TABLE 1.

Mean Residence Times of Identified Source Organs

	Residence time (h)
Organ	Thin-slice	Bisected	2D planar
Brain	0.086 ± 0.016	0.091 ± 0.010	0.093 ± 0.011
Heart	0.012 ± 0.002	0.019 ± 0.005	0.049 ± 0.011
Kidneys	0.080 ± 0.008	0.101 ± 0.011	0.141 ± 0.015
Liver	0.193 ± 0.064	0.173 ± 0.042	0.195 ± 0.060
Lungs	0.462 ± 0.106	0.459 ± 0.087	0.450 ± 0.098
Red marrow	0.283 ± 0.064	0.106 ± 0.027	0.093 ± 0.036
Testes	0.003 ± 0.001	0.006 ± 0.001	0.010 ± 0.002
Thyroid	0.003 ± 0.0003	0.004 ± 0.002	0.008 ± 0.002
Remainder of body	0.538 ± 0.072	0.767 ± 0.072	0.742 ± 0.057

Values are mean ± SD of 7 subjects.