RESUMEN
Recently clinical MR contrast media consists mainly of gadolinium based small molecule complexes,such as Gd-dTPA,Gd dOTA,etc,but small molecule complexes are defective in the relaxation and early diagnosis.With the development of nanotechnology,molecular nanoprobes not only have the advantages of small particle size,good biocompatibility,enhanced penetration and retention (EPR) effect and long half-life,but also their relaxation rates are higher than that of common gadolinium contrast media.The application of current MR molecular probe,such as liposomes,dendrimers,mesoporous silica,polymer micelles,carbon nanotubes,nano-gold and paramagnetic nanoparticles were mainly introduced in this paper.
RESUMEN
Recently clinical MR contrast media consists mainly of gadolinium based small molecule complexes,such as Gd-dTPA,Gd dOTA,etc,but small molecule complexes are defective in the relaxation and early diagnosis.With the development of nanotechnology,molecular nanoprobes not only have the advantages of small particle size,good biocompatibility,enhanced penetration and retention (EPR) effect and long half-life,but also their relaxation rates are higher than that of common gadolinium contrast media.The application of current MR molecular probe,such as liposomes,dendrimers,mesoporous silica,polymer micelles,carbon nanotubes,nano-gold and paramagnetic nanoparticles were mainly introduced in this paper.