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Table 2 Dose-length product (DLP) and volumetric computed tomography dose index (CTDIvol) for the study common name “CT Chest 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 3,513/5 268 (194–335) 7.4 (5.9–8.5)
Hospital 2 1,003/2 323 (232–468) 7.1 (5.9–8.8)
Hospital 3 2,026/4 247 (169–345) 6.1 (4.9–8.5)
Total 6,542/11 268 (190–349) 7.0 (5.4–8.5)
ISTISAN 17/33 [18] 754 15.0
RP 180 [19] 400 (270–700)* 10 (10–30)*
Canadian survey [20] 302 (197–440) 8.5 (5.7–13.0)
  1. *Most common value (range)