Component based normalization method for rotating dual head PET scanner

International Conference on Bio-Medical Instrumentation and related Engineering and Physical Sciences

物理学;医药卫生

Efthimiou, N.^1,2 ; Loudos, G.^1 ; Panayiotakis, G.S.^2

Department of Biomedical Engineering, Technological Educational Institute of Athens, Greece^1

Department of Medical Physics, School of Medicine, University of Patras, Greece^2

关键词: Attenuation correction;    Component-based normalizations;    Correction factors;    Detector efficiency;    Geometric effects;    PET reconstruction;    PET scanner;    Transaxial;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/637/1/012007/pdf
DOI  :  10.1088/1742-6596/637/1/012007

学科分类：卫生学

来源: IOP

【 摘 要 】

Component based normalization is a well-established method to calculate correction factors for unbiased and reliable PET reconstruction. Several methods have been studied and validated for cylindrical PET scanners. In this work we adapted a method already presented for cylindrical scanners to rotating dual head PET scanners. The model included corrections for detector efficiency, axial and transaxial geometric effects, crystal interference and attenuation corrections. Results from a simulated realistic dual head PET showed that the adaptation is valid. The images are significantly improved in terms of homogeneity, resolution and background contribution.