Title :
Metal artifact correction methods in CT
Author :
Yang, Hou-Ting ; Tsai, Yu-Jung ; Hsiao, Ing-Tsung
Author_Institution :
Dept Med. Imaging & Radiol. Sci., Chang Gung Univ., Taoyuan, Taiwan
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
Metal artifact is one of major problems in CT imaging. With the presence of metal, the X-ray beam would be heavily attenuated and that introduces severe streak artifact after filtered back projection (FBP) image reconstruction. Here we proposed a simple post-processing interpolation (Post_PI) method which is similar to conventional interpolation (Pre_PI) method but without the need of raw projection data for recovering the missing data caused by the attenuation effect.
Keywords :
X-ray apparatus; computerised tomography; image reconstruction; phantoms; X-ray beam; attenuation effect; computer tomography imaging; conventional interpolation method; filtered back projection; image reconstruction; metal artifact correction methods; postprocessing interpolation method; raw projection data; severe streak artifact; Attenuation; Computed tomography; Image reconstruction; Image segmentation; Interpolation; Object detection; Optical imaging; X-ray detection; X-ray detectors; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5401947
