A Transmission-Based Dielectric Property Probe for Clinical Applications
Journal article, 2018

We have developed a transmission-based, open-ended coaxial dielectric probe that can be used in clinical situations and overcomes many of the limitations related to the typical reflection-based dielectric probes. The approach utilizes the low profile, open-ended coaxial cables enabling clinicians to still probe relatively compact spaces. The sensing depth can be extended to as large as 1.5 to 2 cm compared with the more typical range of 0.3 mm for conventional probes and is dramatically less affected by measurement technique variability including poor sample contact and cable bending. As a precursor to an actual clinical implementation, we study the technique in a range of homogeneous liquids with substantially varying dielectric properties. The initial results demonstrate good agreement between the transmission-based probe and commercial, reflection-based probes and pave the way for more substantial clinical implementation.

penetration depth

vertebra bone

transmission-based dielectric probe

open-ended coaxial cable

Author

Paul M Meaney

Thayer School of Engineering at Dartmouth

Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik, Biomedical Electromagnetics

Tomas Rydholm

Chalmers, Electrical Engineering, Signalbehandling och medicinsk teknik, Biomedical Electromagnetics

H. Brisby

Sahlgrenska University Hospital

Sensors

1424-8220 (ISSN) 1424-3210 (eISSN)

Vol. 18 10

Subject Categories

Medical Laboratory and Measurements Technologies

Textile, Rubber and Polymeric Materials

Biomedical Laboratory Science/Technology

DOI

10.3390/s18103484

PubMed

30332809

More information

Latest update

10/30/2018