Loyola D'Silva1, S. Sendhil Velan1
1Laboratory for Molecular
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.