Advanced processing for motion-compensated reconstruction in cardiac cone-beam CT

Udo van Stevendaal; Peter Forthmann; Thomas Köhler; Jens von Berg; Cristian Lorenz; Michael Grass

doi:10.1117/12.811086

14 March 2009 Advanced processing for motion-compensated reconstruction in cardiac cone-beam CT

Udo van Stevendaal, Peter Forthmann, Thomas Köhler, Jens von Berg, Cristian Lorenz, Michael Grass

Proceedings Volume 7258, Medical Imaging 2009: Physics of Medical Imaging; 725833 (2009) https://doi.org/10.1117/12.811086
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States

Abstract

Cardiac CT image reconstruction suffers from artifacts due to heart motion during acquisition. In order to mitigate these effects, it is common practice to choose a protocol with minimal gating window and fast gantry rotation. In addition, it is possible to estimate heart motion retrospectively and to incorporate the information in a motion-compensated reconstruction (MCR). If shape tracking algorithms are used for generation of the heart motion-vector field (MVF), the number and positions of the motion vectors will not coincide with the number and positions of the voxels in the reconstruction grid. In this case, data interpolation is necessary for MCR algorithms which require one motion vector at each voxel location. This work examines different data interpolation approaches for the MVF interpolation problem and the effects on the MCR results.

Citation Download Citation

Udo van Stevendaal, Peter Forthmann, Thomas Köhler, Jens von Berg, Cristian Lorenz, and Michael Grass "Advanced processing for motion-compensated reconstruction in cardiac cone-beam CT", Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 725833 (14 March 2009); https://doi.org/10.1117/12.811086

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available