Oligomerization of paramagnetic substrates result in signal amplification and can be used for MR imaging of molecular targets.
Bogdanov A, Matuszewski L, Bremer C, Petrovsky A, Weissleder R. Oligomerization of paramagnetic substrates result in signal amplification and can be used for MR imaging of molecular targets. Mol Imaging. 2002 Jan-Mar; 1(1):16-23.