C4.1 - A coplanar probe design for humidity spot measurements of human brain tissue
- Event
- AMA Conferences 2015
2015-05-19 - 2015-05-21
Nürnberg, Germany - Band
- Proceedings SENSOR 2015
- Chapter
- C4 - Medical Sensors
- Author(s)
- T. Reinecke, S. Ahrens, S. Zimmermann - Leibniz University Hannover, Hannover (Germany), L. Hagemeier, M. Klintschar - Hannover Medical School, Hannover (Germany)
- Pages
- 402 - 406
- DOI
- 10.5162/sensor2015/C4.1
- ISBN
- 978-3-9813484-8-4
- Price
- free
Abstract
In an autopsy, the quantification of edema in human brain tissue is helpful to verify the cause of death, especially in case of no visible evidence, or multiple affections. However, there is no standardized procedure defined in forensic medicine for the determination of the water content in parenchymatous organs, such as the brain. Thus, the aim of our work is the development of a fast and exact, but lowcost, measuring system, which fits into the procedure of a routine autopsy. Therefore, the dependency of the permittivity from the water content is utilized. To avoid any brain tissue sampling process a coplanar probe is designed. Thus, it is possible to measure rapidly the tissue permittivity and subsequently the water content by simply pressing it on the tissue. This paper focuses on a new coplanar probe with a reduced sensing area size to enable real spot measurements of the highly inhomogeneous
human brain tissue. We compare the results to measurements with a former used coplanar probe and
to reference measurements with a commercially available moisture analyzer.