Design of Compact Magneto-Electric Dipole Antennas for Microwave Medical Imaging

Project: Research

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Microwave imaging for medical diagnostics is a hot topic in academia and industry over the past decade. Much effort has been dedicated to the detection of breast cancer and detection of brain stoke. Microwave imaging diagnostics is non-invasive as microwave is non-ionized radiation. More importantly, microwave imaging systems can be a transportable device.The brain stroke is one of the major causes of death on this planet. There are two types of strokes. The course of treatment for these two types of strokes is not the same. Early thrombolytic therapy is effective for ischemic stroke patients but it can be damaging for hemorrhage patients. Doctors nowadays mainly rely on CT scan or MRI for the diagnosis.These systems are expansive, slow in measurement time and bulky in structure. A compact and mobile imaging system that can be used to monitor a patient in real time continuously anywhere would be attractive in comparison to the existing medical imaging systems. Breast cancer might be the most frequently diagnosed disease for females globally. This cancer is a fast growth of malignant cells that can circulate to other parts of the human body. To reduce the risks of the mortality of the breast cancer, the malignant tissue should be diagnosed and the serious illness should be treated at the early stage. The Xray mammography might be the most efficient imaging tool. However, this method has several weaknesses. In particular, it is not accurate to identify breast tumors at their stages. The other two techniques - ultrasound and MRI – are not used in routine breast cancer screening as they have difficulty in early breast cancer detection. For obtaining accurate measurement result, microwave imaging techniques require wideband antenna elements with compact size. Low mutual coupling between antenna elements is a necessary. Many antenna structures have been proposed in the literature for microwave medical imaging. In general, they are either narrow in bandwidth or large in size. The magneto-electric dipole antenna was invented by the principal investigator of this project. It has been developed as a high-performance wideband antenna technology for mobile communications and radar applications. This antenna technology is proposed for microwave medical imaging in this project. The success of this project will help to enhance the performance of future microwave medical imaging systems for early breast cancer detection and early stroke detection which can help to save a lot of lives of human beings.   


Project number9042990
Grant typeGRF
Effective start/end date1/01/21 → …