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  • Title: A technique of scatter and glare correction for videodensitometric studies in digital subtraction videoangiography.
    Author: Shaw CG, Ergun DL, Myerowitz PD, Van Lysel MS, Mistretta CA, Zarnstorff WC, Crummy AB.
    Journal: Radiology; 1982 Jan; 142(1):209-13. PubMed ID: 7031761.
    Abstract:
    The logarithmic amplification of video signals and the availability of data in digital form make digital subtraction videoangiography a suitable tool for videodensitometric estimation of physiological quantities. A system for this purpose was implemented with a digital video image processor. However, it was found that the radiation scattering and veiling glare present in the image-intensified video must be removed to make meaningful quantitations. An algorithm to make such a correction was developed and is presented. With this correction, the videodensitometry system was calibrated with phantoms and used to measure the left ventricular ejection fraction of a canine heart.
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