Fig. 5.

Ultrasound imaging of synthetic hydrogel in healthy porcine brain tissue surrogates. A Distinct layers in brain tissue surrogates within agarose resection phantoms. B-scan ultrasound images of the surrogates were obtained, with porcine brain tissues being hyperechoic (gray) and the synthetic hydrogels being hypoechoic (dark) for surrogates with cranial implant (B) and without cranial implant (C). Three replicates of porcine brain tissue surrogates were prepared for each condition. Scale bar is 5 mm.