基于双频监测和全局聚合模块的低剂量Pet重建标准剂量Pet

C. Jiang, Yongsheng Pan, Zhiming Cui, Dinggang Shen
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引用次数: 3

摘要

正电子发射断层扫描(PET)是一种广泛应用于临床的成像技术。为了满足临床诊断的需要,在获取PET图像时需要向体内注射具有放射性的标准剂量示踪剂。为了降低成像辐射危害,同时保持PET图像质量,本文提出了一种从低剂量PET (LPET)图像重构标准剂量PET (SPET)图像的新方法。具体来说,我们首先设计了一个双分支网络,通过分别重建低频分量和高频分量来保留更丰富的高频细节。然后,我们设计了一个全局集成模块,对全局信息进行集成,从而在难以重建的区域获得更好的质量。在真实临床数据集上的验证表明,我们的方法在定性和定量上都优于以前的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reconstruction of Standard-Dose Pet From Low-Dose Pet Via Dual-Frequency Supervision and Global Aggregation Module
Positron emission tomography (PET) imaging is a widely used technology in clinics. To meet the clinical diagnostic requirement, standard-dose tracers with radioactivity need to be injected into the body when acquiring PET images. To reduce imaging radiation hazard while maintain PET image quality, in this paper, we propose a novel and effective approach to reconstruct standard-dose PET (SPET) images from low-dose PET (LPET) images. Specifically, we first design a two-branch network to preserve richer high-frequency details by reconstructing low-frequency component and high-frequency component separately. Then, we design a global integration module to integrate global information for achieving better quality in those difficult-to-reconstruct regions. Validation on a real clinical dataset suggests that our approach outperforms previous methods both qualitatively and quantitatively.
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