Study on radiation dose reduction using iterative reconstruction technique in CT

• Project/Area Number: 23591777
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Radiation science
• Research Institution: Kumamoto University
• Principal Investigator: FUNAMA Yoshinori 熊本大学, 生命科学研究部, 教授 (30380992)
• Co-Investigator(Kenkyū-buntansha): AWAI Kazuo 広島大学, 大学院医歯薬保健学研究院, 教授 (30294573)
• Co-Investigator(Renkei-kenkyūsha): ODA Seitaro 熊本大学, 大学院生命科学研究部, 助教 (80571041)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: CT / 逐次近似法 / フィルタ逆投影法 / 線量低減 / 画質

Research Abstract

With respect to reduction technique of radiation dose in CT using iterative reconstruction (IR) algorithm, we compared IR with widely used filtered back projection (FBP) algorithms and dealt with usefulness of IR algorithm. Especially, we focused on diagnostic acceptability at cardiac region; studied improving in-stent lumen visualization and automatic tube current modulation (ATCM) technique in terms of basic and clinical researches.

Research Products

• [Journal Article] Automatic exposure control at single- and dual-heartbeat CTCA on a 320-MDCT volume scanner: Effect of heart rate, exposure phase window setting, and reconstruction algorithm. (2014)
  • Author(s): Funama Y et al.
  • Journal Title: Physica Medica (European journal of medical physics) Volume: 30 Issue: 3 Pages: 385-390
  • DOI: 10.1016/j.ejmp.2013.10.003
  • Peer Reviewed
• [Journal Article] Reduction in radiation and contrast medium dose via optimization of low-kilovoltage CT protocols using a hybrid iterative reconstruction algorithm at 256-slice body CT: phantom study and clinical correlation. (2013)
  • Author(s): Itatani R, Oda S, Utsunomiya D, Funama Y et al.
  • Journal Title: Clinical Radiology Volume: 68 Issue: 3 Pages: e128-e135
  • DOI: 10.1016/j.crad.2012.10.014
  • Peer Reviewed
• [Journal Article] Improved coronary in-stent visualization using a combined high-resolution kernel and a hybrid iterative reconstruction technique at 256-slice cardiac CT-pilot study (2013)
  • Author(s): Oda S, Utsunomiya D, Funama Y et al.
  • Journal Title: European Journal of Radiology Volume: 82 Issue: 2 Pages: 288-295
  • DOI: 10.1016/j.ejrad.2012.11.003
  • Peer Reviewed
• [Journal Article] Coronary artery stent evaluation by combining iterative reconstruction and high-resolution kernel at coronary CT angiography (2012)
  • Author(s): Funama Y, Oda S, Awai K, et al
  • Journal Title: Academic Radiology Volume: 19 (Epub 2012 Aug28) Issue: 11 Pages: 1324-1331
  • DOI: 10.1016/j.acra.2012.06.013
  • Peer Reviewed
• [Journal Article] Combination of a low-tube-voltage technique with hybriditerative reconstruction(iDose) algorithm atcoronary computed tomographic angiography (2011)
  • Author(s): Funama Y, Taguchi K, Utsunomiya D, Oda S, Yanaga Y, Yamashita Y, Awai K
  • Journal Title: JComput Assist Tomogr Volume: 35 Issue: 4 Pages: 480-485
  • DOI: 10.1097/rct.0b013e31821fee94
  • Peer Reviewed
• [Presentation] Radiation reduction at single-heartbeat coronary CT angiography combined with automatic exposure control and iterative reconstruction at 320-MDCT volume scanning (2013)
  • Author(s): Funama Y
  • Organizer: Radiological Society of North America (RSNA) annual meeting
  • Place of Presentation: Chicago
  • Year and Date: 2013-12-01
• [Presentation] Radiation reduction at single-heartbeat coronary CT angiography combined with automatic exposure control and iterative reconstruction at 320-MDCT volume scanning (2013)
  • Author(s): Funama Y et al.
  • Organizer: Radiological Society of North America (RSNA) annual meeting
  • Place of Presentation: McCormick Place, Chicago,USA
• [Presentation] Investigation of a hybrid iterative reconstruction technique for reduction of coronary stent blooming artifact in coronary CT angiography (2012)
  • Author(s): Funama Y
  • Organizer: Radiological Society of North America(RSNA) annual meeting
  • Place of Presentation: Chicago
  • Year and Date: 2012-11-29
• [Presentation] Specific reduction of breast dose with high-tube voltage and iterative reconstruction at non-enhanced low-dose chest CT (2012)
  • Author(s): Noto D
  • Organizer: Radiological Society of North America (RSNA) annual meeting
  • Place of Presentation: Chicago
  • Year and Date: 2012-11-25
• [Presentation] Specific reduction of breast dose with high-tube voltage and iterative reconstruction at non-enhanced low-dose chest CT (2012)
  • Author(s): Noto D, Funama Y, et al.
  • Organizer: Radiological Society of North America (RSNA) annual meeting
  • Place of Presentation: McCormick Place, Chicago,USA
• [Presentation] A virtually noise-free iterative reconstruction algorithm that improves the image quality atlow radiation dose for cardiac CT (2012)
  • Author(s): Oda S, Utsunomiya D, Funama Y et al.
  • Organizer: Radiological Society of North America (RSNA) annual meeting
  • Place of Presentation: McCormick Place, Chicago,USA
• [Presentation] Investigation of a Hybrid Iterative (2011)
  • Author(s): Funama Y et al.
  • Organizer: Radiological Society of North America (RSNA)
  • Place of Presentation: Chicago, USA