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January 16, 1937


JAMA. 1937;108(3):197-202. doi:10.1001/jama.1937.92780030004009

INFRA-RED PHOTOGRAPHY  The development of emulsions sensitive to the infra-red portion of the spectrum has introduced a new phase of clinical photography, for, as Massopust5 has pointed out, the reflection properties of the skin for infra-red light differ from those for visible light, and detail below the surface is apparent where visible light does not penetrate.The limited work which has been done with infra-red emulsions in medicine indicates that the method is chiefly applicable to the study of some skin diseases, the superficial venous system, gross pathologic specimens and, to some extent, photomicrographs.The most popular infra-red material in use is the Eastman Infra-Red Sensitive Plate, Type 1-R. This plate is sensitive to violet and blue light; hence it is essential to exclude this light by means of a filter such as the red Wratten A filter. Infra-Red Sensitive Film Type

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