Diagnostic reference levels based on clinical indications for paediatric computed tomography examinations at the Mohammed VI University Hospital Center in Marrakech-Morocco

Open Access

Table 2

Acquisitions parameters and ours DRL CI of paediatric head CT scans by age group of children.

CI of the head CT	Age group (Years)	Tube voltage (kV)	Tube charge (mAs)	Number of series	Explored length (cm)	Pitch	Our study

		Min-Mean-Max	Min-Mean-Max	Min-Mean-Max	Min-Mean-Max	Min-Max	P75 CTDI _vol (mGy)	P75 DLP (mGy.cm)
Tumor/Mass	1–5	110–110–110	53–129–160	1–1.6–4	21–54–84	0.5–0.8	22	1321
	5–10	110–112–130	105–140–172	1–2.5–4	17–51–84	0.5–0.8	24	1328
	10–15	110–113–130	112–144–171	1–2.5–5	20–53–91	0.5–0.8	26	1708
Cellulite	1–5	110–110–110	34–84–154	2–2.5–5	24–42–79	0.5–0.8	20	849
	5–10	110–113–130	44–96–206	2–2.6–4	26–49–54	0.5–0.8	22	1247
	10–15	110–119–130	45–104–161	1–2.5–4	20–47–90	0.5–0.8	29	1306
Hydrocephalus	1–5	110–110–110	97–131–167	1–1-1	14–24–58	0.5–0.5	22	533
	5–10	110–114–130	109–141–172	1–1.1–2	16–25–34	0.5–0.8	25	787
	10–15	110–121–130	117–152–189	1–1-1	16–23–31	0.5–0.8	38	875
Convulsive Crisis	1–5	110–110–110	83–129–160	1–1-1	15–22–40	0.5–0.5	22	486
	5–10	110–112–130	111–134–172	1–1.1–2	17–22–27	0.5–0.8	22	553
	10–15	110–118–130	121–148–198	1–1-2	17–23–45	0.5–0.8	38	808
Trauma/ Hemorrhage	1–5	110–110–110	105–129–153	1–1-1	16–25–56	0.5–0.5	21	498
	5–10	110–114–130	111–141–215	1–1-2	19–26–46	0.5–0.8	24	757
	10–15	110–121–130	115–149–187	1–1-1	18–25–36	0.5–0.8	38	991

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