ProjectCamC

Camera Augmented Mobile C-arm

Project duration: 2006/01/01 - 2007/12/31

Sponsored partially by: Siemens

In industrial collaboration with:
Dr. Rainer Graumann, Siemens Medical SP, Erlangen Germany

In medical collaboration with:
Dr. Sandro-Michael Heining, Klinikum Innenstadt, LMU, Munich, Germany
Dr. Ekkehard Euler, Klinikum Innenstadt, LMU, Munich, Germany

Scientific Director: Joerg Traub and Nassir Navab

Contact Person: Joerg Traub

Abstract
Pictures
Videos
Publications
Team
Location

Keywords: Medical Imaging, Computer-Aided Surgery, Medical Augmented Reality

Abstract

The problem of positioning mobile C-arms, e.g. for down the beam techniques, as well as repositioning during surgical procedures currently requires time, skill and additional radiation. The Camera-Augmented Mobile C-arm (CAMC) is able to speed up the procedure, simplify its execution and reduce the necessary radiation. The C-arm is extended by a CCD camera. The CCD camera is attached to the C-arm such that it is virtually at the same location than the x-ray source. This is done by a double mirror construction. A two step calibration routine has be done only once at the moment the camera is attached. Extensions for a lightwight, but complete navigation system for pedile screw placement or implant positioning is currently under investigation.

Pictures

Figure 1: Mockup of the CamC System.

Figure 2: The attached camera and the double mirror construction.

Figure 3: Extended system setup with two attached cameras.

Figure 4: Visualization shows the overlay of the x-ray onto a foot.

Videos

As an extension the camera augmented mobile c-arm system by Navab et al. 1999 we developed a multi-view system which offers 3D navigation during trauma surgery and orthopedic procedures. We use an additional video camera in an orthogonal arrangement to the first video camera and a minimum of two X-ray images.

Standard X-ray images have a narrow field of view and can not visualize the entire long bone on a single image. We propose a novel method to generate panoramic X-ray images by using the Camera Augmented Mobile C-arm. This advanced mobile C-arm system can register the X-ray image with an optical image by construction, which facilitates the generation of panoramic X-ray images based on first stitching the optical images and then embedding the X-ray images.

Publications

2009
	L. Wang, J. Traub, S.M. Heining, S. Benhimane, R. Graumann, E. Euler, N. Navab Long Bone X-ray Image Stitching using C-arm Motion Estimation Proceedings of Bildverarbeitung fuer die Medizin (BVM 2009), Heidelberg, Germany, March 2009 (to be published) (bib)
	L. Wang, S. Weidert, J. Traub, S.M. Heining, C. Riquarts, E. Euler, N. Navab Camera Augmented Mobile C-arm: Towards Real Patient Study Proceedings of Bildverarbeitung fuer die Medizin (BVM 2009), Heidelberg, Germany, March 2009 (to be published) (bib)
2008
	J. Traub, A. Ahmadi, N. Padoy, L. Wang, S.M. Heining, E. Euler, P. Jannin, N. Navab Workflow Based Assessment of the Camera Augmented Mobile C-arm System International Workshop on Augmented Reality environments for Medical Imaging and Computer-aided Surgery (AMI-ARCS 2008), New York, NY, USA, September 2008 (bib)
	L. Wang, J. Traub, S.M. Heining, S. Benhimane, R. Graumann, E. Euler, N. Navab Long Bone X-ray Image Stitching Using Camera Augmented Mobile C-arm Medical Image Computing and Computer-Assisted Intervention, MICCAI, 2008, New York, USA, September 6-10 2008 (bib)
	J. Traub, S.M. Heining, E. Euler, N. Navab Two camera augmented mobile C-arm – System setup and first experiments Proceedings of The 8th Computer Assisted Orthopaedic Surgery (CAOS 2008), Hong Kong, China, June, 2008 (bib)
2007
	J. Traub, H. Heibel, P. Dressel, S.M. Heining, R. Graumann, N. Navab A Multi-View Opto-Xray Imaging System: Development and First Application in Trauma Surgery Proceedings of Medical Image Computing and Computer-Assisted Intervention (MICCAI 2007), Brisbane, Australia, October/November 2007. (bib)
	N. Navab, J. Traub, T. Sielhorst, M. Feuerstein, C. Bichlmeier Action- and Workflow-Driven Augmented Reality for Computer-Aided Medical Procedures IEEE Computer Graphics and Applications, vol. 27, no. 5, pp. 10-14, Sept/Oct, 2007 (bib)
	T. Klein, S. Benhimane, J. Traub, S.M. Heining, E. Euler, N. Navab Interactive Guidance System for C-arm Repositioning without Radiation Proceedings of Bildverarbeitung fuer die Medizin (BVM 2007), Munich, Germany, March 2007, pp. 21-25 (bib)
2006
	N. Navab, S. Wiesner, S. Benhimane, E. Euler, S.M. Heining Visual Servoing for Intraoperative Positioning and Repositioning of Mobile C-arms Proceedings of Medical Image Computing and Computer-Assisted Intervention (MICCAI 2006), Copenhagen, Denmark, October 2006 (bib)
	S.M. Heining, S. Wiesner, E. Euler, N. Navab CAMC (camera augmented mobile c-arm) - first clinical application in a cadaver study Journal of Biomechanics 2006; Vol. 39 Suppl. 1, page 210 (bib)
	S.M. Heining, S. Wiesner, E. Euler, N. Navab Pedicle screw placement under video-augmented fluoroscopic control. First clinical application in a cadaver study International Journal of Computer Assisted Radiology and Surgery, 2006; Vol. 1 Suppl. 1, page 189-190. The original publication is available online at www.springerlink.com (bib)
	S.M. Heining, S. Wiesner, E. Euler, W. Mutschler, N. Navab Locking of intramedullary nails under video-augmented flouroscopic control: first clinical application in a cadaver study Proceedings of The 6th Computer Assisted Orthopaedic Surgery (CAOS 2006), Montreal, Canada, June, 2006 (bib)
1999
	N. Navab, A. Bani-Hashemi, M. Mitschke Merging visible and invisible: two camera-augmented mobile C-arm (CAMC) applications Proceedings, 2nd IEEE and ACM International Workshop on Augmented Reality (IWAR'99); Oct. 1999; p. 134-41 (bib)
	N. Navab, M. Mitschke, O. Schuetz Camera augmented Mobile C-arm (CAMC) Application: 3D reconstruction using a low-cost mobile C-arm Proceedings of Medical Image Computing and Computer-Assisted Intervention (MICCAI 1999), Cambridge, England, September 1999 (bib)

Team

Location

Ludwig-Maximilians-Universität München
Chirurgische Klinik und Poliklinik - Innenstadt, AG CAS
Nussbaumstr. 20
80336 München

Room: C2.06
Tel.: +49 89 5160-3615
Tel.: +49 89 5160-3635
Fax: +49 89 5160-3630

Visit our lab at Klinikum Innenstadt.

internal project page

Please contact Joerg Traub for available student projects within this research project.