English(EN) TRACE: Two-Stage Detector-Response Estimation With Angular Cosine Expansion for Ring Artifact Correction in Photon-Counting CT

TRACE方法校正光子计数CT扫描中的环状伪影

作者 PulseAugur 编辑部 · [1 个来源] · 2026-09-15 04:00

一种名为TRACE 的新方法已被开发出来，用于校正光子计数探测器计算机断层扫描 (PCD-CT) 扫描中的环状伪影。这种无监督的两阶段投影图分解技术可以估计和校正由探测器响应不均匀性引起的误差。TRACE 使用固定偏差结合低阶离散余弦变换 (DCT) 分量来表示这些误差，从而能够描述角度变化。在模型数据上的实验表明，TRACE 能有效减少环状伪影并提高图像均匀性，同时保持图像细节和清晰度。 AI

影响引入了一种用于提高光子计数CT图像质量的新方法，有望提高诊断准确性。

排序理由发表了一篇详细介绍医学成像伪影校正新方法的学术论文。[lever_c_demoted from research: ic=1 ai=0.7]

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报道来源 [1]

arXiv cs.CV TIER_1 English(EN) · Jigang Duan, Heran Wang, Ligen Shi, Zheng Sun, Ping Yang, Xing Zhao · 2026-09-15 04:00

TRACE：用于光子计数CT中环状伪影校正的两阶段检测器-响应估计与角度余弦展开

arXiv:2609.15834v1 Announce Type: new Abstract: Detector response nonuniformity introduces systematic projection errors and ring artifacts in photon-counting detector computed tomography (PCD-CT). In measured PCD-CT data, residual stripe amplitudes vary slowly with projection ang…

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报道来源 [1]

TRACE：用于光子计数CT中环状伪影校正的两阶段检测器-响应估计与角度余弦展开

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