Cavitation-enhanced back projection for acoustic detection of attenuating structures

Pascal Ramaekers, Martijn De Greef, Chrit T.W. Moonen, Mario Ries

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Current methodology for the detection of attenuating structures in abdominal HIFU interventions requires lengthy, elaborate image analysis, which is undesired in a clinical setting. In this work, a method for the acoustic detection of attenuating structures in the beam path of the therapeutic HIFU array is described. The proposed method is used to determine binary apodizations that can be applied to the HIFU transducer for intercostal shot positions. Such a binary apodization was determined in vivo on an anesthetized pig under controlled breathing. Validation of the proposed method was done by comparing the binary apodization based on the proposed method to a binary apodization obtained using methodology based on MR image analysis and a collision detection algorithm. The proposed acoustical method provided a binary apodization that was over 90% similar to the apodization obtained using the image analysis-based method. Additionally, the proposed method can provide a measure of the amount of attenuation that each respective transducer element encounters in its beam path towards the focus.

Original languageEnglish
Title of host publicationProceedings from the 14th International Symposium on Therapeutic Ultrasound, ISTU 2014
EditorsJ. Brian Fowlkes, Vasant A. Salgaonkar
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735414891
DOIs
Publication statusPublished - 17 Mar 2017
Externally publishedYes
Event14th International Symposium on Therapeutic Ultrasound, ISTU 2014 - Las Vegas, United States
Duration: 2 Apr 20145 Apr 2014

Publication series

NameAIP Conference Proceedings
Volume1821
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference14th International Symposium on Therapeutic Ultrasound, ISTU 2014
Country/TerritoryUnited States
CityLas Vegas
Period2/04/145/04/14

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