TY - GEN
T1 - Investigating the potential of acoustic resonance to estimate left ventricular volume
AU - Dual, Seraina Anne
AU - Dreyfus, Roland
AU - Roman, Cosmin Ioan
AU - Wampler, Richard
AU - Meboldt, Mirko
AU - Daners, Marianne Schmid
N1 - Publisher Copyright:
© Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019. All rights reserved.
PY - 2019
Y1 - 2019
N2 - 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).
AB - 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).
KW - Acoustics
KW - Cardiac volume
KW - Heart-assist devices
KW - Hemodynamic monitoring
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M3 - Conference contribution
AN - SCOPUS:85084015628
T3 - Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019
BT - Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019
PB - Canadian Acoustical Association
T2 - 26th International Congress on Sound and Vibration, ICSV 2019
Y2 - 7 July 2019 through 11 July 2019
ER -