Matthieu Lepetit-Coiffe1, Alexandru
Cernicanu2, Olivier Seror, 1,3, Thomas Stein4,
Yasmina Berber1, Mario Ries1, Chrit T. Moonen1,
Bruno Quesson1
1Laboratoire IMF CNRS UMR 5231 / Universite
Bordeaux 2, Bordeaux, France; 2Philips Healthcare, Suresnes,
France; 3Service de Radiologie, Hopital Jean Verdier, Bondy,
France; 4Celon/Olympus, Teltow, Germany
The
feasibility of real-time MR thermometry for monitoring multipolar RF ablation
was demonstrated both ex vivo and in vivo on a pig liver. The quality of the
real-time thermal dose maps appeared satisfactory in the presence of
respiratory motion and cyclic switching between the different pairs of RF
electrodes. The large (about 250 cm3) resulting thermal coagulation volume
was spatially homogeneous as predicted by the real-time lethal thermal dose
maps and confirmed by the post procedural MR imaging and histology.
Keywords