Multiphysics modeling toward enhanced guidance in hepatic microwave ablation: a preliminary framework

Jarrod A. Collins; Jon S. Heiselman; Logan W. Clements; Daniel B. Brown; Michael I. Miga

doi:10.1117/1.JMI.6.2.025007

20 May 2019 Multiphysics modeling toward enhanced guidance in hepatic microwave ablation: a preliminary framework

Jarrod A. Collins, Jon S. Heiselman, Logan W. Clements, Daniel B. Brown, Michael I. Miga

Author Affiliations +

Journal of Medical Imaging, Vol. 6, Issue 2, 025007 (May 2019). https://doi.org/10.1117/1.JMI.6.2.025007

Abstract

We compare a surface-driven, model-based deformation correction method to a clinically relevant rigid registration approach within the application of image-guided microwave ablation for the purpose of demonstrating improved localization and antenna placement in a deformable hepatic phantom. Furthermore, we present preliminary computational modeling of microwave ablation integrated within the navigational environment to lay the groundwork for a more comprehensive procedural planning and guidance framework. To achieve this, we employ a simple, retrospective model of microwave ablation after registration, which allows a preliminary evaluation of the combined therapeutic and navigational framework. When driving registrations with full organ surface data (i.e., as could be available in a percutaneous procedure suite), the deformation correction method improved average ablation antenna registration error by 58.9% compared to rigid registration (i.e., 2.5 ± 1.1 mm, 5.6 ± 2.3 mm of average target error for corrected and rigid registration, respectively) and on average improved volumetric overlap between the modeled and ground-truth ablation zones from 67.0 ± 11.8 % to 85.6 ± 5.0 % for rigid and corrected, respectively. Furthermore, when using sparse-surface data (i.e., as is available in an open surgical procedure), the deformation correction improved registration error by 38.3% and volumetric overlap from 64.8 ± 12.4 % to 77.1 ± 8.0 % for rigid and corrected, respectively. We demonstrate, in an initial phantom experiment, enhanced navigation in image-guided hepatic ablation procedures and identify a clear multiphysics pathway toward a more comprehensive thermal dose planning and deformation-corrected guidance framework.

Citation Download Citation

Jarrod A. Collins, Jon S. Heiselman, Logan W. Clements, Daniel B. Brown, and Michael I. Miga "Multiphysics modeling toward enhanced guidance in hepatic microwave ablation: a preliminary framework," Journal of Medical Imaging 6(2), 025007 (20 May 2019). https://doi.org/10.1117/1.JMI.6.2.025007

Received: 28 December 2018; Accepted: 23 April 2019; Published: 20 May 2019

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