Conebeam x-ray computed tomography with an offset detector array

Jens Gregor, S. S. Gleason, M. J. Paulus

Research output: Contribution to conferencePaper

11 Citations (Scopus)

Abstract

Conventional x-ray computed tomography (CT) imaging is based on the assumption that the entire cross-section of an object is illuminated with x-rays at each view angle. When imaging a large object, a large detector array is thus needed. As an alternative, we propose to offset a normal sized detector array such that slightly more than one half of the required projection data is acquired. During reconstruction, the missing data is accounted for by means of an interpolation and weighting scheme. This algorithmic approach for extending the field of view, which we here present in the context of the popular Feldkamp algorithm, is simple but effective. Supportive experimental results are provided based on simulated phantom data as well as real data obtained from a MicroCAT (tm) which is a circular orbit micro-CT system for small animal imaging.

Original languageEnglish (US)
Pages803-806
Number of pages4
StatePublished - Dec 17 2003
Externally publishedYes
EventProceedings: 2003 International Conference on Image Processing, ICIP-2003 - Barcelona, Spain
Duration: Sep 14 2003Sep 17 2003

Other

OtherProceedings: 2003 International Conference on Image Processing, ICIP-2003
CountrySpain
CityBarcelona
Period9/14/039/17/03

Fingerprint

Tomography
Detectors
Imaging techniques
X rays
Interpolation
Animals
Orbits

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering

Cite this

Gregor, J., Gleason, S. S., & Paulus, M. J. (2003). Conebeam x-ray computed tomography with an offset detector array. 803-806. Paper presented at Proceedings: 2003 International Conference on Image Processing, ICIP-2003, Barcelona, Spain.

Conebeam x-ray computed tomography with an offset detector array. / Gregor, Jens; Gleason, S. S.; Paulus, M. J.

2003. 803-806 Paper presented at Proceedings: 2003 International Conference on Image Processing, ICIP-2003, Barcelona, Spain.

Research output: Contribution to conferencePaper

Gregor, J, Gleason, SS & Paulus, MJ 2003, 'Conebeam x-ray computed tomography with an offset detector array' Paper presented at Proceedings: 2003 International Conference on Image Processing, ICIP-2003, Barcelona, Spain, 9/14/03 - 9/17/03, pp. 803-806.
Gregor J, Gleason SS, Paulus MJ. Conebeam x-ray computed tomography with an offset detector array. 2003. Paper presented at Proceedings: 2003 International Conference on Image Processing, ICIP-2003, Barcelona, Spain.
Gregor, Jens ; Gleason, S. S. ; Paulus, M. J. / Conebeam x-ray computed tomography with an offset detector array. Paper presented at Proceedings: 2003 International Conference on Image Processing, ICIP-2003, Barcelona, Spain.4 p.
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