Publications by authors named "Lieza Vanden Broeke"
Spectral computed tomography (CT) has attracted much attention in radiation dose reduction, metal artifacts removal, tissue quantification and material discrimination. The x-ray energy spectrum is divided into several bins, each energy-bin-specific projection has a low signal-noise-ratio (SNR) than the current-integrating counterpart, which makes image reconstruction a unique challenge. Traditional wisdom is to use prior knowledge based iterative methods.
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- The paper presents a method for assessing x-ray beam properties using both experimental and modeled data with a small-animal spectral scanner.
- Key measurements include the shape of the beam profile, angular offsets, and differences in photon counts between experimental and modeled data.
- The method demonstrates high precision, with minimal count errors and variations, and can identify system performance issues, ultimately improving the reliability and accuracy of spectral CT imaging.