(A) 30× magnification image of foam morphology captured on a Keyence Digital Microscope. Bottom: SEM cross-section images of native SMP foam in (B) horizontal (x–y) and (C) vertical (x–z) planes. Membranes are clearly shown between foam prior to reticulation. Panels B and C are reprinted from Journal of Mechanical Behavior of Biomedical Materials, Volume 40, Rodriguez et al., Reticulation of low density shape memory polymer foam with an in vivo demonstration of vascular occlusion, page 102–114, 2014 (ref 14), with permission from Elsevier.