Radiography
Signal detection in digital radiography investigated
Published in Medical Letter on the CDC and FDA, October 19th, 2003
According to recent research from the United States, "The usefulness of Fourier-based measures of imaging performance has come into question for the evaluation of digital imaging systems. Figures of merit such as detective quantum efficiency (DQE) based on Fourier domain parameters are relevant for linear, shift-invariant systems with stationary noise. However, no digital imaging system is shift invariant, and realistic images do not satisfy the stationarity condition."
"Our methods for the task-based evaluation of imaging systems, based on signal detectability in the spatial...
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