Performance evaluation of scatter modeling of the GPU-based “Tera-Tomo” 3D PET reconstruction

Author

Magdics, Milán ; Szirmay-Kalos, László ; Tóth, Balázs ; Légrády, Dávid ; Cserkaszky, Áron ; Balkay, László ; Domonkos, Balázs ; Völgyes, Dávid ; Patay, Gergely ; Major, Péter ; Lantos, Judit ; Bükki, Tamás

Author_Institution

Dept. of Control Eng. & Inf. Technol., Budapest Univ. of Technol. & Econ., Budapest, Hungary

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

4086

Lastpage

4088

Abstract

In positron emission tomography (PET), photon scattering inside the body causes significant blurring and quantification error in the reconstructed images. To solve this problem we have developed Monte Carlo (MC) based 3D PET reconstruction algorithms implemented on the Graphics Processing Unit (GPU). Our implementation takes multiple Compton scattering into account without any significant additional cost. The performance of the scatter correction is evaluated using GATE simulation as well as by comparing reconstruction results of Tera-Tomo to the reference reconstruction implementation of the Philips Gemini TOF PET which applies attenuation correction and single scatter simulation (SSS) for scatter correction. The comparative reconstruction results are based on the NEMA NU2-2007 image quality phantom.

Keywords

Compton effect; Monte Carlo methods; graphics processing units; image reconstruction; medical image processing; performance evaluation; phantoms; positron emission tomography; GATE simulation; GPU-based Tera-Tomo 3D PET reconstruction; Monte Carlo based 3D PET reconstruction algorithms; NEMA NU2-2007 image quality phantom; Philips Gemini TOF PET; attenuation correction; graphics processing unit; multiple Compton scattering; performance evaluation; photon scattering; positron emission tomography; quantification error; reference reconstruction implementation; scatter correction; scatter modeling; single scatter simulation; Positron emission tomography;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6153777

Filename

6153777