Medfield Sensor Systems

Purpose and goal

The overall project goals were to improve the performance and reduce the cost of Medfield´s microwave based diagnostic tool for stroke and trauma detection. This was achieved by exploring and successfully verifying a time domain-based measurement system, a Software Defined Radio (SDR) system and a MIMO-based system. Furthermore, algorithms were improved to better handle calibration deficiencies in practical situations and by exploring understanding gained through simulations. Finally, robustness and measurement repeatability was improved by antenna design optimizations.

Expected results and effects

The results from the project have led to significantly improved performance and robustness for Medfield´s microwave based diagnostic system for stroke detection. Work on cost reduced electronics opens up for reducing the cost of future device releases, potentially leading to a wider adoption of the system. Medfield has just successfully completed the clinical verification of a stroke detection system. It is now being evaluated by authorities for clinical use (CE certification). Potentially, this can significantly improve stroke care and patient quality of life.

Planned approach and implementation

The project was structured in four workpackages. They were all completed in close collaboration between Medfield and Chalmers. Useful ideas were also exchanged with other industrial partners in the overall consortium. Not all planned tasks were fully completed since better ideas emerged during the project. The possibility to adjust the direction of a five-year project like this is considered to be critical to the successful outcome of the project.