Table 1 Dose-length product (DLP) and volumetric computed tomography dose index (CTDIvol) for the study common name “CT Head WO”: data from individual hospitals, total and reference values
From: Analysis of a multicentre cloud-based CT dosimetric database: preliminary results
Number of exams/number of scanners | DLP (mGy × cm) Median (25th–75th percentile) | CTDIvol (mGy) Median (25th–75th percentile) | |
|---|---|---|---|
Hospital 1 | 9,961/6 | 853 (798–898) | 54.8 (53.3–57.8) |
Hospital 2 | 5,578/2 | 1,131 (1,004–1,339) | 60.4 (51.3–60.9) |
Hospital 3 | 11,031/4 | 1,017 (830–1,022) | 58.6 (54.8–58.7) |
Hospital 4 | 395/1 | 1,121 (969–1,468) | 68.4 (60.5–76.0) |
Total | 26,965/13 | 1,011 (827–1,024) | 58.6 (53.3–58.9) |
ISTISAN 17/33 [18] | 1,382 | 69.0 | |
RP 180 [19] | 1,000 (760–1,300)* | 60 (50–75)* | |
Canadian survey [20] | 1,276 (1,084–1,463) | 74.4 (60.1–79.1) | |