An effective scatter correction method based on single scatter simulation for a 3D whole-body PET scanner |
| |
Authors: | Gao Fei Yamada Ryoko Watanabe Mitsuo and Liu Hua-Feng |
| |
Institution: | State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China; Central Research Laboratory, Hamamatsu Photonics K.K., Hamamatsu 434-8601, Japan |
| |
Abstract: | Hamamatsu SHR74000 is a newly designed full three-dimensional (3D) whole body
positron emission tomography (PET)
scanner with small crystal size and large field of view (FOV). With
the improvement of sensitivity, the scatter events increase
significantly at the same time, especially for large objects.
Monte Carlo simulations help us to understand the scatter phenomena and
provide good references for scatter correction. In this paper, we
introduce an effective scatter correction method based on single
scatter simulation for the new PET scanner, which accounts for the
full 3D scatter correction. With the results from Monte Carlo
simulations, we implement a new scale method with special
concentration on scatter events from outside the axial FOV and
multiple scatter events. The effects of scatter correction are
investigated and evaluated by phantom experiments; the results
show good improvements in quantitative accuracy and
contrast of the images, even for large objects. |
| |
Keywords: | positron emission tomography scatter correction single scatter simulation Monte Carlo |
本文献已被 维普 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|