Title

Implementation Of The Circle-And-Line Algorithm For 256-Detector Row Ct

Keywords

Circle and line trajectory; Circular cone beam CT; Computed tomography; Filtered backprojection

Abstract

In this work we apply the circle-and-line acquisition for the 256-detector row medical CT scanner. Reconstruction is based on the exact algorithm of the FBP type suggested recently by one of the co-authors. We derived equations for the cylindrical detector, common for medical CT scanners. To minimize hardware development efforts we use ramp-based reconstruction of the circle data. The line data provides an additional term that corrects the cone beam artifacts that are caused by the incompleteness of the circular trajectory. We illustrate feasibility of our approach using simulated data and real scanned data of the anthropomorphic phantom and evaluate stability of reconstruction to motion and misalignments during the scan. The additional patient dose from the line scan is relatively low compared to the circle scan. The proposed algorithm allows cone beam artifact-free reconstruction with large cone angle.

Publication Date

10-15-2007

Publication Title

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

Volume

6510

Issue

PART 3

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.713779

Socpus ID

35148844345 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/35148844345

This document is currently not available here.

Share

COinS