Effects of the interaction between ferric iron and L-dopa melanin on T1 and T2 relaxation times determined by magnetic resonance imaging

Autor: Anton N. Hasso, David B. Hinshaw, Louis P. Bozzetti, Barbara A. Holshouser, Roland C. Aloia, James P. MacMurray, Jeffrey M. Tosk, A. Douglas Will
Rok vydání: 1992
Předmět:
Zdroj: Magnetic Resonance in Medicine. 26:40-45
ISSN: 1522-2594
0740-3194
DOI: 10.1002/mrm.1910260105
Popis: T1 and T2 relaxation times of agar phantoms containing L-dopa melanin and Fe3+ were measured under MRI conditions. Fe3+ shortened T1 and T2 relaxation times. Melanin influenced relaxation times only in the presence of Fe3+; thus, contrast in MR images of the basal ganglia may depend upon levels of both paramagnetic iron and neuromelanin.
Databáze: OpenAIRE