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Closing the gap: From planning to intervention in cardiology

 
: Drechsler, Klaus; Oyarzun Laura, Cristina

:

Richard, P.:
Computer vision, imaging and computer graphics. Theory and applications. International joint conference, VISIGRAPP 2010 : Angers, France, May 17 - 21, 2010; revised selected papers
Berlin: Springer, 2011 (Communications in computer and information science 229)
ISBN: 978-3-642-25381-2
ISBN: 3-642-25381-4
ISBN: 987-3-642-25382-9
ISSN: 1865-0929
pp.187-200
International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Appications (VISIGRAPP) <5, 2010, Angers>
English
Conference Paper
Fraunhofer IGD ()
cardiology; Search space reduction; rigid registration

Abstract
It is likely that in the near future the diagnostic of coronary arteries will be done using non-invasive computed tomography angiography and that only the intervention, if necessary, will be carried out using invasive techniques. Pre-interventional gathered CTA data can be used to carry out an automated quantitative analysis of the arteries, which can provide complementary information during a cardiac catheterization when only coronary angiograms are available. We propose an anatomical landmark-based rigid 3D/2D registration algorithm which enables the fusion of both modalities. It has to solve for six transformation parameters (three rotation and three translation parameters). An exhaustive search in a six dimensional search space is usually computationally very expensive and algorithms using optimization strategies can get lost in local minima. We propose a method based on centroids to reduce search space from six to four dimensions and use information stored in moder n C-Arm devices to further reduce the search space. With our method registration errors of < 2 mm are feasible. Execution times of < 1 sec. can be reached on a QuadCore CPU.

: http://publica.fraunhofer.de/documents/N-208726.html