Ambient dose equivalent rate constant (which is the quotient of l2H* (10) by A, where H* (10) is ambient dose equivalent rate at 10 mm depth due to photons at a distance l from a point source of the nuclide having an activity A) is calculated for 50 nuclides. The limitation of the validity of the quantity is also discussed.
The amino sequence recognizable parathyroid hormones (PTH) in lower and non-lower magnesemic groups in randamized samples were measured by using various kinds of the well established PTH kits. The levels of carboxy terminal, mid-region and intact PTH in lower magnesemic group were more decreased than these in non-lower magnesemic group. It is likely that the shortage of magnesium in serum makes a suppression of PTH secretion.
The clinical significance of osteocalcin in sera of bone tumors were measured in sera of various kinds of bone tumors. The levels of osteocalcin were higher in bone tumors than those in normal subjects. Serum osteocalcin levels in hypercalcemic groups of bone metastasis and myeloma showed a remarkable increase in a parallelism with serum ALPand LDH levels. These results suggested to be directly or indirectly activated on osteoblast by bone tumors and to be synthesized osteocalcin in osteoblast.