Porphyrin-melanin interaction: Effect on fluorescence and non-radiative relaxations
β Scribed by A. Losi; R. Bedotti; L. Brancaleon; C. Viappiani
- Book ID
- 103994422
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 843 KB
- Volume
- 21
- Category
- Article
- ISSN
- 1011-1344
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## Abstract T1 and T2 relaxation times of agar phantoms containing Lβdopa melanin and Fe^3+^ were measured under MRI conditions. Fe^3+^ shortened T1 and T2 relaxation times. Melanin influenced relaxation times only in the presence of Fe^3+^; thus, contrast in MR images of the basal ganglia may depe