Hyperpolarized (13)C magnetic resonance reveals early- and late-onset changes to in vivo pyruvate metabolism in the failing heart. by Schroeder, M, Lau, A, Chen, A, Gu, Y, Nagendran, J, Barry, J, Hu, X, Dyck, JR, Tyler, D, Clarke, K, Connelly, K, Wright, G, Cunningham, C