Quantification and Visualization of Reliable Hemodynamics Evaluation Based on Non-Contact Arteriovenous Fistula Measurement

Rumi Iwai, Takunori Shimazaki, Yoshifumi Kawakubo, Kei Fukami, Shingo Ata, Takeshi Yokoyama, Takashi Hitosugi, Aki Otsuka, Hiroyuki Hayashi, Masanobu Tsurumoto, Reiko Yokoyama, Tetsuya Yoshida, Shinya Hirono, Daisuke Anzai

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The condition of arteriovenous fistula (AVF) blood flow is typically checked by using auscultation; however, auscultation should require a qualitative judgment dependent on the skills of doctors, and further attention to contact infection is required. For these reasons, this study developed a non-contact and non-invasive medical device to measure the pulse wave of AVFs by applying optical imaging technology. As a first step toward realization of the quantification judgment based on non-contact AVF measurement, we experimentally validated the developed system, whereby the hemodynamics of 168 subjects were visually and quantitatively evaluated based on clinical tests. Based on the evaluation results, the fundamental statistical characteristics of the non-contact measurement, including the average and median values, and distribution of measured signal-to-noise power ratio, were demonstrated. The clinical test results contributed to the future construction of quantified criteria for the AVF condition with the non-contact measurement.

Original languageEnglish
Article number2745
Issue number7
Publication statusPublished - Apr 1 2022

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Information Systems
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering


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