Dr. Ilmar A. Hein Profile

Dr. Ilmar A. Hein

Imaging Scientist at Canon Medical Research USA Inc

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Author

Publications (7)

Proceedings Article | 1 April 2024 Poster + Paper

Validating a simulation tool for use with patient data for evaluation of advanced CT reconstruction

Daniel Shin, Ilmar Hein, Naruomi Akino, Kirsten Boedeker

Proceedings Volume 12925, 129252D (2024) https://doi.org/10.1117/12.3006840

KEYWORDS: Modulation transfer functions, CT reconstruction, Computed tomography, Image quality, Computer simulations, Data acquisition, Deep learning, Sensors, Medical image reconstruction

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Proceedings Article | 7 April 2023 Presentation + Paper

A study of crosstalk effect in pixelated photon counting detectors and impact to system imaging performance

Xiaohui Zhan, Shuoxing Wu, Ilmar Hein, Nikolay Markov, Ruoqiao Zhang, Brent Budden, Cameron Clarke, Yi Qiang, Zhou Yu, Richard Thompson, Hiroaki Miyazaki, Hiroaki Nakai

Proceedings Volume 12463, 124630C (2023) https://doi.org/10.1117/12.2654374

KEYWORDS: Crosstalk, Modulation transfer functions, Imaging systems, Photon counting, Spatial resolution, Design and modelling

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Proceedings Article | 3 March 2012 Paper

System optics in both backprojection and forward projection for model-based iterative reconstruction

Ilmar Hein, Alexander Zamyatin

Proceedings Volume 8313, 83133L (2012) https://doi.org/10.1117/12.911386

KEYWORDS: Reconstruction algorithms, Infrared imaging, Sensors, Model-based design, Systems modeling, Algorithm development, Optical filters, Infrared sensors, Fluctuations and noise, Image quality standards

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Proceedings Article | 28 March 2007 Paper

Clinical usefulness of automatic phase selection in coronary CT angiography (CTA)

Takamasa Ota, Ilmar Hein, Miwa Okumura, Hirofumi Anno, Kazuhiro Katada

Proceedings Volume 6510, 65102N (2007) https://doi.org/10.1117/12.707265

KEYWORDS: Heart, Visualization, Arteries, Angiography, Computed tomography, Reconstruction algorithms, Sensors, Algorithm development, Beam propagation method, Data acquisition

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Proceedings Article | 15 May 2003 Paper

Tilted helical Feldkamp cone-beam reconstruction algorithm for multislice CT

Ilmar Hein, Katsuyuki Taguchi, Issei Mori, Masahiro Kazama, Michael Silver

Proceedings Volume 5032, (2003) https://doi.org/10.1117/12.481918

KEYWORDS: Reconstruction algorithms, Head, Image quality, Fluctuations and noise, X-ray computed tomography, X-rays, Image restoration, Detector arrays, X-ray sources, Tomography

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Proceedings Article | 15 May 2003 Paper

Windmill artifact in multislice helical CT

Michael Silver, Katsuyuki Taguchi, Ilmar Hein, BeShan Chiang, Masahiro Kazama, Issei Mori

Proceedings Volume 5032, (2003) https://doi.org/10.1117/12.483585

KEYWORDS: Sensors, Reconstruction algorithms, Computed tomography, Fluctuations and noise, Signal detection, Algorithm development, Detector arrays, Medical imaging, Scanners, Image processing

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Proceedings Article | 25 April 2000 Paper

Distortion correction table compression for volume x-ray CT applications

Ilmar Hein, Michael Silver, Satoru Oishi

Proceedings Volume 3977, (2000) https://doi.org/10.1117/12.384541

KEYWORDS: Distortion, X-rays, Medical imaging, 3D metrology, Image processing, X-ray computed tomography, Medical research, Data acquisition, Floods, Accuracy assessment

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Showing 5 of 7 publications

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