Abstract #1633
Fast simultaneous temperature and displacement imaging during HIFU ablation in swine liver
Pierre Bour 1 , Fabrice Marquet 1 , Solenn Toupin 1,2 , Matthieu Lepetit-coiff 2 , and Bruno Quesson 1
1
L'Institut de RYthmologie et de Modlisation
Cardiaque, Bordeaux, Aquitaine, France,
2
SIEMENS-Healthcare,
Saint-Denis, le-de-France, France
MR guided HIFU allows non-invasive thermal ablation of
soft tissues. This abstract proposes to monitor
simultaneously temperature and displacement induced at
the focus with sub-second sequence integrating a bipolar
gradient with alternating polarities and a synchronized
blank of the HIFU sonication. This method has been
validated ex vivo and applied in vivo on swine liver:
During sonication a decrease of measured displacement
along with an increase of temperature was measured. This
method allows measurements of changes of mechanical
properties of targeted tissue that could give additional
relevant information on the extent of the induced
lesion.
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