Detection and Monitoring of Brain Stroke Onsets by an Ad-hoc Double Stage Delay-Multiply-And-Sum (DS-DMAS) Algorithm

This paper presents an ad hoc Double-Stage Multiply-Delay-and-Sum (DS-DMAS) confocal algorithm with a pre-calibration stage and simplified wave propagation compensation adapted for microwave-imaging-based detection and monitoring of brain stroke onsets. We numerically assesses the algorithm using mimicked clinical scenarios of detection and follow-up, including a setup with a multiview 22-antennas system operating from 0.8 to 1.8 GHz and both anthropomorphic homogeneous and multi-tissue head models. The results demonstrate the capability to detect and monitor the pathology, providing 3D intensity power maps highlighting the evolving stroke-affected areas.