2022
DOI: 10.1088/1361-6560/ac6201
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Adaptive dual-energy algorithm based on pre-calibrated weighting factors for chest radiography

Abstract: Objective: To develop a dual-energy (DE) algorithm with spatially varying weighting factors for material selection and noise suppression. Approach: Calibration step-phantoms, with overlapping slabs of solid water and bone with different thicknesses, were used to obtain the pre-calibrated material selection and noise reduction weighting factors. The Material selection weighting factors were calculated by finding a zero of contrast-to-noise-ratio (CNR) between regions with two overlapping materials and regions o… Show more

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