Pierre Bour1,2, Fabrice Marquet2, Fanny Vaillant2, Valery Ozenne2, Solenn Toupin2,3, Matthieu Lepetit coiffe3, Erik Dumont1, and Bruno Quesson2
1IGT, PESSAC, France, 2IHU-LIRYC, PESSAC, France, 3Siemens Healthcare, Saint-Denis, France
stimulation may enable diagnostic and therapeutic applications such as
noninvasive electrophysiological exam, emergency care and temporary stimulation.
In-vivo proof of concept of HIFU cardiac stimulation has already been done on
pig. We propose here a first proof of feasibility to monitor the
displacement induced by acoustic radiation force impulse (MR-ARFI) during contactless
stimulation ex-vivo, on a beating pig
heart model. ARFI
displacement maps will be used for precise localization of the depolarization source
and a quantification of displacement will be done during refractory
(contraction) and non-refractory (resting time) period.