Prof. Norbert K. Strobel Profile

Prof. Norbert K. Strobel

Professor at Univ Applied Sciences Würzburg-Schweinfurt

SPIE Involvement:

Author

Publications (22)

SPIE Journal Paper | 22 May 2014

Automatic planning of atrial fibrillation ablation lines using landmark-constrained nonrigid registration

Martin Koch, Alexander Brost, Felix Bourier, Joachim Hornegger, Norbert Strobel

JMI, Vol. 1, Issue 01, 015002, (May 2014) https://doi.org/10.1117/12.10.1117/1.JMI.1.1.015002

KEYWORDS: Photovoltaics, 3D modeling, Process modeling, Atrial fibrillation, Image registration, 3D acquisition, Data modeling, 3D image processing, Visualization, Veins

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Proceedings Article | 15 March 2013 Paper

Paper

Reconstruction method for curvilinear structures from two views

Matthias Hoffmann, Alexander Brost, Carolin Jakob, Martin Koch, Felix Bourier, Klaus Kurzidim, Joachim Hornegger, Norbert Strobel

Proceedings Volume 8671, 86712F (2013) https://doi.org/10.1117/12.2006346

KEYWORDS: Cameras, Endoscopes, 3D image processing, Lithium, Associative arrays, Heart, Solids, Reconstruction algorithms, Silver, Medicine

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Proceedings Article | 8 March 2013 Paper

Paper

Cryo-balloon catheter localization in fluoroscopic images

Tanja Kurzendorfer, Alexander Brost, Carolin Jakob, Philip Mewes, Felix Bourier, Martin Koch, Klaus Kurzidim, Joachim Hornegger, Norbert Strobel

Proceedings Volume 8671, 86710C (2013) https://doi.org/10.1117/12.2006543

KEYWORDS: Blob detection, Atrial fibrillation, Collimators, Detection and tracking algorithms, Veins, Tissues, Bismuth, X-rays, Photovoltaics, Liquids

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Proceedings Article | 8 March 2013 Paper

Paper

Respiratory motion influence on catheter contact force during radio frequency ablation procedures

Martin Koch, Alexander Brost, Joachim Hornegger, Norbert Strobel

Proceedings Volume 8671, 86710D (2013) https://doi.org/10.1117/12.2006369

KEYWORDS: Veins, Heart, 3D modeling, Data modeling, Atrial fibrillation, Motion analysis, X-ray imaging, Fluoroscopy, Silver, Medicine

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Proceedings Article | 23 February 2012 Paper

Paper

Post-procedural evaluation of catheter contact force characteristics

Martin Koch, Alexander Brost, Atilla Kiraly, Norbert Strobel, Joachim Hornegger

Proceedings Volume 8315, 83152J (2012) https://doi.org/10.1117/12.912315

KEYWORDS: Visualization, 3D modeling, Atrial fibrillation, Data modeling, Veins, Electrophysiology, Silver, Medicine, Haptic technology

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Proceedings Article | 17 February 2012 Paper

Paper

Robust tracking of a virtual electrode on a coronary sinus catheter for atrial fibrillation ablation procedures

Wen Wu, Terrence Chen, Norbert Strobel, Dorin Comaniciu

Proceedings Volume 8316, 83162U (2012) https://doi.org/10.1117/12.911079

KEYWORDS: Electrodes, Atrial fibrillation, Detection and tracking algorithms, Image segmentation, X-rays, Automatic tracking, Model-based design, X-ray imaging, Motion models, Databases

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Proceedings Article | 17 February 2012 Paper

Paper

Real-time circumferential mapping catheter tracking for motion compensation in atrial fibrillation ablation procedures

Alexander Brost, Felix Bourier, Andreas Wimmer, Martin Koch, Atilla Kiraly, Rui Liao, Klaus Kurzidim, Joachim Hornegger, Norbert Strobel

Proceedings Volume 8316, 83162V (2012) https://doi.org/10.1117/12.911338

KEYWORDS: 3D modeling, 3D image processing, Image segmentation, X-rays, Motion models, Atrial fibrillation, Fluoroscopy, X-ray imaging, Electrophysiology, Image registration

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Proceedings Article | 17 February 2012 Paper

Paper

Real-time motion-adjusted augmented fluoroscopy system for navigation during electrophysiology procedures

Atilla Kiraly, Julien Barbot, Wen Wu, Terrence Chen, Alexander Brost, Martin Koch, Carolin Jakob, Tanja Kurzendorfer, Norbert Strobel

Proceedings Volume 8316, 831626 (2012) https://doi.org/10.1117/12.912298

KEYWORDS: Heart, Fluoroscopy, Navigation systems, 3D modeling, Electrophysiology, Veins, 3D image processing, Electrodes, X-rays, Signal detection

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Proceedings Article | 17 February 2012 Paper

Paper

Cryo-balloon catheter position planning using AFiT

Andreas Kleinoeder, Alexander Brost, Felix Bourier, Martin Koch, Klaus Kurzidim, Joachim Hornegger, Norbert Strobel

Proceedings Volume 8316, 83162R (2012) https://doi.org/10.1117/12.911303

KEYWORDS: Veins, Transparency, Visualization, Image segmentation, Atrial fibrillation, Heart, 3D image processing, Electrophysiology, Cameras, Tissues

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Proceedings Article | 17 February 2012 Paper

Paper

Navigation for fluoroscopy-guided cryo-balloon ablation procedures of atrial fibrillation

Felix Bourier, Alexander Brost, Andreas Kleinoeder, Tanja Kurzendorfer, Martin Koch, Attila Kiraly, Hans-Juergen Schneider, Joachim Hornegger, Norbert Strobel, Klaus Kurzidim

Proceedings Volume 8316, 831627 (2012) https://doi.org/10.1117/12.911446

KEYWORDS: Optical spheres, Atrial fibrillation, Fluoroscopy, Visualization, Veins, 3D image processing, Optical tracking, 3D modeling, Magnetic resonance imaging, Silver

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Proceedings Article | 2 March 2011 Paper

Paper

Motion compensation by registration-based catheter tracking

Alexander Brost, Andreas Wimmer, Rui Liao, Joachim Hornegger, Norbert Strobel

Proceedings Volume 7964, 79641O (2011) https://doi.org/10.1117/12.877650

KEYWORDS: Image segmentation, X-rays, Motion models, Fluoroscopy, 3D image processing, Motion estimation, Atrial fibrillation, Veins, X-ray imaging, Image registration

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Proceedings Article | 2 March 2011 Paper

Paper

First steps towards initial registration for electrophysiology procedures

Alexander Brost, Felix Bourier, Liron Yatziv, Martin Koch, Joachim Hornegger, Norbert Strobel, Klaus Kurzidim

Proceedings Volume 7964, 79641P (2011) https://doi.org/10.1117/12.877654

KEYWORDS: Image registration, Magnetic resonance imaging, Veins, X-rays, Electrophysiology, Atrial fibrillation, X-ray imaging, Visualization, X-ray computed tomography, 3D image processing

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Proceedings Article | 24 February 2010 Paper

Paper

3D model-based catheter tracking for motion compensation in EP procedures

Alexander Brost, Rui Liao, Joachim Hornegger, Norbert Strobel

Proceedings Volume 7625, 762507 (2010) https://doi.org/10.1117/12.843999

KEYWORDS: 3D modeling, Motion models, 3D image processing, Motion estimation, Model-based design, X-rays, Fluoroscopy, Heart, X-ray imaging, Atrial fibrillation

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Proceedings Article | 13 March 2009 Paper

Paper

Accuracy of x-ray image-based 3D localization from two C-arm views: a comparison between an ideal system and a real device

Alexander Brost, Norbert Strobel, Liron Yatziv, Wesley Gilson, Bernhard Meyer, Joachim Hornegger, Jonathan Lewin, Frank Wacker

Proceedings Volume 7261, 72611Z (2009) https://doi.org/10.1117/12.811147

KEYWORDS: Imaging systems, X-rays, 3D modeling, X-ray imaging, Matrices, 3D image processing, Medicine, Sensors, Silver, Calibration

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arm X-ray imaging devices are commonly used for minimally invasive cardiovascular or other interventional procedures. Calibrated state-of-the-art systems can, however, not only be used for 2D imaging but also for three-dimensional reconstruction either using tomographic techniques or even stereotactic approaches. To evaluate the accuracy of X-ray object localization from two views, a simulation study assuming an ideal imaging geometry was carried out first. This was backed up with a phantom experiment involving a real C-arm angiography system. Both studies were based on a phantom comprising five point objects. These point objects were projected onto a flat-panel detector under different C-arm view positions. The resulting 2D positions were perturbed by adding Gaussian noise to simulate 2D point localization errors. In the next step, 3D point positions were triangulated from two views. A 3D error was computed by taking differences between the reconstructed 3D positions using the perturbed 2D positions and the initial 3D positions of the five points. This experiment was repeated for various C-arm angulations involving angular differences ranging from 15° to 165°. The smallest 3D reconstruction error was achieved, as expected, by views that were 90° degrees apart. In this case, the simulation study yielded a 3D error of 0.82 mm ± 0.24 mm (mean ± standard deviation) for 2D noise with a standard deviation of 1.232 mm (4 detector pixels). The experimental result for this view configuration obtained on an AXIOM Artis C-arm (Siemens AG, Healthcare Sector, Forchheim, Germany) system was 0.98 mm ± 0.29 mm, respectively. These results show that state-of-the-art C-arm systems can localize instruments with millimeter accuracy, and that they can accomplish this almost as well as an idealized theoretical counterpart. High stereotactic localization accuracy, good patient access, and CT-like 3D imaging capabilities render state-of-the-art C-arm systems ideal devices for X-ray based minimally invasive procedures.

Proceedings Article | 28 March 2007 Paper

Paper

Cardiac C-arm CT: 4D non-model based heart motion estimation and its application

M. Prümmer, R. Fahrig, L. Wigström, J. Boese, G. Lauritsch, N. Strobel, J. Hornegger

Proceedings Volume 6510, 651015 (2007) https://doi.org/10.1117/12.708151

KEYWORDS: Heart, Motion estimation, Signal to noise ratio, 3D image processing, Image registration, Temporal resolution, Electrocardiography, Motion measurement, 3D image reconstruction, Data acquisition

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Proceedings Article | 29 April 2005 Paper

Paper

Estimating 0th and 1st moments in C-arm CT data for extrapolating truncated projections

Jared Starman, Norbert Pelc, Norbert Strobel, Rebecca Fahrig

Proceedings Volume 5747, (2005) https://doi.org/10.1117/12.596041

KEYWORDS: Reconstruction algorithms, Head, Error analysis, Sensors, Abdomen, Image analysis, Computed tomography, Detection and tracking algorithms, Computer simulations, Fluctuations and noise

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Proceedings Article | 20 April 2005 Paper

Paper

X-ray scatter correction for cone-beam CT using moving blocker array

Lei Zhu, Norbert Strobel, Rebecca Fahrig

Proceedings Volume 5745, (2005) https://doi.org/10.1117/12.594699

KEYWORDS: Reconstruction algorithms, Monte Carlo methods, Sensors, Error analysis, Computer simulations, Statistical analysis, Data acquisition, X-rays, Scatter measurement, Computing systems

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Proceedings Article | 11 March 2005 Paper

Paper

Exact 3D cone-beam reconstruction from two short-scans using a C-arm imaging system

Krishnakumar Ramamurthi, Norbert Strobel, Jerry Prince

Proceedings Volume 5674, (2005) https://doi.org/10.1117/12.597672

KEYWORDS: Sensors, Reconstruction algorithms, Optical spheres, Imaging systems, Image segmentation, Detection and tracking algorithms, 3D image processing, X-ray imaging, Computer simulations, Image filtering

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Proceedings Article | 26 October 2004 Paper

Paper

C-arm CT with XRIIs and digital flat panels: a review

Rebecca Fahrig, Arundhuti Ganguly, Jared Starman, Norbert Strobel

Proceedings Volume 5535, (2004) https://doi.org/10.1117/12.561147

KEYWORDS: Sensors, Modulation transfer functions, Computed tomography, Imaging systems, 3D image processing, Image quality, X-ray computed tomography, Image resolution, 3D acquisition, Data acquisition

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Proceedings Article | 5 June 2003 Paper

Paper

Improving 3D image quality of x-ray C-arm imaging systems by using properly designed pose determination systems for calibrating the projection geometry

Norbert Strobel, Benno Heigl, Thomas Brunner, Oliver Schuetz, Matthias Mitschke, Karl Wiesent, Thomas Mertelmeier

Proceedings Volume 5030, (2003) https://doi.org/10.1117/12.479945

KEYWORDS: Calibration, Sensors, Matrices, Imaging systems, Cameras, X-rays, 3D image processing, Image quality, Reconstruction algorithms, Head

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SPIE Journal Paper | 1 July 1996

Nonlinear unsharp masking methods for image contrast enhancement

Giovanni Ramponi, Norbert Strobel, Sanjit Mitra, Tian-Hu Yu

JEI, Vol. 5, Issue 03, (July 1996) https://doi.org/10.1117/12.10.1117/12.242618

KEYWORDS: Image enhancement, Nonlinear filtering, Linear filtering, Image processing, Image filtering, Image contrast enhancement, Electronic filtering, Sensors, Bandpass filters, Visualization

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Proceedings Article | 21 November 1995 Paper

Paper

Approach to efficient storage, retrieval, and browsing of large-scale image databases

Norbert Strobel, Sanjit Mitra, B. Manjunath

Proceedings Volume 2606, (1995) https://doi.org/10.1117/12.227255

KEYWORDS: Image filtering, Image retrieval, Databases, Wavelets, Quantization, Image storage, Wavelet transforms, Discrete wavelet transforms, Visualization, Electronic filtering

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Showing 5 of 22 publications

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