Robust GPU-based virtual reality simulation of radio-frequency ablations for various needle geometries and locations

  • Niclas Kath
  • Heinz Handels
  • Andre MastmeyerEmail author
Original Article



Radio-frequency ablations play an important role in the therapy of malignant liver lesions. The navigation of a needle to the lesion poses a challenge for both the trainees and intervening physicians.


This publication presents a new GPU-based, accurate method for the simulation of radio-frequency ablations for lesions at the needle tip in general and for an existing visuo-haptic 4D VR simulator. The method is implemented real time capable with Nvidia CUDA.


It performs better than a literature method concerning the theoretical characteristic of monotonic convergence of the bioheat PDE and a in vitro gold standard with significant improvements (\(p<0.05\)) in terms of Pearson correlations. It shows no failure modes or theoretically inconsistent individual simulation results after the initial phase of 10 s. On the Nvidia 1080 Ti GPU, it achieves a very high frame rendering performance of > 480 Hz.


Our method provides a more robust and safer real-time ablation planning and intraoperative guidance technique, especially avoiding the overestimation of the ablated tissue death zone, which is risky for the patient in terms of tumor recurrence. Future in vitro measurements and optimization shall further improve the conservative estimate.


Virtual reality simulation Radio-frequency ablation Surgery training Surgery planning Needle interventions 



Funding was provided by DFG: MA 6791/1-1; Nvidia GPU Grant 2018 (Mastmeyer).

Compliance with ethical standards

Conflict of interest

The authors declare no conflicts of interest.


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Copyright information

© CARS 2019

Authors and Affiliations

  1. 1.Institute of Medical InformaticsUniversity of LübeckLübeckGermany

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