ProjectCardiacCArmCT

Chair for Computer Aided Medical Procedures & Augmented Reality
Lehrstuhl für Informatikanwendungen in der Medizin & Augmented Reality

Cardiac C-Arm CT

Cardiac C-Arm CT

In medical collaboration with:
Dr. Julinda Mehilli (Deutsches Herzzentrum München)

Scientific Director: Prof. Dr. Nassir Navab

Contact Person(s): Andreas Keil

In industrial collaboration with:
Dr. Günter Lauritsch (Siemens Healthcare AX, Forchheim), Dr. Jan Boese (Siemens Healthcare AX, Forchheim)

Keywords: Reconstruction, Medical Imaging

Abstract

Tomographic reconstruction from rotational cone-beam X-ray data is only solved for static objects of interest (like the abdominal region). In cardiac imaging, a rotational angiography sequence takes about 4 to 6s and therefore spans several heart beats. Since such an acquisition scheme forces a trade-off between consistency of the scene and reasonable baselines between camera positions, standard reconstruction techniques fail at recovering the 3D+t scene. We propose a new reconstruction framework based on variational level sets including a new data term for symbolic reconstruction as well as a novel incorporation of motion into the level set formalism. The resulting simultaneous estimation of shape and motion proves feasible in first experiments.

Videos

Schematic illustration of the acquisition process

Evolution of the reference level set Phi_0

A 3D comparison of ground truth (green) and reconstructed (red) deformable shapes for synthetic data at 50% noise.

A 2D comparison of input projections (gray value images) and reconstrructed and projected (red) deformable shapes for segmented phantom data at 50% noise.

Team

Contact Person(s)

Andreas Keil
Dr. Andreas Keil

Working Group

Andreas Keil
Dr. Andreas Keil
Jakob Vogel
Dipl.-Inf. Univ. Jakob Vogel
Nassir Navab
Prof. Dr. Nassir Navab

Alumni

Titus Rosu
Titus Rosu

Location



Technische Universität München
Institut für Informatik / I16
Boltzmannstr. 3
85748 Garching bei München

Tel.: +49 89 289-17058
Fax: +49 89 289-17059
Visit our lab at Garching.



Deutsches Herzzentrum München
Klinik an der Technischen Universität München
Lazarettstr. 62
80636 München

Room: 215
Tel.: +49 89 1812 3710
Visit our lab at Deutsches Herzzentrum Muenchen.



internal project page

Please contact Andreas Keil for available student projects within this research project.

Edit | Attach | Refresh | Diffs | More | Revision r1.6 - 02 Oct 2009 - 17:26 - AndreasKeil

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