Dr. Katharina Hahn Profile

Dr. Katharina Hahn

at Siemens Healthineers

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 15 February 2021 Poster + Presentation + Paper

Estimation of statistical weights for model-based iterative CT reconstruction

V. Haase, K. Stierstorfer, K. Hahn, H. Schöndube, A. Maier, F. Noo

Proceedings Volume 11595, 115953P (2021) https://doi.org/10.1117/12.2581566

KEYWORDS: Statistical analysis, Model-based design, Statistical modeling, CT reconstruction, Tissues, Image quality, Data analysis, Computed tomography

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Proceedings Article | 16 March 2020 Presentation + Paper

An improved combination of ordered subsets and momentum for fast model-based iterative CT reconstruction

V. Haase, K. Stierstorfer, K. Hahn, H. Schöndube, A. Maier, F. Noo

Proceedings Volume 11312, 113121N (2020) https://doi.org/10.1117/12.2549733

KEYWORDS: Model-based design, CT reconstruction, Reconstruction algorithms, Medicine, Computed tomography, Quantitative analysis, Pattern recognition, Computer science, Iterative methods

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Proceedings Article | 1 March 2019 Presentation + Paper

Exploring the space between smoothed and non-smooth total variation for 3D iterative CT reconstruction

V. Haase, K. Stierstorfer, K. Hahn, H. Schöndube, A. Maier, F. Noo

Proceedings Volume 10948, 1094820 (2019) https://doi.org/10.1117/12.2513375

KEYWORDS: CT reconstruction, Image quality, Sensors, Reconstruction algorithms, Computed tomography, Image restoration, X-ray computed tomography, Optimization (mathematics), Scanners, 3D image processing

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SPIE Journal Paper | 22 December 2016

Dose-efficient ultrahigh-resolution scan mode using a photon counting detector computed tomography system

Shuai Leng, Zhicong Yu, Ahmed Halaweish, Steffen Kappler, Katharina Hahn, Andre Henning, Zhoubo Li, John Lane, David Levin, Steven Jorgensen, Erik Ritman, Cynthia McCollough

JMI, Vol. 3, Issue 04, 043504, (December 2016) https://doi.org/10.1117/12.10.1117/1.JMI.3.4.043504

KEYWORDS: Sensors, Lung, Spatial resolution, Computed tomography, Photon counting, Scanners, Bone, Modulation transfer functions, Head, Image quality

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SPIE Journal Paper | 14 December 2016

Noise performance of low-dose CT: comparison between an energy integrating detector and a photon counting detector using a whole-body research photon counting CT scanner

Zhicong Yu, Shuai Leng, Steffen Kappler, Katharina Hahn, Zhoubo Li, Ahmed F. Halaweish, Andre Henning, Cynthia McCollough

JMI, Vol. 3, Issue 04, 043503, (December 2016) https://doi.org/10.1117/12.10.1117/1.JMI.3.4.043503

KEYWORDS: Sensors, Computed tomography, Photon counting, Scanners, Spatial resolution, Medicine, X-ray computed tomography, X-rays, Data acquisition, Interference (communication)

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Proceedings Article | 4 April 2016 Paper

Low-dose performance of a whole-body research photon-counting CT scanner

Zhicong Yu, Shuai Leng, Steffen Kappler, Katharina Hahn, Zhoubo Li, Ahmed Halaweish, Andre Henning, Erik Ritman, Cynthia McCollough

Proceedings Volume 9783, 97835Q (2016) https://doi.org/10.1117/12.2217240

KEYWORDS: Computed tomography, Scanners, Photon counting, Image quality, Data acquisition, Modulation transfer functions, X-ray computed tomography, Medicine, Spatial resolution

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Proceedings Article | 1 April 2016 Paper

Iterative CT reconstruction using coordinate descent with ordered subsets of data

F. Noo, K. Hahn, H. Schöndube, K. Stierstorfer

Proceedings Volume 9783, 97834A (2016) https://doi.org/10.1117/12.2217558

KEYWORDS: CT reconstruction, Sensors, Image restoration, X-ray computed tomography, Image filtering, Chemical elements, Image quality, Computed tomography, Medical imaging, Image analysis

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Proceedings Article | 25 March 2016 Paper

A high-resolution imaging technique using a whole-body, research photon counting detector CT system

S. Leng, Z. Yu, A. Halaweish, S. Kappler, K. Hahn, A. Henning, Z. Li, J. Lane, D. Levin, S. Jorgensen, E. Ritman, C. McCollough

Proceedings Volume 9783, 97831I (2016) https://doi.org/10.1117/12.2217180

KEYWORDS: Spatial resolution, Modulation transfer functions, Lung, Bone, Photon counting, Sensors, Imaging systems, Computed tomography, Image quality, Scanners, X-ray computed tomography, Heart

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Proceedings Article | 25 March 2016 Paper

Material decomposition and virtual non-contrast imaging in photon counting computed tomography: an animal study

R. Gutjahr, C. Polster, S. Kappler, H. Pietsch, G. Jost, K. Hahn, F. Schöck, M. Sedlmair, T. Allmendinger, B. Schmidt, B. Krauss, T. Flohr

Proceedings Volume 9783, 97831G (2016) https://doi.org/10.1117/12.2216861

KEYWORDS: Xenon, Lung, X-rays, Tissues, Gadolinium, Sensors, Detection and tracking algorithms, Photon counting, Computed tomography, 3D image enhancement

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Proceedings Article | 25 March 2016 Paper

Improving material decomposition by spectral optimization of photon counting computed tomography

C. Polster, K. Hahn, R. Gutjahr, F. Schöck, S. Kappler, O. Dietrich, T. Flohr

Proceedings Volume 9783, 97831O (2016) https://doi.org/10.1117/12.2216711

KEYWORDS: Sensors, X-ray detectors, X-rays, Photon counting, Computed tomography, Photodetectors, Mass attenuation coefficient, CT reconstruction, X-ray computed tomography, Image quality standards, Ytterbium, Monte Carlo methods, Bone, Iodine, Thulium

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Proceedings Article | 24 March 2016 Paper

Importance of the grayscale in early assessment of image quality gains with iterative CT reconstruction

F. Noo, K. Hahn, Z. Guo

Proceedings Volume 9787, 978712 (2016) https://doi.org/10.1117/12.2217689

KEYWORDS: Image quality, CT reconstruction, X-ray computed tomography, Yield improvement, Image filtering, Image display, Image resolution, Performance modeling, Quantization, Computed tomography

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Proceedings Article | 18 March 2015 Paper

Iterative CT reconstruction with small pixel size: distance-driven forward projector versus Joseph's

K. Hahn, U. Rassner, H. Davidson, H. Schöndube, K. Stierstorfer, J. Hornegger, F. Noo

Proceedings Volume 9412, 94123D (2015) https://doi.org/10.1117/12.2079286

KEYWORDS: Projection systems, Sensors, X-ray computed tomography, CT reconstruction, X-rays, Statistical analysis, Image quality, Modulation transfer functions, X-ray imaging, Computed tomography

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Proceedings Article | 17 March 2015 Paper

Influence of the grayscale on phantom-based image quality assessment in x-ray computed tomography

F. Noo, K. Hahn, H. Davidson, U. Rassner, M. Heilbrun

Proceedings Volume 9416, 94160G (2015) https://doi.org/10.1117/12.2082914

KEYWORDS: Image quality, X-ray computed tomography, Statistical analysis, Image processing, Computed tomography, Medical imaging, Data modeling, Sensors, Bone, Quantization

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Proceedings Article | 19 March 2014 Paper

FINESSE: a Fast Iterative Non-linear Exact Sub-space SEarch based algorithm for CT imaging

K. Schmitt, H. Schöndube, Karl Stierstorfer, J. Hornegger, F. Noo

Proceedings Volume 9033, 90330Q (2014) https://doi.org/10.1117/12.2043574

KEYWORDS: Reconstruction algorithms, Computed tomography, X-ray computed tomography, Medical imaging, Image processing, Algorithm development, Statistical modeling, Data modeling, Image restoration, Image denoising

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Proceedings Article | 28 March 2013 Paper

A nonparametric approach for statistical comparison of results from alternative forced choice experiments

Frédéric Noo, Adam Wunderlich, Dominic Heuscher, Katharina Schmitt, Zhicong Yu

Proceedings Volume 8673, 86730F (2013) https://doi.org/10.1117/12.2008154

KEYWORDS: Reconstruction algorithms, Image processing, X-ray computed tomography, Image quality, Image acquisition, X-rays, Image restoration, X-ray imaging, Statistical inference, Image quality standards

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Proceedings Article | 6 March 2013 Paper

Comparative evaluation of linear interpolation models for iterative reconstruction in X-ray CT

K. Schmitt, H. Schöndube, K. Stierstorfer, J. Hornegger, F. Noo

Proceedings Volume 8668, 86681N (2013) https://doi.org/10.1117/12.2008175

KEYWORDS: Modulation transfer functions, Sensors, Reconstruction algorithms, X-rays, X-ray computed tomography, Image resolution, Image quality, Head, Image analysis, Medical imaging

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Showing 5 of 16 publications

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