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Auto-Subtractive Subtraction Method Shigeru Fujii 1 1Department of Ophthalmology, Niigata University School of Medicine pp.657-663
Published Date 1973/5/15
DOI https://doi.org/10.11477/mf.1410204962
  • Abstract
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A new subtraction technique modified by the auto-subtraction technique for enhancement of angiographic detail is applied to the fluorescence fundus photograph.

While the method is basically similar to routine subtraction procedure currently in use in pho-tography in that the original negative and re-versed positive films are printed as superim-posure, the latter is made, intentionally, slightly out-of-focus.

This method have severel advantages over the ordinary subtraction method in the following respect.

1) The easy technique of superimposition in this method allows more definite results of sub-traction.


Copyright © 1973, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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