[A synthetic amino acid radiolabeled with carbon-11. Acting as a methyl donor, methionine C 11 is incorporated into macromolecules, where it serves as a positron emission tomography (PET) imaging agent for detecting tumors with high rates of protein synthesis. ( NCI )]
UMLS (NCI) C0252667 - Amino Acid, Peptide, or Protein
- Pharmacologic Substance