Papers - FUJII Keisuke

Development and validation of the effective CNR analysis method for evaluating the contrast resolution of CT images.

Igarashi K, Imai K, Matsushima S, Yamauchi-Kawaura C, Fujii K

Physical and engineering sciences in medicine     2024.3

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DOI： 10.1007/s13246-024-01400-5

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ノイズの準理論式に基づいたCT画像のノイズ成分解析

藤井 啓輔, 今井 國治, 野村 恵一, 村松 禎久, 遠地志太

電子情報通信学会技術研究報告   Vol. 124 ( 103 ) page： 7 - 12   2023.7

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Authorship：Lead author   Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)  

Evaluation of Apparent Noise on CT Images Using Moving Average Filters

Fujii, K; Nomura, K; Imai, K; Muramatsu, Y; Tsushima, S; Ota, H

JOURNAL OF DIGITAL IMAGING   Vol. 35 ( 1 ) page： 77 - 85   2022.2

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DOI： 10.1007/s10278-021-00531-5

Web of Science

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PATIENT-SPECIFIC ORGAN DOSE EVALUATION BASED ON MONTE CARLO SIMULATION AND DOSE METRICS IN PAEDIATRIC CHEST-ABDOMEN-PELVIS CT EXAMINATIONS

Fujii, K; Nomura, K; Muramatsu, Y; Ota, H

RADIATION PROTECTION DOSIMETRY   Vol. 197 ( 1 ) page： 46 - 53   2021.11

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DOI： 10.1093/rpd/ncab157

Web of Science

PubMed

MEASUREMENT OF HALF-VALUE LAYER IN COMPUTED TOMOGRAPHY SCANNERS USING LUMINESCENCE OF POLYETHERSULFONE RESIN BY X-RAY IRRADIATION

Yamauchi-Kawaura, C; Maki, E; Fujii, K; Komori, M; Imai, K

RADIATION PROTECTION DOSIMETRY   Vol. 196 ( 1-2 ) page： 26 - 33   2021.11

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DOI： 10.1093/rpd/ncab126

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Radiation Dose Reduction for Computed Tomography Localizer Radiography Using an Ag Additional Filter

Nomura, K; Fujii, K; Goto, T; Tsukagoshi, S; Ota, H; Iwabuchi, Y; Suzuki, H; Muramatsu, Y; Kobayashi, T

JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY   Vol. 45 ( 1 ) page： 84 - 92   2021.1

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DOI： 10.1097/RCT.0000000000001026

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Correlation analysis of organ doses determined by Monte Carlo simulation with dose metrics for patients undergoing chest-abdomen-pelvis CT examinations

Fujii, K; Nomura, K; Muramatsu, Y; Goto, T; Obara, S; Ota, H; Tsukagoshi, S

PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS   Vol. 77   page： 1 - 9   2020.9

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DOI： 10.1016/j.ejmp.2020.07.016

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DEVELOPMENT OF A JAPANESE INFANT HEAD-CHEST PHANTOM AND INVESTIGATION OF THE CURRENT STATUS OF INFANT HEAD CT EXAMINATIONS IN JAPAN

Yamauchi-Kawaura, C; Fujii, K; Yamauchi, M; Imai, K; Ikeda, M; Narai, K; Shimizu, H

RADIATION PROTECTION DOSIMETRY   Vol. 188 ( 1 ) page： 65 - 72   2020.1

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DOI： 10.1093/rpd/ncz261

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SHAPE ESTIMATION OF BOWTIE FILTERS BASED ON THE LUMINESCENCE FROM POLYETHYLENE TEREPHTHALATE RESIN BY X-RAY IRRADIATION

Yamauchi-Kawaura, C; Fujii, K; Yamauchi, M; Yamamoto, S; Kozuka, M; Ohzawa, N; Suga, N; Ito, N

RADIATION PROTECTION DOSIMETRY   Vol. 185 ( 4 ) page： 432 - 439   2019.12

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DOI： 10.1093/rpd/ncz031

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Validation of Monte Carlo dose calculation for paediatric CT examinations using tube current modulation based on in-phantom dosimetry Reviewed

Keisuke Fujii, Keiichi Nomura, Yoshihisa Muramatsu, Satoshi Obara, Takahiro Goto, Keiichi Akahane, Hiroyuki Ota, Shinsuke Tsukagoshi, Masahiko Kusumoto

Radiation Protection Dosimetry   Vol. 182 ( 4 ) page： 508 - 517   2018.12

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DOI： 10.1093/rpd/ncy109

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PubMed

MEASUREMENT OF INTERNAL RADIATION DOSE DISTRIBUTION IN CT EXAMINATIONS USING POLYETHYLENE TEREPHTHALATE RESIN

Yamauchi-Kawaura, C; Yamamoto, S; Fujii, K; Komori, M; Yamauchi, M; Ohzawa, N; Kozuka, M; Suga, N; Ito, N; Fukuyama, A

RADIATION PROTECTION DOSIMETRY   Vol. 181 ( 4 ) page： 303 - 309   2018.11

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DOI： 10.1093/rpd/ncy026

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Contrast enhancement efficacy of iodinated contrast media: Effect of molecular structure on contrast enhancement.

Imai K, Ikeda M, Satoh Y, Fujii K, Kawaura C, Nishimoto T, Mori M

European journal of radiology open   Vol. 5   page： 183 - 188   2018

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DOI： 10.1016/j.ejro.2018.09.005

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Organ dose evaluations based on Monte Carlo simulation for CT examinations using tube current modulation Reviewed

FUJII Keisuke, NOMURA Keiichi, MURAMATSU Yoshihisa, OBARA Satoshi, AKAHANE Keiichi, KUSUMOTO Masahiko

Radiation Protection Dosimetry   Vol. 174 ( 3 ) page： 387 - 394   2017.4

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PubMed ID: 27342451

DOI： 10.1093/rpd/ncw144

Web of Science

PubMed

Patient size specific analysis of dose indexes from CT lung cancer screening Reviewed

FUJII Keisuke, MCMILLAN Kyle, BOSTANI Maryam, CAGNON Christopher, MCNITT-GRAY Michael

American Journal of Roentgenology   Vol. 208 ( 1 ) page： 144 - 149   2017.1

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PubMed ID: 27726409

DOI： 10.2214/AJR.16.16082

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PubMed

Estimation of Organ and Effective Doses for Neonate and Infant Diagnostic Cardiac Catheterizations Reviewed

KAWASAKI Toshio, FUJII Keisuke, AKAHANE Keiichi

American Journal of Roentgenology   Vol. 205 ( 3 ) page： 599-603   2015.9

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PubMed ID: 26295648

DOI： 10.2214/AJR.14.13852

Evaluation of organ doses in adult and paediatric CT examinations based on Monte Carlo simulations and in-phantom dosimetry Reviewed

FUJII Keisuke, NOMURA Keiichi, MURAMATSU Yoshihisa, TAKAHASHI Keisuke, OBARA Satoshi, AKAHANE Keiichi, SATAKE Mitsuo

Radiation Protection Dosimetry   Vol. 165 ( 1-4 ) page： 166-171   2015.7

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PubMed ID: 25848103

DOI： 10.1093/rpd/ncv074

Development of age-specific Japanese head phantoms for dose evaluation in paediatric head CT examinations Reviewed

YAMAUCHI-KAWAURA Chiyo, FUJII Keisuke, AKAHANE Keiichi, YAMAUCHI Masato, NARAI Kazuhiro, AOYAMA Takahiko, KATSU Toshihiko, OBARA Satoshi, IKEDA Mitsuru

Radiation Protection Dosimetry   Vol. 163 ( 2 ) page： 188-201   2015.2

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PubMed ID: 24821932

DOI： 10.1093/rpd/ncu155

Effective and organ doses using helical 4DCT for thoracic and abdominal therapies Reviewed

MATSUZAKI Yuka, FUJII Keisuke, KUMAGAI Motoki, TSURUOKA Ichiro, MORI Shinichiro

Journal of Radiation Research   Vol. 54 ( 5 ) page： 962-970   2013.9

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PubMed ID: 23603303

DOI： 10.1093/jrr/rrt024

Organ dose and effective dose estimation in paediatric chest radiographic examinations by using pin silicon photodiode dosemeters Reviewed

KAWASAKI Toshio, AOYAMA Takahiko, YAMAUCHI-KAWAURA Chiyo, FUJII Keisuke, KOYAMA Shuji

Radiation Protection Dosimetry   Vol. 154 ( 3 ) page： 314-319   2013.5

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Pubmed ID: 23019596

DOI： 10.1093/rpd/ncs251

Comparison of radiation doses between newborns and 6-y-old children undergoing head, chest and abdominal CT examinations: a phantom study Reviewed

SUGIMOTO Naruto, AOYAMA Takahiko, KOYAMA Shuji, YAMAUCHI-KAWAURA Chiyo, FUJII Keisuke

Radiation Protection Dosimetry   Vol. 153 ( 1 ) page： 85-91   2013.1

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PubMed ID: 22645383

DOI： 10.1093/rpd/ncs085

診断X線検査による乳幼児, 小児, 成人の被ばく線量－X線CTの場合 Reviewed

青山隆彦, 小山修司, 川浦稚代, 杉本成人, 藤井啓輔, 瀬口繁信, 川崎稔生

保健物理   Vol. 47 ( 4 ) page： 270-281   2012.12

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診断X線検査による乳幼児, 小児, 成人の被ばく線量－X線単純撮影の場合 Reviewed

青山隆彦, 小山修司, 川浦稚代, 杉本成人, 藤井啓輔, 川崎稔生

保健物理   Vol. 47 ( 2 ) page： 130-140   2012.6

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Evaluation of organ doses in CT examinations with an infant anthropomorphic phantom Reviewed

FUJII Keisuke, AKAHANE Keiichi, MIYAZAKI Osamu, HORIUCHI Tetsuya, SHIMADA Ayano, NAGAMATSU Hiroshi, YAMAUCHI Masato, YAMAUCHI-KAWAURA Chiyo, KAWASAKI Toshio

Radiation Protection Dosimetry   Vol. 147 ( 1-2 ) page： 151-155   2011.9

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PubMed ID: 21743079

DOI： 10.1093/rpd/ncr289

Nationwide survey on pediatric CT among children of public health and school nurses to examine a possibility for a follow-up study on radiation effects Reviewed

ONO Kouji, BAN Nobihiko, OJIMA Mitsuaki, YOSHINAGA Shinji, AKAHANE Keiichi, FUJII Keisuke, et al.

Radiation Protection Dosimetry   Vol. 146 ( 1-3 ) page： 260-262   2011.7

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PubMed ID: 21543349

DOI： 10.1093/rpd/ncr165

Dose measurement for medical staff with glass dosemeters and thermoluminescence dosemeters during 125I brachytherapy for prostate cancer Reviewed

FUJII Keisuke, KO Susumu, NAKO Yasunobu, TONARI Ayako, NISHIZAWA Kanae, AKAHANE Keiichi, TAKAYAMA Makoto

Radiation Protection Dosimetry   Vol. 144 ( 1-4 ) page： 459-463   2011.3

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PubMed ID: 21212076

DOI： 10.1093/rpd/ncq572

Radiation dose evaluation in multidetector-row CT imaging for acute stroke with an anthropomorphic phantom Reviewed

YAMAUCHI-KAWAURA Chiyo, FUJII Keisuke, YAMAUCHI Masato, KOYAMA Shuji

  Vol. 83 ( 996 ) page： 1029-1041   2010.12

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PubMed ID: 21088088

Patient radiation dose in prospectively gated axial CT coronary angiography and retrospectively gated helical technique with a 320-detector row CT scanner Reviewed

SEGUCHI Shigenobu, AOYAMA Takahiko, KOYAMA Shuji, YAMAUCHI-KAWAURA Chiyo, FUJII Keisuke

  Vol. 37 ( 11 ) page： 5579-5585   2010.11

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PubMed ID: 21158269

DOI： 10.1118/1.3496985

Radiation dose evaluation in head and neck MDCT examinations with a 6-year-old child anthropomorphic phantom Reviewed

YAMAUCHI-KAWAURA Chiyo, FUJII Keisuke, AOYAMA Takahiko, KOYAMA Shuji, YAMAUCHI Masato

Pediatric Radiology   Vol. 40 ( 7 ) page： 1010-1018   2010.7

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PubMed ID: 20066408

DOI： 10.1007/s00247-009-1495-z

市中病院におけるＭＤＣＴを用いた肺がんドック検診 Reviewed

宮本忠明, 松本　徹, 加藤　肇, 加藤伸次, 大竹一成, 佐藤　元, 西澤かな枝, 幸　進, 藤井啓輔, 和田真一

CT検診   Vol. 17 ( 2 ) page： 71-78   2010.5

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Radiation dose evaluation in 64-slice CT examinations with adult and paediatric anthropomorphic phantoms Reviewed

FUJII Keisuke, AOYAMA Takahiko, YAMAUCHI-KAWAURA Chiyo, KOYAMA Shuji, YAMAUCHI Masato, KO Susumu, AKAHANE Keiichi, NISHIZAWA Kanae

British Journal of Radiology   Vol. 82 ( 984 ) page： 1010-1018   2009.12

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PubMed ID: 19934069

DOI： 10.1259/bjr/13320880

Evaluation of radiation doses from MDCT-imaging in otolaryngology Reviewed

YAMAUCHI-KAWAURA Chiyo, FUJII Keisuke, AOYAMA Takahiko, YAMAUCHI Masato, KOYAMA Shuji

Radiation Protection Dosimetry   Vol. 136 ( 1 ) page： 38-44   2009.8

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PubMed ID: 19617599

DOI： 10.1093/rpd/ncp138

Evaluation of patient dose for barium enemas and CT colonography in Japan Reviewed

HIROFUJI Yoshiaki, AOYAMA Takahiko, KOYAMA Shuji, KAWAURA Chiyo, FUJII Keisuke

British Journal of Radiology   Vol. 82 ( 975 ) page： 219-227   2009.3

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PubMed ID: 19064598

DOI： 10.1259/bjr/18915538

Evaluation of exposure dose to patients undergoing catheter ablation procedures - a phantom study Reviewed

SEGUCHI Shigenobu, AOYAMA Takahiko, KOYAMA Shuji, KAWAURA Chiyo, FUJII Keisuke

European Radiology   Vol. 18 ( 11 ) page： 2559-2567   2008.11

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PubMed ID: 18491105

DOI： 10.1007/s00330-008-1025-7

Comparative evaluation of organ and effective doses for paediatric patients with those for adults in chest and abdominal CT examinations Reviewed

FUJII Keisuke, AOYAMA Takahiko, KOYAMA Shuji, KAWAURA Chiyo

British Journal of Radiology   Vol. 80 ( 956 ) page： 657-667   2007.8

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PubMed ID: 17762056

DOI： 10.1259/bjr/97260522

ＣＴ被曝の評価と問題点 Reviewed

小山修司, 青山隆彦, 川浦稚代, 藤井啓輔

臨床放射線   Vol. 51 ( 13 ) page： 1811-1819   2006.12

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Patient exposure dose delivered by modern multi-detector helical computed tomography

KOYAMA Shuji, FUJII Keisuke, AOYAMA Takahiko, KAWAURA Chiyo

Proceedings of the Second Asian and Oceanic Congress for Radiation Protection     page： 1376-1379   2006.9

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Spherical photodiode dosimeter for x-rays and its application to the measurement of exposure dose in pediatric CT examinations Reviewed

FUJII Keisuke, AOYAMA Takahiko, KOYAMA Shuji, KAWAURA Chiyo, ACHIWA Masataka

KEK proceedings     page： 126-135   2005.12

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Organ and Effective dose evaluation for pediatric and adult patients undergoing CT examinations based on the dosimetry within anthropomorphic phantoms

AOYAMA Takahiko, KOYAMA Shuji, KAWAURA Chiyo, FUJII Keisuke

Biomedizinische Technik   Vol. 50 ( 2 ) page： 1290-1291   2005.9

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