Design and realization of a microwave applicator for diagnosis and thermal ablation treatment of cancerous tissue
- Resource Type
- Conference
- Authors
- Reimann, Carolin; Puentes, Margarita; Schubler, Martin; Jakoby, Rolf
- Source
- 2016 German Microwave Conference (GeMiC) Microwave Conference (GeMiC ), 2016 German. :177-180 Mar, 2016
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Signal Processing and Analysis
Sensors
Resonant frequency
Transmission line measurements
Microwave theory and techniques
Temperature measurement
Cancer
Surgery
- Language
Microwave sensors play a significant role in medical environments. The contact-less and non-invasive sensing mechanism to determine the dielectric properties of tissue is of great advantage. In this work, a dual mode microwave sensor is designed to combine the diagnosis and treatment of cancer in one minimal invasive surgery tool. In order to detect abnormalities, the relative change of permittivity of healthy tissue compared to tumor tissue is evaluated. For the treatment mode, microwave ablation is used to eradicate malignant cells. The challenges of the design process are the dimension limitation and packaging with an appropriate interface of the sensor integrated in a needle-like surgery tool. The small size leads to a significant increase of the operating frequency up to 40GHz with the advantage of using very low input power for the thermal ablation procedure. The sensor provides a maximum temperature of over 100°C with 2W input power. Prototypes of the proposed sensors are fabricated to measure the transmission characteristics of the structures unloaded and loaded.