CT reconstruction method under sparse angle

• Main Authors: LI BAOLEI, WEI ZENGHUI, ZHANG WENJIE, XU YUANFEI, NIU SUYUN, MO YANG, SUN CUILI
• Format: Patent
• Language: Chinese; English
• Published: 30.01.2024
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention relates to a CT (Computed Tomography) reconstruction method under a sparse angle, belongs to the technical field of CT security check, and solves the technical problem of quickly realizing high-quality image reconstruction. The invention discloses a CT reconstruction method under a sparse angle. The method comprises the following steps: S1, obtaining projection data under the sparse angle through CT equipment; s2, performing primary reconstruction by adopting an analytic reconstruction algorithm to obtain a low-resolution cross-sectional image at a sparse angle; s3, adopting a search box interpolation method to obtain a super-resolution cross-sectional image at a sparse angle; s4, performing re-projection to obtain projection data under full angles; s5, applying a super-resolution generative adversarial network technology to obtain full-angle super-resolution projection data; s6, performing secondary reconstruction by adopting an analytic reconstruction algorithm to obtain a full-angle super-res