Dr. Erik Fredenberg Profile

Dr. Erik Fredenberg

Scientist at KTH Royal Institute of Technology

SPIE Involvement:

Author

Publications (21)

SPIE Journal Paper | 20 November 2024 Open Access

Deep learning estimation of proton stopping power with photon-counting computed tomography: a virtual study

Karin Larsson, Dennis Hein, Ruihan Huang, Daniel Collin, Andrea Scotti, Erik Fredenberg, Jonas Andersson, Mats Persson

JMI, Vol. 11, Issue S1, S12809, (November 2024) https://doi.org/10.1117/12.10.1117/1.JMI.11.S1.S12809

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Proceedings Article | 9 March 2017 Presentation + Paper

Lesion characterization in spectral photon-counting tomosynthesis

Björn Cederström, Erik Fredenberg, Karl Berggren, Klaus Erhard, Mats Danielsson, Matthew Wallis

Proceedings Volume 10132, 1013205 (2017) https://doi.org/10.1117/12.2253966

KEYWORDS: Mammography, Photon counting, Tissues, Imaging spectroscopy, Solids, Radiography, Breast, Aluminum, Tumors, Calibration, Interference (communication), X-rays, Sensors

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Proceedings Article | 22 March 2016 Paper

Rayleigh imaging in spectral mammography

Karl Berggren, Mats Danielsson, Erik Fredenberg

Proceedings Volume 9783, 97830A (2016) https://doi.org/10.1117/12.2217048

KEYWORDS: Mammography, Imaging spectroscopy, Imaging systems, Rayleigh scattering, Signal attenuation, Photon counting, Dual energy imaging, Breast, Quantitative analysis, Photoelectric effect, Calibration, Sensors, Compton scattering

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Proceedings Article | 18 March 2015 Paper

Physical characterization of photon-counting tomosynthesis

Karl Berggren, Mats Lundqvist, Björn Cederström, Mats Danielsson, Erik Fredenberg

Proceedings Volume 9412, 941259 (2015) https://doi.org/10.1117/12.2075192

KEYWORDS: Modulation transfer functions, Sensors, Point spread functions, Photodetectors, X-rays, Image quality, 3D modeling, 3D image processing, Mammography, X-ray imaging

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Proceedings Article | 18 March 2015 Paper

X-ray attenuation of adipose breast tissue: in-vitro and in-vivo measurements using spectral imaging

Erik Fredenberg, Klaus Erhard, Karl Berggren, David Dance, Kenneth Young, Björn Cederström, Henrik Johansson, Mats Lundqvist, Elin Moa, Hanno Homan, Paula Willsher, Fleur Kilburn-Toppin, Matthew Wallis

Proceedings Volume 9412, 94121U (2015) https://doi.org/10.1117/12.2081747

KEYWORDS: Tissues, Signal attenuation, In vitro testing, Breast, X-rays, In vivo imaging, Aluminum, X-ray imaging, Mammography, Polymethylmethacrylate

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SPIE Journal Paper | 28 August 2014

Energy weighting improves dose efficiency in clinical practice: implementation on a spectral photon-counting mammography system

Johan Berglund, Henrik Johansson, Mats Lundqvist, Björn Cederström, Erik Fredenberg

JMI, Vol. 1, Issue 03, 031003, (August 2014) https://doi.org/10.1117/12.10.1117/1.JMI.1.3.031003

KEYWORDS: Mammography, Breast, Polymethylmethacrylate, Energy efficiency, Tissues, Sensors, X-ray imaging, Photonics systems, X-rays, Computer simulations

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Proceedings Article | 19 March 2014 Paper

Spectral lesion characterization on a photon-counting mammography system

Klaus Erhard, Erik Fredenberg, Hanno Homann, Ewald Roessl

Proceedings Volume 9033, 90331F (2014) https://doi.org/10.1117/12.2043028

KEYWORDS: Aluminum, Mammography, Breast, Calibration, Tissues, Tumors, Polymethylmethacrylate, Solids, Photons, Signal attenuation

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Proceedings Article | 19 March 2014 Paper

Cascaded systems modeling of signal, noise, and DQE for x-ray photon counting detectors

J. Xu, W. Zbijewski, G. Gang, J. Stayman, K. Taguchi, M. Lundqvist, E. Fredenberg, J. Carrino, J. Siewerdsen

Proceedings Volume 9033, 903320 (2014) https://doi.org/10.1117/12.2043515

KEYWORDS: Sensors, Systems modeling, Modulation transfer functions, Signal detection, Imaging systems, Photon counting, Performance modeling, X-rays, Interference (communication), X-ray detectors

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Proceedings Article | 19 March 2014 Paper

Energy weighting improves the image quality of spectral mammograms: Implementation on a photon-counting mammography system

Johan Berglund, Henrik Johansson, Hanns-Ingo Maack, Erik Fredenberg

Proceedings Volume 9033, 90331E (2014) https://doi.org/10.1117/12.2042238

KEYWORDS: Mammography, Image quality, Breast, Tissues, Signal to noise ratio, Photonics systems, Imaging systems, X-ray imaging, Photon counting, Signal detection

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Proceedings Article | 6 March 2013 Paper

Measurement of breast-tissue x-ray attenuation by spectral mammography: first results on cyst fluid

Erik Fredenberg, David Dance, Paula Willsher, Miriam von Tiedemann, Kenneth Young, Matthew Wallis

Proceedings Volume 8668, 866820 (2013) https://doi.org/10.1117/12.2008026

KEYWORDS: Signal attenuation, X-rays, X-ray imaging, Polymethylmethacrylate, Mammography, Aluminum, Water, Breast, Tissues, X-ray technology

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Proceedings Article | 3 March 2012 Paper

Photon-counting spectral phase-contrast mammography

E. Fredenberg, E. Roessl, T. Koehler, U. van Stevendaal, I. Schulze-Wenck, N. Wieberneit, M. Stampanoni, Z. Wang, R. Kubik-Huch, N. Hauser, M. Lundqvist, M. Danielsson, M. Åslund

Proceedings Volume 8313, 83130F (2012) https://doi.org/10.1117/12.910615

KEYWORDS: Absorption, Phase contrast, Sensors, Interferometry, Fusion energy, Tumors, Image fusion, Photodetectors, Signal detection, Mammography

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Proceedings Article | 3 March 2012 Paper

Lesion characterization using spectral mammography

B. Norell, E. Fredenberg, K. Leifland, M. Lundqvist, B. Cederström

Proceedings Volume 8313, 83130I (2012) https://doi.org/10.1117/12.913032

KEYWORDS: Tissues, Breast, Mammography, Photon counting, Tumors, Solids, Signal attenuation, Statistical analysis, Aluminum, X-rays

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Proceedings Article | 17 March 2011 Paper

Evaluation of photon-counting spectral breast tomosynthesis

Nils Dahlman, Erik Fredenberg, Magnus Åslund, Mats Lundqvist, Felix Diekmann, Mats Danielsson

Proceedings Volume 7961, 796114 (2011) https://doi.org/10.1117/12.876874

KEYWORDS: Modulation transfer functions, Imaging spectroscopy, Tumors, Tissues, Breast, Imaging systems, Sensors, Absorption, X-rays, 3D modeling

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Proceedings Article | 17 March 2011 Paper

Optimization of mammography with respect to anatomical noise

E. Fredenberg, B. Svensson, M. Danielsson, B. Lazzari, B. Cederström

Proceedings Volume 7961, 796112 (2011) https://doi.org/10.1117/12.877985

KEYWORDS: Breast, Mammography, Tumors, Tissues, Imaging systems, X-rays, Sensors, Interference (communication), Target detection, Skin

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Proceedings Article | 19 March 2010 Paper

Observer model optimization of a spectral mammography system

Erik Fredenberg, Magnus Åslund, Björn Cederström, Mats Lundqvist, Mats Danielsson

Proceedings Volume 7622, 762210 (2010) https://doi.org/10.1117/12.845480

KEYWORDS: Tumors, Absorption, Sensors, Imaging spectroscopy, Imaging systems, Mammography, Breast, Image filtering, X-rays, Signal attenuation

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Proceedings Article | 13 March 2009 Paper

A photon-counting detector for dual-energy breast tomosynthesis

Erik Fredenberg, Mats Lundqvist, Magnus Åslund, Magnus Hemmendorff, Björn Cederström, Mats Danielsson

Proceedings Volume 7258, 72581J (2009) https://doi.org/10.1117/12.813037

KEYWORDS: Sensors, Modulation transfer functions, Breast, Point spread functions, Silicon, Electronic imaging, Absorption, Photodetectors, Logic, Iodine

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Proceedings Article | 13 March 2009 Paper

Photon-counting CT with silicon detectors: feasibility for pediatric imaging

Moa Yveborg, Cheng Xu, Erik Fredenberg, Mats Danielsson

Proceedings Volume 7258, 725825 (2009) https://doi.org/10.1117/12.813733

KEYWORDS: Sensors, Silicon, Photons, Compton scattering, Signal to noise ratio, Scattering, X-rays, X-ray detectors, Energy efficiency, Absorption

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Proceedings Article | 13 March 2009 Paper

Imaging of small children with a prototype for photon counting tomosynthesis

Lilián del Risco Norrlid, Erik Fredenberg, Magnus Hemmendorff, Christian Jackowski, Mats Danielsson

Proceedings Volume 7258, 72581O (2009) https://doi.org/10.1117/12.813677

KEYWORDS: Sensors, Prototyping, Photon counting, Computed tomography, Modulation transfer functions, Signal to noise ratio, Polymethylmethacrylate, X-ray computed tomography, Diagnostics, Visualization

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Proceedings Article | 18 March 2008 Paper

Imaging with multi-prism x-ray lenses

Erik Fredenberg, Björn Cederström, Magnus Åslund, Peter Nillius, Mats Lundqvist, Mats Danielsson

Proceedings Volume 6913, 691308 (2008) https://doi.org/10.1117/12.770434

KEYWORDS: Modulation transfer functions, X-rays, Optical filters, Collimators, X-ray imaging, Sensors, Aluminum, Mammography, Lenses, Absorption filters

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