Beta-ray photography of lyophilized animal sections.

A new photographic method that images the density distribution of lyophilized animal sections approximately 50 microns in thickness is described. The new method involves sandwiching the animal section between a radiation sensor and a 147Pm planar radiation source. Either conventional photographic film or an imaging plate for radioluminography can be used as the sensor. The method described herein will find promising applications in whole body autoradiography as well as in the study of osteoporosis in experimental animals.