Tonal and spatial performance characterization for silver-film and pigment-transfer medical laser imagers

Lawrence A. Scarff; Joseph D. Biegel; Ron E. Carbonier

doi:10.1117/12.237851

11 April 1996 Tonal and spatial performance characterization for silver-film and pigment-transfer medical laser imagers

Lawrence A. Scarff, Joseph D. Biegel, Ron E. Carbonier

Proceedings Volume 2708, Medical Imaging 1996: Physics of Medical Imaging; (1996) https://doi.org/10.1117/12.237851
Event: Medical Imaging 1996, 1996, Newport Beach, CA, United States

Abstract

Grayscale accuracy and consistency, along with spatial frequency performance at high and low modulation levels were characterized for two types of 14 by 17-inch medical laser printers; conventional silver-film printers and a dry-process, pigment transfer printer. A total of 180 images of various test targets were created on a silver-film system operating in a clinical environment over a 30 day period. A similar number of films were produced on both a pigment transfer imager and a silver film printer under controlled laboratory conditions. Every care was taken to ensure that all systems were operating within the manufacturer's specifications. Evaluations consisted of objective densitometric measurements from uniform fields, grayscale step tablets, and spatial frequency gratings. Results comparing the tone and spatial performance of these systems are presented.

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Lawrence A. Scarff, Joseph D. Biegel, and Ron E. Carbonier "Tonal and spatial performance characterization for silver-film and pigment-transfer medical laser imagers", Proc. SPIE 2708, Medical Imaging 1996: Physics of Medical Imaging, (11 April 1996); https://doi.org/10.1117/12.237851

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KEYWORDS

Imaging systems

Printing

Silver

Image processing

Spatial frequencies

Transmittance

Calibration

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