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Communication Dans Un Congrès Année : 2022

A robust motion compensation algorithm for volumetric MR-temperature monitoring during microwave ablation of liver tumor in patients

Pierre Bour
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  • PersonId : 1332457
Thibaut Faller
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Osman Öcal
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  • PersonId : 1332458
Sergio Lentini
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  • PersonId : 1332927
Max Seidensticker
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  • PersonId : 1332459
Olaf Dietrich
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  • PersonId : 1332460

Résumé

Micro-wave tumor ablation (MWA) in the liver could benefit from magnetic resonance guidance that enable real-time temperature and lesion size monitoring during the energy delivery. Nevertheless, motion of abdominal organs causes significant challenges [2] and can be addressed either by synchronizing the acquisition with the physiological motion or by acquiring continuously the acquisition and compensating for the effect of displacement on magnitude and phase images using additional image processing method. In such context, local intensity changes during MWA ablation (due to changes in tissue properties with heating) may be interpreted as motion and lead to local erroneous displacement vector fields, which can compromise MR temperature mapping. We investigate the use of a novel motion compensation algorithm during liver tumor ablation. The performance of the method was retrospectively evaluated on experimental images under gated conditions.
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Dates et versions

hal-04379388 , version 1 (09-01-2024)

Identifiants

  • HAL Id : hal-04379388 , version 1

Citer

Valéry Ozenne, B. Quesson, Pierre Bour, Thibaut Faller, Osman Öcal, et al.. A robust motion compensation algorithm for volumetric MR-temperature monitoring during microwave ablation of liver tumor in patients. 13th Interventional MRI Symposium, Oct 2022, Leipzig, Germany. ⟨hal-04379388⟩
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