Static CT Imaging Method Based on Multi-Line Array X-Ray Sources

摘要: Static computed tomography (CT) is an advanced 3D measurement technology. It offers key instrumentation advantages by reducing motion-induced artifacts, preserving measurement accuracy, and lowering radiation dosescritical factors for precision systems. This capability is particularly crucial for imaging moving organs such as the heart. This study introduces a novel Multi-Array Stationary CT (MASCT) imaging architecture.Utilizing cold-cathode carbon nanotube X-ray sources, the proposed architecture achieves dual innovations in temporal and spatial resolution, advancing stationary CT instrument design. Firstly, the X-ray sources rapid response allows for swift data acquisition. Coupled with its low power consumption and compact form factor, these characteristics collectively facilitate high temporal resolution, meeting the demands of dynamic imaging. Second, the densely arranged source array enhances angular resolution, while the z-axis MAS configuration ex tends scanning capacity for elongated objects, thereby expanding spatial resolution across multiple dimensions. To address practical implementation challenges, we incorporate iterative reconstruction algorithms to solve limited-angle problem, achieving diagnostically acceptable image quality. The feasibility of our multi-array X-ray source-based static CT system is rigorously validated through both numerical simulations and physical experiments.