RT Journal Article SR Electronic T1 Economizing on Polaroid Films JF Journal of Nuclear Medicine Technology JO J. Nucl. Med. Technol. FD Society of Nuclear Medicine SP 176 OP 176 VO 2 IS 4 A1 Chervu, Shanta A1 Shau, Chung Cheng YR 1974 UL http://tech.snmjournals.org/content/2/4/176.abstract AB The use of three slides, each capable of masking two of the three lenses leaving the third to make an exposure on a tri-lens Polaroid camera of a scintillation camera, is described. Successive use of the three slides during three consecutive exposures results in the recording of three projections of a study on a single print.