Once again, the proceedings of the Badgastein Symposium, this one being the 22nd in an uninterrupted series, offer a comprehensive record of the scientific events. Highlights at this meeting were certainly reports ofthe exciting new developments ofpositron imaging with Anger cameras, both with conventional high-energy collimators and with coincidence techniques. Preliminary c1inical results are promising and seem to offer a true alternative to sophisticated PET -technology with its for many laboratories prohibitive costs. The general nature ofthe symposium is documented by the large range...