Interactive Particle Tracing with Cumulative Blood Damage

Computation for Ventricular Assist Devices

Dennis Kempin, Peter Schumacher,

Gernot Ziegler, Tobias Rick

Abstract

DeBakeyVentricular Assist Device

Hydraulik

Hematologie

Motivation?

Arora et alA Tensor-Based Measure

for Estimating Blood Damage

Hentschel et alInteractive blood damage analysis for

ventricular assist devices

Goal:Fully interactive particle seeding

Technology

Implementation

Traditional SV

GPU based SV

Hemolysis

Tensor

Hemolysis

Eigenvectors

Velocity

Gradient

Reduce Complexity

Cartesian Grid

Lower level Integration

Frameskipping

Single-precision float

Specialized Eigensolver

Results

My Home Computer:

G96b = $50

65.000 particles

In realtime

Numeric Instabilities!

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

256 1024 4096 16384 65536

Tracing only Tracing with hemolysis

(million)Integrations per second

67

GPU Peak PerformanceGflops

9500GT

67 1700

GPU Peak PerformanceGflops

9500GT GTX 295

Improve Accuracy

Tetraedal Grid

Higher level Integration

Memory Streaming

Double-precision float

More accurate eigensolver

Thank you for your attention!

Any Questions?