Adaptive motion compensation for in vivo ultrasound temperature estimation

Mahdi Bayat, John R. Ballard, Emad S Ebbini

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

6 Scopus citations

Abstract

Recent works have shown promising results in in vivo temperature estimation using diagnostic ultrasound. By applying speckle tracking algorithm on the M2D images taken by a diagnostic probe positioned in the fenestration of a Dual Mode Ultrasound Array (DMUA), localized temperature changes during sub-therapeutic High Intensity Focused Ultrasound (HIFU) operation can be detected. However, interference from natural motion and deformation of the tissue could result in severe errors in the estimated temperature profiles. Two-dimensional filtering inspired by the bio-heat equation was shown to partially mitigate these effects, but it is ineffective when the spatial frequencies of the deformations are within the same bandwidth of the temperature-induced strains. We present results of a new adaptive technique which is capable of largely suppressing the interference without sacrificing the dynamics of the temperature change. The method is based on finding points with strong deformation induced strains outside the targeted region before the therapy starts and training an adaptive filter with the signals from these points as it inputs. During the therapy, the strain data from selected points and trained coefficients are used to suppress the effect of natural motions using a spatial interference cancellation filter.

Original languageEnglish (US)
Title of host publication2013 IEEE International Ultrasonics Symposium, IUS 2013
Pages1797-1800
Number of pages4
DOIs
StatePublished - Dec 1 2013
Event2013 IEEE International Ultrasonics Symposium, IUS 2013 - Prague, Czech Republic
Duration: Jul 21 2013Jul 25 2013

Publication series

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

Other

Other2013 IEEE International Ultrasonics Symposium, IUS 2013
CountryCzech Republic
CityPrague
Period7/21/137/25/13

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