Applicator High-Frequency-ablation Simulation Temperature Distribution
© Fraunhofer MEVIS

Thermal Ablation Simulation

Looking for methods to improve planning and guidance of thermal ablation procedures for your customers and clinical partners? We offer a thermal ablation simulation library (TAS) capable of predicting the patient-individual ablation result. The simulation library can be enhanced by integrating details of the ablation hardware to be supported like generator protocols and sensors. The library supports integration into existing software solutions or combination with our Software Assistant for Interventional Radiology - SAFIR. We support validation for clinical use cases and can equip the library with documentation required for FDA clearance and CE labeling with our ISO13485 compliant quality management system.

Features

Heat solver

  • Pennes bioheat equation
  • Multicore- and GPU-acceleration
  • Incorporation of different heat sources
  • Incorporation of needle cooling
  • Spatially resolved, state dependent material properties
  • Incorporation of heat sink effects due to vasculature
  • Necrosis estimation based on Arrhenius formalism or CEM43
  • Vaporisation model
  • Freezing model
  • Evaluation of temperature profiles over time
  • Initialization with arbitrary temperature distribution

RFA

  • Electrostatic approximation of RF energy delivery
  • Spatially resolved and state dependent electric conductivity
  • RF-generator control using impedance and temperature
  • Coupling with heat solver

MWA

  • Electrodynamic simulation and electrostatic approximation of MW energy delivery
  • Spatially resolved and state dependent electric conductivity, permittivity, and permeability
  • MW-generator control using temperature
  • Coupling with heat solver

LITT

  • Heat source via simulation of laser-tissue interaction
  • Spatial resolved, state dependent optical absorption and optical scattering
  • Laser power control based on temperature evaluation
  • Coupling with heat solver

FUS / HIFU

  • Efficient sound propagation with improved hybrid  angular spectrum approach
  • Arbitrary transducer geometries and element configurations
  • Focusing strategies to spare risk structures
  • Motion compensation
  • Coupling with heat solver

Cryo Ablation

  • Freeze-Thaw-Cycles
  • Variable cooling temperature
  • Necrosis estimation using freezing temperature and time thresholds
  • Coupling with heat solver