The electronic heat-camera in medical research

The first part of the paper describes early work on determining skin temperatures by detecting and measuring infra-red radiation. The results of recent measurements have been related to the presence of growths and other conditions beneath and upon the skin. Possibilities exist for reflection spectroscopy by relating the wavelength of the reflected radiation to the constitution of the surface. Pictures built up by scanning techniques are shown and the second part of the paper deals with the design of such equipment. The scanning detector is known as the pyroscan. Finally in the third part of the paper a review is given of the relevant parameters of fast photoconductive cells suitable for use with the pyroscan. The possible application of other techniques for medical diagnosis is also described.