Share Email Print
cover

Proceedings Paper • new

Double-helix trajectory for image guided radiation therapy: geometry and image reconstruction
Author(s): Zhicong Yu; Chuanyong Bai; Daniel Gagnon
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Cone-beam CT (CBCT) is a prevalent tool for image-guided radiation therapy (IGRT). It can be used for patient positioning and dose calculation, which are needed at the early and later stages of each fraction of treatment, respectively. The requirement of image quality on patient positioning is less demanding than that on dose calculation. This work introduces a two-pass data acquisition approach for CBCT imaging in IGRT, with the first pass being left-handed helix and the second pass being right-handed helix. The first scan alone produces images for patient positioning, whereas the two scans together are used to produce quality improved images for dose calculation. We refer to this two-pass data acquisition geometry as the double-helix trajectory. We propose a dedicated image reconstruction algorithm for the double-helix trajectory and demonstrate the algorithm via computer simulations.

Paper Details

Date Published: 28 May 2019
PDF: 5 pages
Proc. SPIE 11072, 15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine, 110721Y (28 May 2019); doi: 10.1117/12.2534383
Show Author Affiliations
Zhicong Yu, Accuray Inc. (United States)
Chuanyong Bai, Accuray Inc. (United States)
Daniel Gagnon, Accuray Inc. (United States)


Published in SPIE Proceedings Vol. 11072:
15th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine
Samuel Matej; Scott D. Metzler, Editor(s)

© SPIE. Terms of Use
Back to Top