Table 19.

Percent contributions to effective dose (hence k factor) from four organ categories: inside (fully inside of the scan coverage^a), peripheral (on the periphery of the scan coverage), distributed (extended beyond the scan coverage on both ends), and outside (fully outside of the scan coverage).

	Male			Female
	Normal	Obese class I	Obese class II	Normal	Obese class I	Obese class III
	(%)	(%)	(%)	(%)	(%)	(%)
Chest-abdomen-pelvis
Inside	85	86	85	83	87	82
Peripheral	5	4	5	6	2	7
Distributed	10	10	10	11	11	11
Outside	0.02	0.02	0.02	0.02	0.03	0.02
Chest
Inside	54	58	53	58	60	70
Peripheral	38	34	38	32	32	21
Distributed	8	8	9	9	8	9
Outside	0.05	0.04	0.2	0.5	0.1	0.1
Abdomen-pelvis
Inside	75	71	69	70	66	69
Peripheral	12	18	22	19	22	19
Distributed	11	10	8	11	11	11
Outside	2	1	0.4	0.2	0.8	0.6
Abdomen
Inside	47	43	39	46	41	44
Peripheral	39	47	54	43	48	45
Distributed	9	9	7	9	9	9
Outside	4	1	1	2	3	2
Pelvis
Inside	50	48	52	39	47	42
Peripheral	30	32	32	43	30	36
Distributed	16	15	11	16	18	17
Outside	4	5	5	2	5	5
Adrenals
Inside	50	47	46	5	7	48
Peripheral	31	34	44	86	85	32
Distributed	17	17	6	7	7	18
Outside	2	2	4	1	1	2
Liver
Inside	52	46	40	48	44	47
Peripheral	37	46	53	43	47	43
Distributed	8	8	6	8	8	8
Outside	4	1	0.8	1	2	2
Kidneys
Inside	10	45	10	51	9	10
Peripheral	81	45	80	39	80	79
Distributed	7	8	7	7	9	9
Outside	2	2	3	3	2	2
Liver-to-kidney
Inside	52	45	39	50	43	46
Peripheral	36	46	54	41	47	44
Distributed	8	8	6	8	9	8
Outside	4	1	0.9	1	2	2
Kidney-to-bladder
Inside	45	40	43	75	50	56
Peripheral	37	46	46	13	38	32
Distributed	12	12	9	11	12	12
Outside	6	1	1	1	0.4	0.5

¹Scan coverage = image coverage + over-ranging distance.