LOURENÇO DE OLIVEIRA, Philippe; DENIS DE SENNEVILLE, Baudouin; DRAGONU, Iulius; MOONEN, Chrit

doi:10.1002/nbm.1526

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LOURENÇO DE OLIVEIRA, Philippe
Imagerie moléculaire et fonctionnelle: de la physiologie à la thérapie

DENIS DE SENNEVILLE, Baudouin
Institut de Mathématiques de Bordeaux [IMB]

DRAGONU, Iulius
Imagerie moléculaire et fonctionnelle: de la physiologie à la thérapie

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NMR in Biomedicine. 2010, vol. 23, n° 9, p. 1103–1108

Wiley

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The objective of this study was to evaluate the feasibility of integrating real-time ultrasound echo guidance in MR-guided high-intensity focused ultrasound (HIFU) heating of mobile targets in order to reduce latency between displacement analysis and HIFU treatment. Experiments on a moving phantom were carried out with MRI-guided HIFU during continuous one-dimensional ultrasound echo detection using separate HIFU and ultrasound imaging transducers. Excellent correspondence was found between MR-and ultrasound-detected displacements. Real-time ultrasound echo-based target tracking during MR-guided HIFU heating is shown with the dimensions of the heated area similar to those obtained for a static target. This work demonstrates that the combination of the two modalities opens up perspectives for motion correction in MRI-guided HIFU with negligible latency.< Réduire

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ultrasound echo

motion correction

real time

MRI

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Rapid motion correction in MR-guided high-intensity focused ultrasound heating using real-time ultrasound echo information

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