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Comprehensive study of radiation dose reduction of CT

Research Project

Project/Area Number 16K10285
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Radiation science
Research InstitutionKumamoto University

Principal Investigator

Yamashita Yasuyuki  熊本大学, 大学院生命科学研究部(医), 教授 (60220349)

Co-Investigator(Kenkyū-buntansha) 北島 美香  熊本大学, 医学部附属病院, 准教授 (60305018)
宇都宮 大輔  横浜市立大学, 医学研究科, 教授 (30571046)
中浦 猛  熊本大学, 大学院生命科学研究部(医), 特任講師 (90437913)
尾田 済太郎  熊本大学, 大学院生命科学研究部(医), 特任助教 (80571041)
船間 芳憲  熊本大学, 大学院生命科学研究部(保), 教授 (30380992)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
KeywordsCT被曝 / 低電圧撮像法 / 逐次近似法 / dual energy CT / 低被曝CT / 低電圧CT / CT / 放射線被曝 / フィルターバックプロジェクション法 / 再構成アルゴリズム / 画像診断学(含放射線診断学)
Outline of Final Research Achievements

The value of CT studies were evaluated in various organs and diseases by means of literature search. This results were reported in Japanese Imaging Guidelines. The value of model based iterative reconstruction was clinically evaluated in comparison with filtered back projection technique. We found substantial radiation dose reduction can be achieved while image quality was maintained. We also found low voltage CT technique is useful not only in reducing radiation dose but also increasing CT attenuation of contrast material. This technique was useful in pediatric patients and patients with renal dysfunction.

Academic Significance and Societal Importance of the Research Achievements

低被曝法、低電圧撮像及びdual energy CTによるmonochromatic image、逐次近似法などを適切に使うことで、診断能を維持したまま、低被曝及び造影剤減量が可能となることを明らかとした。今後の日常診療においてこれらの技術を使うことで、診断的に許容できる範囲で大幅な低被曝を達成できることを明らかにした。国民のCT による被曝量の低下に寄与できると考える。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (87 results)

All 2019 2018 2017 2016

All Journal Article (51 results) (of which Int'l Joint Research: 17 results,  Peer Reviewed: 51 results,  Open Access: 51 results,  Acknowledgement Compliant: 16 results) Presentation (36 results) (of which Int'l Joint Research: 15 results)

  • [Journal Article] Contrast Enhancement Boost Technique at Aortic Computed Tomography Angiography: Added Value for the Evaluation of Type II Endoleaks After Endovascular Aortic Aneurysm Repair2019

    • Author(s)
      Iizuka Hitoshi、Yokota Yasuhiro、Kidoh Masafumi、Oda Seitaro、Ikeda Osamu、Tamura Yoshitaka、Funama Yoshinori、Sakabe Daisuke、Nakaura Takeshi、Yamashita Yasuyuki、Utsunomiya Daisuke
    • Journal Title

      Academic Radiology

      Volume: 印刷中 Issue: 11 Pages: 1435-1440

    • DOI

      10.1016/j.acra.2019.01.009

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Epicardial fat volume measured on nongated chest CT is a predictor of coronary artery disease2019

    • Author(s)
      Nagayama Yasunori、Nakamura Naoki、Itatani Ryo、Oda Seitaro、Kusunoki Shinichiro、Takahashi Hideo、Nakaura Takeshi、Utsunomiya Daisuke、Yamashita Yasuyuki
    • Journal Title

      European Radiology

      Volume: 印刷中 Issue: 7 Pages: 3638-3646

    • DOI

      10.1007/s00330-019-06079-x

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Does the Tube Voltage Affect the Characterization of Coronary Plaques on 100- and 120-kVp Computed Tomography Scans2019

    • Author(s)
      Masuda Takanori、Nakaura Takeshi、Funama Yoshinori、Sato Tomoyasu、Okimoto Tomokazu、Noda Noritaka、Matsumoto Yoriaki、Yamashita Yukari、Imada Naoyuki、Awai Kazuo
    • Journal Title

      Journal of Computer Assisted Tomography

      Volume: 印刷中 Issue: 3 Pages: 1-1

    • DOI

      10.1097/rct.0000000000000845

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Low contrast material dose coronary computed tomographic angiography using a dual-layer spectral detector system in patients at risk for contrast-induced nephropathy.2019

    • Author(s)
      Oda S, Takaoka H, Katahira K, Honda K, Nakaura T, Nagayama Y, Taguchi N, Kidoh M, Utsunomiya D, Funama Y, Noda K, Oshima S, Yamashita Y
    • Journal Title

      British Journal of Radiology

      Volume: 92 Issue: 1094 Pages: 20180215-20180215

    • DOI

      10.1259/bjr.20180215

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Value of 100 kVp scan with sinogram-affirmed iterative reconstruction algorithm on a single-source CT system during whole-body CT for radiation and contrast medium dose reduction: an intra-individual feasibility study2018

    • Author(s)
      Nagayama Y.、Nakaura T.、Oda S.、Tsuji A.、Urata J.、Furusawa M.、Tanoue S.、Utsunomiya D.、Yamashita Y.
    • Journal Title

      Clinical Radiology

      Volume: 73 Issue: 2 Pages: 217.e7-217.e16

    • DOI

      10.1016/j.crad.2017.09.006

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dual-region-of-interest bolus-tracking technique for coronary computed tomographic angiography on a 320-row scanner: reduction in the interpatient variability of arterial contrast enhancement2018

    • Author(s)
      Kai Noriyuki、Oda Seitaro、Utsunomiya Daisuke、Nakaura Takeshi、Funama Yoshinori、Kidoh Masafumi、Taguchi Narumi、Iyama Yuji、Nagayama Yasunori、Hirata Kenichiro、Yuki Hideaki、Sakabe Daisuke、Hatemura Masahiro、Yamashita Yasuyuki
    • Journal Title

      The British Journal of Radiology

      Volume: 91 Issue: 1081 Pages: 20170541-20170541

    • DOI

      10.1259/bjr.20170541

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Contrast enhancement in abdominal computed tomography: influence of photon energy of different scanners2018

    • Author(s)
      Taguchi Narumi、Oda Seitaro、Nakaura Takeshi、Utsunomiya Daisuke、Funama Yoshinori、Imuta Masanori、Yuki Hideaki、Nagayama Yasunori、Kidoh Masafumi、Hirata Kenichiro、Iyama Yuji、Namimoto Tomohiro、Kai Noriyuki、Hatemura Masahiro、Yamashita Yasuyuki
    • Journal Title

      The British Journal of Radiology

      Volume: 91 Issue: 1081 Pages: 20170285-20170285

    • DOI

      10.1259/bjr.20170285

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Patient Characteristics on Vessel Enhancement at Lower Extremity CT Angiography2018

    • Author(s)
      Masuda Takanori、Nakaura Takeshi、Funama Yoshinori、Sato Tomoyasu、Higaki Toru、Kiguchi Masao、Yamashita Yukari、Imada Naoyuki、Awai Kazuo
    • Journal Title

      Korean Journal of Radiology

      Volume: 19 Issue: 2 Pages: 265-265

    • DOI

      10.3348/kjr.2018.19.2.265

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Brain computed tomography using iterative reconstruction to diagnose acute middle cerebral artery stroke: usefulness in combination of narrow window setting and thin slice reconstruction2018

    • Author(s)
      Inoue Taihei、Nakaura Takeshi、Yoshida Morikatsu、Yokoyama Koichi、Uetani Hiroyuki、Oda Seitaro、Utsunomiya Daisuke、Kitajima Mika、Harada Kazunori、Yamashita Yasuyuki
    • Journal Title

      Neuroradiology

      Volume: 60 Issue: 4 Pages: 373-379

    • DOI

      10.1007/s00234-018-1982-8

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of contrast material injection duration on arterial enhancement at CT in patients with various cardiac indices: Analysis using computer simulation2018

    • Author(s)
      Higaki Toru、Nakaura Takeshi、Kidoh Masafumi、Yuki Hideaki、Yamashita Yasuyuki、Nakamura Yuko、Tatsugami Fuminari、Baba Yasutaka、Iida Makoto、Awai Kazuo
    • Journal Title

      PLOS ONE

      Volume: 13 Issue: 2 Pages: e0191347-e0191347

    • DOI

      10.1371/journal.pone.0191347

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Application of 80-kVp scan and raw-data based iterative reconstruction for reduced iodine load abdominal-pelvic CT in patients at risk of contrast-induced nephropathy referred for oncological assessment: Effects on radiation dose, image quality and renal function2018

    • Author(s)
      Nagayama Yasunori、Tanoue Shota、Tsuji Akinori、Urata Joji、Furusawa Mitsuhiro、Oda Seitaro、Nakaura Takeshi、Utsunomiya Daisuke、Yoshida Eri、Yoshida Morikatsu、Kidoh Masafumi、Tateishi Machiko、Yamashita Yasuyuki
    • Journal Title

      The British Journal of Radiology

      Volume: 91 Issue: 1085 Pages: 20170632-20170632

    • DOI

      10.1259/bjr.20170632

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinical Usefulness of Dual-Energy Cardiac Computed Tomography in Acute Coronary Syndrome Using a Dual-Layer Spectral Detector Scanner2018

    • Author(s)
      Nishihara Taiki、Oda Seitaro、Sueta Daisuke、Izumiya Yasuhiro、Kaikita Koichi、Tsujita Kenichi、Utsunomiya Daisuke、Nakaura Takeshi、Yamashita Yasuyuki
    • Journal Title

      Circulation: Cardiovascular Imaging

      Volume: 11 Issue: 2

    • DOI

      10.1161/circimaging.117.007277

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Relationships between patient characteristics and contrast agent dose for successful computed tomography venography with a body-weight-tailored contrast protocol2018

    • Author(s)
      Iyama Yuji、Nakaura Takeshi、Kidoh Masafumi、Katahira Kazuhiro、Oda Seitaro、Utsunomiya Daisuke、Yamashita Yasuyuki
    • Journal Title

      Medicine

      Volume: 97 Issue: 14 Pages: e0231-e0231

    • DOI

      10.1097/md.0000000000010231

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dual-layer detector CT of chest, abdomen, and pelvis with a one-third iodine dose: image quality, radiation dose, and optimal monoenergetic settings2018

    • Author(s)
      Nagayama Y.、Nakaura T.、Oda S.、Taguchi N.、Utsunomiya D.、Funama Y.、Kidoh M.、Namimoto T.、Sakabe D.、Hatemura M.、Yamashita Y.
    • Journal Title

      Clinical Radiology

      Volume: 73 Issue: 12 Pages: 1058.e21-1058.e29

    • DOI

      10.1016/j.crad.2018.08.010

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The effect of heart rate on coronary plaque measurements in 320-row coronary CT angiography2018

    • Author(s)
      Kidoh Masafumi、Utsunomiya Daisuke、Funama Yoshinori、Sakabe Daisuke、Oda Seitaro、Nakaura Takeshi、Yuki Hideaki、Nagayama Yasunori、Hirata Kenichiro、Iyama Yuji、Namimoto Tomohiro、Yamashita Yasuyuki
    • Journal Title

      The International Journal of Cardiovascular Imaging

      Volume: 34 Issue: 12 Pages: 1977-1985

    • DOI

      10.1007/s10554-018-1415-0

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Radiation Dose Reduction With a Low-Tube Voltage Technique for Pediatric Chest Computed Tomographic Angiography Based on the Contrast-to-Noise Ratio Index2018

    • Author(s)
      Masuda Takanori、Funama Yoshinori、Nakaura Takeshi、Tahara Masahiro、Yamashita Yukari、Kiguchi Masao、Imada Naoyuki、Sato Tomoyasu、Awai Kazuo
    • Journal Title

      Canadian Association of Radiologists Journal

      Volume: 69 Issue: 4 Pages: 390-396

    • DOI

      10.1016/j.carj.2018.05.004

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development and Validation of Generalized Linear Regression Models to Predict Vessel Enhancement on Coronary CT Angiography2018

    • Author(s)
      Masuda Takanori、Nakaura Takeshi、Funama Yoshinori、Sato Tomoyasu、Higaki Toru、Kiguchi Masao、Matsumoto Yoriaki、Yamashita Yukari、Imada Naoyuki、Awai Kazuo
    • Journal Title

      Korean Journal of Radiology

      Volume: 19 Issue: 6 Pages: 1021-1021

    • DOI

      10.3348/kjr.2018.19.6.1021

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dual-energy computed tomography colonography using dual-layer spectral detector computed tomography: Utility of virtual monochromatic imaging for electronic cleansing2018

    • Author(s)
      Taguchi Narumi、Oda Seitaro、Imuta Masanori、Yamamura Sadahiro、Yokota Yasuhiro、Nakaura Takeshi、Nagayama Yasunori、Kidoh Masafumi、Utsunomiya Daisuke、Funama Yoshinori、Baba Hideo、Yamashita Yasuyuki
    • Journal Title

      European Journal of Radiology

      Volume: 108 Pages: 7-12

    • DOI

      10.1016/j.ejrad.2018.09.011

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Radiation Dose Reduction at Low Tube Voltage CCTA Based on the CNR Index2018

    • Author(s)
      Masuda Takanori、Funama Yoshinori、Nakaura Takeshi、Satou Tomoyasu、Okimoto Tomokazu、Yamashita Yukari、Imada Naoyuki、Awai Kazuo
    • Journal Title

      Academic Radiology

      Volume: 25 Issue: 10 Pages: 1298-1304

    • DOI

      10.1016/j.acra.2018.01.019

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Image quality characteristics for virtual monoenergetic images using dual-layer spectral detector CT: Comparison with conventional tube-voltage images2018

    • Author(s)
      Sakabe Daisuke、Funama Yoshinori、Taguchi Katsuyuki、Nakaura Takeshi、Utsunomiya Daisuke、Oda Seitaro、Kidoh Masafumi、Nagayama Yasunori、Yamashita Yasuyuki
    • Journal Title

      Physica Medica

      Volume: 49 Pages: 5-10

    • DOI

      10.1016/j.ejmp.2018.04.388

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tradeoff between noise reduction and inartificial visualization in a model-based iterative reconstruction algorithm on coronary computed tomography angiography2018

    • Author(s)
      Hirata Kenichiro、Utsunomiya Daisuke、Kidoh Masafumi、Funama Yoshinori、Oda Seitaro、Yuki Hideaki、Nagayama Yasunori、Iyama Yuji、Nakaura Takeshi、Sakabe Daisuke、Tsujita Kenichi、Yamashita Yasuyuki
    • Journal Title

      Medicine

      Volume: 97 Issue: 20 Pages: e10810-e10810

    • DOI

      10.1097/md.0000000000010810

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Model-based Iterative Reconstruction in Low-radiation-dose Computed Tomography Colonography2018

    • Author(s)
      Taguchi Narumi、Oda Seitaro、Imuta Masanori、Yamamura Sadahiro、Nakaura Takeshi、Utsunomiya Daisuke、Kidoh Masafumi、Nagayama Yasunori、Yuki Hideaki、Hirata Kenichiro、Iyama Yuji、Funama Yoshinori、Baba Hideo、Yamashita Yasuyuki
    • Journal Title

      Academic Radiology

      Volume: 25 Issue: 4 Pages: 415-422

    • DOI

      10.1016/j.acra.2017.10.008

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of metal-containing topical agents on surface doses received during external irradiation2018

    • Author(s)
      Iyama Ayumi、Matsuyama Tomohiko、Matsumoto Eriko、Araki Takafumi、Inokuchi Satoshi、Yamashita Mizuki、Honda Noritoshi、Miyake Taiga、Saito Tetsuo、Toya Ryo、Kai Yudai、Yamashita Yasuyuki、Oya Natsuo
    • Journal Title

      Journal of Radiation Research

      Volume: 59 Issue: 6 Pages: 794-799

    • DOI

      10.1093/jrr/rry078

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Novel assessment of retrospective on-demand analysis of venous thromboembolism by dual-layer spectral-detector CT2018

    • Author(s)
      Sueta Daisuke、Utsunomiya Daisuke、Izumiya Yasuhiro、Nakaura Takeshi、Oda Seitaro、Kaikita Koichi、Yamashita Yasuyuki、Tsujita Kenichi
    • Journal Title

      Journal of Cardiology Cases

      Volume: 18 Issue: 3 Pages: 88-91

    • DOI

      10.1016/j.jccase.2018.05.003

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Radiation Dose Reduction at Pediatric CT: Use of Low Tube Voltage and Iterative Reconstruction2018

    • Author(s)
      Nagayama Yasunori、Oda Seitaro、Nakaura Takeshi、Tsuji Akinori、Urata Joji、Furusawa Mitsuhiro、Utsunomiya Daisuke、Funama Yoshinori、Kidoh Masafumi、Yamashita Yasuyuki
    • Journal Title

      RadioGraphics

      Volume: 38 Issue: 5 Pages: 1421-1440

    • DOI

      10.1148/rg.2018180041

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Advanced parametric imaging for evaluation of Crohn's disease using dual-energy computed tomography enterography2018

    • Author(s)
      Taguchi Narumi、Oda Seitaro、Kobayashi Tateaki、Naoe Hideaki、Sasaki Yutaka、Imuta Masanori、Nakaura Takeshi、Yamashita Yasuyuki
    • Journal Title

      Radiology Case Reports

      Volume: 13 Issue: 3 Pages: 709-712

    • DOI

      10.1016/j.radcr.2018.04.002

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dual-layer dual-energy computed tomography for the assessment of hypovascular hepatic metastases: impact of closing k-edge on image quality and lesion detectability2018

    • Author(s)
      Nagayama Yasunori、Iyama Ayumi、Oda Seitaro、Taguchi Narumi、Nakaura Takeshi、Utsunomiya Daisuke、Kikuchi Yoko、Yamashita Yasuyuki
    • Journal Title

      European Radiology

      Volume: 印刷中 Issue: 6 Pages: 2837-2847

    • DOI

      10.1007/s00330-018-5789-0

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Basic Concepts of Contrast Injection Protocols for Coronary Computed Tomography Angiography2018

    • Author(s)
      Oda Seitaro、Utsunomiya Daisuke、Nakaura Takeshi、Kidoh Masafumi、Funama Yoshinori、Tsujita Kenichi、Yamashita Yasuyuki
    • Journal Title

      Current Cardiology Reviews

      Volume: 15 Issue: 1 Pages: 24-29

    • DOI

      10.2174/1573403x14666180918102031

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Four-dimensional cone-beam computed tomography-guided radiotherapy for gastric lymphoma2017

    • Author(s)
      Toya Ryo、Saito Tetsuo、Shimohigashi Yoshinobu、Yotsuji Yohei、Matsuyama Tomohiko、Watakabe Takahiro、Kai Yudai、Yamashita Yasuyuki、Oya Natsuo
    • Journal Title

      Jpn J Radiol

      Volume: 36 Issue: 2 Pages: 159-163

    • DOI

      10.1007/s11604-017-0698-8

    • NAID

      210000185088

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vectors through a cross-sectional image (VCI): A visualization method for four-dimensional motion analysis for cardiac computed tomography2017

    • Author(s)
      Kidoh Masafumi、Utsunomiya Daisuke、Funama Yoshinori、Ashikaga Hiroshi、Nakaura Takeshi、Oda Seitaro、Yuki Hideaki、Hirata Kenichiro、Iyama Yuji、Nagayama Yasunori、Fukui Toshihiro、Yamashita Yasuyuki、Taguchi Katsuyuki
    • Journal Title

      J Cardiovasc Comput Tomogr

      Volume: 11 Issue: 6 Pages: 468-473

    • DOI

      10.1016/j.jcct.2017.09.010

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Clinical potential of retrospective on-demand spectral analysis using dual-layer spectral detector-computed tomography in ischemia complicating small-bowel obstruction2017

    • Author(s)
      Oda Seitaro、Nakaura Takeshi、Utsunomiya Daisuke、Funama Yoshinori、Taguchi Narumi、Imuta Masanori、Nagayama Yasunori、Yamashita Yasuyuki
    • Journal Title

      Emerg Radiol

      Volume: 24 Issue: 4 Pages: 431-434

    • DOI

      10.1007/s10140-017-1511-9

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Radiation dose reduction using 100-kVp and a sinogram-affirmed iterative reconstruction algorithm in adolescent head CT: Impact on grey?white matter contrast and image noise2017

    • Author(s)
      Nagayama Yasunori、Nakaura Takeshi、Tsuji Akinori、Urata Joji、Furusawa Mitsuhiro、Yuki Hideaki、Hirarta Kenichiro、Kidoh Masafumi、Oda Seitaro、Utsunomiya Daisuke、Yamashita Yasuyuki
    • Journal Title

      Eur Radiol

      Volume: 27 Issue: 7 Pages: 2717-2725

    • DOI

      10.1007/s00330-016-4679-6

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] CT evaluation of living liver donor: Can 100-kVp plus iterative reconstruction protocol provide accurate liver volume and vascular anatomy for liver transplantation with reduced radiation and contrast dose?2017

    • Author(s)
      Morikatsu Yoshida; Daisuke Utsunomiya; Masafumi Kidoh; Hideaki Yuki; Seitaro Oda; Shinya Shiraishi; Hidekazu Yamamoto; Yukihiro Inomata; Yasuyuki Yamashita
    • Journal Title

      Medicine

      Volume: 96(23) Issue: 23 Pages: e6973-e6973

    • DOI

      10.1097/md.0000000000006973

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Breast dose reduction for chest CT by modifying the scanning parameters based on the pre-scan size-specific dose estimate (SSDE)2017

    • Author(s)
      Kidoh Masafumi、Utsunomiya Daisuke、Oda Seitaro、Nakaura Takeshi、Funama Yoshinori、Yuki Hideaki、Hirata Kenichiro、Namimoto Tomohiro、Sakabe Daisuke、Hatemura Masahiro、Yamashita Yasuyuki
    • Journal Title

      Send to Eur Radiol

      Volume: 27 Issue: 6 Pages: 2267-2274

    • DOI

      10.1007/s00330-016-4618-6

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shape and enhancement characteristics of pancreatic neuroendocrine tumor on preoperative contrast-enhanced computed tomography may be prognostic indicators.2017

    • Author(s)
      Okabe H, Hashimoto D, Chikamoto A, Morikatsu Y, Taki K, Arima K, Imai K,Tamura Y, Ikeda O, Ishiko T, Uchiyama H, Ikegami T, Harimoto N, Itoh S, Yamashita Y, Yoshizumi T, Beppu T, Yamashita Y, Baba H, Maehara Y.
    • Journal Title

      Ann Surg Oncol

      Volume: 24(5) Issue: 5 Pages: 1399-1405

    • DOI

      10.1245/s10434-016-5630-4

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Using 80 kVp on a 320-row scanner for hepatic multiphasic CT reduces the contrast dose by 50 % in patients at risk for contrast-induced nephropathy2017

    • Author(s)
      N.Taguchi
    • Journal Title

      European Radiology

      Volume: 27 Issue: 2 Pages: 812-820

    • DOI

      10.1007/s00330-016-4435-y

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The Influence of Iterative Reconstruction on Coronary Artery Calcium Scoring- Phantom and Clinical Studies2017

    • Author(s)
      S.Oda
    • Journal Title

      Academic Radiology

      Volume: 24 Pages: 295-301

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Reduction of metallic coil artefacts in computed tomography body imaging: effects of a new single-energy metal artefact reduction algorithm2016

    • Author(s)
      M.Kidoh
    • Journal Title

      European Radiology

      Volume: 26 Issue: 5 Pages: 1378-1386

    • DOI

      10.1007/s00330-015-3950-6

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] 256-Slice coronary computed tomographic angiography in patients with atrial fibrillation: optimal reconstruction phase and image quality2016

    • Author(s)
      S.Oda
    • Journal Title

      European Radiology

      Volume: 26 Issue: 1 Pages: 55-63

    • DOI

      10.1007/s00330-015-3822-0

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Clinical impact of model-based type iterative reconstruction with fast reconstruction time on image quality of low-dose screening chest CT2016

    • Author(s)
      H.Yuki
    • Journal Title

      Acta Radiologica

      Volume: 57 Pages: 295-302

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Evaluation of the Effect of Intracoronary Attenuation on Coronary Plaque Measurements Using a Dual-phase Coronary CT Angiography Technique on a 320-row CT Scanner- In Vivo Validation Study2016

    • Author(s)
      M.Kidoh
    • Journal Title

      Academic Radiology

      Volume: 23 Pages: 315-320

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Low-tube-voltage selection for non-contrast-enhanced CT: Comparison of the radiation dose in pediatric and adult phantoms2016

    • Author(s)
      T.Shimonobo
    • Journal Title

      Physica Medica

      Volume: 32 Pages: 197-201

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Effect of iterative reconstruction on variability and reproducibility of epicardial fat volume quantification by cardiac CT2016

    • Author(s)
      S.Oda
    • Journal Title

      Journal of Cardiovascular Computed Tomography

      Volume: 10 Pages: 150-155

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Comparison of iterative model, hybrid iterative, and filtered back projection reconstruction techniques in low-dose brain CT: impact of thin-slice imaging2016

    • Author(s)
      T.Nakaura
    • Journal Title

      Neuroradiology

      Volume: 58 Issue: 3 Pages: 245-251

    • DOI

      10.1007/s00234-015-1631-4

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Impact of knowledge-based iterative model reconstruction in abdominal dynamic CT with low tube voltage and low contrast dose2016

    • Author(s)
      Y.Iyama
    • Journal Title

      AJR Am J Roentgenol

      Volume: 206 Pages: 687-693

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Relationship between diverse patient body size- and image acquisition-related factors, and quantitative and qualitative image quality in coronary computed tomography angiography: a multicenter observational study2016

    • Author(s)
      D.Utsunomiya
    • Journal Title

      Japanese Journal of Radiology

      Volume: 34 Pages: 548-555

    • NAID

      210000180247

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] CT Angiography in Patients with Peripheral Arterial Disease: Effect of Small Focal Spot Imaging and Iterative Model Reconstruction on the Image Quality2016

    • Author(s)
      S.Oda
    • Journal Title

      Academic Radiology

      Volume: 23 Pages: 1283-1289

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Low-Contrast and Low-Radiation Dose Protocol in Cardiac Computed Tomography: Usefulness of Low Tube Voltage and Knowledge-Based Iterative Model Reconstruction Algorithm2016

    • Author(s)
      Y.Iyama
    • Journal Title

      Journal of Computer Assisted Tomography

      Volume: 40 Issue: 6 Pages: 941-947

    • DOI

      10.1097/rct.0000000000000440

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Submillisievert Radiation Dose Coronary CT Angiography : Clinical Impact of the Knowledge-Based Iterative Model Reconstruction2016

    • Author(s)
      Y.Iyama
    • Journal Title

      Academic Radiology

      Volume: 23 Pages: 1393-1401

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Transluminal attenuation-gradient coronary CT angiography on a 320-MDCT volume scanner: Effect of scan timing, coronary artery stenosis, and cardiac output using a contrast medium flow phantom2016

    • Author(s)
      Y.Funama
    • Journal Title

      Physica Medica

      Volume: 32 Pages: 1415-1421

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Additive value of 320-section low-dose dynamic volume CT in relation to 3-T MRI for the preoperative evaluation of brain tumors2016

    • Author(s)
      E.Hayashida
    • Journal Title

      Japanese Journal of Radiology

      Volume: 34 Issue: 10 Pages: 691-699

    • DOI

      10.1007/s11604-016-0576-9

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] The usefulness of virtual monoenergetic imaging from dual-layer spectral detector CT for the evaluation of hypovascular liver metastases: Impact of closing k-edge on image quality and lesion detectability2019

    • Author(s)
      Nagayama Y,Iyama A, Oda S, Taguchi N, Nakaura T, Utsunomiya D, Kikuchi Y, Yamashita Y.
    • Organizer
      ECR2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Utility of virtual monochromatic imaging using dual-layer detector spectral computed tomography for electronic cleansing in fecal-tagging CT colonography2018

    • Author(s)
      田口奈留美、尾田済太郎、伊牟田真功、中浦 猛、宇都宮大輔、山村定弘、土亀直俊、浦田譲冶、辻 明徳、山下康行
    • Organizer
      第77回日本医学放射線学会総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Clinical Implementation of Dual-Energy CT for Bowel Disease: It's Time to Embrace the Change2018

    • Author(s)
      Taguchi N, Oda S, Imuta M, Yokota Y, Nakaura T, Utsunomiya D, Ngayama Y, Funama Y, Tsuchigame T, Yamashita Y
    • Organizer
      RSNA2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Improving Image Quality of Intracranial CTA with Fully Model-based Iterative Reconstruction Technique: Comparison with Filtered Back Projection and Hybrid Iterative Reconstruction Algorithms2018

    • Author(s)
      Kitajima. M, Uetani. H, Tateishi. M, Nagayama, Y. Utsunomiya. D, Oda. S, 1)Kawano. T, 2)Nakajima. M, Yamashita. Y 1)Neurosurgery 2)Neurology
    • Organizer
      AOCNR2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 二層検出器スペクトラルCTを用いた dual-energy 心筋遅延造影2018

    • Author(s)
      尾田済太郎、榎本隆文、中浦猛、宇都宮大輔、木藤雅文、幸秀明、山下康行
    • Organizer
      第28回日本心血管画像動態学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 心拍数が冠動脈プラークの定量値に与える影響に関するファントム実験2018

    • Author(s)
      木藤雅文、宇都宮大輔、船間芳憲、坂部大介、中浦 猛、尾田済太郎、永山泰教、幸 秀明、平田健一郎、山下康行
    • Organizer
      第86回日本心臓血管放射線研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] クローン病の評価に2層検出器スペクトラルCTを用いたCT enterographyが有用であった一例2018

    • Author(s)
      伊牟田真功、田口奈留美、山下康行、土亀直俊
    • Organizer
      第1回日本消化管Virtual Reality学会総会・学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 冠動脈CTにおける多因子(撮影条件、体格)と冠動脈増強効果の関係についての多施設観察研究2017

    • Author(s)
      宇都宮大輔
    • Organizer
      第27回日本血管画像動態学会
    • Place of Presentation
      ホテルグリーンパーク津
    • Year and Date
      2017-01-20
    • Related Report
      2016 Research-status Report
  • [Presentation] 冠動脈CTAにおけるモデル型逐次近似再構成FIRST(Forward projected model-based lterative Reconstruction SoluTion)の影響2017

    • Author(s)
      平田健一郎
    • Organizer
      第27回日本血管画像動態学会
    • Place of Presentation
      ホテルグリーンパーク津
    • Year and Date
      2017-01-20
    • Related Report
      2016 Research-status Report
  • [Presentation] Hepatic fat quantification using automated six-point Dixon methods: comparison with conventional chemical shift based gradient-echo sequences and computed tomography2017

    • Author(s)
      T. Namimoto, K. Shimizu, M. Nakagawa, K. Hirata, S. Oda, T. Nakaura, D. Utsunomiya, Y Yamashita
    • Organizer
      ISMRM 25th Anuual Meeting & Exhibition
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Comparison of filtered back projection, hybrid-and model-based Iterative reconstructions: tradeoff between noise reduction and inartificial visualization2017

    • Author(s)
      Hirata.K, Utsunomiya.D, Oda.S, Yuki.H, Nakaura.T, Yamashita.Y
    • Organizer
      SCCT2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Dual-energy CT colonography using dual-layer spectral detector computed tomography: feasibility of virtual monochromatic imaging for electronic cleansing2017

    • Author(s)
      Taguchi.N, Oda.S, Imuta.M, Yamamura.S, Nakaura.T, Utsunomiya.D, Nagayama.Y, Funama.Y, Tsuchigame.T, Yamashita.Y
    • Organizer
      RSNA2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Virtual monochromatic image reconstruction with dual-layer spectral detector CT with 50% iodine load for hepatic dynamic CT: A matched-pair comparative study2017

    • Author(s)
      Nagayama.Y, Nakaura.T, Oda.S, Utsunomiya.D, Funama.Y, Iyama.Y, Taguchi.N, Yamashita.Y
    • Organizer
      RSNA2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Value of 100 kVp scan with SAFIRE on a single-source CT scanner during chest-abdominal-pelvic CT in oncologic assessment: An intraindividual feasibility study2017

    • Author(s)
      Nagayama.Y, Nakaura.T, Oda.S, Tsuji.A, Urata.J, Furusawa.M, Tanoue.S, Yamashita.Y
    • Organizer
      RSNA2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Brain Computed Tomography Using Iterative Reconstruction to Diagnose Acute Ischemic Stroke: Usefulness in Combination with Optimized Window Setting and Thin-Slice Reconstruction2017

    • Author(s)
      Inoue. T, Nakaura. T, Yoshida. M, Yokoyama. K, Uetani. H, Oda. S, Utsunomiya. D, Kitajima. M, Harada. K, Yamashita. Y
    • Organizer
      RSNA2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Reducing the radiation dose for CT colonography using forward projected model-based iterative reconstruction solution: preoperative assessment in patients with colorectal cancer2017

    • Author(s)
      田口奈留美、尾田済太郎、伊牟田真功、中浦 猛、宇都宮大輔、船間芳憲、幸 秀明、土亀直俊、山下康行
    • Organizer
      The 76th Annual Meeting of the Japan Radiological Society
    • Related Report
      2017 Research-status Report
  • [Presentation] Hepatic fat quantification using automated six-point Dixon of 3.0T magnetic resonance imaging: Comparison with chemical shift based sequences and CT2017

    • Author(s)
      浪本智弘、清水紀恵、中川雅貴、平田健一郎、尾田済太郎、中浦 猛、宇都宮大輔、山下康行
    • Organizer
      The 76th Annual Meeting of the Japan Radiological Society
    • Related Report
      2017 Research-status Report
  • [Presentation] Radiation dose reduction for adolescents head CT using 100-kVp and SAFIRE: Impact on grey-white matter contrast and image noise2017

    • Author(s)
      永山泰教、中浦 猛、辻 明徳、浦田譲治、古澤光浩、山下康行
    • Organizer
      The 76th Annual Meeting of the Japan Radiological Society
    • Related Report
      2017 Research-status Report
  • [Presentation] 内視鏡通過不能の進行大腸癌に対してCT colonographyが有用であった一例2017

    • Author(s)
      田口奈留美、伊牟田真功、馬場秀夫、土亀直俊、山下康行
    • Organizer
      第103回日本消化器内視鏡学会九州支部例会
    • Related Report
      2017 Research-status Report
  • [Presentation] Cardiac Four-dimensional(4D) vector analysis of myocardial infarction using an image-besed motion-estimation algorithm at coronary CT angionraphy2017

    • Author(s)
      Masafumi Kidoh, Daisuke Utsunomiya, Yoshinori Funama, Takeshi Nakaura, Seitaro Oda, Hideaki Yuki, Kenichiro Hirata, Toshihiro Fukui, Yasuyuki Yamashita, Katsuyuki Taguchi
    • Organizer
      ASCI2017
    • Related Report
      2017 Research-status Report
  • [Presentation] 冠動脈CTAにおける遂次再構成法による画質への影響2017

    • Author(s)
      平田健一郎、宇都宮大輔、幸 秀明、尾田済太郎、中浦 猛、山下康行
    • Organizer
      第85回日本心臓血管放射線研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] 頭部CTAにおけるFull-IR Forward projected model-based Iterative Reconstruction SoluTion(FIRST)の有用性2017

    • Author(s)
      上谷浩之、北島美香、永山泰教、尾田済太郎、宇都宮大輔、山下康行、中島 誠、矢野茂敏
    • Organizer
      第185回日本医学放射線学会九州地方会
    • Related Report
      2017 Research-status Report
  • [Presentation] 2層検出器スペクトラルCTを用いたCT colonographyの初期経験2017

    • Author(s)
      田口奈留美、伊牟田真功、尾田済太郎、山村定弘、村上晴彦、村田友佳、土亀直俊、山下康行
    • Organizer
      第25回日本消化器関連学会週間JDDW2017
    • Related Report
      2017 Research-status Report
  • [Presentation] 冠動脈CT angiographyを用いた機械学習による心臓虚血の予測の初期検討2017

    • Author(s)
      中浦 猛
    • Organizer
      第84回日本心臓血管放射線研究会
    • Place of Presentation
      ホテルグリーンパーク津
    • Related Report
      2016 Research-status Report
  • [Presentation] Hepatic Dynamic CT with lterative Reconstruction2016

    • Author(s)
      T.Nakaura
    • Organizer
      RSNA 102stScientificAssembly and Annual
    • Place of Presentation
      chicago
    • Year and Date
      2016-11-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Contrast Enhancement in abdominal CT: Comparison of the Different CT Scanners from Different Vendors; Phantom and Clinical Study2016

    • Author(s)
      N.Taguchi
    • Organizer
      RSNA 102stScientificAssembly and Annual Meeting
    • Place of Presentation
      chicago
    • Year and Date
      2016-11-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Meodel-Based Iterative Reconstruction Solution (FIRST) in Low-Dose CT Colonography: Preoperative Assessment in Patients with Colorectal Cancer2016

    • Author(s)
      N.Taguchi
    • Organizer
      RSNA 102stScientificAssembly and Annual Meeting
    • Place of Presentation
      chicago
    • Year and Date
      2016-11-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Current Role of CT Colonography in Preoperative Evaluation for Patients with Colorectal Cancer2016

    • Author(s)
      N.Taguchi
    • Organizer
      RSNA 102stScientificAssembly and Annual Meeting
    • Place of Presentation
      chicago
    • Year and Date
      2016-11-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cranial Bone-subtraction CT Angiography Using 80k Vp and Sinogram-Affirmed Iterative Reconstruction: Low Contrast Medium- and Low Radiation Dose Protocol2016

    • Author(s)
      Y.Nagayama
    • Organizer
      RSNA 102stScientificAssembly and Annual Meeting
    • Place of Presentation
      chicago
    • Year and Date
      2016-11-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] CT colonographyにおける表面型大腸腫瘍の検出能2016

    • Author(s)
      田口奈留美
    • Organizer
      第102回日本消化器内視鏡学会九州支部例会
    • Place of Presentation
      ホテル日航熊本
    • Year and Date
      2016-11-25
    • Related Report
      2016 Research-status Report
  • [Presentation] 大腸癌術前診断における低被ばくCT colonography;最新逐次近似再構成法の有用性2016

    • Author(s)
      田口奈留美
    • Organizer
      JDDW2016
    • Place of Presentation
      神戸コンベンションセンター
    • Year and Date
      2016-11-03
    • Related Report
      2016 Research-status Report
  • [Presentation] Clinical experience of new 320 row MDCT: Aquilion ONE Genesis-New MBIR(FIRST) and Clinical Application2016

    • Author(s)
      D.Utsunomiya
    • Organizer
      72nd Korean Congress of Radiology 2016
    • Place of Presentation
      Coex, Seoul, Korea
    • Year and Date
      2016-09-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 急性期脳梗塞に対する頭部CT用逐次近似再構成法 (IVR-Neuro) の有用性の検討2016

    • Author(s)
      中浦 猛
    • Organizer
      第75回日本医学放射線学会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2016-04-14
    • Related Report
      2016 Research-status Report
  • [Presentation] 肺癌術前の肺動静脈分離3D-CTにおける造影剤2相注入法の検討2016

    • Author(s)
      幸 秀明
    • Organizer
      第75回日本医学放射線学会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2016-04-14
    • Related Report
      2016 Research-status Report
  • [Presentation] 冠動脈内腔がプラークCT値へ及ぼす影響の検討2016

    • Author(s)
      木藤雅文
    • Organizer
      第75回日本医学放射線学会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2016-04-14
    • Related Report
      2016 Research-status Report
  • [Presentation] CT装置間におけるヨード造影剤の増強効果の差異に関する検討2016

    • Author(s)
      田口奈留美
    • Organizer
      第75回日本医学放射線学会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2016-04-14
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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