Abstract

Our goal is to develop a high performance SPECT system for simultaneous SPECT-MR imaging of small animals (SA). The SPECT system has inner diameter (ID) of 15.4 cm and outer diameter of 19.8 cm. It comprises five seamless cylindrical detectors, each with 19 CZT modules (2.54×2.54 cm2, 16×16 pixels). The SPECT system can be operated either stand-alone or as an insert into an MRI system with a minimum 20 cm bore. Cylindrical multipinhole (MPH) collimator sleeves (CSs), made with tungsten powder and solid tungsten pinhole apertures, were designed to provide maximum geometric efficiency under the system's geometric constraints. Different MPH collimators were designed for mouse or rat imaging, and for static high-resolution or dynamic imaging without CS rotation. Sparse-view image reconstruction methods reduce CS rotation. Monte Carlo simulations confirm the SPECT imaging characteristics …

Metadata

publication

2011 IEEE Nuclear Science Symposium Conference Record, 3178-3182, 2011

year

2011

publication date

2011/10/23

authors

Benjamin MW Tsui, Jingyan Xu, Andrew Rittenbach, Si Chen, AbdEL-Monem El-Sharkaway, William A Edelstein, Xiaoming Guo, Ang Liu, James W Hugg

link

https://ieeexplore.ieee.org/abstract/document/6153652/

conference

2011 IEEE Nuclear Science Symposium Conference Record

pages

3178-3182

publisher

IEEE