Effects of the interaction between ferric iron and L‐dopa melanin on T1 and T2 relaxation times determined by magnetic resonance imaging
- 1 July 1992
- journal article
- Published by Wiley in Magnetic Resonance in Medicine
- Vol. 26 (1) , 40-45
- https://doi.org/10.1002/mrm.1910260105
Abstract
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.Keywords
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