Development of wearable dosimeter for measuring X-ray doses in diagnostic region

• Project/Area Number: 15K19205
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Medical Physics and Radiological Technology
• Research Institution: The University of Tokushima
• Principal Investigator: HAYASHI Hiroaki 徳島大学, 大学院医歯薬学研究部(医学系), 助教 (30422794)
• Research Collaborator: OKAZAKI Tohru ; YAMADA Kenji ; TADA Keiji
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2017: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
• Keywords: OSL線量計 / 医療被曝 / 放射線計測 / 介助者被ばく / CT / エネルギー依存性 / 実臨床データ / 被ばく線量 / 小児撮影 / 医療被ばく / CT検査 / 単純X線撮影 / 小児検査 / 個人被ばく線量計 / 診断領域のX線 / 医療被曝評価

Outline of Final Research Achievements

In this study, our aim was to analyze basic characteristics of an OSL dosimeter as a radiation detector and to measure exposure dose during clinical X-ray examinations. The detector, characterized as a personal dosimeter, for use in the management of radiation exposure to medical staff has been developed and some companies provide them as an exposure dose monitoring service. However, a dosimeter which can be applied to measure exposure dose to patients has not been developed. We focused our attention on the development of an OSL dosimeter which does not include additional metal filters. Then we evaluated basic characteristics such as angular and energy dependence. After that, we measured exposure dose to staff during pediatric plain X-ray examination and patients who are undergoing pediatric CT examination.

Research Products

• [Journal Article] Direct Dose Measurement of Patients during Pediatric Computed Tomography Examination (2018)
  • Author(s): Hiroaki Hayashi, Emi Tomita, Sota Goto, Natsumi Kimoto, Keiji Tada, Ryosuke Kasai, Yuki Kanazawa, Yoshiki Mihara, Takashi Asahara, Tohru Okazaki, Takuya Hashizume and Vergil LE Cruz
  • Journal Title: Progress on Nuclear Science and Technology Volume: -
  • Peer Reviewed
• [Journal Article] Energy and Angular Dependence of the Small-Type OSL Dosimeter in Nuclear Medicine Regions using Monte Carlo Simulation (2018)
  • Author(s): Vergil Lorenzo E. Cruz, Tohru Okazaki, Hiroaki Hayashi, Yoshiki Mihara, Takashi Asahara, Natsumi Kimoto, Hiroki Okino, Yuki Kanazawa, Takuya Hashizume, Ikuo Kobayashi
  • Journal Title: Progress on Nuclear Science and Technology Volume: -
  • Peer Reviewed
• [Journal Article] Entrance surface dose measurements using a small OSL dosimeter with a computed tomography scanner having 320 rows of detectors (2017)
  • Author(s): Kazuki Takegami, Hiroaki Hayashi, Kenji Yamada, Yoshiki Mihara, Natsumi Kimoto, Yuki Kanazawa, Kousaku Higashino, Kazuta Yamashita, Fumio Hayashi, Tohru Okazaki, Takuya Hashizume and Ikuo Kobayashi
  • Journal Title: Radiological Physics and Technology Volume: 10 Issue: 1 Pages: 49-59
  • DOI: 10.1007/s12194-016-0366-1
  • NAID: 120006345646
  • Peer Reviewed
• [Journal Article] Necessity of Direct Dose Measurement during Current X-ray Diagnosis, --- Our Approach Using a Small-type OSL Dosimeter --- (2017)
  • Author(s): Hiroaki Hayashi, Yoshiki Mihara, Yuki Kanazawa, Emi Tomita, Sota Goto, Kazuki Takegami, Tohru Okazaki, Takuya Hashizume and Vergil Estacio Lorenzo Cruz
  • Journal Title: Medical Research Archives Volume: 5 Pages: 1-20
  • Peer Reviewed / Open Access
• [Journal Article] Uncertainty evaluation of absorbed dose measurements by means of small-type OSL dosimeter for radiotherapeutic X-ray region (2016)
  • Author(s): Masahide Tominaga, Hiroaki Hayashi, Akinori Matsumoto, Natsumi Kimoto, Okazaki Tohru, Hashizume Takuya and Kobayashi Ikuo
  • Journal Title: Medical Imaging and Information Sciences Volume: 33 Pages: 32-37
  • NAID: 130005160799
  • Peer Reviewed
• [Journal Article] Estimation of identification limit for a small-type OSL dosimeter on the medical images by measurement of X-ray spectra, (2016)
  • Author(s): Kazuki Takegami, Hiroaki Hayashi, Hiroki Okino, Natsumi Kimoto, Itsumi Maehata, Yuki Kanazawa, Tohru Okazaki, Takuya Hashizume and Ikuo Kobayashi
  • Journal Title: Radiological Physics and Technology Volume: 9 Issue: 2 Pages: 282-292
  • DOI: 10.1007/s12194-016-0362-5
  • NAID: 120006345647
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Basic characteristics of nanoDot OSL dosimeter for diagnostic X-ray (2016)
  • Author(s): Tohru Okazaki, Hiroaki Hayashi, Kazuki Takegami, Hiroki Okino, Natsumi Kimoto, Itsumi Maehata and Ikuo Kobayashi
  • Journal Title: Journal of Radiation Protection and Research Volume: 41 Issue: 3 Pages: 221-226
  • DOI: 10.14407/jrpr.2016.41.3.229
  • Peer Reviewed
• [Journal Article] Energy dependence measurement of small-type optically stimulated luminescence (OSL) dosimeter by means of characteristic X-rays induced with general diagnostic X-ray equipment (2016)
  • Author(s): Kazuki Takegami, Hiroaki Hayashi, Hiroki Okino, Natsumi Kimoto, Itsumi Maehata, Yuki Kanazawa, Tohru Okazaki, Takuya Hashizume and Ikuo Kobayashi
  • Journal Title: Radiological Physics and Technology Volume: 9 Issue: 1 Pages: 99-108
  • DOI: 10.1007/s12194-015-0339-9
  • Peer Reviewed
• [Journal Article] Compact irradiation system for evaluation of basic characteristics of the nanoDot OSL dosimeter toward direct measurement of exposure dose of patients (2016)
  • Author(s): Hiroki Okino, Hiroaki Hayashi, Kazuki Takegami, Natsumi Kimoto, Itsumi Maehata, Yuki Kanazawa, Tohru Okazaki, Takuya Hashizume and Ikuo Kobayashi
  • Journal Title: European Congress of Radiology (EPOS) Volume: -
  • DOI: 10.1594/ECR2016/C-0024
• [Journal Article] Proposal of quantitative identification method of a small-type OSL dosimeter: Verification that the dosimeter is not detected in the medical image (2016)
  • Author(s): Kazuki Takegami, Hiroaki Hayashi, Hiroki Okino, Natsumi Kimoto, Itsumi Maehata, Yuki Kanazawa, Tohru Okazaki, Takuya Hashizume and Ikuo Kobayashi
  • Journal Title: European Congress of Radiology (EPOS) Volume: -
  • DOI: 10.1594/ECR2016/C-0010
• [Journal Article] Evaluation of energy dependence of nanoDot optically stimulated luminescence (OSL) dosimeter using characteristic X-ray induced by medical X-ray equipment (2016)
  • Author(s): Tohru Okazaki, Takuya Hashizume, Hiroaki Hayashi, Kazuki Takegami, Hiroki Okino, Natsumi Kimoto, Itsumi Maehata, Yuki Kanazawa and Kobayashi Ikuo
  • Journal Title: European Congress of Radiology (EPOS) Volume: -
  • DOI: 10.1594/ECR2016/C-0338
• [Journal Article] Practical calibration curve of small-type optically stimulated luminescence (OSL) dosimeter for evaluation of entrance-skin dose in the diagnostic X-ray region (2015)
  • Author(s): Kazuki Takegami, Hiroaki Hayashi, Hiroki Okino, Natsumi Kimoto, Itsumi Maehata, Yuki Kanazawa, Tohru Okazaki and Ikuo Kobayashi
  • Journal Title: Radiological Physics and Technology Volume: 8 Issue: 2 Pages: 286-294
  • DOI: 10.1007/s12194-015-0318-1
  • Peer Reviewed
• [Journal Article] Procedure to measure angular dependences of personal dosimeters by means of diagnostic X-ray equipment (2015)
  • Author(s): Hiroaki Hayashi, Kazuki Takegami, Hiroki Okino, Kohei Nakagawa, Tohru Okazaki and Ikuo Kobayashi
  • Journal Title: Medical Imaging and Information Sciences Volume: 32
  • NAID: 130005062292
  • Peer Reviewed
• [Presentation] Preliminary study for eye lens dose evaluation of the medical staff during interventional fluoroscopy using Optically Stimulated Luminescence dosimeters (2018)
  • Author(s): Tohru Okazaki, Hiroaki Hayashi, Takashi Asahara, Sota Goto, Yoshiki Mihara, Emi Tomita, Yuki Kanazawa, Natsumi Kimoto, Takuya Hashizume, Vergil L E Cruz, Cheng Wei Hsin, Sumi Yokoyama, Ikuo Kobayashi
  • Organizer: 51st Annual meeting of Taiwan Society of Radiation Technology
  • Int'l Joint Research
• [Presentation] Phantom study using an OSL dosimeter with the aim of accurate measurement of eye lens dose exposure of operator during transfemoral cardiac catheterization using fluoroscopic examination (2018)
  • Author(s): Takashi Asahara, Hiroaki Hayashi, Emi Tomita, Sota Goto, Natsumi Kimoto, Kenji Yamada, Sumi Yokoyama, Yuki Kanazawa, Tohru Okazaki
  • Organizer: uropean Congress of Radiology
  • Int'l Joint Research
• [Presentation] Preliminary study for exposure dose measurement of people assisting during a pediatric X-ray procedure by means of a small-type OSL dosimeter (2017)
  • Author(s): Hiroaki Hayashi, Yoshiki Mihara, Natsumi Kimoto, Takashi Asahara, Kenji Yamada, Yuki Kanazawa, Masafumi Harada, Tohru Okazaki and Takuya Hashizume
  • Organizer: European Congress of Radiology
  • Place of Presentation: Vienna(Austria)
  • Year and Date: 2017-03-01
  • Int'l Joint Research
• [Presentation] Basic study for internal dose evaluation during CT examination by means of small-type OSL dosimeter (2017)
  • Author(s): Yoshiki Mihara, Hiroaki Hayashi, Kenji Yamada, Yuki Kanazawa, Kousaku Higashino, Kazuta Yamashita, Ryosuke Kasai, Tohru Okazaki and Takuya Hashizume
  • Organizer: European Congress of Radiology
  • Place of Presentation: Vienna(Austria)
  • Year and Date: 2017-03-01
  • Int'l Joint Research
• [Presentation] Universal calibration curve for a small-type OSL dosimeter to be used for direct dose measurements of direct, scattered and penetrating X-rays in the diagnostic region (2017)
  • Author(s): Kazuki Takegami, Hiroaki Hayashi, Natumi Kimoto, Yoshiki Mihara, Yuki Kanazawa, Kousaku Higashino, Kazuta Yamashita, Fumio Hayashi, Tohru Okazaki, Takuya Hashizume and Ikuo Kobayashi
  • Organizer: Radiological Society of North America (RSNA)
  • Int'l Joint Research / Invited
• [Presentation] Energy dependence of nanoDot OSL dosimeters to low energy X-rays using Monte-Carlo simulation code EGS5 (2017)
  • Author(s): Cruz LE Vergil, GOTO Sota, OKAZAKI Tohru, Hiroaki Hayashi, TOMITA Emi, MIHARA Yoshiki, ASAHARA Takashi, HASHIZUME Takuya, Cheng Wei Hsin and KOBAYASHI Ikuo
  • Organizer: AOCMP-AMPICON 2017
  • Int'l Joint Research
• [Presentation] Practical phantom study using small-type OSL dosimeter toward direct dose measurement during pediatric CT examination (2017)
  • Author(s): OKAZAKI Tohru, Hiroaki Hayashi, TOMITA Emi, GOTO Sota, TADA Keiji, MIHARA Yoshiki, KIMOTO Natsumi, KASAI Ryosuke, Yuki Kanazawa, CRUZ LE Vergil, HASHIZUME Takuya, Hsin Wei Cheng and KOBAYASHI Ikuo
  • Organizer: AOCMP-AMPICON 2017
  • Int'l Joint Research
• [Presentation] Evaluating the Influence of the Small-type Optically Stimulated Luminescence (OSL) Dosimeter on CT Images for Radiation Dose Measurement of Patient (2017)
  • Author(s): Hsin Wei Cheng, OKAZAKI Tohru, HASHIZUME Takuya, Hiroaki Hayashi, TOMITA Emi, TADA Keiji and Yuki Kanazawa
  • Organizer: The 3rd International Conference on Radiological Science and Technology
  • Int'l Joint Research
• [Presentation] Precise calibration factor of small-type OSL dosimeter with the aim toward analysis of exposure doses caused by scattering X-ray in the diagnostic region (2017)
  • Author(s): MIHARA Yoshiki, Hiroaki Hayashi, ASAHARA Takashi, GOTO Sota, KIMOTO Natsumi, Yuki Kanazawa and OKAZAKI Tohru
  • Organizer: The 3rd International Conference on Radiological Science and Technology
  • Int'l Joint Research
• [Presentation] Energy and Angular Dependence of the small type OSL Dosimeter in Diagnostic and Nuclear Medicine Regions using Monte Carlo Simulation (2017)
  • Author(s): Cruz Lorenzo E. Vergil, OKAZAKI Tohru, Hiroaki Hayashi, MIHARA Yoshiki, ASAHARA Takashi, KIMOTO Natsumi, OKINO Hiroki, Yuki Kanazawa, HASHIZUME Takuya and KOBAYASHI Ikuo
  • Organizer: International Symposium On Radiation Safety and Detection Technology (ISORD-9)
  • Int'l Joint Research
• [Presentation] Applicability of Practical Calibration of a Small-type OSL Dosimeter For Measuring the Exposure Doses Effected by Scattered and Penetrating X-rays (2017)
  • Author(s): OKAZAKI Tohru, Hiroaki Hayashi, MIHARA Yoshiki, ASAHARA Takashi, KIMOTO Natsumi, Yuki Kanazawa, Kousaku Higashino, YAMASHITA Kazuta, YOKOYAMA Sumi, TAKEGAMI Kazuki, HASHIZUME Takuya and CRUZ LE Vergil
  • Organizer: International Symposium On Radiation Safety and Detection Technology (ISORD-9)
  • Int'l Joint Research
• [Presentation] Direct Dose Measurement of Patients during Pediatric Computed Tomography Examination (2017)
  • Author(s): Hiroaki Hayashi, TOMITA Emi, GOTO Sota, KIMOTO Natsumi, TADA Keiji, KASAI Ryosuke, Yuki Kanazawa, MIHARA Yoshiki, ASAHARA Takashi, OKAZAKI Tohru, HASHIZUME Takuya and CRUZ LE Vergil
  • Organizer: International Symposium On Radiation Safety and Detection Technology (ISORD-9)
  • Int'l Joint Research
• [Presentation] 小児CT撮影における被ばく線量の実測と装置表示値との比較 (2017)
  • Author(s): 景山 紗貴，多田 佳司，岡 春奈，安田 謙二，林 裕晃，三原 由樹，冨田 恵美，後藤聡汰，岡崎 徹
  • Organizer: 第13回中四国放射線医療技術フォーラム
• [Presentation] 320-row volumetric scanにおける小児CT検査の被ばく線量解析に向けた基礎検討 (2017)
  • Author(s): 多田佳司, 岡春奈, 景山紗貴, 林 裕晃, 三原由樹, 岡崎徹, 市川勝弘, 冨田恵美, 後藤聡汰, 安田謙二
  • Organizer: 第45回日本放射線技術学会秋季学術大会
• [Presentation] 小型OSL線量計を用いた新生児胸部CT検査における散乱X線による水晶体および生殖腺の被ばくの実測 (2017)
  • Author(s): 岡春奈, 多田佳司, 景山紗貴, 安田謙二, 林 裕晃, 岡崎徹, 冨田恵美, 後藤聡汰
  • Organizer: 第45回日本放射線技術学会秋季学術大会
• [Presentation] 小型OSL線量計を用いた超精密測定に向けた固有効率の決定 (2017)
  • Author(s): 後藤 聡汰, 林 裕晃, 三原 由樹, 淺原 孝, 冨田 恵美, 金澤 裕樹, 岡崎 徹, 橋詰 拓弥, Vergil LE Cruz
  • Organizer: 第45回日本放射線技術学会秋季学術大会
• [Presentation] Visualization of entrance surface dose during CT examination using small-type OSL dosimeter (2017)
  • Author(s): Mihara Yoshiki, Hiroaki Hayashi, Yuki Kanazawa, Yamada Kenji, Takegami Kazuki, Okazaki Tohru and Hashizume Takuya
  • Organizer: 第73回日本放射線技術学会総会学術大会
• [Presentation] Reliability of the dose calibration of small-type Optically Stimulated Luminescence dosimeter for diagnostic X-rays (2017)
  • Author(s): Tohru Okazaki, Hiroaki Hayashi, Mihara Yoshiki, Tomita Emi, Goto Sota, Kimoto Natsumi, Takegami Kazuki, Takuya Hashizume, hsin Wei Cheng, Cruz Lorenzo Estacio Vergil and Kobayashi Ikuo
  • Organizer: The 50th Annual Meeting of TWSRT and the International Conference of Medical Imaging
  • Place of Presentation: Hsinchu(Taiwan)
  • Int'l Joint Research
• [Presentation] 小型光刺激發光劑量計測量診斷範圍之輻射劑量的可能性評估 (2017)
  • Author(s): hsin Wei Cheng, Hiroaki Hayashi, Takegami Kazuki, Mihara Yoshiki, Kimoto Natsumi, Yuki Kanazawa, Tohru Okazaki, Takuya Hashizume, Ikuo Kobayashi
  • Organizer: The 50th Annual Meeting of TWSRT and the International Conference of Medical Imaging
  • Place of Presentation: Hsinchu(Taiwan)
  • Int'l Joint Research
• [Presentation] Uncertainty estimation of dose measured with a small-type optically stimulated luminescence dosimeter for CT scanning, --- Basic study for estimating entrance skin dose and internal organ dose --- (2016)
  • Author(s): Hiroaki Hayashi, Tohru Okazaki, Yoshiki Mihara, Kenji Yamada, Natsumi Kimoto, Kazuki Takegami, Yuki Kanazawa, Kousaku Higashino, Kazuta Yamashita, Takuya Hashizume, Ikuo Kobayashi and Mary A. Kaila Ann Reginaldo
  • Organizer: 22nd International Conference on Medical Physics ICMP
  • Place of Presentation: Bangkok(Thailand)
  • Year and Date: 2016-12-09
  • Int'l Joint Research
• [Presentation] Calculation of energy and angular dependences of the small-type OSL dosimeter in the diagnostic and nuclear medicine regions using the Monte-Carlo simulation code (2016)
  • Author(s): Tohru Okazaki, Hiroaki Hayashi, Hiroki Okino, Yoshiki Mihara, Takashi Asahara, Natsumi Kimoto, Yuki Kanazawa, Kazuki Takegami, Takuya Hashizume, Ikuo Kobayashi and Reginaldo A. Kaila Ann Mary
  • Organizer: 22nd International Conference on Medical Physics ICMP
  • Place of Presentation: Bangkok(Thailand)
  • Year and Date: 2016-12-09
  • Int'l Joint Research
• [Presentation] Universal dose calibration of the small-type OSL dosimeter for diagnostic X-rays - direct, scattered and penetrating X-rays - (2016)
  • Author(s): Tohru Okazaki, Hiroaki Hayashi, Yoshiki Mihara, Natsumi Kimoto, Yuki Kanazawa, Kousaku Higashino, Kazuta Yamashita, Kazuki Takegami, Takuya Hashizume, Ikuo Kobayashi and Reginaldo A. Kaila Ann Mary
  • Organizer: 22nd International Conference on Medical Physics ICMP
  • Place of Presentation: Bangkok(Thailand)
  • Year and Date: 2016-12-09
  • Int'l Joint Research
• [Presentation] Universal calibration curve for a small-type OSL dosimeter to be used for direct dose measurements of direct, scattered and penetrating X-rays in the diagnostic region (2016)
  • Author(s): Kazuki Takegami, Hiroaki Hayashi, Natumi Kimoto, Yoshiki Mihara, Yuki Kanazawa, Kousaku Higashino, Kazuta Yamashita, Fumio Hayashi, Tohru Okazaki, Takuya Hashizume and Ikuo Kobayashi
  • Organizer: Radiological Society of North America (RSNA)
  • Place of Presentation: Chicago(U.S.A.)
  • Year and Date: 2016-11-27
  • Int'l Joint Research
• [Presentation] Convenient measurement method using small-type OSL dosimeters for evaluation of doses in CT scans: uncertainty evaluation, entrance-skin dose of phantom, and organ dose of cadaver (2016)
  • Author(s): Hiroaki Hayashi, Kazuki Takegami, Kenji Yamada, Yoshiki Mihara, Natsumi Kimoto, Yuki Kanazawa, Kousaku Higashino, Yamashita Kazuta, Fumio Hayashi, Yoshihiro Fukui, Koichi Sairyo, Tohru Okazaki, Takuya Hashizume and Ikuo Kobayashi
  • Organizer: Radiological Society of North America
  • Place of Presentation: Chicago(U.S.A.)
  • Year and Date: 2016-11-27
  • Int'l Joint Research
• [Presentation] Small size OSL dosimeter to measure patient exposure dose in X-ray diagnosis - Evaluation of invisibility - (2016)
  • Author(s): Tohru Okazaki, Hiroaki Hayashi, Kazuki Takegami, Yoshiki Mihara, Natsumi Kimoto, Yuki Kanazawa, Takuya Hashizume and Ikuo Kobayashi
  • Organizer: 14th international congress of the international radiation protection association
  • Place of Presentation: Cape Town(South African Republic)
  • Year and Date: 2016-05-09
  • Int'l Joint Research
• [Presentation] Small size OSL dosimeter to measure patient exposure dose in X-ray diagnosis - Evaluation of invisibility - (2016)
  • Author(s): Okazaki Tohru, Hiroaki Hayashi, Takegami Kazuki, Okino Hiroki, Kimoto Natsumi, Maehata Itsumi, Yuki Kanazawa, Hashizume Takuya and Kobayashi Ikuo
  • Organizer: 14th international congress of the international radiation protection association
  • Place of Presentation: Cape town (S.A.)
  • Year and Date: 2016-05-09
  • Int'l Joint Research
• [Presentation] Phantom Study for Entrance-Skin Doses Measurement in the Diagnostic X-ray Region using a Small-type OSL dosimeter Comparison of the doses measured with other detectors- (2016)
  • Author(s): Kazuki Takegami, Hiroki Okino, Natsumi Kimoto, Hiroaki Hayashi, Yuki Kanazawa, Tohru Okazaki and Takuya Hashizume
  • Organizer: 第72回日本放射線技術学会学術大会
  • Place of Presentation: パシフィコ横浜(神奈川県横浜市)
  • Year and Date: 2016-04-14
• [Presentation] EGS5を用いた核医学検査領域における小型OSL線量計の検出効率の評価 (2016)
  • Author(s): 沖野 啓樹, 竹上 和希, 紀本 夏実, 林 裕晃, 金澤 裕樹, 岡崎 徹, 橋詰 拓弥
  • Organizer: 第72回日本放射線技術学会学術大会
  • Place of Presentation: パシフィコ横浜(神奈川県横浜市)
  • Year and Date: 2016-04-14
• [Presentation] Practical calibration curve for entrance-skin dose measurement using small-type OSL dosimeter (2016)
  • Author(s): Kazuki Takegami, Hiroki Okino, Natsumi Kimoto, Hiroaki Hayashi, Yuki Kanazawa, Tohru Okazaki and Ikuo Kobayashi
  • Organizer: 第72回日本放射線技術学会学術大会
  • Place of Presentation: パシフィコ横浜(神奈川県横浜市)
  • Year and Date: 2016-04-14
• [Presentation] Proposal of quantitative identification method of a small-type OSL dosimeter: Verification that the dosimeter is not detected in the medical image (2016)
  • Author(s): Kazuki Takegami, Hiroaki Hayashi, Hiroki Okino, Natsumi Kimoto, Itsumi Maehata, Yuki Kanazawa, Tohru Okazaki, Takuya Hashizume and Ikuo Kobayashi
  • Organizer: European Congress of Radiology
  • Place of Presentation: Vienna(Austria)
  • Year and Date: 2016-03-02
  • Int'l Joint Research
• [Presentation] Evaluation of energy dependence of nanoDot optically stimulated luminescence (OSL) dosimeter using characteristic X-ray induced by medical X-ray equipment (2016)
  • Author(s): Tohru Okazaki, Takuya Hashizume, Hiroaki Hayashi, Kazuki Takegami, Hiroki Okino, Natsumi Kimoto, Itsumi Maehata, Yuki Kanazawa and Kobayashi Ikuo
  • Organizer: European Congress of Radiology (Voice of EPOS)
  • Place of Presentation: Vienna(Austria)
  • Year and Date: 2016-03-02
  • Int'l Joint Research
• [Presentation] nanoDot OSL線量計の診断用X線領域におけるエネルギー依存性 (2015)
  • Author(s): 岡崎 徹, 橋詰 拓弥, 林 裕晃, 竹上 和希, 沖野 啓樹, 紀本 夏実, 前畑 伊採, 金澤 裕樹, 小林 育夫
  • Organizer: 日本放射線安全管理学会第14回学術大会
  • Place of Presentation: 筑波大学(茨城県つくば市)
  • Year and Date: 2015-12-02
• [Presentation] OSL線量計の診断領域X線に対する基礎実験 (2015)
  • Author(s): 橋詰 拓弥, 岡崎 徹, 竹上 和希, 林 裕晃, 沖野 啓樹, 紀本 夏実, 前畑 伊採, 金澤 裕樹, 小林 育夫
  • Organizer: 日本放射線安全管理学会第14回学術大会
  • Place of Presentation: 筑波大学(茨城県つくば市)
  • Year and Date: 2015-12-02
• [Presentation] Precise measurement of the angular and energy dependences of small-type OSL dosimeter in the diagnostic energy region (2015)
  • Author(s): Hiroaki Hayashi, Kazuki Takegami, Hiroki Okino, Natsumi Kimoto, Itsumi Maehata, Yuki Kanazawa, Tohru Okazaki and Ikuo Kobayashi
  • Organizer: RSNA2015, Education Exhibits
  • Place of Presentation: Chicago(U.S.A.)
  • Year and Date: 2015-11-29
  • Int'l Joint Research
• [Presentation] OSL線量計を用いたERCPの患者被曝線量の検討 (2015)
  • Author(s): 小郷 匠平, 松田 英治, 林 裕晃, 森分 良, 松本 博樹, 佐伯 悠介, 柳元 真一
  • Organizer: 第11回中四国放射線医療技術フォーラム
  • Place of Presentation: サンポートホール高松(香川県高松市)
  • Year and Date: 2015-11-07
• [Presentation] Basic research for clinical application of the OSL dosimeter in the diagnostic region -Estimation of irradiation conditions not to identify the dosimeter on the medical image- (2015)
  • Author(s): 竹上 和希, 沖野 啓樹, 紀本 夏実, 前畑 伊採, 林 裕晃, 金澤裕樹, 岡崎 徹, 橋詰 拓弥 and 小林 育夫
  • Organizer: 第43回日本放射線技術学会秋季学術大会
  • Place of Presentation: 金沢市文化ホール(石川県金沢市)
  • Year and Date: 2015-10-08
• [Presentation] Measurement of energy dependence for small type OSL dosimeter by means of diagnostic X-ray equipment (2015)
  • Author(s): 竹上 和希, 沖野 啓樹, 紀本 夏実, 前畑 伊採, 林 裕晃, 金澤裕樹, 岡崎 徹, 橋詰 拓弥 and 小林 育夫
  • Organizer: 第43回日本放射線技術学会秋季学術大会
  • Place of Presentation: 金沢市文化ホール(石川県金沢市)
  • Year and Date: 2015-10-08
• [Presentation] Basic study for calculation of exposure dose of small type OSL dosimeter for high energy photon beam by means of simulation code(EGS5) (2015)
  • Author(s): 沖野 啓樹, 竹上 和希, 紀本 夏実, 前畑 伊採, 林 裕晃, 金澤裕樹, 岡崎 徹, 橋詰 拓弥 and 小林 育夫
  • Organizer: 第43回日本放射線技術学会秋季学術大会
  • Place of Presentation: 金沢市文化ホール(石川県金沢市)
  • Year and Date: 2015-10-08
• [Presentation] 100-2000keVの光子線に対する小型OSL線量計の効率的な照射体系の提案 (2015)
  • Author(s): 沖野 啓樹, 竹上 和希, 紀本 夏実, 前畑 伊採, 林 裕晃, 金澤 裕樹, 岡崎 徹, 橋詰 拓弥, 小林 育夫
  • Organizer: 第22回EGS研究会
  • Place of Presentation: KEK(茨城県つくば市)
  • Year and Date: 2015-08-02
• [Presentation] Basic characteristics of nanoDot OSL dosimeter for diagnostic X-ray (2015)
  • Author(s): Tohru Okazaki, Hiroaki Hayashi, Hiroki Okino, Kohei Nakagawa, Kazuki Takegami and Ikuo Kobayashi
  • Organizer: 8th International Symposium on Radiation Safety and Detection Technology (ISORD-8)
  • Place of Presentation: Jeju, Korea
  • Year and Date: 2015-07-14
  • Int'l Joint Research
• [Presentation] nanoDot OSL線量計の診断用X線に対する基礎特性 (2015)
  • Author(s): 岡崎 徹, 林 裕晃, 竹上 和希, 沖野 啓樹, 紀本 夏実, 前畑 伊採, 小林 育夫
  • Organizer: 日本保健物理学会第48回研究発表会
  • Place of Presentation: 首都大学東京(東京都荒川区)
  • Year and Date: 2015-07-02
• [Presentation] Angular dependence of nanoDot (OSL) dosimeter in diagnosis domain (2015)
  • Author(s): Hiroki Okino, Kohei Nakagawa, Kazuki Takegami, Hiroaki Hayashi, Tohru Okazaki and Ikuo Kobayashi
  • Organizer: 日本放射線技術学会 第71回総会学術大会
  • Place of Presentation: パシフィコ横浜(神奈川県横浜市)
  • Year and Date: 2015-04-16
• [Remarks] 研究グループのHP：金沢大学歯薬保健研究域保健学系
  • URL: http://hayashi.w3.kanazawa-u.ac.jp/
• [Remarks] 徳島大学医学部保健学科医用理工学講座の研究内容紹介
  • URL: http://www.tokushima-u.ac.jp/med/culture/iyo_rikogaku/