Publications by authors named "Paul Dryburgh"
Cardiac ultrasound simulation for autonomous ultrasound navigation.
Front Cardiovasc Med
August 2024
Article Synopsis
- - Ultrasound is a valuable imaging technique but its quality is highly dependent on the operator's skill, which is hard to train due to various factors like artifacts and patient differences. Automating image acquisition could enhance consistency and quality but involves collecting a lot of data which isn't typically saved.
- - The authors introduce a new method to create a large dataset of ultrasound images using data from other imaging modalities, optimized representation, and advanced simulation techniques. This approach allows them to produce patient-specific images to feed into machine learning algorithms.
- - The validation of this new method shows that it can successfully generate accurate ultrasound images, which can be used to train AI models for navigating and classifying echocardiography views, resulting in improved performance even with
In this work we employ additive manufacturing to print a circular array of micropillars on an aluminium slab turning its top surface into a graded index metasurface for surface acoustic waves (SAW). The graded metasurface reproduces a Luneburg lens capable of focusing plane SAWs to a point. The graded index profile is obtained by exploiting the dispersion properties of the metasurface arising from the well-known resonant coupling between the micropillars (0.
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- Crystalline lattice structures significantly influence materials' functional properties such as elasticity and magnetism, making orientation determination tools highly valuable.
- Surface acoustic wave (SAW) velocity measurements can effectively identify crystallographic orientations, particularly in cubic materials, but there's a need for improved methods in anisotropic crystals like hexagonal close packed titanium.
- The study combines experimental and simulation data to analyze the effects of different parameters on orientation accuracy, demonstrating that precise control can lead to errors in orientation determination being minimized to less than 1°, nearing theoretical limits.