Mr. Naotoshi Fujita Profile

Naotoshi Fujita

at Nagoya Univ Graduate School of Medicine

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 18 March 2015 Paper

Investigation of optimal acquisition time of myocardial perfusion scintigraphy using cardiac focusing-collimator

Arisa Niwa, Shinji Abe, Naotoshi Fujita, Hidetaka Kono, Tetsuro Odagawa, Yusuke Fujita, Saki Tsuchiya, Katsuhiko Kato

Proceedings Volume 9412, 94124T (2015) https://doi.org/10.1117/12.2081703

KEYWORDS: Single photon emission computed tomography, Collimators, Data acquisition, Signal attenuation, 3D image reconstruction, Scintigraphy, Cardiology, Liver, Heart, Sensors

Read Abstract +

Proceedings Article | 6 March 2013 Paper

Reduction of patient dose in digital mammography: simulation of low-dose image using computed radiography system and flat panel detector system

Yuki Saito, Maki Sakai, Naotoshi Fujita, Yoshie Kodera

Proceedings Volume 8668, 86684K (2013) https://doi.org/10.1117/12.2008134

KEYWORDS: Modulation transfer functions, Digital imaging, Optical filters, Chromium, Image filtering, Digital filtering, Computing systems, Sensors, Digital mammography, Radiography

Read Abstract +

Proceedings Article | 17 March 2011 Paper

Evaluation of the quality of image for various breast composition and exposure conditions in digital mammography

Maki Yamada, Yuri Kato, Naotoshi Fujita, Yoshie Kodera

Proceedings Volume 7961, 79615D (2011) https://doi.org/10.1117/12.877871

KEYWORDS: Breast, Signal to noise ratio, Image quality, Modulation transfer functions, Digital mammography, X-rays, Spatial frequencies, Breast cancer, Mammography, Polymethylmethacrylate

Read Abstract +

Proceedings Article | 17 March 2011 Paper

Examination of the dental cone-beam CT equipped with flat-panel-detector (FPD)

Rieko Ito, Naotoshi Fujita, Yoshie Kodera

Proceedings Volume 7961, 79615Q (2011) https://doi.org/10.1117/12.877911

KEYWORDS: X-ray computed tomography, Modulation transfer functions, Image quality, Spatial frequencies, Computed tomography, X-rays, Image analysis, X-ray imaging, Iron, Quality measurement

Read Abstract +

Proceedings Article | 16 March 2011 Paper

Evaluation of image quality characteristics of reduction image in high resolution liquid crystal display

Yukiyoshi Kimura, Daigo Yokoyama, Naotoshi Fujita, Yoshie Kodera

Proceedings Volume 7965, 796526 (2011) https://doi.org/10.1117/12.877961

KEYWORDS: LCDs, Modulation transfer functions, Image quality, Image resolution, Mammography, Optical resolution, Spatial frequencies, Super resolution, Resolution enhancement technologies, Phase contrast

Read Abstract +

Proceedings Article | 3 March 2011 Paper

Comparison of the detection rates in reduced image by difference of interpolation method

A. Horii, C. Kataoka, D. Yokoyama, N. Fujita, N. Yasuda, A. Sugiura, Y. Kodera

Proceedings Volume 7966, 79661E (2011) https://doi.org/10.1117/12.877510

KEYWORDS: LCDs, Signal detection, Medical imaging, Diagnostics, Image quality, Sensors, Mammography, Modulation transfer functions, Image compression, Health sciences

Read Abstract +

Proceedings Article | 3 March 2011 Paper

Study of signal-to-noise ratios considered human visual characteristics

Yui Hayashi, Maki Yamada, Yukiyoshi Kimura, Naotoshi Fujita, Yoshie Kodera

Proceedings Volume 7966, 79661S (2011) https://doi.org/10.1117/12.877998

KEYWORDS: Signal to noise ratio, Signal detection, Visualization, Image quality, Modulation transfer functions, Interference (communication), Spatial frequencies, Eye models, Visual process modeling, Image visualization

Read Abstract +

Proceedings Article | 23 March 2010 Paper

Noise characteristics of the reduction image displayed on liquid crystal display in digital mammography

Daigo Yokoyama, Yukiyoshi Kimura, Yasuhiro Imanishi, Naotoshi Fujita, Yoshie Kodera

Proceedings Volume 7622, 762248 (2010) https://doi.org/10.1117/12.844093

KEYWORDS: LCDs, Digital imaging, Mammography, Digital mammography, Image segmentation, Medical imaging, Phase contrast, Spatial frequencies, Instrument modeling, Radiography

Read Abstract +

Proceedings Article | 23 March 2010 Paper

A consideration of the signal-to-noise ratio in phase contrast mammography

Yuri Kato, Naotoshi Fujita, Yoshie Kodera

Proceedings Volume 7622, 762247 (2010) https://doi.org/10.1117/12.843771

KEYWORDS: Signal to noise ratio, Curium, Modulation transfer functions, X-rays, Photons, Mammography, Spatial frequencies, Digital mammography, Computing systems, Sensors

Read Abstract +

Proceedings Article | 23 March 2010 Paper

Optimization of the exposure parameters with signal-to-noise ratios considering human visual characteristics in digital mammography

Maki Yamada, Yuri Kato, Naotoshi Fujita, Yoshie Kodera

Proceedings Volume 7622, 762244 (2010) https://doi.org/10.1117/12.843765

KEYWORDS: Signal to noise ratio, X-rays, Modulation transfer functions, Digital mammography, Interference (communication), Mammography, Image quality, Breast, Spatial frequencies, Visualization

Read Abstract +

Proceedings Article | 14 March 2009 Paper

A simple method for evaluating image quality of screen-film system using a high-performance digital camera

Naotoshi Fujita, Asumi Yamazaki, Katsuhiro Ichikawa, Yoshie Kodera

Proceedings Volume 7258, 72584Z (2009) https://doi.org/10.1117/12.811490

KEYWORDS: Modulation transfer functions, Digital cameras, Imaging systems, Image quality, LCDs, Fourier transforms, Digital imaging, Spatial frequencies, Quality systems, X-rays

Read Abstract +

Proceedings Article | 13 March 2009 Paper

Study of signal-to-noise ratio in digital mammography

Yuri Kato, Naotoshi Fujita, Yoshie Kodera

Proceedings Volume 7258, 72582Z (2009) https://doi.org/10.1117/12.811487

KEYWORDS: Curium, Signal to noise ratio, Digital mammography, X-rays, Mammography, X-ray imaging, Computing systems, Sensors, Photons, Chromium

Read Abstract +

Proceedings Article | 18 March 2008 Paper

Comparison of MTFs in x-ray CT images between measured by current method and considered linearity in low contrast

Naotoshi Fujita, Katsuhiro Ichikawa, Takanori Hara, Yoshie Kodera

Proceedings Volume 6913, 69133O (2008) https://doi.org/10.1117/12.770112

KEYWORDS: Modulation transfer functions, X-ray computed tomography, Copper, Computed tomography, X-rays, Scanners, Signal to noise ratio, X-ray imaging, Spatial resolution, Signal attenuation

Read Abstract +

Showing 5 of 13 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years