Real-Time Ultrasoundsimulation for Medical Training

Bürger, Benny

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URN: urn:nbn:de:bsz:180-madoc-388764
Document Type: Doctoral dissertation
Year of publication: 2014
Place of publication: Mannheim
University: Universität Mannheim
Evaluator: Hesser, Jürgen
Date of oral examination: 27 May 2015
Publication language: German
Institution: Außerfakultäre Einrichtungen > Sonstige - Außerfakultäre Einrichtungen
School of Business Informatics and Mathematics > Praktische Informatik IV (Effelsberg 1989-2017)
Subject: 004 Computer science, internet
Subject headings (SWD): Ultraschall , Simulator , Simulation , Echtzeit , Ray tracing , Graphikkarte , CUDA <Informatik> , Ultraschalldiagnostik , Brachytherapie
Keywords (English): Ultrasound , Simulation , Ray-Tracing , GPGPU , CUDA , Brachytherapy , Real-Time , Medical , Simulator
Abstract: Abstract: This thesis presents a real-time capable GPU-based ultrasound simulator suitable for medical education. The main focus of the simulator is to synthesize realistic looking ultrasound images in real-time including artifacts, which are essential for the interpretation of this data. The simulation is based on a convolution-enhanced ray-tracing approach and uses a deformable meshmodel. Our method advances the state of the art for real-time capable ultrasound simulators by following the path of the ultrasound pulse, which enables better simulation of ultrasound-specific artifacts. An evaluation of our proposed method in comparison with recent generative slicing-based strategies as well as real ultrasound images is performed. Hereby, a gelatin ultrasound phantom containing syringes filled with different media is scanned with a real transducer. The obtained images are then compared to images which are simulated using a slicing-based technique and our proposed method. The particular benefit of our method is the accurate simulation of ultrasound-specific artifacts, like range distortion, refraction and acoustic shadowing.
Additional information: Titel engl., Text dt.

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