Papers - IMAI, Kuniharu
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Development and validation of the effective CNR analysis method for evaluating the contrast resolution of CT images Reviewed
Igarashi, K. , Imai, K. , Matsushima, S. , Yamauchi-Kawaura, C. , Fujii, K.
Physical and Engineering Sciences in Medicine Vol. 47 ( 2 ) page： 717 - 727 2024
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Exploring Indicators of Subcutaneous Tissue Fluid Accumulation in Breast Cancer-Related Lymphedema Patients Using Fractal Analysis with Virtual Volume Reviewed
Niwa, Shiori; Hisano, Fumiya; Mawaki, Ayana; Nakanishi, Keisuke; Watanabe, Sachiyo; Fukuya, Atsushi; Kikumori, Toyone; Shimamoto, Kazuhiro; Imai, Kuniharu; Fujimoto, Etsuko; Oshima, Chika
Lymphatic Research and Biology Vol. 21 ( 5 ) page： 432 - 438 2023
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Relationship between Dilution Magnification of Non-Ionic Iodinated Contrast Medium and Amplification Effect of Radiation Dose Reviewed
Fujii, K. , Nomura, K. , Imai, K. , Tsushima, S. , Ota, H.
Journal of Neuroendvascular Therapy Vol. 16 ( 2 ) page： 586 - 592 2022.10
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Evaluation of Apparent Noise on CT Images Using Moving Average Filters Reviewed
Fujii, K. , Nomura, K. , Imai, K. , Tsushima, S. , Ota, H.
Journal of Digital Imaging Vol. 35 ( 1 ) page： 77 - 85 2022
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MEASUREMENT OF HALF-VALUE LAYER IN COMPUTED TOMOGRAPHY SCANNERS USING LUMINESCENCE OF POLYETHERSULFONE RESIN BY X-RAY IRRADIATION Reviewed
Radiation Protection Dosimetry Vol. 196 page： 26 - 33 2021
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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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Contrast enhancement efficacy of iodinated contrast media: Effect of molecular structure on contrast enhancement Reviewed
Kuniharu Imai, Mitsuru Ikeda, Yoshiki Satoh. Keisuke Fujii, Chiyo Kawaura, Takuya Nishimoto, Masak iMori.
European Journal of Radiology Open page： in2018 press 2018.11
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Contrast enhancement efficacy of iodinated contrast media: Effect of molecular structure on contrast enhancement
Imai Kuniharu, Ikeda Mitsuru, Satoh Yoshiki, Fujii Keisuke, Kawaura Chiyo, Nishimoto Takuya, Mori Masaki
EUROPEAN JOURNAL OF RADIOLOGY OPEN Vol. 5 page： 183 - 188 2018
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非イオン性ヨード製剤の化学毒性軽減に関する定性的解釈と疑問 Invited
今井國治
健康文化 Vol. 52 page： 142-146 2017.10
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Quantitative Evaluation of Metal Artifacts on CT Images on the Basis of Statistics of Extremes Reviewed
Vol. 72 ( 5 ) page： 402-409 2016.5
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水溶性ヨード製剤の薬剤学的解析
今井國治
健康文化振興財団紀要 Vol. 50 page： 117-123 2015.12
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Arterial contour detectability in head CT angiography Reviewed
ENCHI Yukihiro, IMAI Kuniharu, IKEDA Mitsuru, TAKASE Ikuko, YAMAUCHI-KAWAURA Chiyo, MORI Masaki
International Journal of Computer Assisted Radiology and Surgery Vol. 10 ( 1 ) page： 1-10 2015.1
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診断用X線画像におけるノイズの二重面性-確率共鳴現象の発現
今井國治
健康文化振興財団 Vol. 49 page： 96-100 2014.12
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Evaluation of the Enhancement Effect in the Intracranial Imaging Using Iso-osmlar Contrast Media Reviewed
Vol. 28 ( 4 ) page： 459-462 2013.10
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Method for measuring contrast-to-noise ratio (CNR) in non-uniform image area in digital radiography Reviewed
Masaki Mori, Kuniharu Imai, Mitsuru Ikeda, Yoko Iida, Fukiko Itoh, Kazuo Yoneda, Yukihiro Enchi
Electronics and Communications in Japan Vol. 96 ( 7 ) page： 32-41 2013.7
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CT画像の画質評価と数学
今井國治
健康文化振興財団紀要 Vol. 47 page： 133-137 2012.10
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Dose reduction and image quality in CT angiography for cerebral aneurysm with various tube voltage and current settings Reviewed
IMAI Kuniharu, IKEDA Mitsuru, KAWAURA Chiyo, AOYAMA Takahiko, ENCHI Yukihiro, YAMAUCHI Masato
The British Journal of Radiology Vol. 85 page： 673-681 2012.9
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Method for Measuring Contrast-to-Noise Ratio (CNR) in Non-uniform Image Area on Digital Radiography Reviewed
MORI Masaki, IMAI Kuniharu, IKEDA Mitsuru, IIDA Yoko, ITO Fukiko, YONEDA Kazuo, ENCHI Yukihiro
IEEJ Transactions on Electronics, Information and Systems Vol. 131 ( 11 ) page： 1975-1982 2011.11
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Quantification of image quality using information theory Reviewed
NIIMI Takanaga, IMAI Kuniharu, Hisatoshi, IKEDA Mitsuru
Australasian Physical & Engineering Sciences in Medicine page： in press 2011.11
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A detection method for streak artifacts and radiological noise in non-uniform region in a CT image Reviewed
IMAI Kuniharu, IKEDA Mitsuru, ENCHI Yukihiro, NIIMI Takanaga
Phys Medica Vol. 26 page： 157-165 2010.6
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頭部CT画像における画質とそれに及ぼす線量効果
今井國治, 池田充, 川浦稚代
平成22年度科学研究費補助金（基盤C）報告書 page： 1-2 2010.5
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Fractal-Feature Distance Analysis of Contrast-Detail Phantom Image and Meaning of Pseudo Fractal Dimension and Complexity Reviewed
Kuniharu Imai, Mitsuru Ikeda, Yukihiro Enchi, Takanaga Niimi
Australasian Physical and Engineering Sciences in Medicine Vol. 32 ( 4 ) page： 188-195 2009.12
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Quantitative Assessment of Image Noise and Streak Artifact on CT Image: Comparison of Z-axis Automatic Tube Current Modulation Technique with Fixed Tube Current Technique Reviewed
Kuniharu Imai, Mitsuru Ikeda, Yukihiro Enchi, Takanaga Niimi
Computerized Medical Imaging and Graphics (Computerized Radiology) Vol. 33 ( 5 ) page： 353-358 2009.7
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*Statistical Characteristics of Streak Artifacts on CT Images: Relationship between Streak Artifacts and mAs-values Reviewed
Kuniharu Imai, Mitsuru Ikeda, Yukihiro Enchi, Takanaga Niimi
Medical Physics Vol. 36 ( 2 ) page： 492-499 2009.2
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*Quantitative Assessment of the Influence of Anatomic Noise on the Detection of Subtle Lung Nodule in Digital Chest Radiography Using Fractal-Feature Distance Reviewed
Kuniharu Imai, Mitsuru Ikeda, Yukihiro Enchi, Takanaga Niimi
European Journal of Radiology Vol. 68 page： 353-357 2008.11
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Fractal-feature distance as a substitute for observer performance index in contrast-detail examination Reviewed
Kuniharu Imai, Mitsuru Ikeda, Yukihiro Enchi, Takanaga Niimi
European Journal of Radiology Vol. 67 ( 3 ) page： 541-545 2008.9
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*Analysis of Streak Artefacts on CT Images Using Statistics of Extremes Reviewed
Kuniharu Imai, Mitsuru Ikeda, Yukihiro Enchi, Takanaga Niimi
The British Journal of Radiology Vol. 80 ( 959 ) page： 911-918 2007.11
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Information Loss in Visual Assessments of Medical Images Reviewed
Takanaga Niimi, Kuniharu Imai, Mitsuru Ikeda, Hisatoshi Maeda
European Journal of Radiology Vol. 61 ( 2 ) page： 362-366 2007.2
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*Fractal-Feature Distance Analysis of Radiographic Image Reviewed
Kuniharu Imai, Mitsuru Ikeda, Yukihiro Enchi, Takanaga Niimi
Academic Radiology Vol. 14 ( 2 ) page： 137-143 2007.2
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A new method for quantitative evaluation of artifacts on CT images using statistics of extremes Reviewed
Vol. 16 page： 469 2006.3
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The application of information theory to contrast-detail analysis Reviewed
European Radiology Vol. 16 page： 475 2006.3
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*The Application of Markov Theory to Contrast-Detail Analysis, Academic Radiology Reviewed
Kuniharu Imai, Mitsuru Ikeda, Takanaga Niimi
Academic Radiology Vol. 13 ( 2 ) page： 152-158 2006.2
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A method of clustering observers with different visual characteristicsTakanaga Niimi, Kuniharu Imai, Mitsuru Ikeda, Hisatoshi Maeda Reviewed
Takanaga Niimi, Kuniharu Imai, Mitsuru Ikeda, Hisatoshi Maeda
European Journal of Radiology Vol. 57 ( 1 ) page： 158-161 2006.1
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PD degradation process of fatigue failure type in a micro gap under the surface discharge pattern of Gleitbüschel type Reviewed
Yukihiro Kinoshita, Kuniharu Imai
IEEE/The 8th International Conference on Properties and Application of Dielectric Material page： 345-348 2006
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The properties of PD degradation of fatigue failure type in micro gap Reviewed
page： 214-217 2005.10
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マルコフ連鎖を用いた医用画像の視覚評価法とそれに伴う新しい画像観察法（マルコフ連鎖型画像観察法）の考案 Reviewed
新美孝永、今井國治、池田充、前田尚利
電子情報通信学会論文誌A Vol. J-88-A ( 7 ) page： 858-861 2005.7
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PD degradation process of fatigue failure type in a micro gap Reviewed
Kuniharu Imai
Proceedings of 2005 International Symposium on Electrical Insulating Materials page： 447-450 2005.6
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The strict meaning of the area under a contrast-detail (C-D) curve Reviewed
Vol. 15 page： 540 2005.3
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Reliability of contrast-detail (C-D) diagram deduced from a Markov Chain and reduction in the number of observation times Reviewed
Vol. 15 page： 539 2005.3
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A New visual Evaluation Method Quantifying Visual Information Losses in Medical Imaging System Reviewed
Kuniharu Imai, Takanaga, Niimi, Mitsuru Ikeda, Hisatoshi, Maeda, Akihiro Amano
RSNA Scientific Assembly and Annual Meeting 2004 page： 734 2004.12
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Relationship between surface discharge of Gleitbüschel type in an artificial void and pit formation: Reviewed
Kuniharu Imai
IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena page： 141-144 2004.10
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Statistical Analysis of Electrical Breakdown in a Micro Gap Using Weibull Distribution and Discussion on its Process in High Voltage Reviewed
Kuniharu Imai
IEE, Transactions on Fundamentals and Materials Vol. 124 ( 9 ) page： 785-790 2004.9
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判断基準の違いに基づいた観察者のグループ化と最適クラスタ化法の選択－医師的な判断基準を有する観察者集団の検証－ Reviewed
新美孝永、今井國治、亀谷健一、日置竹志、真野晃浩
日本放射線技術学会雑誌 Vol. 60 ( 4 ) page： 513-519 2004.4
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Evaluation of X-ray Images on the Basis of Difference in Observer’s Visual Characteristics: grouping of Observer’s Visual Characteristics Using Cluster Analysis Methods Reviewed
page： 721 2003.12
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クラスタ解析を用いた観察者集団の分類とその判定基準：日本放射線技術学会雑誌 Reviewed
新美孝永、今井國治、亀谷健一、日置竹志、真野晃浩
日本放射線技術学会雑誌 Vol. 59 ( 10 ) page： 1268-1276 2003.10
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Relationship between surface discharge of Polbüschel type in an artificial void and pit formation Reviewed
Kuniharu Imai
IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena page： 237-240 2003.10
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模擬ボイドモデルを用いた微小空隙のPD劣化・破壊特性 Reviewed
今井國治
電気学会論文誌 Vol. 123-A ( 8 ) page： 819-820 2003.8
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Influence of speherulitic structure in LDPE on tree propagation from a simulated tree channel Reviewed
page： CD 4ページ 2003.8
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Statistical analysis of pit formation in an artificial void with Weibull distribution Reviewed
page： 345-348 2003.6
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X線画像評価におけるクラスタ解析の有用性 Reviewed
新美孝永、今井國治
日本医用画像工学会誌 Vol. 121 ( 1 ) page： 75-80 2003.1
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Properties of tree propagation from a simulated tree channel in LLDPE prepared by metallocene catalyst Reviewed
Kuniharu Imai
IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena page： 963-966 2002.10
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模擬トリーからのトリー伸展に及ぼすアニール効果－初期・偶発的なトリー伸展要因の検証－ Reviewed
今井國治
静電気学会誌 Vol. 26 ( 4 ) page： 175-181 2002.8
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模擬トリー径と模擬トリーから伸展するトリーの伸展要因との関係 Reviewed
今井國治
静電気学会誌 Vol. 26 ( 2 ) page： 84-90 2002.4
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模擬トリーから伸展するトリーのワイブル分布に基づく解析とそれに及ぼす温度の影響 Reviewed
今井國治
静電気学会誌 Vol. 25 ( 5 ) page： 271-276 2001.10
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模擬トリーからの摩耗的トリー伸展開始についての検討 Reviewed
今井國治
電気学会論文誌Ａ Vol. 121-A ( 8 ) page： 803-804 2001.8
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Tree at High Temperature in XLPE and Effect of Oxygen Reviewed
Noriyuki Shimizu, Kouhei Ito, Kuniharu Imai, Masahito Nawata
IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena page： 329-332 2000.10
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Influence of Polymer Structure on Tree Growth from a Simulated Tree Channel Reviewed
Kuniharu Imai, Kouhei Ito, Noriyuki Shimizu, Masahito Nawata
IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena page： 337-340 2000.10
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Mechanism of Tree Propagation from a Simulated Tree Channel Reviewed
Kuniharu Imai, Takao Suzuki, Kouhei Ito, Noriyuki Shimizu, Masahito Nawata
IEEE/ Proceeding of The 6th International Conference on Properties and Application of Dielectric Material page： 239-242 2000.6
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ワイブル分布を用いたトリー発生特性とそれに及ぼす諸要因 Reviewed
今井國治、鈴木貴雄、清水教之、縄田正人
電気学会論文誌Ａ Vol. 120-A ( 5 ) page： 645-650 2000.5
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模擬トリー（細管）中の放電特性とそれを介したポリプロピレンフィルムの絶縁破壊 Reviewed
今井國治、竹内悟、西山真貴、兼松篤、縄田正人
電気学会論文誌Ａ Vol. 117-A ( 4 ) page： 388-396 1997.4
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ホワイトヘッドモデル電極系（模擬ボイド）における放電電圧に及ぼす諸要因 Reviewed
今井國治、竹内悟、西山真貴、兼松篤、縄田正人
電気設備学会誌 Vol. 16 ( 12 ) page： 1280-1287 1996.12
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Various Conditions Influence on Discharge Voltage at an Artificial Void Model Reviewed
Kuniharu Imai, Masaki Nishiyama, Atsushi Kanematsu, Masahito Nawata
Proceeding of The 9th International Symposium on High Voltage Engineering page： 4ページ分 1995.9
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Kerr Constant Frequency Dependence of Liquid Nitrogen Reviewed
Kuniharu Imai, Atsushi Kanematsu, Masahito Nawata, Markus Zhan
IEEE/ Proceedings of The 3th International Conference on Properties and Application of Dielectric Material page： 280-283 1991.6