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Alternative TitleA removal method of CT cone angle artifact on the basis of guided filter
佟丽霞1; 李双学1; 楼珊珊1; 程景烨1; 臧传治2
Source Publication中国医学装备
Contribution Rank2
Funding Organization国家自然科学基金(U1708261)“医用多级能谱CT低剂量精准成像新方法及管件技术研究”
Keyword锥角伪影 锥形束CT(CBCT) 滤波反投影 权重函数 引导滤波


Other Abstract

Objective: To design a high signal-to-noise ratio (SNR) method that could remove cone angle artifacts in spiral scanning so as to improve the image quality for spirally large cone angle detectors. Methods: This article analyzed the causes of spiral cone angle artifacts from using data. Through implemented different weighted approach for these data that produced spiral cone angle artifacts, and used weighted filtering back-projection algorithms to obtain high SNR images with cone angle artifact and low SNR images without cone angle artifacts. The low SNR images combined with high SNR images to use guided filtering mode so as to realize the remove for cone angle artifacts of high SNR images. Results: Through used clinical data to compare weighted filtering back-projection algorithms and original algorithms. And the cone angle artifacts in the image were effectively suppressed. At the same time, the SNR of former reconstruction method was maintained. Conclusion: The high SNR method for removing cone angle artifacts can effectively suppress cone angle artifacts and improve image quality of spiral detector with large cone angle when ensures high SNR images.

Document Type期刊论文
Corresponding Author臧传治
Recommended Citation
GB/T 7714
佟丽霞,李双学,楼珊珊,等. 一种基于引导滤波的CT锥角伪影去除方法研究[J]. 中国医学装备,2020,17(7):21-24.
APA 佟丽霞,李双学,楼珊珊,程景烨,&臧传治.(2020).一种基于引导滤波的CT锥角伪影去除方法研究.中国医学装备,17(7),21-24.
MLA 佟丽霞,et al."一种基于引导滤波的CT锥角伪影去除方法研究".中国医学装备 17.7(2020):21-24.
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