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Fall 2014
Optical imaging has long been a gold standard for medical imaging. However, due to the high optical scattering in tissues, it has not been possible to image deeper than a few wavelengths with a useful resolution. Photoacoustic imaging - the use of short-pulsed lasers to induce an ultrasound...
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Novel 3D Ultrasound Imaging Techniques Using Top-Orthogonal-to-Bottom-Electrode (TOBE) Arrays
DownloadFall 2019
Ultrasound imaging is a safe, affordable and reliable diagnostic tool widely used in medical professions. While 2D ultrasound imaging is used extensively in clinical environments, 3D ultrasound imaging has not yet seen wide clinical acceptance. This is partly due to the practical limitations on...
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Top-Orthogonal-to-Bottom-Electrode Capacitive Micromachined Ultrasound Transducers for Low-Cost 3D Ultrasound Imaging
DownloadFall 2013
Capacitive micromachined ultrasound transducers (CMUTs) offer a promising solution for three-dimensional ultrasound imaging due to their ability to be easily fabricated in two-dimensional arrays. However, channel routing is still non-trivial and cost-intensive. The subject of this thesis is a...
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Transparent transducers and fast electronics for next-generation ultrasound and photoacoustic imaging
DownloadSpring 2022
Most ultrasound transducers are opaque. Transparent transducers could lead to novel applications, including combined optical and ultrasound imaging, photoacoustic imaging and other multi-modality systems. This thesis introduces transparent capacitive micromachined ultrasound transducers and...
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Fall 2017
Molecular imaging techniques are important for understanding fundamental biological processes and genetic functions in organisms. Non-invasive, high-resolution, deep imaging, as well as the ability to separate molecular species, are all critical to the success of a molecular imaging technique....