Title :
An improved FDK algorithm using camera calibration technique for reconstruction of misaligned CBCT system
Author :
Mengjiao Wang ; Hui Ding ; Guangzhi Wang
Author_Institution :
Dept. of Biomed. Eng., Tsinghua Univ., Beijing, China
fDate :
Aug. 28 2012-Sept. 1 2012
Abstract :
Cone beam computed tomography (CBCT) is widely applied for medical and industrial use recently. But artifacts are always induced due to the misalignments of CBCT components. An improved Feldkamp-Davis-Kress (FDK) algorithm using camera calibration technique for image reconstruction of misaligned CBCT is applied here to reduce the artifacts. Simulation results show that our improved FDK algorithm can reduce the artifacts significantly compared with standard FDK algorithm in misaligned CBCT system. Through the improved FDK algorithm presented here, we can reconstruct misaligned CBCT images efficiently.
Keywords :
calibration; cameras; computerised tomography; image reconstruction; FDK algorithm; Feldkamp-Davis-Kress algorithm; camera calibration technique; cone beam computed tomography; image reconstruction; industrial use; medical use; misaligned CBCT system; Algorithm design and analysis; Calibration; Detectors; Image reconstruction; Mathematical model; Phantoms; Standards; Algorithms; Calibration; Models, Theoretical; Photography; Tomography, X-Ray Computed;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-4119-8
Electronic_ISBN :
1557-170X
DOI :
10.1109/EMBC.2012.6347359
