CONFERENCE PROCEEDINGS
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Miwa Okumura
at Toshiba Medical Systems Corp
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Author
Publications (5)
Proceedings Article | 19 March 2008 Paper
Evaluation of exposure dose reduction in multislice CT coronary angiography (MS-CTA) with prospective ECG-gated helical scan
Takamasa Ota, Masaharu Tsuyuki, Miwa Okumura, Tomonari Sano, Takeshi Kondo, Shinichi Takase
Proceedings Volume 6913, 69134S (2008) https://doi.org/10.1117/12.771099
KEYWORDS: Heart, Beam propagation method, X-rays, X-ray computed tomography, Phase shift keying, Angiography, Visualization, Image quality, Arteries, Manufacturing
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
Proceedings Article | 2 March 2006 Paper
Image quality improvement and exposure dose reduction with the combined use of X-ray modulation and Boost3D
Masahiro Kazama, Shinsuke Tsukagoshi, Miwa Okumura
Proceedings Volume 6142, 61422G (2006) https://doi.org/10.1117/12.653092
KEYWORDS: X-rays, Modulation, X-ray imaging, Absorption, Image quality, Image processing, X-ray computed tomography, Image filtering, Raster graphics, Sensors
Proceedings Article | 6 May 2004 Paper
Evaluation of dose efficiency index compared to receiver operating characteristics for assessing CT low-contrast performance
Tomokazu Ishida, Shinsuke Tsukagoshi, Kazuyuki Kondo, Kazuhisa Kainuma, Miwa Okumura, Tsukasa Sasaki
Proceedings Volume 5368, (2004) https://doi.org/10.1117/12.534519
KEYWORDS: Computed tomography, Scanners, Image analysis, Receivers, Target detection, Image quality, X-rays, Electronic filtering, Manufacturing, Visual analytics
Proceedings Article | 3 May 2002 Paper
Development of x-ray detector for multislice CT with 0.5-mm slice thickness and 0.5-second revolution
Miwa Okumura, Masaaki Tamatani, Kenji Igarashi
Proceedings Volume 4682, (2002) https://doi.org/10.1117/12.465624
KEYWORDS: Sensors, Scintillators, X-ray detectors, X-ray computed tomography, X-rays, Ceramics, Detector development, Image quality, Image segmentation, Solid state electronics
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