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Proceedings Paper

Amplitude correlated 4-dimensional cone beam CT
Author(s): Jun Lu; X. Ronald Zhu; Peter Munro; Paichun M. Chi; Radhe Mohan; Tinsu Pan
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Paper Abstract

We have developed an amplitude correlated (AC) 4-dimensional cone beam CT (4D-CBCT) imaging technique on the Varian cone beam CT system. We use the Varian Real-time Positioning Monitoring (RPM) system to synchronize the recording of the respiratory motion and the 4D-CBCT imaging. The projection data of the same amplitude in respiratory motion are used to reconstruct an image of the corresponding amplitude in RPM. In the absence of hysteresis of respiratory motion, we can utilize the two CBCT projections in the same breathing cycle: one in the inspiration to expiration and one in the expiration to inspiration to improve the signal to noise ratio, reduce the aliasing due to insufficient sampling in the angular direction.

Paper Details

Date Published: 2 March 2006
PDF: 11 pages
Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61422I (2 March 2006); doi: 10.1117/12.655737
Show Author Affiliations
Jun Lu, MD Anderson Cancer Ctr., Univ. of Texas (United States)
X. Ronald Zhu, MD Anderson Cancer Ctr., Univ. of Texas (United States)
Peter Munro, Varian Medical Systems (United States)
Paichun M. Chi, MD Anderson Cancer Ctr., Univ. of Texas (United States)
Radhe Mohan, MD Anderson Cancer Ctr., Univ. of Texas (United States)
Tinsu Pan, MD Anderson Cancer Ctr., Univ. of Texas (United States)


Published in SPIE Proceedings Vol. 6142:
Medical Imaging 2006: Physics of Medical Imaging
Michael J. Flynn; Jiang Hsieh, Editor(s)

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