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Helical cardiac cone beam reconstruction using retrospective ECG gating

Philips CT Clinical Science Philips Healthcare • USA

M.Grass, R. Manzke, T. Nielsen, P. Koken, R. Proksa, M. Natanzon and G Shechter.


Philips Research Laboratories, Sector Technical Systems, Roentgenstr. 24-26, D-22335 Hamburg, Germany.


In modern computed tomography (CT) systems, the fast rotating gantry and the increased detector width enable 3D imaging of the heart. Cardiac volume CT has a high potential for non-invasive coronary angiography with high spatial resolution and short scan time. Due to the increased detector width, true cone beam reconstruction methods are needed instead of adapted 2D reconstruction schemes. In this paper, the extended cardiac reconstruction method is introduced. It integrates the idea of retrospectively gated cardiac reconstruction for helical data acquisition into a cone beam reconstruction framework. It leads to an efficient and flexible algorithmic scheme for the reconstruction of single- and multi-phase cardiac volume datasets. The method automatically adapts the number of cardiac cycles used for the reconstruction. The cone beam geometry is fully taken into account during the reconstruction process. Within this paper, results are presented on patient datasets which have been acquired using a 16-slice cone beam CT system.


For more information about this publication, check out the PubMed listing for this article.

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Sep 22, 2006

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Brilliance 16-slice
3D, Cardiac, coronary angiography, ECG-gated, helical CT, retrospective, Retrospective gating, spectral CT, Vascular

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