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Abstract #0953

Relaxation Enhancement by Longitudinal Multispin Orders

Loyola D'Silva1, S. Sendhil Velan1

1Laboratory for Molecular Imaging, Singapore Bioimaging Consortium, Singapore, Singapore

There is a great interest in increasing the longitudinal relaxation of nuclear spins for hyperpolarized imaging experiments. Longitudinal multispin orders (LOMO) correspond to the non-equilibrium population distribution and can be created in spin systems that exhibit J couplings, dipolar couplings or quadrupolar couplings. It can also be created via cross-correlated relaxation between different relaxation pathways present for the given spin system. A two fold increase in longitudinal magnetization is achieved using the frequency cycling approach.