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

PubMed

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

PubMed

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