Dr. Yongbum Lee Profile

Dr. Yongbum Lee

at Niigata Univ

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Author

Publications (14)

Proceedings Article | 13 July 2022 Paper

Robustness of a U-net model for different image processing types in segmentation of the mammary gland region

Mika Yamamuro, Yoshiyuki Asai, Naomi Hashimoto, Nao Yasuda, Hiroto Kimura, Takahiro Yamada, Mitsutaka Nemoto, Yuichi Kimura, Hisashi Handa, Hisashi Yoshida, Koji Abe, Masahiro Tada, Hitoshi Habe, Takashi Nagaoka, Seiun Nin, Kazunari Ishii, Yongbum Lee

Proceedings Volume 12286, 122860T (2022) https://doi.org/10.1117/12.2624139

KEYWORDS: Image segmentation, Mammary gland, Breast, Image processing, Mammography, Image compression, Tissues, Systems modeling, Spatial resolution, Signal attenuation

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Proceedings Article | 15 February 2021 Poster + Presentation + Paper

How to select training data to segment mammary gland region using a deep-learning approach for reliable individualized screening mammography

Mika Yamamuro, Yoshiyuki Asai, Naomi Hashimoto, Nao Yasuda, Takahiro Yamada, Mitsutaka Nemoto, Yuichi Kimura, Hisashi Handa, Hisashi Yoshida, Koji Abe, Masahiro Tada, Hitoshi Habe, Takashi Nagaoka, Yoshiaki Ozaki, Seiun Nin, Kazunari Ishii, Yongbum Lee

Proceedings Volume 11597, 115972V (2021) https://doi.org/10.1117/12.2581424

KEYWORDS: Image segmentation, Mammary gland, Mammography, Breast, Breast cancer

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Proceedings Article | 22 May 2020 Paper

Effectiveness of high-luminance display monitors in digital mammography

Mika Yamamuro, Yoshiyuki Asai, Naomi Hashimoto, Nao Yasuda, Koji Yamada, Yoshiaki Ozaki, Kazunari Ishii, Yongbum Lee

Proceedings Volume 11513, 115131T (2020) https://doi.org/10.1117/12.2555276

KEYWORDS: LCDs, Breast, Mammography, Digital mammography, Tissues, Calibration, X-rays, Visualization, Signal attenuation, X-ray imaging

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Proceedings Article | 22 May 2020 Paper

Deep learning-based segmentation of mammary gland region in digital mammograms of scattered mammary glands and fatty breasts

Mika Yamamuro, Yoshiyuki Asai, Naomi Hashimoto, Nao Yasuda, Kenta Sakaguchi, Tatsuo Konishi, Koji Yamada, Yoshiaki Ozaki, Kazunari Ishii, Yougbum Lee

Proceedings Volume 11513, 115131V (2020) https://doi.org/10.1117/12.2562180

KEYWORDS: Mammary gland, Breast, Image segmentation, Mammography, Tissues, Radiology, Convolutional neural networks, Medical imaging, Artificial intelligence, Spatial resolution

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Proceedings Article | 13 March 2019 Paper

Computerized identification of early ischemic changes in acute stroke in noncontrast CT using deep learning

Noriyuki Takahashi, Yuki Shinohara, Toshibumi Kinoshita, Tomomi Ohmura, Keisuke Matsubara, Yongbum Lee, Hideto Toyoshima

Proceedings Volume 10950, 109503A (2019) https://doi.org/10.1117/12.2507351

KEYWORDS: Computed tomography, Ischemic stroke, X-ray computed tomography, Image classification, Databases, Computer aided diagnosis and therapy, Brain, Convolutional neural networks, Tomography, Standards development

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Proceedings Article | 3 March 2011 Paper

Radiation dose reduction in digital radiography using wavelet-based image processing methods

Haruyuki Watanabe, Du-Yih Tsai, Yongbum Lee, Eri Matsuyama, Katsuyuki Kojima

Proceedings Volume 7966, 79661T (2011) https://doi.org/10.1117/12.877740

KEYWORDS: Image processing, Wavelets, Radiography, Modulation transfer functions, Visualization, Image filtering, Image quality, Chromium, Wavelet transforms, Neodymium

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SPIE Journal Paper | 1 July 2009

Mutual information-based evaluation of image quality with its preliminary application to assessment of medical imaging systems

Eri Matsuyama, Du-Yih Tsai, Yongbum Lee

JEI, Vol. 18, Issue 03, 033011, (July 2009) https://doi.org/10.1117/12.10.1117/1.3206967

KEYWORDS: Image quality, Signal to noise ratio, Modulation transfer functions, Imaging systems, Medical imaging, Digital mammography, Radiography, Image resolution, Spatial frequencies, X-rays

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Proceedings Article | 27 March 2009 Paper

Computer-assisted scheme for automated determination of imaging planes in cervical spinal cord MRI

Masaki Tsurumaki, Du-Yih Tsai, Yongbum Lee, Masaru Sekiya, Kiyoko Kazama

Proceedings Volume 7259, 72593W (2009) https://doi.org/10.1117/12.811082

KEYWORDS: Spinal cord, Magnetic resonance imaging, Composites, Feature extraction, Spine, Image processing, Edge detection, Scanners, Health sciences, Magnetism

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Proceedings Article | 18 March 2008 Paper

Physical characterization of digital radiological images by use of transmitted information metric

Eri Matsuyama, Du-Yih Tsai, Yongbum Lee, Masaru Sekiya, Katsuyuki Kojima

Proceedings Volume 6913, 69130V (2008) https://doi.org/10.1117/12.768324

KEYWORDS: Imaging systems, Medical imaging, Modulation transfer functions, Image resolution, Image quality, X-rays, Image information entropy, Computer simulations, Sensors, Radiography

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Proceedings Article | 20 March 2006 Paper

Detectability improvement of early sign of acute stroke on brain CT images using an adaptive partial smoothing filter

Yongbum Lee, Noriyuki Takahashi, Du-Yih Tsai, Hiroshi Fujita

Proceedings Volume 6144, 61446Q (2006) https://doi.org/10.1117/12.654242

KEYWORDS: Computed tomography, Digital filtering, Image processing, Image filtering, Ischemic stroke, Composites, Neuroimaging, Brain, Arteries, Smoothing

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Proceedings Article | 15 March 2006 Paper

Automatic determination of the imaging plane in lumbar MRI

Tsurumaki Masaki, Yongbum Lee, Du-Yih Tsai, Masaru Sekiya, Kiyoko Kazama

Proceedings Volume 6144, 61443X (2006) https://doi.org/10.1117/12.652908

KEYWORDS: Magnetic resonance imaging, Spinal cord, Image processing, Image filtering, Hough transforms, Surgery, Spine, Edge detection, Scanners, Health sciences

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SPIE Journal Paper | 1 October 2004

Medical image classification using genetic-algorithm based fuzzy-logic approach

Du-Yih Tsai, Yongbum Lee, Masaru Sekiya, Masaki Ohkubo

JEI, Vol. 13, Issue 04, (October 2004) https://doi.org/10.1117/12.10.1117/1.1786607

KEYWORDS: Fuzzy logic, Computer aided diagnosis and therapy, Image classification, Mammography, Heart, Medical imaging, Composites, Databases, Diagnostics, Diagnostic tests

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Proceedings Article | 12 May 2004 Paper

Computerized classification of microcalcifications on mammograms using fuzzy logic and genetic algorithm

Yongbum Lee, Du-Yih Tsai

Proceedings Volume 5370, (2004) https://doi.org/10.1117/12.536274

KEYWORDS: Fuzzy logic, Image processing, Mammography, Image filtering, Genetic algorithms, Databases, Feature extraction, Fuzzy systems, Computer aided diagnosis and therapy, Medical imaging

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Proceedings Article | 12 May 2004 Paper

Improvement in automated detection of pulmonary nodules on helical x-ray CT images

Yongbum Lee, Du-Yih Tsai, Takeshi Hara, Hiroshi Fujita, Shigeki Itoh, Takeo Ishigaki

Proceedings Volume 5370, (2004) https://doi.org/10.1117/12.536162

KEYWORDS: Lung, Computed tomography, Spherical lenses, Computer aided diagnosis and therapy, X-ray computed tomography, Image processing, Indium nitride, X-ray imaging, X-rays, Computing systems

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Showing 5 of 14 publications

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