Distribution and tissue dose of intraperitoneally administered radioactive chromic phosphate (32P) in New Zealand white rabbits.

Abstract
Radiophosphorus (32P) has become the preferred radioisotope for i.p. radiotherapy in the adjuvant treatment of ovarian cancer [in humans]. In a study of the distribution and tissue dose of i.p. administered 32P in rabbits, effective half-lives of 32P and the radiation dose absorbed by intra-abdominal tissues were determined. 32P is not uniformly distributed over the peritoneal surfaces and many areas are minimally irradiated. Apparently, a significant fraction of the 32P distribution is systemic and the .beta.-ray dose for intra-abdominal tissues is much lower than suggested by theoretical models.