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Proceedings Paper

Optimized time window for cardiac CT reconstruction based on Doppler tissue imaging (DTI) data
Author(s): Rui Guerra; Andre Codreanu; Yannick Ponvianne; Romain Grosjean; Jacques Felblinger
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Paper Abstract

Optimal time windowing in cardiac CT reconstruction would permit a reduction of motion artifacts. We used Doppler Tissue Imaging (DTI) in order to acquire the speed and displacement of region of interest in one direction with a high temporal resolution. Applied on different segments of coronary arteries, 3D information is recovered in three quasi orthogonal acquisitions (abdominal, parasternal and apical views). Their reproducibility was carried on five healthy subjects. This experiment will allow finding the best time window for reconstruction. A window of half the rotation time (250ms for our CT) was estimated based on minimization of the motion variation in 3D. Since we obtained a high reproducibility between the two sessions (generally < 2mm) DTI could be an interesting approach to evaluate motion in 3D. This yields more information as compared to 2D data. Future work will require additional acquisitions and experiments in order to analyze more in depth the variability and the influence of the heart rate. The collected data will be used also as input for our motion platform and CT simulation.

Paper Details

Date Published: 2 March 2006
PDF: 8 pages
Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61420K (2 March 2006); doi: 10.1117/12.654348
Show Author Affiliations
Rui Guerra, Univ. Henri Poincaré, INSERM, CHU Nancy (France)
Siemens Medical Solutions (France)
Andre Codreanu, Univ. Henri Poincaré, INSERM, CHU Nancy (France)
CHU Nancy (France)
Yannick Ponvianne, Univ. Henri Poincaré, INSERM, CHU Nancy (France)
Romain Grosjean, Univ. Henri Poincaré, INSERM, CHU Nancy (France)
Jacques Felblinger, Univ. Henri Poincaré, INSERM, CHU Nancy (France)

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

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