J-PET 中使用滤波反投影方法的三维图像重建
仪器与探测器
2017-11-15 v1 高能物理 - 实验
医学物理
摘要
我们给出 Jagiellonian PET 断层扫描仪中图像重建的方法与初步结果。利用 GATE（Geant4 Application for Tomographic Emission）生成了 511 keV 光子与圆柱形探测器的相互作用。此类背对背飞行的光子对源自 1-mm 球形源内的 e+e- 湮灭。击中点的空间与时间坐标使用探测器的实验分辨率进行了模糊化。我们采用了在 STIR 与 TomoPy 软件包中实现的 3D 滤波反投影算法，二者在近似方法上有所不同。使用 STIR 获得了横向与纵向方向点扩散函数分别为 ~5/7,mm 与 ~9/20, mm 的一致结果，且未包含飞行时间信息。
引用
@article{arxiv.1710.11058,
title = {Three-dimensional image reconstruction in J-PET using Filtered Back Projection method},
author = {R. Y. Shopa and K. Klimaszewski and P. Kowalski and W. Krzemień and L. Raczyński and W. Wiślicki and P. Białas and C. Curceanu and E. Czerwiński and K. Dulski and A. Gajos and B. Głowacz and M. Gorgol and B. Hiesmayr and B. Jasińska and D. Kisielewska-Kamińska and G. Korcyl and T. Kozik and N. Krawczyk and E. Kubicz and M. Mohammed and M. Pawlik-Niedźwiecka and S. Niedźwiecki and M. Pałka and Z. Rudy and N. G. Sharma and S. Sharma and M. Silarski and M. Skurzok and A. Wieczorek and B. Zgardzińska and M. Zieliński and P. Moskal},
journal= {arXiv preprint arXiv:1710.11058},
year = {2017}
}
备注
Presented at the 2nd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics, Krak\'ow, Poland, June 4-9, 2017. To be published in Acta Phys. Pol. B