Vascular changes in the urinary bladder wall after irradiation (an experimental study in rabbits with angiography and scanning electron microscopy of vascular casts).

Seven adult rabbits were used to study radiation-induced vascular changes in the urinary bladder by angiography and scanning electron microscopy of vascular casts. The angiographic studies, in which a magnification techniques was used, revealed a state of hypervascularization in the irradiated area of the bladder. With the angiographic method, however, it was not possible to visualize specific radiation-induced vascular changes within the irradiated area of the urinary bladder. Scanning electron microscopy of vascular casts made possible a detailed study of finer vessels in which typical radiation changes, teleangiectases, could be demonstrated.