Table 2.

Organ dose per unit CTDI_vol (mGy/mGy) for the four major tissue sites and the lymphocyte in the pediatric and adult male and female phantoms simulated for brain, chest, and abdomen CT scans.

Scan type	Organs and tissues	Age (year) and gender (M/F) of phantoms
		00 MF	01 MF	05 MF	10 MF	15 F	15 M	Adult F	Adult M
Brain scan	Red bone marrow	0.30	0.35	0.30	0.16	0.10	0.11	0.05	0.05
	Blood	0.10	0.11	0.08	0.05	0.04	0.04	0.04	0.03
	Lymphatic organs	0.03	0.02	0.02	0.01	0.01	0.01	0.01	0.01
	Outside hematopoietic tissue	0.20	0.18	0.12	0.07	0.05	0.05	0.05	0.03
	Lymphocyte	0.17	0.17	0.11	0.07	0.05	0.05	0.04	0.03
Chest scan	Red bone marrow	0.84	0.69	0.39	0.40	0.35	0.35	0.39	0.31
	Blood	1.10	0.86	0.69	0.63	0.52	0.53	0.47	0.45
	Lymphatic organs	1.04	0.72	0.44	0.35	0.32	0.27	0.21	0.21
	Outside hematopoietic tissue	0.67	0.39	0.36	0.38	0.29	0.37	0.26	0.28
	Lymphocyte	0.74	0.44	0.37	0.38	0.29	0.36	0.27	0.27
Abdomen scan	Red bone marrow	0.47	0.33	0.23	0.26	0.27	0.23	0.25	0.22
	Blood	0.81	0.53	0.54	0.44	0.41	0.37	0.32	0.35
	Lymphatic organs	1.36	1.00	1.00	1.07	0.88	0.73	0.81	0.67
	Outside hematopoietic tissue	0.59	0.32	0.38	0.34	0.25	0.27	0.21	0.26
	Lymphocyte	0.71	0.40	0.45	0.40	0.30	0.31	0.25	0.28