Performance characteristics of asymmetric zero-crossover screen-film systems

Phillip C. Bunch

doi:10.1117/12.59484

1 May 1992 Performance characteristics of asymmetric zero-crossover screen-film systems

Phillip C. Bunch

Proceedings Volume 1653, Medical Imaging VI: Image Capture, Formatting, and Display; (1992) https://doi.org/10.1117/12.59484
Event: Medical Imaging VI, 1992, Newport Beach, CA, United States

Abstract

The development of specialized dyes that essentially prevent light from crossing the film base in duplitized screen-film systems has made it possible to design screen-film combinations with unusual performance characteristics. Specifically, by combining front and back screens with differing light emission and resolution properties with asymmetric films with differing front and back sensitometric characteristics, it is now possible to design screen-film systems that have some or all of the following features: (1) density-dependent image blur, (2) previously impractical sensitometric curve shapes, and (3) screen-dependent system contrast. Performance characteristics of two specific systems are summarized, including sensitometric data, contrast transfer functions, noise equivalent quanta, and detective quantum efficiency. Initial clinical applications of this technology are also described, with an emphasis on thoracic radiography.

Citation Download Citation

Phillip C. Bunch "Performance characteristics of asymmetric zero-crossover screen-film systems", Proc. SPIE 1653, Medical Imaging VI: Image Capture, Formatting, and Display, (1 May 1992); https://doi.org/10.1117/12.59484

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