Detection of Tc-99m labelled albumin particles in the Fallopian tubes after intraperitoneal deposition

Autoradiography strongly indicated that Tc-99m labelled particles deposited into the pouch of Douglas were transported to the Fallopian tubes. The small uptake of radioactivity identified in blood was most likely due to a rapid diffusion of free Tc-99m pertechnetate from the peritoneal cavity. The radioactivity identified in cervical mucus could be pertechnetate or labelled albumin particles or a combination of both. Future development of the present technique may be used for fertility investigation.