A novel 3D ultrasound thermometry method for HIFU ablation using an ultrasound element

Younsu Kim, Chloe Audigier, Nicholas Ellens, Emad Boctor

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

Abstract

High intensity focused ultrasound (HIFU) is a non-invasive thermal ablation technique. To perform the ablation procedure safely, temperature monitoring is employed to preserve healthy tissues while simultaneously ensuring that the targeted region is completely ablated. Ultrasound (US) thermometry techniques have the advantages of cost-effectiveness and portability over other medical imaging modalities such as MRI. We propose a 3D US thermal monitoring method for HIFU ablation. A US element and sampling device are used to acquire time-of-flight (TOF) information, from which we reconstruct speed of sound (SOS) images to detect the temperature increase during the ablation. We use a physics-based HIFU simulation to segment the ablated region of interest (ROI) to cope with the sparsity of the recorded data. HIFU thermal ablations were performed under MR monitoring on a phantom and the results from the proposed method were compared with MR thermometry. On average, the difference between those two datasets was 1.3°C in the ROI around the ablation focal point, which verifies the feasibility of the proposed method.

Original languageEnglish (US)
Title of host publication2017 IEEE International Ultrasonics Symposium, IUS 2017
PublisherIEEE Computer Society
ISBN (Electronic)9781538633830
DOIs
StatePublished - Oct 31 2017
Event2017 IEEE International Ultrasonics Symposium, IUS 2017 - Washington, United States
Duration: Sep 6 2017Sep 9 2017

Other

Other2017 IEEE International Ultrasonics Symposium, IUS 2017
CountryUnited States
CityWashington
Period9/6/179/9/17

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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