Quantitative optoacoustic signal extraction using sparse signal representationAmir Rosenthal
Institute for Biological and Medical Imaging, Helmholtz Center Munich and Technical University of Munich, Neuherberg, D 85764, Germany
IEEE Trans Med Imaging 28:1997-2006. 2009
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- Optoacoustic methods for frequency calibration of ultrasonic sensors
Amir Rosenthal
Institute for Biological and Medical Imaging IBMI, Technical University of Munich and Helmholtz Center Munich, Neuherberg, Germany
IEEE Trans Ultrason Ferroelectr Freq Control 58:316-26. 2011
..The methods are successfully confirmed experimentally by measuring the frequency response of a common piezoelectric detector having a cylindrically focused shape...
- Fast semi-analytical model-based acoustic inversion for quantitative optoacoustic tomography
Amir Rosenthal
Institute for Biological and Medical Imaging, and Chair for Biological Imaging, Technische Universität of München and Helmholtz Zentrum München, 85764 Neuherberg, Germany
IEEE Trans Med Imaging 29:1275-85. 2010
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Model-based optoacoustic inversions with incomplete projection dataAndreas Buehler
Institute for Biological and Medical Imaging, Technische Universität München und Helmholtz Zentrum München, Ingoldstädter Landstrafsse 1, D 85764 Neuherberg, Germany
Med Phys 38:1694-704. 2011
..In many tomographic imaging scenarios, however, only limited-view or partial projection data are available, which has been shown to generate image artifacts and overall loss of quantification accuracy...
- Multispectral optoacoustic tomography by means of normalized spectral ratio
Thomas Jetzfellner
Institute for Biological and Medical Imaging, Technische Universität München and Helmholtz Zentrum München, Ingolstaedter Landstr 1, 85764 Neuherberg, Germany
Opt Lett 36:4176-8. 2011
..Herein we introduce a spectral ratio approach that accounts for photon fluence variations. The performance and imaging improvement achieved with the proposed method is showcased both numerically and experimentally in phantoms and mice...
- Efficient framework for model-based tomographic image reconstruction using wavelet packets
Amir Rosenthal
Institute for Biological and Medical Imaging, Technical University of Munich and Helmholtz Center Munich, Neuherberg, Germany
IEEE Trans Med Imaging 31:1346-57. 2012
..The performance of the new methodology is demonstrated for the case of 2-D optoacoustic tomography for both numerically generated and experimental data...
- Spatial characterization of the response of a silica optical fiber to wideband ultrasound
Amir Rosenthal
Institute for Biological and Medical Imaging IBMI, Technical University of Munich and Helmholtz Center Munich, Neuherberg, Germany
Opt Lett 37:3174-6. 2012
..This property reveals new possibilities for high-performance imaging using fiber-based ultrasound sensors, where knowledge of the sensor's spatial sensitivity map is generally required...
- Model-based optoacoustic inversion with arbitrary-shape detectors
Amir Rosenthal
Institute for Biological and Medical Imaging, Technical University of Munich and Helmholtz Center Munich, 85764 Neuherberg, Germany
Med Phys 38:4285-95. 2011
..This effect may lead to attenuation or distortion in the recorded signal and, consequently, in the reconstructed image...
- Optoacoustic tomography with varying illumination and non-uniform detection patterns
Thomas Jetzfellner
Institute for Biological and Medical Imaging IBMI, Technical University of Munich and Helmholtz Center Munich, Ingolstaedter Landstr 1, 85764 Neuherberg, Germany
J Opt Soc Am A Opt Image Sci Vis 27:2488-95. 2010
..Significant improvements in image fidelity and quantification are showcased both numerically and experimentally on tissue phantoms and mice...
- Model-based optoacoustic imaging using focused detector scanning
Miguel Ángel Araque Caballero
Institute for Biological and Medical Imaging IBMI, Technical University of Munich and Helmholtz Center Munich, Ingoldstädter Landstrasse 1, Neuherberg 85764, Germany
Opt Lett 37:4080-2. 2012
..The proposed method shows superior imaging performance over previously considered techniques...
- Wideband optical sensing using pulse interferometry
Amir Rosenthal
Institute for Biological and Medical Imaging IBMI, Technical University of Munich and Helmholtz Center Munich, Neuherberg, Germany
Opt Express 20:19016-29. 2012
..The achieved sensitivity is equivalent to the theoretical limit of a 6 MHz narrow-line width laser, which is 40 times higher than what can be usually achieved by incoherent interferometry for the same optical resonator...
- High-sensitivity compact ultrasonic detector based on a pi-phase-shifted fiber Bragg grating
Amir Rosenthal
Institute for Biological and Medical Imaging IBMI, Technical University of Munich and Helmholtz Center Munich, Ingoldstädter Landstrasse 1, 85764 Neuherberg, Germany
Opt Lett 36:1833-5. 2011
..This performance makes our design attractive for medical imaging applications, such as optoacoustic tomography, in which compact, sensitive, and wideband acoustic detectors are required...
