Chemical Modifications of Porous Shape Memory Polymers for Enhanced X-ray and MRI Visibility oleh Grace K. Fletcher, Landon D. Nash, Lance M. Graul, Lindy K. Jang, Scott M. Herting, Matthew D. Wilcox, Tyler J. Touchet, Ana Katarina Sweatt, Mary P. McDougall, Steven M. Wright, Duncan J. Maitland