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Tableau 1
Registre dosimétrique proposé pour les examens NRD, pour les scanners équipés ou non de la reconstruction itérative.
Dose Index Registry proposed for the national diagnostic reference levels (DRLs) exams. Dosimetric data from CT scanners with and without an iterative reconstruction system.
| Scanner sans reconstruction itérative | |||||||
|---|---|---|---|---|---|---|---|
| Type d'examen | Nombre de sites | IDSV (mGy) | CV (%) | Variation IDSV 75e centile − Arrêté NRD | PDL (mGy.cm) | ||
| 75e centile | 25e centile | 75e centile | 25e centile | ||||
| Encéphalea | 31 | 52 | 43 | 16 | −20 | 950 | 760 |
| Thoraxb | 30 | 12 | 9 | 24 | −17 | 480 | 320 |
| TAPb | 17 | 15 | 10 | 27 | −26 | 1 010 | 655 |
| APb | 30 | 15 | 10 | 26 | −14 | 690 | 490 |
| Rachis lombaireb | 30 | 38 | 24 | 30 | −16 | 910 | 640 |
| Scanner avec reconstruction itérative | |||||||
|---|---|---|---|---|---|---|---|
| Type d'examen | Nombre de sites | IDSV (mGy) | CV (%) | Variation IDSV 75e centile − Arrêté NRD | PDL (mGy.cm) | ||
| 75e centile | 25e centile | 75e centile | 25e centile | ||||
| Encéphalea | 80 | 42 | 35 | 16 | −35 | 770 | 630 |
| Thoraxb | 77 | 8 | 6 | 28 | −44 | 330 | 230 |
| TAPb | 62 | 11 | 8 | 24 | −45 | 800 | 520 |
| APb | 87 | 12 | 9 | 24 | −30 | 575 | 385 |
| Rachis lombaireb | 86 | 31 | 21 | 27 | −32 | 810 | 590 |
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