Ultrasound Imaging is the most common use of ultrasound experienced by the public. It is often used as the first diagnostic tool to non-invasively examine the abdomen, with scans during pregnancy of the developing baby, and examination of the liver and other organs. We are developing new technologies for high resolution ultrasound imaging for clinical applications, investigating new materials to promote highly sensitive devices, and device miniaturisation. We are also now able to employ Machine Learning in the imaging process, for example to accurately differentiate tumourous material from healthy cells.
Key Projects: Sonopill
The primary aim of our research into precision surgery is to promote significantly improved outcomes for the patient. Our expertise in the design, fabrication, and optimisation of ultrasonic transducers now allows us to deliver a range of configurations, including Langevin and flextensional, which are able to surgically cut different hard and soft tissues with precision, with reductions in tissue necrosis and improvements in clinician control. We are driving this new generation of precision surgery technology through avenues including robotics and advanced materials, such as shape memory alloys, to introduce complex dynamic features. Procedures already benefitting from our research include orthopaedics, soft tissue surgeries, and biopsies.
Key Projects: Ultrasurge
Robotics and AI-Enhanced Medicine
We are now building up significant expertise in the use of artificial intelligence and robotics in the administration and monitoring of medical procedures. A recent example of this studied by our Centre is in anaesthesia, for imitating neural networks to enable clinical decision making, and rapid analysis of procedure metrics. We are also developing advanced artificial intelligence hardware which can be applied for imaging. Some of our research has been focused on self-diagnosis sensing, for devices and systems including implantable optoelectronics and neural probes.
Sensing and Micromanipulation
Our Centre conducts leading research into spintronic and magnetic sensors for point-of-care diagnostics and wearable devices. Our research has investigated sensor concepts for diverse medical applications such as malaria diagnostics and neonatal neuromorphic ECG. We also investigate beamforming and micromanipulation, where we can create forces on biological materials to study and explore their nature. Examples include electrophoresis and optoelectronic tweezers. Our capabilities also extend to advanced biosensors, for example in the apoptosis of muscular tissue to treat cardiovascular diseases.
Targeted Drug Delivery
Ultrasound can be specifically targeted and focused for a range of processes, including drug delivery and the disruption of biological tissues for either treatment or therapy. To conduct these processes with effectiveness, contrast agent microbubble suspensions are often required to be injected. Our research here focuses on understanding and utilising acoustic cavitation, the bubble mechanisms which result from the application of focused ultrasound, and microbubbles for medical procedures. Focused ultrasound can also be used to perform targeted drug delivery, for example through interactions with specific encapsulated drug carriers.
Key Projects: Cavlab
We are focusing on wearable devices for healthcare and health monitoring applications. We focus on manufacture through advanced nanofabrication processes, with deployment in different parts of the body, from brain implants to upper-body energy harvesters. Implantable electronics and devices present many exciting opportunities for the future. We are developing miniaturised magnetic devices for the next generation of wearable magnetomyography technology, and we have made significant progress in other wearable and implantable devices such as electronic contact lenses and wrist-gesture devices. Our research into energy harvesting, for example from the upper limbs, involves cutting-edge research into photovoltaic cells and piezoelectric materials.
Norton, J.C., Slawinski, P.R., Lay, H.S., Martin, J.W., Cox, B.F., Cummins, G., Desmulliez, M.P., Clutton, R.E., Obstein, K.L., Cochran, S., Valdastri, P. (2019) Intelligent magnetic manipulation for gastrointestinal ultrasound. Science Robotics, 4(31), pp. 1-13.
Mathieson, A., Wallace, R., Cleary, R., Li, L., Simpson, H. and Lucas, M. (2017) Ultrasonic needles for bone biopsy. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 64(2), pp. 433-440.
Witte, C., Reboud, J., Cooper, J. M. and Neale, S. L. (2020) Channel integrated optoelectronic tweezer chip for microfluidic particle manipulation. Journal of Micromechanics and Microengineering, 30, 045004.
Song, J. H., Moldovan, A. and Prentice, P. (2019) Non-linear acoustic emissions from therapeutically driven contrast agent microbubbles. Ultrasound in Medicine and Biology, 45(8), pp. 2188-2204.
Heidari, H. (2018) Magnetoelectronics: Electronic skins with a global attraction. Nature Electronics, 1(11), pp. 578-579.
Feeney, A. and Lucas, M. (2018) A comparison of two configurations for a dual-resonance cymbal transducer. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 65(3), pp. 489-496.
Yang, S., Lemke, C., Cox, B. F., Newton, I. P., Näthke, I. and Cochran, S. (2020) A learning based microultrasound system for the detection of inflammation of the gastrointestinal tract. IEEE Transactions on Medical Imaging, 40(1), pp. 38-47.
Zhao, H. et al. (2020) A wide field-of-view, modular, high-density diffuse optical tomography system for minimally constrained three-dimensional functional neuroimaging. Biomedical Optics Express, 11(8), pp. 4110-4129.