Dr. L. John Schreiner Profile

Dr. L. John Schreiner

Chief Medical Physicist at Cancer Ctr of Southeastern Ontario

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Publications (5)

Proceedings Article | 16 March 2020 Presentation + Paper

Image registration with deep probabilistic classifiers: application in radiation therapy

Alireza Sedghi, Gregory Salomons, Jean-David Jutras, Jim Gooding, John Schreiner, William Wells, Parvin Mousavi

Proceedings Volume 11315, 1131509 (2020) https://doi.org/10.1117/12.2549775

KEYWORDS: Image registration, Radiotherapy, Cancer, 3D image processing, Image processing, Convolutional neural networks, Classification systems, Machine learning

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Proceedings Article | 18 March 2015 Paper

3D-printed surface mould applicator for high-dose-rate brachytherapy

Mark Schumacher, Andras Lasso, Ian Cumming, Adam Rankin, Conrad Falkson, L. John Schreiner, Chandra Joshi, Gabor Fichtinger

Proceedings Volume 9415, 94152E (2015) https://doi.org/10.1117/12.2082543

KEYWORDS: Computed tomography, Calibration, 3D modeling, Visualization, 3D printing, Process modeling, Natural surfaces, Skin, Manufacturing, Cancer

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Proceedings Article | 19 March 2014 Paper

Assessing and improving cobalt-60 digital tomosynthesis image quality

Matthew Marsh, L. John Schreiner, Andrew Kerr

Proceedings Volume 9033, 90335V (2014) https://doi.org/10.1117/12.2043066

KEYWORDS: Imaging systems, Point spread functions, Image quality, Distortion, Deconvolution, Computed tomography, Radiotherapy, Image resolution, Contrast sensitivity, Reconstruction algorithms

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Proceedings Article | 20 April 2005 Paper

Quantitative investigations of megavoltage computed tomography

Myron Rogers, Andrew Kerr, Greg Salomons, L. John Schreiner

Proceedings Volume 5745, (2005) https://doi.org/10.1117/12.596047

KEYWORDS: Computed tomography, X-ray computed tomography, Radiotherapy, Metals, Signal attenuation, Tin, Tissues, Copper, Sensors, Imaging systems

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Proceedings Article | 20 April 2005 Paper

Metal artifact suppression in megavoltage computed tomography

L. John Schreiner, Myron Rogers, Greg Salomons, Andrew Kerr

Proceedings Volume 5745, (2005) https://doi.org/10.1117/12.596020

KEYWORDS: Computed tomography, Metals, Photons, Radiotherapy, Head, Image transmission, Tungsten, Signal attenuation, Image quality, X-ray computed tomography

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