A new wavelet-based cone-beam local reconstruction algorithm for off-centered circular trajectory

Author

Cao, Haoshu ; Cai, Ke ; Xu, Min ; Li, Deyu

Author_Institution

Sch. of Biol. Sci. & Med. Eng., Beihang Univ., Beijing, China

Volume

1

fYear

2010

fDate

16-18 Oct. 2010

Firstpage

56

Lastpage

60

Abstract

Cone-beam computed tomography for circular trajectory has been widely used. Sometimes off-centered circular trajectory has to be used because of some mechanical restrictions. In this paper, we develop an algorithm to reconstruct ROI from local cone-beam projections for off-centered circular trajectory. The proposed method is derived from combination of α-FDK and wavelet-based algorithm, and their advantages are maintained. Neither severe truncation artifacts nor details blurring occurs in the reconstructed image.

Keywords

computerised tomography; image reconstruction; medical image processing; wavelet transforms; Feldkamp wavelet-based algorithm; cone-beam computed tomography; image reconstruction; off-centered trajectory; region of interest; wavelet-based cone-beam local reconstruction algorithm; Filtering algorithms; Image reconstruction; Phantoms; Pixel; Teeth; Tomography; Trajectory; α-FDK; cone-beam CT; local tomography; medical imaging; wavelet;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering and Informatics (BMEI), 2010 3rd International Conference on

Conference_Location

Yantai

Print_ISBN

978-1-4244-6495-1

Type

conf

DOI

10.1109/BMEI.2010.5639507

Filename

5639507