TABLE 1

Residence Times of Source Organs and Remainder of Body Determined from 7 Healthy Subjects

OrganMean residence time (h) ± SD
Brain0.05 ± 0.01
Liver0.30 ± 0.03
Heart wall0.02 ± 0.01
Lungs0.18 ± 0.03
Red marrow0.11 ± 0.04
Bone0.09 ± 0.04
Gallbladder0.22 ± 0.11
Kidneys0.05 ± 0.02
Spleen0.06 ± 0.02
Remainder of body1.43 ± 0.13