Fig. 9From: Early assessment of acute ischemic stroke in rabbits based on multi-parameter near-field coupling sensingThe initial average amplitude spectrum (n = 16) of the entire multi-parameter NFC sensing system containing rabbits in reflection and transmission. The frequency range is from 300 kHz to 200 MHz. In two-port test network, lower reflection amplitude (RA) represents less incident signal reflected back to port 1 and higher transmission insertion amplitude (TA) indicates more signals transmitted to port 2 through the brainBack to article page