2026-10-13T15:24:02Z https://www.scidb.cn/oai

10.57760/sciencedb.44400 2026-07-27T19:30:33Z

2026-07-27 Supporting Data for a Physics-Informed Piecewise Quadratic–Delta Model for Sparse Effective-Spectrum Calibration in Photon-Counting X-Ray CT doi:10.57760/sciencedb.44400 en This dataset provides the supporting data for the manuscript entitled “A Physics-Informed Piecewise Quadratic–Delta Model for Sparse Effective-Spectrum Calibration in Photon-Counting X-Ray CT.” It contains the processed numerical and image data underlying the principal results presented in the manuscript.The dataset consists of three components. Figure_source_data.xlsx contains the numerical source data underlying Figures 5, 6, 7, 10, and 12, including the effective-spectrum estimation results, error analyses, noise-robustness evaluations, and related quantitative metrics. Dataset.mat contains the processed numerical image matrices used in the beam-hardening correction, PMMA–iodine projection-domain material decomposition, and water–bone projection-domain material decomposition experiments, corresponding to Figures 8, 9, and 11, respectively. The images folder contains PNG versions of the representative experimental images for convenient visualization and comparison.The data in Dataset.mat are stored as MATLAB numerical arrays and can be accessed and analyzed using MATLAB. The data were processed using MATLAB R2024a. This dataset provides the processed numerical and image data supporting the principal figures and conclusions of the manuscript. Complete raw detector frames and CT projection data are not included because of their large volume and system-specific formats. X-ray CT; Photon-counting; Physics-informed model Li Wenjian PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank