Acousto-electrical speckle pattern in Electrical Impedance Tomography

Author

Grasland-Mongrain, Pol ; Destrempes, Francois ; Mari, Jean-Martial ; Souchon, Remi ; Catheline, Stefan ; Chapelon, Jean-Yves ; Lafon, Cyril ; Cloutier, Guy

Author_Institution

Lab. de Biorheologie et d´Ultrasonographie Medicale, Univ. de Montreal, Montréal, QC, Canada

fYear

2014

fDate

3-6 Sept. 2014

Firstpage

221

Lastpage

223

Abstract

Lorentz Force Electrical Impedance Tomography (LFEIT) is a medical imaging technique of the tissue electrical impedance. It is based on the transmission of an ultrasound beam in a medium placed in a magnetic field, which induces an electrical current due to Lorentz force. The measurement of this current with electrodes allows to produce electrical impedance images with a spatial resolution close to ultrasound (US) imaging. The goal of this study is to assess the existence of an “acousto-electric speckle” in the LFEIT technique, by similarity to the US speckle.

Keywords

bioelectric phenomena; biological tissues; biomedical electrodes; biomedical transducers; biomedical ultrasonics; electric impedance imaging; phantoms; LFEIT; Lorentz force electrical impedance tomography; acousto-electrical speckle pattern; electrical impedance images; electrodes; frequency 500 kHz; gelatin phantom; medical imaging technique; spatial resolution; tissue electrical impedance; transducer; ultrasound beam transmission; ultrasound imaging; ultrasound wave; Acoustics; Imaging; Impedance; Lorentz covariance; Magnetoacoustic effects; Speckle; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2014 IEEE International

Conference_Location

Chicago, IL

Type

conf

DOI

10.1109/ULTSYM.2014.0056

Filename

6932287