Dual spectral limited-angle CT imaging regularized by edge-preserving diffusion and smoothing

Autor:	Yanwei Qin, Yinghui Zhang, Xin Lu, Peng Zhang, Yunsong Zhao
Rok vydání:	2023
Předmět:	History Radiation Polymers and Plastics Radiology Nuclear Medicine and imaging Business and International Management Electrical and Electronic Engineering Condensed Matter Physics Instrumentation Industrial and Manufacturing Engineering
Zdroj:	Journal of X-Ray Science and Technology. 31:573-592
ISSN:	1095-9114 0895-3996
DOI:	10.3233/xst-221302
Popis:	Limited-angle CT scan is an effective way for nondestructive inspection of planar objects, and various methods have been proposed accordingly. When the scanned object contains high-absorption material, such as metal, existing methods may fail due to the beam hardening of X-rays. In order to overcome this problem, we adopt a dual spectral limited-angle CT scan and propose a corresponding image reconstruction algorithm, which takes the polychromatic property of the X-ray into consideration, makes basis material images free of beam hardening artifacts and metal artifacts, and then helps depress the limited-angle artifacts. Experimental results on both simulated PCB data and real data demonstrate the effectiveness of the proposed algorithm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b630001b2d80f591a13c47e1cce9e68 https://doi.org/10.3233/xst-221302 Zobrazit plný text záznamu