Brain SPECT Simulation Using Half-Cone-Beam Collimation and Single-Revolution Helical-Path Acquisition.
Brain SPECT Simulation Using Half-Cone-Beam Collimation and Single-Revolution Helical-Path Acquisition.
复制标题
使用半锥束准直和单转螺旋路径采集进行脑部 SPECT 模拟。
DOI：
10.1109/tns.2007.897826
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发表时间：
2007
影响因子：
1.8
通讯作者：
Metzler,ScottD
中科院分区：
文献类型：
--
作者：
Ter-Antonyan,Ruben;Jaszczak,RonaldJ;Bowsher,JamesE;Greer,KimL;Metzler,ScottD
在这项研究中，与人脑SPECT成像，半锥束准直和螺旋路径数据采集的模拟进行。我们讨论了使用锥束准直的圆轨道采集相关的问题，如肩干扰导致对象截断，和采样不足的对象导致重建图像中的轴向失真。我们证明，三摄像头SPECT系统与半锥束准直和单旋转螺旋路径采集消除了这两个问题，并提供了大幅改善的采样和几乎无伪影重建的对象。
In this study related to human brain SPECT imaging, simulation of half-cone-beam collimation and helical-path data acquisition is performed. We discuss problems related to circular-orbit acquisition using cone-beam collimation, such as shoulder interference resulting in object truncation, and insufficient sampling of the object resulting in axial distortions in the reconstructed images. We demonstrate that a triple-camera SPECT system with half-cone-beam collimation and single-revolution helical-path acquisition eliminates both issues and offers substantially improved sampling and almost artifact-free reconstruction of the object.