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

fYear

2012

fDate

Aug. 28 2012-Sept. 1 2012

Firstpage

5991

Lastpage

5994

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE

Conference_Location

San Diego, CA

ISSN

1557-170X

Print_ISBN

978-1-4244-4119-8

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/EMBC.2012.6347359

Filename

6347359