Power Doppler signal calibration between ultrasound machines by use of a capillary-flow phantom for pannus vascularity in rheumatoid finger joints

• Project/Area Number: 24591437
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: 膠原病・アレルギー・感染症内科学
• Research Institution: Hokkaido University
• Principal Investigator: KAMISHIMA Tamotsu 北海道大学, 保健科学研究院, 教授 (10399868)
• Co-Investigator(Kenkyū-buntansha): ATSUMI Tatsuya 北海道大学, 大学院医学研究科, 教授 (20301905) ; TERAE Satoshi 北海道大学, 大学院医学研究科, 准教授 (40240634) ; NISHIDA Mutsumi 北海道大学病院, 検査輸血部, 副技師長 (90404722)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2014: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: 関節超音波 / 関節リウマチ / 超音波 / 校正

Outline of Final Research Achievements

Ultrasound allows the detection and grading of inflammation in rheumatology. Despite these advantages of ultrasound in the management of rheumatoid patients, it is well known that there are significant machine-to-machine disagreements regarding signal quantification. In this study, we tried to calibrate the power Doppler (PD) signal of two models of ultrasound machines by using a capillary-flow phantom. In Aplio 500 and Avius, we found negative correlations between the PRF and the QPD index when the flow velocity was constant, and a positive correlation between flow velocity and the QPD index at constant PRF. The equation for the relationship of the PRF between Aplio 500 and Avius was: y = 0.023x + 0.36 [y = PRF of Avius (kHz), x = PRF of Aplio 500 (kHz)]. Our results suggested that the signal calibration of various models of ultrasound machines is possible by adjustment of the PRF setting.

Research Products

• [Journal Article] Power Doppler signal calibration between ultrasound machines using a capillary flow phantom for pannus vascularity in rheumatoid finger joints -a basic study (2015)
  • Author(s): Sakano R, Kamishima T, et al
  • Journal Title: Radiological Physics and Technology Volume: ８ Issue: 1 Pages: 120-4
  • DOI: 10.1007/s12194-014-0299-5
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Power Doppler signal calibration between ultrasound machines using a capillary flow phantom for pannus vascularity in rheumatoid finger joints -a basic study (2014)
  • Author(s): 坂野稜典
  • Organizer: 第70回日本放射線技術学会総会学術大会
  • Place of Presentation: パシフィコ横浜
  • Year and Date: 2014-04-01 – 2014-04-03
• [Presentation] Power Doppler signal calibration between ultrasound machines using a capillary flow phantom for pannus vascularity in rheumatoid finger joint -a basic study (2014)
  • Author(s): 坂野 稜典
  • Organizer: 日本放射線技術学会 第70回総会学術大会
  • Place of Presentation: パシフィコ横浜（横浜市）
• [Remarks] 神島研究室ホームページ
  • URL: http://www.hs.hokudai.ac.jp/kamishima/index.html