Investigating the potential of acoustic resonance to estimate left ventricular volume

Seraina Anne Dual, Roland Dreyfus, Cosmin Ioan Roman, Richard Wampler, Mirko Meboldt, Marianne Schmid Daners

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Irreversible long-term damage in patients suffering from cardiac disease could often be prevented with a timely intervention, provided that a decline in health status is noticed early. Measurement of left-ventricular (LV) volume is one possibility for monitoring the health status and could be done continuously if integrated in an implantable device i.e., pacemakers or blood pumps. Acoustic resonance is proposed as a measurement method for LV volume that is expected to be independent of the positioning of the sensor. We explore the potential of a resonant acoustic method with a pressure acoustic simulation. Two sets of simulations of extreme cases were carried out: the heart was 1) surrounded by air and 2) embedded in the thorax. The idealized heart was modelled as a blood-filled sphere surrounded by myocardium, pericardial fluid and embedded in an entirely muscular, cylindrical thorax. A pressure source excited the heart at LV volumes of 195 ±25% and ±50%. The independence of positioning was confirmed. The resonance frequency turns out to be sensitive to LV volume if surrounded by air (31 Hz/mL), but not as pronounced if embedded in the thorax (0.055 Hz/mL). Given the low sensitivity of the resonant acoustic method, future experiments focused on technical feasibility should be aimed at assessing the influence of lung parenchyma and noise

Original languageEnglish (US)
Title of host publicationProceedings of the 26th International Congress on Sound and Vibration, ICSV 2019
PublisherCanadian Acoustical Association
ISBN (Electronic)9781999181000
StatePublished - 2019
Event26th International Congress on Sound and Vibration, ICSV 2019 - Montreal, Canada
Duration: Jul 7 2019Jul 11 2019

Publication series

NameProceedings of the 26th International Congress on Sound and Vibration, ICSV 2019

Conference

Conference26th International Congress on Sound and Vibration, ICSV 2019
Country/TerritoryCanada
CityMontreal
Period7/7/197/11/19

Keywords

  • Acoustics
  • Cardiac volume
  • Heart-assist devices
  • Hemodynamic monitoring

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Fingerprint

Dive into the research topics of 'Investigating the potential of acoustic resonance to estimate left ventricular volume'. Together they form a unique fingerprint.

Cite this