Ultrasound Elastography to Quantify Average Percent Pressure Normalized Strain Reduction Associated with Different Aortic Endografts in 3D-Printed Hydrogel Phantoms

We 3D-printed axisymmetric tissue-mimicking phantom hydrogel vessels from polyvinyl alcohol cryogel (PVA-c), a material that has previously been biologically validated against vascular tissue. Water was pumped through the phantom using a ViVitro SuperPump (Victoria, British Columbia, CA) cardiac simulator. We found that the percent reduction in average pressure normalized strain increased as the degree of graft oversizing increased.