polymers Article Shape Memory Polyurethane with Porous Architectures for Potential Applications in Intracranial Aneurysm Treatment Jingyu Wang 1,†, Robert Kunkel 1,2,†, Jishan Luo 1, Yuhua Li 3, Hong Liu 2,3, Bradley N. Bohnstedt 4, Yingtao Liu 1,* and Chung-Hao Lee 1,2,* 1 ...