Mean effective dose and SD (mSv) by device and waist circumference with and without IV contrast
| LightSpeed 16 The p-value (Wilcoxon two-sample test) between waist circumference over and under 100 cm p=0.003 | Plus 4 The p-value (Wilcoxon two-sample test) between waist circumference over and under 100 cm p=0.003 | |||
|---|---|---|---|---|
| Waist circumference | < 100 cm | ≥ 100 cm | < 100 cm | ≥ 100 cm |
| With IV | 13.6 (3.2) | 17.5 (6.1) | 7.4 (1.2) | 8.5 (3.3) |
| Without IV | 10.7 (2.0) | 12.8 (1.9) | 6.2 (0.5) | 7.7 (2.5) |
| All | 12.8 (3.2) | 16.7 (5.9) | 7.2 (1.2) | 8.2 (3.0) |
Patient characteristics at the time of the first whole-body scan
| Characteristic | Value |
|---|---|
| Number of patients | 65 |
| Median age (years) | 28 (range 16.5-39.4) |
| Number of patients with seminoma/non-seminoma | 26/39 |
| Median waist circumference (cm) The waist circumference was measured midway between the lowest rib and the iliac crest from one exial CT image. | 92.2 (range 66.9-126.3) |
| Total number of whole-body CTEs | 279 |
| Mean number of whole-body CTEs/patient | 4.3 (SD 2.6) |
Number of whole body CTEs
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Number of whole-body CTE with IV contrast
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