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Table 2
Distribution of reference dose and Acquisition parameters for single acquisitions examinations of all CIs based on the distribution of pooled data for all centers/scanners.
| Clinical indication | Mean Pt Age (years) | Dose index percentiles 50th (25th − 75th) |
Acquisition parameters (mean/sd) | |||||
|---|---|---|---|---|---|---|---|---|
| CTDIvol(mGy) | DLP (mGy.cm) | kVp | mAs | P (mm) |
ST (mm) |
SL | ||
| Trauma/RTA | 39 ± 18 | 61(56-69) | 1273(1133-1657) | 126 ± 10 | 252 ± 114 | 1.4 ± 0.2 | 3.8 ± 1.3 | 23 |
| Stroke/CVA | 52 ± 19 | 61(56-69) | 1166(1023-1426) | 123 ± 7 | 316 ± 138 | 1.5 ± 0.1 | 2.4 ± 1.2 | 20 |
| Brain tumor | 44 ± 18 | 66(60-69) | 1326(1098-1690) | 125 ± 10 | 254 ± 118 | 1.5 ± 0.2 | 2.4 ± 1.7 | 23 |
| Dementia | 70 ± 11 | 61(50-61) | 1023(995-1201) | 121 ± 5 | 336 ± 83 | 1.5 ± 0.0 | 2.3 ± 0.6 | 20 |
| Chest lesion with CKD | 51 ± 18 | 8(5-11) | 313(193-375) | 115 ± 9 | 144 ± 105 | 1.3 ± 0.3 | 3.6 ± 1.8 | 39 |
| Pulmonary embolism | 45 ± 16 | 9(8-9) | 289(261-366) | 120 ± 9 | 172 ± 65 | 1.4 ± 0.2 | 3.8 ± 1.7 | 37 |
| Lung tumor | 52 ± 19 | 9(8-10) | 311(281-359) | 118 ± 10 | 170 ± 83 | 1.5 ± 0.0 | 3.8 ± 1.6 | 40 |
| Abdominopelvic lesion | 50 ± 18 | 10(8-12) | 491(369-580) | 120 ± 7 | 155 ± 82 | 1.4 ± 0.2 | 3.6 ± 1.8 | 49 |
| Kidney stones | 49 ± 17 | 9(7-11) | 453(349-542) | 120 ± 10 | 163 ± 105 | 1.1 ± 0.4 | 3.1 ± 1.8 | 50 |
| Urothelial malignancy | 33 ± 11 | 10(9-14) | 494(423-517) | 123 ± 8 | 156 ± 76 | 1.3 ± 0.4 | 4.3 ± 1.6 | 47 |
Clinical indication; CI, Number; N, examination; exams Tube voltage; kVp, Tube loading; mAs, Pitch; P, Slice thickness; ST, Scan length; SL.
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