Microwave Antenna System for Muscle Rupture Imaging with a Lossy Gel to Reduce Multipath Interference
Journal article, 2022

Injuries to the hamstring muscles are an increasing problem in sports. Imaging plays a key role in diagnosing and managing athletes with muscle injuries, but there are several problems with conventional imaging modalities with respect to cost and availability. We hypothesized that microwave imaging could provide improved availability and lower costs and lead to improved and more accurate diagnostics. In this paper, a semicircular microwave imaging array with eight antennae was investigated. A key component in this system is the novel antenna design, which is based on a monopole antenna and a lossy gel. The purpose of the gel is to reduce the effects of multipath signals and improve the imaging quality. Several different gels have been manufactured and evaluated in imaging experiments. For comparison, corresponding simulations were performed. The results showed that the gels can effectively reduce the multipath signals and the imaging experiments resulted in significantly more stable and repeatable reconstructions when a lossy gel was used compared to when an almost non-lossy gel was used.


medical diagnosis

antenna system

microwave imaging

image reconstruction

muscle rupture

multipath signal


Laura Guerrero Orozco

Chalmers, Electrical Engineering, Signal Processing and Biomedical Engineering

Sahlgrenska University Hospital

Lars Peterson

University of Gothenburg

Andreas Fhager

Sahlgrenska University Hospital

Chalmers, Electrical Engineering, Signal Processing and Biomedical Engineering


14248220 (eISSN)

Vol. 22 11 4121

Subject Categories

Other Medical Engineering

Signal Processing

Radiology, Nuclear Medicine and Medical Imaging





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6/3/2022 8