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
Copyright Status
Unknown
Socpus ID
35148844345 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/35148844345
STARS Citation
Zamyatin, A. A.; Chiang, B.; Katsevich, A.; Nakanishi, S.; and Silver, M. D., "Implementation Of The Circle-And-Line Algorithm For 256-Detector Row Ct" (2007). Scopus Export 2000s. 6657.
https://stars.library.ucf.edu/scopus2000/6657