Comparative evaluation of two analytical methods for Helical Cone-Beam Tomography

Author

Schöndube, Harald ; Stierstorfer, Karl ; Dennerlein, Frank ; Noo, Frédéric

Author_Institution

Univ. of Utah, Lake City

Volume

6

fYear

2007

fDate

Oct. 26 2007-Nov. 3 2007

Firstpage

4467

Lastpage

4471

Abstract

We present some extensions to the recently published "DBP-0" method which are important for making the algorithm more suitable for clinical routine. These extensions are (i) an incorporation of the slice thickness into the reconstruction process, (ii) a way of reconstructing a region of interest smaller than the FOV, (iii) the possibility to reconstruct from flying focal spot data and (iv) a frequency apodization scheme for influencing the resolution vs. noise level during reconstruction. We furthermore present an evaluation of the DBP-0 method against the approximate Weighted FBP (WFBP) algorithm in terms of resolution, noise and subjective appearance of reconstructed images.

Keywords

computerised tomography; image reconstruction; image resolution; medical image processing; DBP-0 method; flying focal spot data; frequency apodization; helical cone-beam tomography; image noise; image reconstruction; image resolution; weighted FBP algorithm; Biomedical imaging; Computed tomography; Data acquisition; Detectors; Frequency; Geometry; Image reconstruction; Image resolution; Noise level; Nuclear and plasma sciences;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE

Conference_Location

Honolulu, HI

ISSN

1095-7863

Print_ISBN

978-1-4244-0922-8

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2007.4437103

Filename

4437103