1Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871 2Department of Control Technology and Instrumentation, College of Quality and Technical Supervision, Hebei University, Hebei 071002 3General Hospital of Chinese People's Liberation Army, Beijing 100039
Abstract：Monte Carlo simulation is applied to investigate the off-axis effect in keel-edge pinhole single photon emission computed tomography imaging. Aiming at finding the effective field of view (FOV) for imaging, we simulate point source in off-axis imaging (0, 4, 8 and 12 mm from the central rotation axis) of different collimator designs (channel height with 1.38, 1 and 0.5 mm) with a fixed aperture diameter. Tradeoff curves of rms resolution and sensitivity are plotted to determine the effective FOV for different channel height pinhole collimators. The parameterized model can be further incorporated into image reconstruction algorithms, which compensates for the off-axis effect and is used as a reference for multi-pinhole design.
. [J]. 中国物理快报, 2016, 33(04): 48701-048701.
Su-Ying Li, Zhao-Heng Xie, Zhi-Yu Huang, Kun Yang, Bai-Xuan Xu, Qiu-Shi Ren. Off-Axis Imaging in Keel-Edge Pinhole Single Photon Emission Computed Tomography System Based on Monte Carlo Simulation. Chin. Phys. Lett., 2016, 33(04): 48701-048701.
2016, Vol. 33 
