Title :
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
fDate :
Oct. 27 2012-Nov. 3 2012
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;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4673-2028-3
DOI :
10.1109/NSSMIC.2012.6551659
