Title :
Transmission Profile Filtering for Positron Emission Tomography
Author :
Palmer, M.R. ; Rogers, J.G. ; Bergstrom, M. ; Beddoes, M.P. ; Pate, B.D.
Author_Institution :
UBC/TRIUMF PET Program the University of British Columbia 2211 Wesbrook Mall Vancouver, B.C., V6T 2B5 Canada
Abstract :
Attenuation correction in PET performed by the transmission measurement method provides accurate compensation but increases image noise. Transmission profile filtering is evaluated in terms of image noise reduction as a trade-off against systematic error introduced by the filter itself. Phantom measurements performed on the UBC/TRIUMF PETT VI tomograph are used to evaluate filter performance. It is found that filtering with a Gaussian of 12.5 mm FWHM reduces the image variance due to noise in transmission profiles by a factor of 15.
Keywords :
Aluminum; Attenuation measurement; Councils; Filtering; Filters; Image reconstruction; Imaging phantoms; Noise reduction; Performance evaluation; Positron emission tomography;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1986.4337146
