Design of the Multi-Sources Static CT System and its Dual-Energy Monte Carlo Simulation

Abstract

Current medical CTs obtain projection data at different angles by rotating the gantry. However, the gantry rotation introduces vibrations, which cause the blurring of the reconstruction images. Moreover, the limited speed of the gantry rotation limits the possibility of shorter scan time, which makes the clear cardiac imaging difficult. In order to solve the above problems, the multi-sources static CT system is proposed. Instead of rotating the gantry that mounted with the source and detectors, the static CT system uses three line-array sources to avoid any movement during the scan. A Monte Carlo dual-energy thorax CT simulation based on this static CT system is performed. The dual-energy reconstruction and material decomposition results are represented. The good imaging results verify the feasibility of the proposed static CT system. The potential problems and limits of the static CT as well as the further researches are discussed.