Study on the effective energy measurement method required for high accuracy absorbed dose evaluation of the CT apparatus

• Project/Area Number: 16K21553
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Radiation science; Medical Physics and Radiological Technology
• Research Institution: Kawasaki University of Medical Welfare (2017); Junshin Gakuen University (2016)
• Principal Investigator: Gotanda Tatsuhiro 川崎医療福祉大学, 医療技術学部, 准教授 (60711447)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 実効エネルギー / X線CT / 線量計測用フィルム / GAFCHROMIC EBT3 / スキャナ特性 / GAFCHROMIC Film

Outline of Final Research Achievements

In order to accurately evaluate the medical exposure of the CT apparatus, it is important to measure the quality of the X-ray flux. In this study, we aim to develop a simple and high accuracy method of evaluating the effective enrgy of CT equipment at any facility.
In the first year, it was demonstrated that GAFCHROMIC EBT 3, which has the lowest energy dependence, is excellent in evaluating effective energy characteristics. In addition, a scan method for a flatbed scanner had been established.
In the final year, the effective energy of only the X-ray flux center of the CT apparatus was measured using the simple method. Next, the distribution of the effective energy over the entire X-ray flux of the CT apparatus was measured. In this study, it was demonstrated that it is possible to evaluate two-dimensional distribution of effective energy of CT apparatus using simple method.

Research Products

• [Journal Article] Evaluation of effective energy distribution of 320-multidetector CT using GAFCHROMIC EBT3 (2018)
  • Author(s): Tatsuhiro Gotanda, Toshizo Katsuda, Rumi Gotanda, Takuya Akagawa, Tadao Kuwano, Nobuyoshi Tanki, Hidetoshi Yatake, Yasuyuki Kawaji, Takashi Amano, Shinichi Arao, Atsushi Ono, Akihiko Tabuchi
  • Journal Title: International Fedration Medical and Biological Engineering Proceedings Volume: 68
  • Peer Reviewed
• [Journal Article] Influence of image resolution property on aliasing error of digital wiener spectrum (2018)
  • Author(s): Yasuyuki Kawaji, Tatsuhiro Gotanda, Tetsunori Shimono, Nobuyoshi Tanki, Toshizo Katsuda, Rumi Gotanda, Tadao Kuwano, Takuya Akagawa
  • Journal Title: International Fedration Medical and Biological Engineering Proceedings Volume: 68
  • Peer Reviewed
• [Journal Article] Temporal characterization of the flat-bed scanner influencing dosimetry using radiochromic film (2018)
  • Author(s): Rumi Gotanda, Toshizo Katsuda, Tatsuhiro Gotanda, Nobuyoshi Tanki, Hidetoshi Yatake, Yasuyuki Kawaji, Tadao Kuwano, Takuya Akagawa, Akihiko Tabuchi, Atsushi Ono, Shinichi Arao
  • Journal Title: International Fedration Medical and Biological Engineering Proceedings Volume: 68
  • Peer Reviewed
• [Journal Article] Accurately evaluating settling responses of ionization chambers used in radiation therapy depend on the accelerating tube (2018)
  • Author(s): Tetsunori Shimono, Yasuyuki Kawaji, Tatsuhiro Gotanda, Rumi Gotanda, Hiroshi Okuda
  • Journal Title: International Fedration Medical and Biological Engineering Proceedings Volume: 68
  • Peer Reviewed
• [Journal Article] Effect of Weight Input in Magnetic Resonance Imaging System on Radio-Frequency-Induced Heating of Metallic Implants (2018)
  • Author(s): Atsushi Ono, Shinichi Arao, Satoru Takata, Tatsuhiro Gotanda, Rumi Gotanda, Akihiko Tabuchi
  • Journal Title: International Fedration Medical and Biological Engineering Proceedings Volume: 68
  • Peer Reviewed
• [Journal Article] Optimal Variable Refocus Flip Angle Control Method and Echo Train Length for Suppressing Exposure to Radio Frequency (2018)
  • Author(s): Akihiko Tabuchi, Shinichi Arao, Toshizo Katsuda, Atsushi Ono, Tatsuhiro Gotanda, Rumi Gotanda
  • Journal Title: International Fedration Medical and Biological Engineering Proceedings Volume: 68
  • Peer Reviewed
• [Journal Article] Basic study of the imaging conditions on tumor volume measurement using 3D-MR imaging of the liver while patient holds breath (2018)
  • Author(s): Shinichi Arao, Akihiko Tabuchi, Yasuhiko Okura, Hajime Harauchi, Atsushi Ono, Tatsuhiro Gotanda, Rumi Gotanda, Akiko Hayashi
  • Journal Title: International Fedration Medical and Biological Engineering Proceedings Volume: 68
  • Peer Reviewed
• [Journal Article] Size and shape of spherical objects on full-field digital mammography and digital breast tomosynthesis images (2018)
  • Author(s): Hidetoshi Yatake, Yuka Sawai, Takahiro Kozuka, Yoshihiro Takeda, Mariko Kajihara, Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, Shuji Abe, Makoto Shimada, Nobuyoshi Tanki, Toshio Nishi, Hideo Inaji
  • Journal Title: International Fedration Medical and Biological Engineering Proceedings Volume: 68
  • Peer Reviewed
• [Journal Article] Determining optimum wavelength of ultraviolet rays to pre-exposure of non-uniformity error correction in Gafchromic EBT2 films (2018)
  • Author(s): Toshizo KATSUDA, Rumi GOTANDA, Tatsuhiro GOTANDA, Takuya AKAGAWA, Nobuyoshi TANKI, Tadao KUWANO, Atsushi NOGUCHI, Kouichi YABUNAKA
  • Journal Title: Polish Journal of Medical Physics and Engineering Volume: 24 Issue: 1 Pages: 11-14
  • DOI: 10.2478/pjmpe-2018-0002
  • Peer Reviewed / Open Access
• [Journal Article] Influence of scattered radiation on Gafchromic EBT3 (2017)
  • Author(s): Tatsuhiro Gotanda, Toshizo Katsuda, Ayano Kawasaki, Rumi Gotanda, Takuya Akagawa, Tadao Kuwano, Nobuyoshi Tanki, Yasuyuki Kawaji, Tetsunori Shimono, Kenyu Yamamoto, Koichi Yabunaka
  • Journal Title: International Fedration Medical and Biological Engineering Proceedings Volume: 65 Pages: 1037-1040
  • DOI: 10.1007/978-981-10-5122-7_101
  • ISBN: 9789811051210, 9789811051227
  • Peer Reviewed
• [Journal Article] Intensities of Incident and Transmitted Ultraviolet-A Rays through Gafchromic Films (2017)
  • Author(s): Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, Takuya Akagawa, Nobuyoshi Tanki, Tadao Kuwano, Atsushi Noguchi, Kouichi Yabunaka
  • Journal Title: Journal of Medical Physics Volume: 42 Issue: 2 Pages: 86-89
  • DOI: 10.4103/jmp.jmp_136_16
  • Peer Reviewed / Open Access
• [Journal Article] Ultraviolet Ray Strength for Pre-irradiation in Gafchromic EBT2 (2017)
  • Author(s): T Katsuda, R Gotanda, T Gotanda, T Akagawa, N Tanki, A Noguchi, T Kuwano, K Yabunaka
  • Journal Title: IFMBE Proceedings Volume: 65 Pages: 386-389
  • DOI: 10.1007/978-981-10-5122-7_97
  • ISBN: 9789811051210, 9789811051227
  • Peer Reviewed
• [Journal Article] UV Intensity of Pre-irradiation in Gafchromic XR-RV3 and XR-SP2 (2017)
  • Author(s): Tadao Kuwano, Yoshihiro Takeda, Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, Takuya Akagawa, Nobuyoshi Tanki, Atsushi Noguchi, Yasuyuki Kawaji, Kenyu Yamamoto, Koichi Yabunaka
  • Journal Title: International Fedration Medical and Biological Engineering Proceedings Volume: 65 Pages: 53-56
  • DOI: 10.1007/978-981-10-5122-7_14
  • ISBN: 9789811051210, 9789811051227
  • Peer Reviewed
• [Journal Article] Basic research on countermeasures against barium sulfate aggregation using a gastric phantom (2017)
  • Author(s): Kenyu Yamamoto, Naoko Fujiwara, Yoshihiro Takeda, Rena Takakura, Tetsushi Ishida, Toshizo Katsuda, Tadao Kuwano, Misao Yoneda, Tatsuhiro Gotanda, Shuji Abe, Makoto Shimada, Masami Azuma, Sachiko Tanaka
  • Journal Title: International Fedration Medical and Biological Engineering Proceedings Volume: 65 Pages: 675-678
  • DOI: 10.1007/978-981-10-5122-7_169
  • ISBN: 9789811051210, 9789811051227
  • Peer Reviewed
• [Journal Article] Effective energy measurement using Radiochromic film: Application of a mobile scanner (2016)
  • Author(s): Tatsuhiro Gotanda, Toshizo Katsuda,Rumi Gotanda, Takuya Akagawa, Nobuyoshi Tanki, Tadao Kuwano, Yasuyuki Kawaji, Tetsunori Shimono, Yoshihiro Takeda
  • Journal Title: Polish Journal of Medical Physics and Engineering Volume: 22(4) Issue: 4 Pages: 83-90
  • DOI: 10.1515/pjmpe-2016-0015
  • Peer Reviewed
• [Journal Article] Simplified method for creating a density-absorbed dose calibration curve for the low dose range from GAFCHROMIC EBT3 film (2016)
  • Author(s): Tatsuhiro Gotanda, Toshizo Katsuda,Rumi Gotanda,Tadao Kuwano, Takuya Akagawa, Nobuyoshi Tanki,Akihiko Tabuchi, Tetsunori Shimono, Yasuyuki Kawaji
  • Journal Title: Journal of Medical Physics Volume: 41 Issue: 4 Pages: 266-270
  • DOI: 10.4103/0971-6203.195192
  • Peer Reviewed / Open Access
• [Presentation] Evaluation of effective energy distribution of 320-multidetector CT using GAFCHROMIC EBT3 (2018)
  • Author(s): Tatsuhiro Gotanda, Toshizo Katsuda, Rumi Gotanda, Takuya Akagawa, Tadao Kuwano, Nobuyoshi Tanki, Hidetoshi Yatake, Yasuyuki Kawaji, Takashi Amano, Shinichi Arao, Atsushi Ono, Akihiko Tabuchi
  • Organizer: World Congress on Medical Physics & Biomedical Engineering
  • Int'l Joint Research
• [Presentation] Comparison of UV-A sensitivity exposed from front side and backside in Gafchromic XR-RV3: preliminary study (2018)
  • Author(s): Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, Takuya Akagawa, Nobuyoshi Tanki, Atsushi Noguchi, Tadao Kuwano, Shinya Imai, Kouichi Yabunaka
  • Organizer: World Congress on Medical Physics & Biomedical Engineering
  • Int'l Joint Research
• [Presentation] Temporal characterization of the flat-bed scanner influencing dosimetry using radiochromic film (2018)
  • Author(s): Rumi Gotanda, Toshizo Katsuda, Tatsuhiro Gotanda, Nobuyoshi Tanki, Hidetoshi Yatake, Yasuyuki Kawaji, Tadao Kuwano, Takuya Akagawa, Akihiko Tabuchi, Atsushi Ono, Shinichi Arao
  • Organizer: World Congress on Medical Physics & Biomedical Engineering
  • Int'l Joint Research
• [Presentation] Efficient X-ray CT dosimetry procedure using radiochromic film and film-folding type phantom (2018)
  • Author(s): Nobuyoshi Tanki, Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, Hidetoshi Yatake, Yasuyuki Kawaji, Hideki Fujita, Atsushi Noguchi, Tadao Kuwano, Shinya Imai, Takuya Akagawa, Yoshihiro Takeda
  • Organizer: World Congress on Medical Physics & Biomedical Engineering
  • Int'l Joint Research
• [Presentation] Influence of image resolution property on aliasing error of digital wiener spectrum (2018)
  • Author(s): Yasuyuki Kawaji, Tatsuhiro Gotanda, Tetsunori Shimono, Nobuyoshi Tanki, Toshizo Katsuda, Rumi Gotanda, Tadao Kuwano, Takuya Akagawa
  • Organizer: World Congress on Medical Physics & Biomedical Engineering
  • Int'l Joint Research
• [Presentation] Accurately evaluating settling responses of ionization chambers used in radiation therapy depend on the accelerating tube (2018)
  • Author(s): Tetsunori Shimono, Yasuyuki Kawaji, Tatsuhiro Gotanda, Rumi Gotanda, Hiroshi Okuda
  • Organizer: World Congress on Medical Physics & Biomedical Engineering
  • Int'l Joint Research
• [Presentation] Optimal Variable Refocus Flip Angle Control Method and Echo Train Length for Suppressing Exposure to Radio Frequency (2018)
  • Author(s): Akihiko Tabuchi, Shinichi Arao, Toshizo Katsuda, Atsushi Ono, Tatsuhiro Gotanda, Rumi Gotanda
  • Organizer: World Congress on Medical Physics & Biomedical Engineering
  • Int'l Joint Research
• [Presentation] Effect of Weight Input in Magnetic Resonance Imaging System on Radio-Frequency-Induced Heating of Metallic Implants (2018)
  • Author(s): Atsushi Ono, Shinichi Arao, Satoru Takata, Tatsuhiro Gotanda, Rumi Gotanda, Akihiko Tabuchi
  • Organizer: World Congress on Medical Physics & Biomedical Engineering
  • Int'l Joint Research
• [Presentation] Basic study of the imaging conditions on tumor volume measurement using 3D-MR imaging of the liver while patient holds breath (2018)
  • Author(s): Shinichi Arao, Akihiko Tabuchi, Yasuhiko Okura, Hajime Harauchi, Atsushi Ono, Tatsuhiro Gotanda, Rumi Gotanda, Akiko Hayashi
  • Organizer: World Congress on Medical Physics & Biomedical Engineering
  • Int'l Joint Research
• [Presentation] Size and shape of spherical objects on full-field digital mammography and digital breast tomosynthesis images (2018)
  • Author(s): Hidetoshi Yatake, Yuka Sawai, Takahiro Kozuka, Yoshihiro Takeda, Mariko Kajihara, Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, Shuji Abe, Makoto Shimada, Nobuyoshi Tanki, Toshio Nishi, Hideo Inaji
  • Organizer: World Congress on Medical Physics & Biomedical Engineering
  • Int'l Joint Research
• [Presentation] Development of ultraviolet ray irradiation device for Gafchromic XR-SP2 films (2018)
  • Author(s): Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, A Sasaki, Takuya Akagawa, Nobuyoshi Tanki, Atsushi Noguchi, Tadao Kuwano, Koichi Yabunaka
  • Organizer: European Congress of Radiology 2018
  • Int'l Joint Research
• [Presentation] Effective energy evaluation of 320-multidetector CT using Radiochromic Film (2017)
  • Author(s): Gotanda T, Katsuda T, Akagawa T, Kawaji Y, Gotanda R, Tanki N, Kuwano T, Shimono T, Tabuchi A
  • Organizer: European Congress of Radiology 2017
  • Place of Presentation: オーストリア，ウィーン
  • Year and Date: 2017-03-01
  • Int'l Joint Research
• [Presentation] Influence of scattered radiation on Gafchromic EBT3 (2017)
  • Author(s): Tatsuhiro Gotanda, Toshizo Katsuda, Ayano Kawasaki, Rumi Gotanda, Takuya Akagawa, Tadao Kuwano, Nobuyoshi Tanki, Yasuyuki Kawaji, Tetsunori Shimono, Kenyu Yamamoto, Koichi Yabunaka
  • Organizer: The joint conference of the European Medical and Biological Engineering Conference (EMBEC) and the Nordic-Baltic Conference on Biomedical Engineering (NBC)
  • Int'l Joint Research
• [Presentation] Ultraviolet Ray Strength for Pre-irradiation in Gafchromic EBT2 (2017)
  • Author(s): Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, Takuya Akagawa, Atsushi Noguchi, Nobuyoshi Tanki, Tadao Kuwano, Kouichi Yabunaka
  • Organizer: The joint conference of the European Medical and Biological Engineering Conference (EMBEC) and the Nordic-Baltic Conference on Biomedical Engineering (NBC)
  • Int'l Joint Research
• [Presentation] UV Intensity of Pre-irradiation in Gafchromic XR-RV3 and XR-SP2 (2017)
  • Author(s): Tadao Kuwano, Yoshihiro Takeda, Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, Takuya Akagawa, Nobuyoshi Tanki, Atsushi Noguchi, Yasuyuki Kawaji, Kenyu Yamamoto, Koichi Yabunaka
  • Organizer: The joint conference of the European Medical and Biological Engineering Conference (EMBEC) and the Nordic-Baltic Conference on Biomedical Engineering (NBC)
  • Int'l Joint Research
• [Presentation] Basic research on countermeasures against barium sulfate aggregation using a gastric phantom (2017)
  • Author(s): Kenyu Yamamoto, Naoko Fujiwara, Yoshihiro Takeda, Rena Takakura, Tetsushi Ishida, Toshizo Katsuda, Tadao Kuwano, Misao Yoneda, Tatsuhiro Gotanda, Shuji Abe, Makoto Shimada, Masami Azuma, Sschiko Tanaka
  • Organizer: The joint conference of the European Medical and Biological Engineering Conference (EMBEC) and the Nordic-Baltic Conference on Biomedical Engineering (NBC)
  • Int'l Joint Research
• [Presentation] Response characteristics of radiochromic film at CT radiation quality (2017)
  • Author(s): Rumi Gotanda, Hitoshi Sato, Erika Nakajima, Kumi Sano, Saki Osumi, Tatsuhiro Gotanda, Takuya Akagawa, Tadao Kuwano, Nobuyoshi Tanki, Toshizo Katsuda
  • Organizer: The joint conference of the European Medical and Biological Engineering Conference (EMBEC) and the Nordic-Baltic Conference on Biomedical Engineering (NBC)
  • Int'l Joint Research
• [Presentation] Temporal characteristic of the scanner influencing dosimetry using radiochromic film (2016)
  • Author(s): Gotanda T, Katsuda T, Gotanda R, Akagawa T, Tanki N, Kuwano T, Kawaji Y, Shimono T, Fukuda K，Mizumoto T
  • Organizer: 1st European Congress of Medical Physics
  • Place of Presentation: ギリシャ・アテネ
  • Year and Date: 2016-09-01
  • Int'l Joint Research