Andrew Marc Goodman

The Design and Development of an Integrated Multi-Functional Microwave Antenna Structure for Biological Applications

A new multi-functional microwave antenna structure for use in biological applications in described. The antenna structure allows efficient propagation of Ku -band energy into biological tissue to perform in situ tissue characterization (measurement) and ablation or coagulation (treatment) of solid cancerous tumors and surrounding tissue. A calibration method that allows tissue characterization has been developed. The structure also supports a separate channel to allow material to be transported inside the structure without affecting the electromagnetic field propagation within the structure and the radiation pattern produced at the distal end. The structure is rigid and of small enough diameter to enable it to be introduced percutaneously into the human body under local anaesthesia.

A New Wave in Electrosurgery : A Review of Existing and Introduction to New Radio-Frequency and Microwave Therapeutic Systems

A review of experimentally and commercially available therapeutic systems that use radio-frequency (RF) and microwave energy is provided in the first part of this article. The second part considers new advanced electrosurgical systems that combine the advantages associated with the use of low-frequency RF energy and high-frequency microwave energy to enhance the overall clinical effect and discusses how the frequency of operation and the design of the antenna structure can be optimized to ensure the desired tissue effects are achieved. Consideration is also given to how the latest developments in high-frequency semiconductor power technology developed for the communications sector are enabling new microwave and millimeter-wave energy-based electrosurgical systems to be developed and commercialized at an affordable cost.