Use of a fluorinated polymer as a contrast agent in solid state 19F magnetic resonance imaging (MRI), scaffold comprising said polymer and use thereof
A method of using a fluorinated polymer having a glass transition temperature below 40 C as a contrast agent in 19 F magnetic resonance imaging (MRI) of a solid object, said solid object comprising said contrast agent. The invention relates to a solid object comprising a structural component and an imaging component, wherein the imaging component is at least one fluorinated polymer. The invention relates to a method for 19 F MRI in solid state using a contrast agent comprising a fluorinated polymer as well as a method for in vivo visualizing a scaffold. It further relates to a method for in vivo monitoring the degradation of a solid object in time, wherein the degradation is monitored in time by using 19 F MRI to visualize the solid object, and wherein the amount of degradation of the solid object is determined based on the decrease in the visibility of the amount of 19 F.
1. A solid object comprising an imaging label or contrast agent including a (per)fluorinated polyether polymer having a glass transition temperature (Tg) below 40° C., which is visible by 19 F magnetic resonance imaging (MRI) of the solid object, wherein the solid object further comprises at least one non-fluorinated polymer wherein the (per)fluorinated polyether polymer and the at least one non-fluorinated polymer are bonded together by covalent or non-covalent bonding, wherein the at least non-fluorinated polymer is obtained from at least one monomer selected from the group consisting of urethane, urea, bisurea, ureidopyrimidone and combinations thereof wherein the amount of fluorine ( 19 F) in the (per)fluorinated polyether polymer is at least 5 wt %, based on the total mass of the polymer.
2. The solid object according to claim 1 , wherein the (per)fluorinated polyether polymer and the at least one non-fluorinated polymer are bonded together by hydrogen bonding.
3. The solid object according to claim 2 , wherein the fluorinated polymer and the at least one non-fluorinated polymer are blended together to form the solid object.
4. The solid object according to claim 1 , wherein the (per)fluorinated polyether polymer has a molecular mass of at least 600 gram/mol.
5. The solid object according to claim 1 , further comprising a scaffold suitable for tissue engineering including a structural component and the imaging component or contrast agent.
6. The solid object according to claim 5 , wherein the structural component is selected from the group consisting of a polymer, a covalently or non-covalently bonded copolymer and one or more combinations thereof.
7. The solid object according to claim 5 , wherein the structural component has a Young's modulus of at least 0.1 mega Pascal (MPa).
8. The solid object according to claim 5 , wherein: the structural component is present in an amount of 0 to 99 wt %, based on the total mass of the scaffold the imaging component is present in an amount of 1 to 100 wt %, based on the total mass of the scaffold, and optionally a biological active component is present in an amount of 0 to 50 wt %, based on the total mass of the scaffold.
9. The solid object according to claim 1 wherein the at least non-fluorinated polymer is obtained from at least one monomer selected from the group consisting of bis(ureido)alkyl and bis(ureido)aryl.
10. The solid object according to claim 1 wherein the at least non-fluorinated polymer is obtained from at least one monomer selected from the group consisting of bis(ureido)alkyl, bis(ureido)aryl, and ureidopyrimidone.