Video image based attenuation correction for PETbox, a preclinical PET tomograph

Author

Taschereau, Richard ; Bao, Qinan ; Rannou, Fernando R. ; Chatziioannou, Arion F.

Author_Institution

Dept. of Mol. & Med. Pharmacology, Univ. of California Los Angeles, Los Angeles, CA, USA

fYear

2009

fDate

Oct. 24 2009-Nov. 1 2009

Firstpage

3350

Lastpage

3352

Abstract

PETBox is a new simplified bench top PET scanner dedicated for pre-clinical imaging of mice. It has only two facing detector heads in a static gantry. Using iterative methods, limited-angle reconstruction of 3D images is possible. The geometry of the PETBox is such that very oblique emission angles are detected traversing significant lengths of tissue, making attenuation correction necessary. To that effect, we have developed a method by which two orthogonal optical views are combined to create a 3-dimensional estimate of the subject. This estimate is used to produce attenuation correction data that significantly improve the quantitative accuracy of the reconstructed images. In this paper, we present the method and evaluate its accuracy.

Keywords

biological tissues; image reconstruction; iterative methods; medical image processing; positron emission tomography; PET scanner; PETBox; Positron Emission Tomography; iterative methods; limited-angle image reconstruction; oblique emission angles; orthogonal optical views; preclinical imaging; static gantry; video image based attenuation correction; Attenuation; Detectors; Geometrical optics; Head; Image reconstruction; Iterative methods; Mice; Optical attenuators; Optical imaging; Positron emission tomography;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE

Conference_Location

Orlando, FL

ISSN

1095-7863

Print_ISBN

978-1-4244-3961-4

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2009.5401754

Filename

5401754