Motion-robust blood perfusion sensing by LDF with focus control

Research output: Contribution to journalConference articlepeer-review


For endoscopic Laser Doppler flowmetry (LDF), motion artifacts present a serious challenge for clinical applications. We propose a motion-robust LDF method that eliminates motion artifacts by controlling the lens positon with a feedback signal representing tissue motion. This method could be applied to an endoscopic device with micro-electro-mechanical-systems (MEMS) technology. To demonstrate the feasibility of the proposed method, a bench-top apparatus was constructed, and a blood flow phantom was used as the measurement target. Experimental tests shows that the controlled lens was moved to the target position under phantom movement, and the detected perfusion signal were stabilized by the focus control.

Original languageEnglish
Pages (from-to)585-590
Number of pages6
JournalInternational Heat Transfer Conference
Publication statusPublished - 2018
Event16th International Heat Transfer Conference, IHTC 2018 - Beijing, China
Duration: 2018 Aug 102018 Aug 15


  • Bio and medical
  • Blood perfusion
  • Laser Doppler flowmety
  • Mass transfer
  • Measurement and instrumentation
  • Motion artifact

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


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