Visualization of radiotracers for SPECT imaging using a Timepix detector with a coded aperture

作     者：Rozhkov, V Chelkov, G. Hernandez, I Ivanov, O. Kozhevnikov, D. Leyva, A. Perera, A. Rastorguev, D. Smolyanskiy, P. Torres, L. Zhemchugov, A. 

作者机构：Joint Inst Nucl Res Dubna Russia Isotopes Ctr Mayabeque Cuba Natl Res Ctr Kurchatov Inst Moscow Russia Ctr Technol Applicat & Nucl Dev Havana Cuba Moscow Inst Phys & Technol Dolgoprudnyi Russia 

出 版 物：《JOURNAL OF INSTRUMENTATION》 (J. Instrum.)

年 卷 期：2020年第15卷第6期

核心收录：

学科分类：08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程] 

基　　金：RFBR CITMA [18-52-34005] 

主　　题：Gamma camera, SPECT, PET PET/CT, coronary CT angiography (CTA) Image reconstruction in medical imaging Medical-image reconstruction methods and algorithms, computer-aided diagnosis Hybrid detectors 

摘      要：The work shows the ability to visualize radiotracers used in SPECT with a system based on a coded aperture mask and a hybrid pixel Timepix detector with the CdTe sensor. Characterization of the system using X-rays and radioactive sources confirms that the spatial resolution of less than 1 mm with a field of view 3 cm x 3 cm can be achieved. The results of a simulation study to determine the expected spatial resolution of the system in the focal plane for the various radionuclides is presented. The possibility of using this system with a thin (1 mm) coded aperture mask for reconstructing images of gamma emitters with the energy up to 180 keV is demonstrated.