Prof. Keitaro Hitomi Profile

Prof. Keitaro Hitomi

Associate Professor at Tohoku Univ

SPIE Involvement:

Conference Program Committee | Author

Publications (17)

Proceedings Article | 4 October 2023 Presentation

Single crystal diamond x-ray image sensor with photon-charge counting ROIC

Toru Aoki, Kohei Toyoda, Koji Koyama, Seong-Woo Kim, Junichi Nishizawa, Kento Tabata, Hiroki Kase, Katsuyuki Takagi, Keitaro Hitomi

Proceedings Volume PC12696, PC1269608 (2023) https://doi.org/10.1117/12.2681853

KEYWORDS: Diamond, X-ray imaging, Readout integrated circuits, X-rays, Photon counting, Crystals, Photonic crystals, Photodetectors, Image sensors, Time correlated photon counting

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Proceedings Article | 1 September 2021 Poster + Paper

Demonstration of polarization behavior of TlBr x-ray imager with silver electrodes

Katsuyuk Takagi, Kohei Toyoda, Hiroki Kase, Toshiyuki Takagi, Kento Tabata, Tsuyoshi Terao, Hisashi Morii, Akifumi Koike, Toru Aoki, Mitsuhiro Nogami, Keitaro Hitomi

Proceedings Volume 11838, 118381E (2021) https://doi.org/10.1117/12.2596374

KEYWORDS: Sensors, Electrodes, Imaging systems, Polarization, Silver, Readout integrated circuits, X-rays, Switching, X-ray imaging, Thallium

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Proceedings Article | 20 August 2020 Poster

Improvement of energy resolutions in capacitive Frisch grid TlBr detectors with a pulse waveform analysis

Mitsuhiro Nogami, Keitaro Hitomi, Kenichi Watanabe, Toshiyuki Onodera, Norihisa Kimura, Shin Kubo, Keizo Ishii

Proceedings Volume 11494, 114941A (2020) https://doi.org/10.1117/12.2568431

KEYWORDS: Sensors, Signal detection, Compound semiconductors, Electronics, Thallium, Crystals, Crystallography, Gamma radiation

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Proceedings Article | 20 August 2020 Presentation

Long time operation in TlBr X-ray imager using bipolar-input ROIC

Katsuyuki Takagi, Toru Aoki, Keitaro Hitomi, Tsuyoshi Terao, Hiroki Kase, Akifumi Koike

Proceedings Volume 11494, 114940Y (2020) https://doi.org/10.1117/12.2570543

KEYWORDS: Readout integrated circuits, X-ray imaging, Silver, Electrodes, Imaging systems, Sensors, Thallium, Switching, Photon counting, Amplifiers

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Proceedings Article | 9 September 2019 Presentation

TlBr photon-counting imaging device (Conference Presentation)

Toru Aoki, Katsuyuki Takagi, Akifumi Koike, Keitaro Hitomi

Proceedings Volume 11114, 111140Q (2019) https://doi.org/10.1117/12.2529746

KEYWORDS: Photonic devices, Imaging devices, Electrodes, Sensors, X-rays, Gamma radiation, Photon counting, Semiconducting wafers, Thallium, Silver

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Proceedings Article | 23 March 2010 Paper

Energy-discrimination x-ray computed tomography system utilizing a scanning cadmium-telluride detector

Eiichi Sato, Ablajan Abduraxit, Toshiyuki Enomoto, Manabu Watanabe, Keitaro Hitomi, Kiyomi Takahashi, Shigehiro Sato, Akira Ogawa, Jun Onagawa

Proceedings Volume 7622, 76222Z (2010) https://doi.org/10.1117/12.843993

KEYWORDS: X-rays, Sensors, X-ray computed tomography, Gadolinium, X-ray detectors, Iodine, Computing systems, Signal detection, X-ray imaging, Cadmium

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Proceedings Article | 12 September 2009 Paper

Fabrication of TlBr strip detectors

Keitaro Hitomi, Youhei Kikuchi, Mohammad Nakhostin, Tadayoshi Shoji, Keizo Ishii

Proceedings Volume 7449, 74491D (2009) https://doi.org/10.1117/12.825794

KEYWORDS: Sensors, Electrodes, Crystals, Thallium, Semiconducting wafers, Resistance, Gamma radiation, Carbon, Single photon emission computed tomography, Positron emission tomography

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SPIE Journal Paper | 1 July 2009

Energy discriminating x-ray camera utilizing a cadmium telluride detector

Eiichi Sato, Abderyim Purkhet, Hiroshi Matsukiyo, Akihiro Osawa, Toshiyuki Enomoto, Manabu Watanabe, Jiro Nagao, Seiitiro Nomiya, Keitaro Hitomi, Etsuro Tanaka, Toshiaki Kawai, Shigehiro Sato, Akira Ogawa, Jun Onagawa

OE, Vol. 48, Issue 07, 076502, (July 2009) https://doi.org/10.1117/12.10.1117/1.3183927

KEYWORDS: X-rays, Radiography, Iodine, X-ray detectors, Photons, Cameras, Sensors, Cerium, Angiography, Cadmium

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Proceedings Article | 4 September 2008 Paper

Energy-discriminating x-ray camera utilizing a cadmium telluride detector

Eiichi Sato, Purkhet Abderyim, Hiroshi Matsukiyo, Akihiro Osawa, Toshiyuki Enomoto, Manabu Watanabe, Jiro Nagao, Seichiro Nomiya, Keitaro Hitomi, Akira Ogawa, Shigehiro Sato, Toshio Ichimaru

Proceedings Volume 7079, 70790Z (2008) https://doi.org/10.1117/12.795480

KEYWORDS: X-rays, Radiography, X-ray detectors, Iodine, Cameras, Sensors, Cerium, Cadmium, X-ray imaging, X-ray technology

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Proceedings Article | 4 September 2008 Paper

Evaluation of TlBr detectors with Tl electrodes

Keitaro Hitomi, Yohei Kikuchi, Tadayoshi Shoji, Keizo Ishii

Proceedings Volume 7079, 70790J (2008) https://doi.org/10.1117/12.794381

KEYWORDS: Sensors, Electrodes, Thallium, Gamma radiation, Spectroscopy, Amplifiers, Polarization, Crystals, Ions, Semiconducting wafers

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Proceedings Article | 4 September 2008 Paper

X-ray computed tomography system using a multipixel photon counter

Eiichi Sato, Hiroshi Matsukiyo, Akihiro Osawa, Toshiyuki Enomoto, Manabu Watanabe, Jiro Nagao, Purkhet Abderyim, Seiichiro Nomiya, Keitaro Hitomi, Akira Ogawa, Shigehiro Sato

Proceedings Volume 7079, 70790H (2008) https://doi.org/10.1117/12.795434

KEYWORDS: X-rays, Photon counting, Zinc oxide, X-ray computed tomography, Computing systems, Scintillators, Aluminum, Sensors, Amplifiers, Crystals

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Proceedings Article | 3 September 2008 Paper

Energy-discriminating K-edge x-ray computed tomography system

Manabu Watanabe, Eiichi Sato, Purkhet Abderyim, Hiroshi Matsukiyo, Akihiro Osawa, Toshiyuki Enomoto, Jiro Nagao, Seiichiro Nomiya, Keitaro Hitomi, Akira Ogawa, Shigehiro Sato, Toshio Ichimaru

Proceedings Volume 7080, 70800B (2008) https://doi.org/10.1117/12.795874

KEYWORDS: X-rays, Iodine, X-ray detectors, Sensors, Cancer, Computing systems, X-ray computed tomography, Amplifiers, Tomography, Spectroscopy

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Proceedings Article | 3 September 2008 Paper

X-ray fluorescence computed tomography system for biomedical imaging

Toshiyuki Enomoto, Eiichi Sato, Purkhet Abderyim, Hiroshi Matsukiyo, Akihiro Osawa, Manabu Watanabe, Jiro Nagao, Seiichiro Nomiya, Keitro Hitomi, Mitsuru Izumisawa, Akira Ogawa, Shigehiro Sato

Proceedings Volume 7080, 70800A (2008) https://doi.org/10.1117/12.795548

KEYWORDS: X-rays, Iodine, Cerium, Imaging systems, Computing systems, Sensors, Photons, X-ray computed tomography, X-ray fluorescence spectroscopy, X-ray detectors

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Proceedings Article | 24 September 2007 Paper

Fluorescent x-ray tomography system for atomic imaging

Eiichi Sato, Keitaro Hitomi, Seiichiro Nomiya, Etsuro Tanaka, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Mitsuru Izumisawa, Masanori Shozushima, Shigehiro Sato, Kazuyoshi Takayama

Proceedings Volume 6707, 67070S (2007) https://doi.org/10.1117/12.733458

KEYWORDS: X-rays, Iodine, Cerium, Tomography, Imaging systems, X-ray imaging, Computing systems, Optical filters, Polymethylmethacrylate, Collimators

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Proceedings Article | 24 September 2007 Paper

Evaluation of the multi-pixel photon counters with inorganic scintillators

Keitaro Hitomi, Eiichi Sato, Seiichiro Nomiya, Tadayoshi Shoji

Proceedings Volume 6706, 67061C (2007) https://doi.org/10.1117/12.731704

KEYWORDS: Scintillators, Positron emission tomography, Gamma radiation, Sensors, Avalanche photodetectors, Silicon, Scintillation, Sodium, Photon counting, Photodetectors

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Proceedings Article | 24 September 2007 Paper

Simple x-ray computed tomography system utilizing a cadmium telluride detector

Eiichi Sato, Seiichiro Nomiya, Keitaro Hitomi, Hideaki Onabe, Tadayoshi Shoji, Etsuro Tanaka, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Shigehiro Sato, Toshio Ichimaru, Kazuyoshi Takayama

Proceedings Volume 6706, 67060Y (2007) https://doi.org/10.1117/12.733420

KEYWORDS: X-rays, Sensors, X-ray detectors, Iodine, Computing systems, Polymethylmethacrylate, Angiography, X-ray computed tomography, Cadmium, X-ray imaging

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Proceedings Article | 24 September 2007 Paper

High-dose-rate pulse x-ray detection using a multipixel photon counter

Eiichi Sato, Keitaro Hitomi, Seiichiro Nomiya, Hideaki Onabe, Tadayoshi Shoji, Etsuro Tanaka, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Shigehiro Sato, Kazuyoshi Takayama

Proceedings Volume 6707, 67070X (2007) https://doi.org/10.1117/12.733437

KEYWORDS: X-rays, Samarium, Plasma, Angiography, Iodine, X-ray detectors, Photon counting, Plasma generation, X-ray sources, Scintillators

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Showing 5 of 17 publications

Conference Committee Involvement (16)

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXVI

19 August 2024 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXV

21 August 2023 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIV

22 August 2022 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII

1 August 2021 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXII

25 August 2020 | Online Only, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXI

12 August 2019 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XX

20 August 2018 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIX

7 August 2017 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVIII

29 August 2016 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVII

10 August 2015 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVI

18 August 2014 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XV

26 August 2013 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV

13 August 2012 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIII

22 August 2011 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII

2 August 2010 | San Diego, California, United States

Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XI

3 August 2009 | San Diego, California, United States

Showing 5 of 16 Conference Committees

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