TL;DR
This study demonstrates the feasibility of DE CBCT technology on the HyperSight imaging system through a novel statistical material specific imaging algorithm and VMI-based CNR improvements and metal artifact reduction.
Objective. Dual-energy (DE) imaging techniques using cone-beam computed tomography (CBCT) have applications for radiotherapy (RT) including material separation and quantification, improved contrast-to-noise ratios (CNR), and reduced metal artifacts. Traditional limitations of CBCT can be addressed by using HyperSight i...
Objective. Characterize the influence of x-ray source filtration on material decomposition (MD) performance in photon-counting computed tomography (PCCT), understanding effects across different filter materials and thicknesses using contrast agents spanning low-Z (iodine, barium) and high-Z (tantalum) compositions. App...
The results demonstrate that the proposed CBC design offers a significant sensitivity advantage, making it highly suitable for high-performance, small-volume clinical applications such as brain and cardiac molecular imaging.
Electron density provides a significantly better CNR for liver metastases with electron density derived from dual-energy computed tomography compared with both conventional and VMI at 40 keV reconstructions, in both the unenhanced and portal-dominant phases.
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