A model based approach to in vivo ultrasound temperature estimation

Mahdi Bayat, John R. Ballard, Alyona Haritonova, Elias Wilken-Resman, Emad S Ebbini

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

Abstract

A model based technique for echo shift-based ultrasound temperature estimation is presented. First, the dynamic model is derived from direct discretization of the Pennes' bio-heat equation. This model is then used in a Kalman filter setting for temperature tracking using the incremental temperature changes acquired at each discrete grid point as the measurements. In addition to tissue heterogeneity, natural motions and deformations during in vivo ultrasound thermography play a significant role in degrading the performance of the ultrasound thermography. Using the model based approach, we present the results of temperature estimation during sub-therapeutic high intensity focus ultrasound (HIFU) shots in the hind limb of Copenhagen rats in vivo. The results show continuous tracking of the temperature via pure prediction during significant error cycles or displacement tracking failure. These results represent an early validation of a fully adaptive spatial-temporal filtering of thermography data to compensate for tissue motions and deformations in vivo.

Original languageEnglish (US)
Title of host publicationIEEE International Ultrasonics Symposium, IUS
PublisherIEEE Computer Society
Pages2149-2152
Number of pages4
ISBN (Electronic)9781479970490
DOIs
StatePublished - Oct 20 2014
Event2014 IEEE International Ultrasonics Symposium, IUS 2014 - Chicago, United States
Duration: Sep 3 2014Sep 6 2014

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Other

Other2014 IEEE International Ultrasonics Symposium, IUS 2014
CountryUnited States
CityChicago
Period9/3/149/6/14

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