Partial volume and aliasing artefacts in helical cone-beam CT.
Partial volume and aliasing artefacts in helical cone-beam CT.
复制标题
螺旋锥束 CT 中的部分体积和混叠伪影。
DOI：
10.1088/0031-9155/49/11/017
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发表时间：
2004
影响因子：
3.5
通讯作者：
Pan,Xiaochuan
中科院分区：
文献类型：
--
作者：
Zou,Yu;Sidky,EmilY;Pan,Xiaochuan
Kudo等人（2000 IEEE Trans.）的准精确算法的推广。医学影像19 902-21)的发展，允许数据采集在一个“实用”框架为临床诊断螺旋，锥束计算机断层扫描（CT）。利用非线性部分体积平均模型对该算法进行了研究。本研究对螺旋锥束CT图像重建中的混叠现象有了深入的了解。针对非线性局部体积和混叠伪影，提出了一种特殊的伪影抑制方案。
A generalization of the quasi-exact algorithms of Kudo et al (2000 IEEE Trans. Med. Imaging 19 902–21) is developed that allows for data acquisition in a'practical'frame for clinical diagnostic helical, cone-beam computed tomography (CT). The algorithm is investigated using data that model nonlinear partial volume averaging. This investigation leads to an understanding of aliasing artefacts in helical, cone-beam CT image reconstruction. An ad hoc scheme is proposed to mitigate artefacts due to the nonlinear partial volume and aliasing artefacts.