Mr. Steven M. Jorgensen Profile

Steven M. Jorgensen

Electrical Engineer

SPIE Involvement:

Author

Publications (20)

SPIE Journal Paper | 4 December 2018

Evaluation of a photon counting Medipix3RX cadmium zinc telluride spectral x-ray detector

Jeffrey Marsh, Steven Jorgensen, David Rundle, Andrew J. Vercnocke, Shuai Leng, Philip Butler, Cynthia McCollough, Erik Ritman

JMI, Vol. 5, Issue 04, 043503, (December 2018) https://doi.org/10.1117/12.10.1117/1.JMI.5.4.043503

KEYWORDS: Sensors, X-ray detectors, X-rays, Photon counting, Mars, Cadmium, Zinc, X-ray imaging, X-ray sources, Scanners

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SPIE Journal Paper | 8 December 2017

Measuring arterial wall perfusion using photon-counting computed tomography (CT): improving CT number accuracy of artery wall using image deconvolution

Kishore Rajendran, Shuai Leng, Steven Jorgensen, Jill Anderson, Ahmed Halaweish, Dilbar Abdurakhimova, Erik Ritman, Cynthia McCollough

JMI, Vol. 4, Issue 04, 044006, (December 2017) https://doi.org/10.1117/12.10.1117/1.JMI.4.4.044006

KEYWORDS: Computed tomography, Arteries, Image deconvolution, Deconvolution, Optical computing, Point spread functions, 3D modeling, Imaging systems, Scanners, Animal model studies

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Proceedings Article | 9 March 2017 Paper

Detection of increased vasa vasorum in artery walls: improving CT number accuracy using image deconvolution

Kishore Rajendran, Shuai Leng, Steven Jorgensen, Dilbar Abdurakhimova, Erik Ritman, Cynthia McCollough

Proceedings Volume 10132, 101323O (2017) https://doi.org/10.1117/12.2255676

KEYWORDS: Computed tomography, Arteries, Image deconvolution, Point spread functions, Photon counting, X-ray computed tomography, Medicine, Image enhancement

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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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Proceedings Article | 4 October 2016 Paper

Arterial wall perfusion measured with photon counting spectral x-ray CT

Steven Jorgensen, Mark Korinek, Andrew Vercnocke, Jill Anderson, Ahmed Halaweish, Shuai Leng, Cynthia McCollough, Erik Ritman

Proceedings Volume 9967, 99670B (2016) https://doi.org/10.1117/12.2238817

KEYWORDS: X-rays, Arteries, X-ray computed tomography, Veins, Computed tomography, Photon counting, Blood, Sensors, Neck, Spatial resolution

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Proceedings Article | 3 October 2016 Paper

Evaluation of a photon counting Medipix3RX CZT spectral x-ray detector

Steven Jorgensen, Andrew Vercnocke, David Rundle, Philip Butler, Cynthia McCollough, Erik Ritman

Proceedings Volume 9969, 99690J (2016) https://doi.org/10.1117/12.2236501

KEYWORDS: X-rays, Sensors, X-ray detectors, X-ray imaging, Photon counting, X-ray sources, Image resolution, Cameras, Tin, Manufacturing

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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 | 18 March 2015 Paper

Initial results from a prototype whole-body photon-counting computed tomography system

Z. Yu, S. Leng, S. Jorgensen, Z. Li, R. Gutjahr, B. Chen, X. Duan, A. Halaweish, L. Yu, E. Ritman, C. McCollough

Proceedings Volume 9412, 94120W (2015) https://doi.org/10.1117/12.2082739

KEYWORDS: Prototyping, Iodine, Head, Modulation transfer functions, Spatial resolution, X-ray computed tomography, Sensors, Image quality, X-rays, Computed tomography

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Proceedings Article | 12 September 2014 Paper

CT image-based quantification of sub-pixel diameter microparticle accumulations in tissues using á priori biological information

Andrew Vercnocke, Jill Anderson, Steven Jorgensen, Erik Ritman

Proceedings Volume 9212, 92121C (2014) https://doi.org/10.1117/12.2062314

KEYWORDS: Particles, Sensors, Signal attenuation, X-rays, X-ray detectors, Tissues, Opacity, X-ray imaging, X-ray computed tomography, Nanoparticles

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Proceedings Article | 15 September 2011 Open Access

Biomedical spectral x-ray imaging: promises and challenges

Steven Jorgensen, Diane Eaker, Erik Ritman

Proceedings Volume 8143, 814302 (2011) https://doi.org/10.1117/12.904615

KEYWORDS: X-rays, X-ray imaging, X-ray computed tomography, Sensors, Photodetectors, Biomedical optics, X-ray sources, Imaging arrays, Photon counting, X-ray detectors

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Proceedings Article | 20 September 2010 Paper

Tomographic imaging of coherent x-ray scatter momentum transfer distribution using spectral x-ray detection and polycapillary optic

Diane Eaker, Steven Jorgensen, Anthony P. Butler, Erik Ritman

Proceedings Volume 7804, 78041O (2010) https://doi.org/10.1117/12.861508

KEYWORDS: X-rays, X-ray imaging, Signal attenuation, Sensors, Coherence imaging, Fluctuations and noise, X-ray detectors, X-ray optics, X-ray sources, Tomography

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Proceedings Article | 18 September 2008 Paper

Coherent x-ray scattering for discriminating bio-compatible materials in tissue scaffolds

Congwu Cui, Steven Jorgensen, Diane Eaker, Erik Ritman

Proceedings Volume 7078, 70781S (2008) https://doi.org/10.1117/12.793321

KEYWORDS: X-rays, Tissues, X-ray sources, Polymers, Molybdenum, X-ray imaging, Signal attenuation, Scattering, Epoxies, Scatter measurement

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Proceedings Article | 3 April 2008 Paper

High resolution x-ray imaging of dynamic solute transport in cyclically deformed porous tissue scaffolds

Jorn Op Den Buijs, Kee-Won Lee, Steven Jorgensen, Shanfeng Wang, Michael Yaszemski, Erik Ritman

Proceedings Volume 6916, 69161A (2008) https://doi.org/10.1117/12.772057

KEYWORDS: X-rays, Image compression, X-ray imaging, Tissues, Polymers, Signal attenuation, 3D printing, Image resolution, Fabrication, Computer aided design

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Proceedings Article | 13 March 2006 Paper

Reproducibility of 3D micro-CT gray-scale and structural dimension data in longitudinal studies

Steven Jorgensen, Diane Eaker, Andrew Vercnocke, Erik Ritman

Proceedings Volume 6143, 61433H (2006) https://doi.org/10.1117/12.654436

KEYWORDS: Bone, X-rays, X-ray imaging, Computed tomography, Biopsy, 3D image processing, Scanners, Charge-coupled devices, Modulation transfer functions, Signal attenuation

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Proceedings Article | 20 April 2005 Paper

Micro gamma camera optics with high sensitivity and resolution

C. MacDonald, Noor Mail, W. Gibson, S. Jorgenson, E. Ritman

Proceedings Volume 5745, (2005) https://doi.org/10.1117/12.597193

KEYWORDS: Collimators, Sensors, Image resolution, Radio optics, Capillaries, Cameras, X-ray optics, Glasses, Signal to noise ratio, X-rays

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Proceedings Article | 26 October 2004 Paper

A polycapillary x-ray optics-based integrated micro-SPECT/CT scanner

Steven Jorgensen, Michael Chmelik, Diane Eaker, Carolyn MacDonald, Erik Ritman

Proceedings Volume 5535, (2004) https://doi.org/10.1117/12.560991

KEYWORDS: X-ray optics, X-rays, Single photon emission computed tomography, Scanners, Photons, X-ray computed tomography, Capillaries, X-ray imaging, Radio optics, Imaging systems

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Proceedings Article | 7 January 2002 Paper

Cryostatic micro-CT imaging of transient processes

Steven Jorgensen, Basil Blank, Erik Ritman

Proceedings Volume 4503, (2002) https://doi.org/10.1117/12.452837

KEYWORDS: X-rays, Nitrogen, X-ray imaging, Beryllium, Tissues, Cryogenics, Scanners, Copper, Liquids, Lung

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Proceedings Article | 22 September 1999 Paper

Micro-CT scanner with a focusing polycapillary x-ray optic

Steven Jorgensen, Denise Reyes, Carolyn MacDonald, Erik Ritman

Proceedings Volume 3772, (1999) https://doi.org/10.1117/12.363717

KEYWORDS: X-ray optics, X-rays, X-ray sources, Scanners, X-ray imaging, Capillaries, Crystals, Glasses, Charge-coupled devices, Geometrical optics

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Proceedings Article | 24 October 1997 Paper

Synchrotron-based micro-CT of in-situ biological basic functional units and their integration

Erik Ritman, Steven Jorgensen, Patricia Beighley, Paul Thomas, John Dunsmuir, J. Romero, Russell Turner, Mark Bolander

Proceedings Volume 3149, (1997) https://doi.org/10.1117/12.279356

KEYWORDS: X-rays, 3D image processing, Synchrotrons, X-ray imaging, Scanners, Tomography, Reconstruction algorithms, Spatial resolution, Heart, X-ray computed tomography

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Proceedings Article | 1 January 1991 Paper

Dynamic spatial reconstructor: a high-speed, stop-action, 3-D, digital radiographic imager of moving internal organs and blood

Steven Jorgensen, S. Whitlock, Paul Thomas, R. Roessler, Erik Ritman

Proceedings Volume 1346, (1991) https://doi.org/10.1117/12.23346

KEYWORDS: X-rays, Imaging systems, Cameras, X-ray imaging, Video, Charge-coupled devices, High speed photography, Velocimetry, Heart, 3D image reconstruction

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