TABLE 2

3H-NE and 123I-MIBG Tissue Concentrations

Radiolabeled compoundTissueSaline pumps (n = 6)NE pumps (n = 9)
3H-NEHeart1.15 ± 0.160.75 ± 0.06*
Right ventricle0.62 ± 0.100.39 ± 0.025*
Left ventricle0.53 ± 0.0610.36 ± 0.06*
123I-MIBGHeart0.91 ± 0.0730.59 ± 0.065*

  • ↵* P < 0.05.

  • Tissue concentrations are expressed in % kg dose/g.