Medical research makes a huge difference to people’s lives and within the school we focus on the delivery of cutting edge and high impact research. This is a showcase of some recent research that clearly demonstrates the excellence and innovation of research within Health and Medicine.
WEARABLE TECHNOLOGIES AND HEALTH INFORMATICS
There are many opportunities and challenges associated with pervasive and wearable technologies for patient monitoring, and for health and well-being in general. We research and design systems for patient monitoring and health management. Our projects include clinical collaborations on prototype systems for 24-hour patient monitoring that perform multi-modal patient sensing, including physiological sensing, actigraphy and ambient sensing. We also acquire and quantify subjective reports, and we perform data and visual analytics on the combined datasets. Our projects also include clinical collaborations on a smartphone and wireless sensing system, AllergiSense, that supports people with anaphylaxis management and provides feedback on their autoinjector training to improve their preparedness in the event of a life-threatening allergic reaction.
- Evaluation of AllergiSense smartphone tools for adrenaline injection training, Hernandez-Munoz, L.U., Woolley, S.I., Luyt, D., Stiefel, G., Kirk, K., Makwana, N., Melchior, C., Dawson, T.C., Wong, G., Collins, T. and Diwakar, L., 2017. IEEE Journal of Biomedical and Health Informatics, 21(1), pp.272-282.
MATHEMATICS MODELLING OF ANEURYSM INITIATION
Party balloons suffer localized bulging when inflated, but (fortunately) healthy arteries do not. If they do, we have aneurysms. What is then the design principle for bulge-resistant arteries, and under what pathological changes can aneurysms occur? Some of the questions that we have answered so far include: 'Why do party balloons bulge when inflated and at what pressure do they bulge?' 'Can we improve bulge resistance by increasing wall thickness?' and also 'Arteries are multi-layed and fibre-reinforced. How do fibre reinforcement and optimized fibre orientation help prevent bulge formation?'
- Weakly nonlinear analysis of localized bulging of an inflated hyperelastic tube of arbitrary wall thickness, Ye, Y., Liu, Y. and Fu, Y., 2020. Journal of the Mechanics and Physics of Solids, 135, p.103804.
UTILISING NEURAL NETWORKS FOR ULTRASOUND IMAGES
Fast and accurate segmentation of musculoskeletal ultrasound images is an on-going challenge. Two principal factors make this task difficult: firstly, the presence of speckle noise arising from the interference that accompanies all coherent imaging approaches; secondly, the sometimes subtle interaction between musculoskeletal components that leads to non-uniformity of the image intensity. Our work presents investigates of the potential of Convolutional Neural Networks (CNNs) to address both of these problems. The impact of this research has shown that CNN performance, when using expert ground truth image, is better than in the case of using Canny ground truth image. Our technique is promising and has the potential to speed-up the image processing pipeline using appropriately trained CNNs.
- Using Convolutional Neural Network for edge detection in musculoskeletal ultrasound images, 2016 International Joint Conference on Neural NetworksS. I. Jabbar, C. R. Day, N. Heinz and E. K. Chadwick, (IJCNN), Vancouver, BC, 2016, pp. 4619-4626, doi: 10.1109/IJCNN.2016.7727805.
CARTILAGE AND BONE REGENERATION AFTER CELL THERAPY
Cell-based therapy (using autologous cartilage, bone and stem cells) is used mainly for the treatment, repair and regeneration of small areas of cartilage and bone damage resulting from accidental injury (e.g., to the knee joint) or tissue degeneration (e.g., in arthritis and osteo-arthritis). This therapy is being considered as a promising and viable alternative to artificial implants in large tissue regeneration such as the knee and hip. It could potentially improve the quality of life for the millions of arthritis and osteoarthritis sufferers worldwide. However, its benefit has not yet been clinically proven and is still only in the research trial phase. One of the main obstacles that clinicians face is that it is difficult and not feasible to continuously monitor the repair process following surgical insertion into the patient’s knee joint, for example. Hence, many details of the repair process are unknown. Our research focuses on developing mathematical models to enable better understanding of the repair process in humans.
We developed a mathematical model of cartilage regeneration after cell therapy. This model has enabled much better understanding of the repair process and has addressed some fundamental questions that are very useful in guiding practitioners of this cell-based therapy. Subsequent research activity has focussed on including cell-to-cell interactions between the chondrocytes and cartilage cells into our model. We have shown that co-implantation of both chondrocytes and stem cells could be more beneficial to the repair process than implanting each individually
- A mathematical model of cartilage regeneration after chondrocyte and stem cell implantation - II: The effects of co-implantation, Campbell, K, Naire, S. and Kuiper, JH. 2019. Journal of Tissue Engineering, vol. 10.