HIFU – 3D Tissue Maps
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HIFU – 3D TISSUE MAPS
Introduction
o Calculating the thermal dose delivered by therapeutic treatments is dependant
on many factors, and can be a complex process
o PZFlex combines piezoelectric, acoustic, and thermal solvers to allow a true multiphysics analysis of large problems
o This process can be accelerated using the new MPI module, turning round results
even faster than before
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HIFU – 3D TISSUE MAPS
PZFlex Capabilities
o PZFlex is ideally suited for HIFU work, providing the following:
o Non-linear time domain analysis
o Load complex tissue maps from CAD or images
o Coupled electromechanical analysis of transducers
o Coupled or un-coupled thermal analysis
o Model acceleration via MPI
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HIFU – 3D TISSUE MAPS
Tissue Map Importation
o Import tissue maps from CAD or image data directly to model
Image of human abdomen, courtesy of The US
National Library of Medicine's Visible Human
project:
http://www.nlm.nih.gov/research/visible/visib
le_human.html
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Imported PZFlex material map
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HIFU – 3D TISSUE MAPS
3D Analysis
o PZFlex can handle models with over 1 billion elements, allowing
treatments to be simulated in full 3D
3D Model of abdomen section meshed for
200kHz with 40 million elements
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HIFU – 3D TISSUE MAPS
Acoustic Solve
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HIFU – 3D TISSUE MAPS
Acceleration Using MPI
o MPI can be used to split models across multiple cores, and is much more
efficient than traditional multithreaded execution
o This example shows an
acoustic model split into 16
slices
o Speed increases of over 10x
have been demonstrated
using MPI
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SIMULATION METRICS
PZFlex combines multiphysics capabilities with unprecedented speed to
allow 3D simulation of treatments on standard desktop hardware
Model
2D Model
3D Model
Elements
1,400,000
40,000,000
Runtime
Memory
(RAM)
2 mins 22 s* 1 hr 15 mins*
205 MB
4.30 GB
* Run on Dell Precision Tower 7810
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