Passive Acoustic Mapping for ultrasound therapy monitoring

Passive Acoustic Mapping (PAM) is an ultrasoundbased imaging method developed for monitoring therapeutic ultrasound. By using diagnostic transducers to passively record the acoustic signals that are emitted by cavitation bubbles, the origin of the bubbles can be reconstructed and displayed as intens...

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Main Authors: Therre Sarah, Bost Wolfgang, Hewener Holger, Tretbar Steffen, Fournelle Marc
Format: Article
Language:English
Published: De Gruyter 2021-10-01
Series:Current Directions in Biomedical Engineering
Subjects:
Online Access:https://doi.org/10.1515/cdbme-2021-2111
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author Therre Sarah
Bost Wolfgang
Hewener Holger
Tretbar Steffen
Fournelle Marc
author_facet Therre Sarah
Bost Wolfgang
Hewener Holger
Tretbar Steffen
Fournelle Marc
author_sort Therre Sarah
collection DOAJ
description Passive Acoustic Mapping (PAM) is an ultrasoundbased imaging method developed for monitoring therapeutic ultrasound. By using diagnostic transducers to passively record the acoustic signals that are emitted by cavitation bubbles, the origin of the bubbles can be reconstructed and displayed as intensity maps. In this study, two matrix arrays with different aperture sizes were used for the volumetric reconstruction of simulated and experimental data. In a second step, the number of elements being used for the reconstruction was reduced by more than the factor of eight in order to assess the influence on the imaging quality. In the numerical part of the study, the image quality was greatly improved by increasing the aperture size, while a high number of elements used for the reconstruction merely offers minor improvements. The experimentally obtained results were able to confirm the numerical findings regarding the achievable reconstruction quality.
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spelling doaj.art-31b54c14c9e547348b92bfa739caf8e52022-12-22T03:28:08ZengDe GruyterCurrent Directions in Biomedical Engineering2364-55042021-10-017243744010.1515/cdbme-2021-2111Passive Acoustic Mapping for ultrasound therapy monitoringTherre Sarah0Bost Wolfgang1Hewener Holger2Tretbar Steffen3Fournelle Marc4Fraunhofer Institute for Biomedical Engineering,Sulzbach/Saar, GermanyFraunhofer Institute for Biomedical Engineering,Sulzbach/Saar, GermanyFraunhofer Institute for Biomedical Engineering,Sulzbach/Saar, GermanyFraunhofer Institute for Biomedical Engineering,Sulzbach/Saar, GermanyFraunhofer Institute for Biomedical Engineering (IBMT), Joseph-von-Fraunhofer-Weg 1, 66280Sulzbach/Saar, GermanyPassive Acoustic Mapping (PAM) is an ultrasoundbased imaging method developed for monitoring therapeutic ultrasound. By using diagnostic transducers to passively record the acoustic signals that are emitted by cavitation bubbles, the origin of the bubbles can be reconstructed and displayed as intensity maps. In this study, two matrix arrays with different aperture sizes were used for the volumetric reconstruction of simulated and experimental data. In a second step, the number of elements being used for the reconstruction was reduced by more than the factor of eight in order to assess the influence on the imaging quality. In the numerical part of the study, the image quality was greatly improved by increasing the aperture size, while a high number of elements used for the reconstruction merely offers minor improvements. The experimentally obtained results were able to confirm the numerical findings regarding the achievable reconstruction quality.https://doi.org/10.1515/cdbme-2021-2111passive acoustic mappingultrasound therapy monitoringcavitation localization
spellingShingle Therre Sarah
Bost Wolfgang
Hewener Holger
Tretbar Steffen
Fournelle Marc
Passive Acoustic Mapping for ultrasound therapy monitoring
Current Directions in Biomedical Engineering
passive acoustic mapping
ultrasound therapy monitoring
cavitation localization
title Passive Acoustic Mapping for ultrasound therapy monitoring
title_full Passive Acoustic Mapping for ultrasound therapy monitoring
title_fullStr Passive Acoustic Mapping for ultrasound therapy monitoring
title_full_unstemmed Passive Acoustic Mapping for ultrasound therapy monitoring
title_short Passive Acoustic Mapping for ultrasound therapy monitoring
title_sort passive acoustic mapping for ultrasound therapy monitoring
topic passive acoustic mapping
ultrasound therapy monitoring
cavitation localization
url https://doi.org/10.1515/cdbme-2021-2111
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AT hewenerholger passiveacousticmappingforultrasoundtherapymonitoring
AT tretbarsteffen passiveacousticmappingforultrasoundtherapymonitoring
AT fournellemarc passiveacousticmappingforultrasoundtherapymonitoring