Vanderbilt researchers have developed heterogeneous catalysis and catalyst for the NMR Signal Amplification by Reversible Exchange (SABRE) hyperpolarization process. Coupled with the researchers' development of a method to perform SABRE in aqueous solutions, this discovery could allow fully biocompatible SABRE hyperpolarization processes in water with catalyst recycling. This would allow the production of pure aqueous contrast agents requiring only parahydrogen as a consumable.