DocumentCode :
2254092
Title :
Scatter correction in cone-beam CT based on deconvolution
Author :
Wang, Lin ; Shi, Lin ; Wang, Defeng
Author_Institution :
Lab. of Image Sci. & Technol., Southeast Univ., Nanjing, China
fYear :
2012
fDate :
5-7 Jan. 2012
Firstpage :
75
Lastpage :
78
Abstract :
Cone-beam CT has a lot of advantages such as short time reconstruction, high spatial resolution, broad irradiation and computational efficiency and so on. However, because of large area of irradiation, cone-beam CT data may process very high scatter-to-primary ratios (SPR>;2), which will result in severe cupping artifacts, streaks and CT number inaccuracies in reconstructed images. It remains difficult to remove the scatter noise from the projection data compared with that of fan-beam CT. Therefore, it is an inevitable problem that how to effectively eliminate the scatter noise in the projection data and improve the resolution of reconstructed images. As so many new correction methods have been proposed in recent years, this paper gives an overview of scatter correction and then illustrates our experiment methods for reference.
Keywords :
computerised tomography; deconvolution; image denoising; image reconstruction; image resolution; medical image processing; CT number inaccuracies; cone beam CT data; cupping artifacts; deconvolution; irradiation; projection data; reconstructed image resolution; scatter correction; scatter noise; scatter-to-primary ratio; streaks; Biomedical imaging; Detectors; Modulation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Biomedical and Health Informatics (BHI), 2012 IEEE-EMBS International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4577-2176-2
Electronic_ISBN :
978-1-4577-2175-5
Type :
conf
DOI :
10.1109/BHI.2012.6211509
Filename :
6211509
Link To Document :
بازگشت