Diagnosis of brain tumours and planning for surgery or radiation treatment is currently performed using MRI. Contrast-enhanced T1-weighted imaging can reveal disruptions in the blood–brain barrier, ...

Imaging with the molecular imaging tracer 18F-FDOPA can help distinguish radiation-induced lesions from new tumor growth in patients who have been treated with radiation for brain metastases, ...

Three amino acid tracers were used: [15 N] glycine, L-[l-13 C]phenylalanine, and L-[l-13 C]leucine (Merck Frosst, Montreal, Canada). Enrichment was verified by gas chromatography-mass spectrometry.

Isotopes are forms of a chemical element that contain the same number of protons and electrons but have a different number of neutrons. In general, the lighter isotope of an element tends to be more ...