Amplitude correlated 4-dimensional cone beam CT

Jun Lu; X. Ronald Zhu; Peter Munro; Paichun M. Chi; Radhe Mohan; Tinsu Pan

doi:10.1117/12.655737

2 March 2006 Amplitude correlated 4-dimensional cone beam CT

Jun Lu, X. Ronald Zhu, Peter Munro, Paichun M. Chi, Radhe Mohan, Tinsu Pan

Proceedings Volume 6142, Medical Imaging 2006: Physics of Medical Imaging; 61422I (2006) https://doi.org/10.1117/12.655737
Event: Medical Imaging, 2006, San Diego, California, United States

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.

Citation Download Citation

Jun Lu, X. Ronald Zhu, Peter Munro, Paichun M. Chi, Radhe Mohan, and Tinsu Pan "Amplitude correlated 4-dimensional cone beam CT", Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61422I (2 March 2006); https://doi.org/10.1117/12.655737

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