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Updated: Sep 30, 2026
Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
Published on: August 30, 2013
Signal-to-noise ratio and detective quantum efficiency analysis of optically coupled CCD mammography imaging systems
H Liu1, L L Fajardo, B C Penny
1Department of Radiology, University of Virginia Health Sciences Center, Charlottesville 22908, USA.
Rationale And Objectives:
Design considerations for x-ray systems with optically coupled charge-coupled devices require an understanding of the characteristics of cascaded multistage imaging chains. Performance evaluations rely on accurate analyses of signal-to-noise ratio, noise power spectrum, and detective quantum efficiency.
Methods:
Theoretic models of signal-to-noise ratio, noise power spectrum, and detective quantum efficiency were extended to analyze the optically coupled charge-coupled device and other electronic x-ray imaging systems. The descriptions of how to measure or compute these parameters are provided.
Results:
The results of our quantitative analysis illustrate that x-ray quantum-noise limitation can be obtained without an image intensifier by using a low additive noise charge-coupled device.
Conclusion:
This theoretic model and experimental method provide a useful tool for developing optoelectronic x-ray imaging systems for digital mammography and other radiologic procedures.
