DocumentCode
3340755
Title
A physics-based fast approach to scatter correction for large cone angle computed tomographic systems
Author
Zou, Yu ; Silver, Michael D. ; Chiang, Be-Shan ; Oishi, Satoru ; Uebayashi, I. Yoshinori ; Noshi, Yasuhiro ; Nakanishi, Satoru
Author_Institution
Toshiba Med. Res. Inst. USA, Vernon Hills, IL, USA
fYear
2011
fDate
23-29 Oct. 2011
Firstpage
3732
Lastpage
3735
Abstract
An efficient scatter correction model is developed for large cone angle CT systems. The scatter intensities are expressed as a 2D convolution of forward functions with two Gaussian kernels. The kernels are derived from the differential cross sections of the Rayleigh (coherent) and Compton (incoherent) scattering. The results of water phantoms show good CT number uniformity and accuracy. The clinical images demonstrate a significant improvement on image quality.
Keywords
Compton effect; Rayleigh scattering; X-ray scattering; computerised tomography; medical signal processing; 2D forward function convolution; Compton scattering; Gaussian kernels; Rayleigh scattering; computed tomographic systems; fast approach scatter correction; image quality; incoherent scattering; large cone angle CT systems; physics based scatter correction; scatter correction model; scatter intensity;
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.2011.6153704
Filename
6153704
Link To Document