | 1,512 |
All data (B) | 569 | 446 | 769 | 11.2 | 8.9 | 14.0 | 1,692 |
Δ = (B - A)/B | + 2.8% | + 1.8% | + 7.7% | 0.0% | -1.1% | 0.0% |