An investigation into attenuation artefacts created by cochlear implants in positron emission tomography

Author

Matthews, Julian C. ; Balfour, Daniel ; Vallance, Michael ; Anton-Rodriguez, Jose ; Green, Keith Evan

Author_Institution

MAHSC, Univ. of Manchester, Manchester, UK

fYear

2012

fDate

Oct. 27 2012-Nov. 3 2012

Firstpage

2890

Lastpage

2891

Abstract

Observed hypo-intensities in PET scans of patients with cochlear implants were investigated to establish whether they are due to inaccuracies in attenuation correction. Data from previously acquired scans were analysed and a number of phantom scans conducted on an HRRT and PET-CT scanner. For the HRRT similar hypo-intensities were observed but they were localised to the region around the implants. For the PET-CT scan artefacts extended further away and were due to artefacts in the CT scans used for attenuation correction.

Keywords

cochlear implants; computerised tomography; image reconstruction; medical image processing; phantoms; positron emission tomography; HRRT hypointensity; High Resolution Research Tomograph; PET-CT scan artefact; PET-CT scanner; artefact attenuation; attenuation correction; cochlear implant; phantom; positron emission tomography; Attenuation correction; Implants; Positron Emission Tomography;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE

Conference_Location

Anaheim, CA

ISSN

1082-3654

Print_ISBN

978-1-4673-2028-3

Type

conf

DOI

10.1109/NSSMIC.2012.6551659

Filename

6551659