Dr. Christian Wietholt Profile

Dr. Christian Wietholt

Postdoctoral Fellow

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Publications (8)

Proceedings Article | 19 March 2007 Paper

A system model for pinhole SPECT simulating edge penetration, detector, and pinhole response and non-uniform attenuation

Christian Wietholt, Ing-Tsung Hsiao, Chin-Tu Chen

Proceedings Volume 6510, 65103N (2007) https://doi.org/10.1117/12.713568

KEYWORDS: Signal attenuation, Monte Carlo methods, Sensors, Photons, Bone, Skin, Systems modeling, Single photon emission computed tomography, Radioisotopes, Lung

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Proceedings Article | 20 March 2006 Paper

A voxel-based partial volume correction in nuclear medicine

Hsuan-Ming Huang, Ing-Tsung Hsiao, Christian Wietholt, Ching-Han Hsu

Proceedings Volume 6144, 61446P (2006) https://doi.org/10.1117/12.654273

KEYWORDS: Sensors, Image segmentation, Brain, Data modeling, Nuclear medicine, Neuroimaging, Tissues, Positron emission tomography, Signal attenuation, Magnetic resonance imaging

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Proceedings Article | 3 March 2006 Paper

A novel model of the geometric and detector response for limited angular sampling pinhole SPECT

Christian Wietholt, Ing-Tsung Hsiao, Anne Clough, Chin-Tu Chen

Proceedings Volume 6142, 614253 (2006) https://doi.org/10.1117/12.653016

KEYWORDS: Point spread functions, Sensors, Reconstruction algorithms, Single photon emission computed tomography, Monte Carlo methods, Animal model studies, Image resolution, Expectation maximization algorithms, Data modeling, Detection and tracking algorithms

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Proceedings Article | 30 April 2004 Paper

Quantification of bronchial circulation perfusion in rats

Christian Wietholt, Robert Molthen, Steven Haworth, David Roerig, Christopher Dawson, Anne Clough

Proceedings Volume 5369, (2004) https://doi.org/10.1117/12.536814

KEYWORDS: Lung, Single photon emission computed tomography, Arteries, Reconstruction algorithms, Control systems, Image segmentation, Imaging systems, Expectation maximization algorithms, Medical imaging, Cameras

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Proceedings Article | 2 May 2003 Paper

SPECT imaging of pulmonary blood flow in a rat

Christian Wietholt, Robert Molthen, Roger Johnson, Christopher Dawson, Anne Clough

Proceedings Volume 5031, (2003) https://doi.org/10.1117/12.485802

KEYWORDS: Single photon emission computed tomography, Lung, Data acquisition, Blood circulation, Reconstruction algorithms, Signal to noise ratio, Cameras, Image fusion, Imaging systems, Collimators

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Proceedings Article | 24 April 2002 Paper

Estimation of pulmonary arterial volume changes in the normal and hypertensive fawn-hooded rat from 3D micro-CT data

Robert Molthen, Christian Wietholt, Steven Haworth, Christopher Dawson

Proceedings Volume 4683, (2002) https://doi.org/10.1117/12.463592

KEYWORDS: Lung, Arteries, Calibration, Hypoxia, X-ray computed tomography, X-rays, Genetics, X-ray imaging, Blood, Binary data

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Proceedings Article | 6 June 2000 Paper

Automatic detection of pulmonary nodules at spiral CT: first clinical experience with a computer-aided diagnosis system

Dag Wormanns, Martin Fiebich, Christian Wietholt, Stefan Diederich, Walter Heindel

Proceedings Volume 3979, (2000) https://doi.org/10.1117/12.387608

KEYWORDS: CAD systems, Computed tomography, Computer aided diagnosis and therapy, Detection and tracking algorithms, Feature extraction, Image segmentation, Computing systems, Chest, Algorithm development, Lung

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Proceedings Article | 21 May 1999 Paper

Automatic detection of pulmonary nodules in low-dose screening thoracic CT examinations

Martin Fiebich, Christian Wietholt, Bernhard Renger, Samuel Armato, Kenneth Hoffmann, Dag Wormanns, Stefan Diederich

Proceedings Volume 3661, (1999) https://doi.org/10.1117/12.348543

KEYWORDS: Lung, Chest, Computed tomography, Tissues, Lung cancer, Feature extraction, Image segmentation, Collimation, Visualization, Image processing

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Showing 5 of 8 publications

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