Dr. Thomas Böttger Profile

Dr. Thomas Böttger

at Siemens Healthineers

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 17 March 2008 Paper

Radiation therapy planning and simulation with magnetic resonance images

Thomas Boettger, Tufve Nyholm, Magnus Karlsson, Chandrasekhar Nunna, Juan Carlos Celi

Proceedings Volume 6918, 69181C (2008) https://doi.org/10.1117/12.770016

KEYWORDS: Image segmentation, Skin, Magnetic resonance imaging, Bone, Tissues, Computed tomography, Radiotherapy, Data acquisition, Head, Magnetism

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Proceedings Article | 8 March 2007 Paper

Radial subsampling for fast cost function computation in intensity-based 3D image registration

Thomas Boettger, Ivo Wolf, Hans-Peter Meinzer, Juan Carlos Celi

Proceedings Volume 6512, 651222 (2007) https://doi.org/10.1117/12.708145

KEYWORDS: Image registration, 3D image processing, Lung, Image restoration, Image resolution, Natural surfaces, Statistical analysis, Data centers, Computed tomography, Oncology

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Proceedings Article | 10 March 2006 Paper

A system for rapid prototyping of hearts with congenital malformations based on the medical imaging interaction toolkit (MITK)

Ivo Wolf, Thomas Böttger, Urte Rietdorf, Daniel Maleike, Gerald Greil, Ludger Sieverding, Stephan Miller, Sibylle Mottl-Link, Hans-Peter Meinzer

Proceedings Volume 6141, 61410M (2006) https://doi.org/10.1117/12.654899

KEYWORDS: Image segmentation, Heart, Data modeling, 3D modeling, Rapid manufacturing, Binary data, Medical imaging, Imaging systems, 3D image processing, Surgery

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Proceedings Article | 29 April 2005 Paper

Interactive constraints for 3D-simplex meshes

Thomas Boettger, Tobias Kunert, Hans-Peter Meinzer, Ivo Wolf

Proceedings Volume 5747, (2005) https://doi.org/10.1117/12.595218

KEYWORDS: Image segmentation, 3D modeling, Lung, Magnetic resonance imaging, Data modeling, Medical imaging, 3D image processing, Heart, Process modeling, Image processing

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Proceedings Article | 5 May 2004 Paper

An interactive system for volume segmentation in computer-assisted surgery

Tobias Kunert, Tobias Heimann, Andre Schroter, Max Schobinger, Thomas Bottger, Matthias Thorn, Ivo Wolf, Uwe Engelmann, Hans-Peter Meinzer

Proceedings Volume 5367, (2004) https://doi.org/10.1117/12.535096

KEYWORDS: Image segmentation, Surgery, Human-machine interfaces, Liver, Computing systems, Image processing, Visualization, Volume rendering, Medical imaging, Radiology

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Proceedings Article | 5 May 2004 Paper

The medical imaging interaction toolkit (MITK): a toolkit facilitating the creation of interactive software by extending VTK and ITK

Ivo Wolf, Marcus Vetter, Ingmar Wegner, Marco Nolden, Thomas Bottger, Mark Hastenteufel, Max Schobinger, Tobias Kunert, Hans-Peter Meinzer

Proceedings Volume 5367, (2004) https://doi.org/10.1117/12.535112

KEYWORDS: Visualization, Medical imaging, Image segmentation, Surgery, 3D vision, Data acquisition, 3D image processing, Image processing, Image processing algorithms and systems, Data processing

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Proceedings Article | 1 July 2003 Paper

Material optimization of Er3+:Y2SiO5 at 1.5 um for optical processing, memory, and laser frequency stabilization applications

Thomas Boettger, Yongchen Sun, Charles Thiel, Rufus Cone

Proceedings Volume 4988, (2003) https://doi.org/10.1117/12.474784

KEYWORDS: Erbium, Magnetism, Diffusion, Crystals, Ions, Absorption, Laser stabilization, Signal processing, Hole burning spectroscopy, Spectroscopy

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Spatial-spectral holography using spectral hole burning materials is a powerful technique for performing real-time, wide-bandwidth information storage and signal processing. For operation in the important 1.5 μm communication band, the material Er³⁺:Y₂SiO₅ enables applications such as laser frequency stabilization, all-optical correlators, analog signal processing, and data storage. Site-selective absorption and emission spectroscopy identified spectral hole burning transitions and excited state T₁ lifetimes in the 1.5 μm spectral region. The effects of crystal temperature, Er³⁺-dopant concentration, magnetic field strength, and crystal orientation on spectral diffusion were explored using stimulated photon echo spectroscopy, which is the "prototype" interaction mechanism for device applications. The performance of Er³⁺:Y₂SiO₅ and related Er³⁺ materials has been dramatically enhanced by reducing the effect of spectral diffusion on the coherence lifetime T₂ through fundamental material design coupled with the application of an external magnetic field oriented along specific directions. A preferred magnetic field orientation that maximized T₂ by minimizing the effects of spectral diffusion was determined using the results of angle-dependent Zeeman spectroscopy. The observed linewidth broadening due to spectral diffusion was successfully modeled by considering the effect of one-phonon (direct) processes on Er³⁺ - Er³⁺ interactions. The reported studies improved our understanding of Er³⁺ materials, explored the range of conditions and material parameters required to optimize performance for specific applications, and enabled measurement of the narrowest optical resonance ever observed in a solid-with a homogeneous linewidth of 73 Hz. With the optimized materials and operating conditions, photon echoes were observed up to temperatures of 5 K, enabling 0.5 GHz bandwidth optical signal processing at 4.2 K and providing the possibility for operation with a closed-cycle cryocooler.

Proceedings Article | 9 July 2001 Paper

Semiconductor lasers stabilized to spectral holes in rare-earth crystals

Rufus Cone, Thomas Boettger, G. Pryde, N. Strickland, Yongchen Sun, Peter Sellin, John Carlsten

Proceedings Volume 4283, (2001) https://doi.org/10.1117/12.432583

KEYWORDS: Hole burning spectroscopy, Laser stabilization, Ions, Crystals, Thulium, Semiconductor lasers, Erbium, Absorption, Laser crystals, YAG lasers

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Showing 5 of 8 publications

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