Fig 1.
SWI 7T MRI of the midbrain and the surrounding structures.
CSF: cerebrospinal fluid, Pu: putamen, SN: substantia nigra, NR: Nucleus ruber, N1: Nigrosome 1.
Fig 2.
a1, b1: examples for a midbrain rated as bilaterally clearly visible nigrosome 1 (Group I); a2, b2: highlighted nigrosome 1 in the same subjects; c: ROI positioning in the SN, putamen, red nucleus and CSF of the ventricular system.
Table 1.
Visibility of nigrosome 1.
Fig 3.
Midbrains rated as “limited visibility”.
a: unilateral “limited visibility on the right side rated as 1; b: bilateral “limited visibility” on each side rated as 1, c: bilateral not visible nigrosome 1.
Table 2.
Normalized SIs per age group and nucleus.
Fig 4.
Column scatter plots of the SIs of all subjects within the respective nuclei and age groups.
SIs of subjects rated as “limited visibility” are marked by size and shape: medium size = “limited visibility” with at least a unilaterally rated 1, biggest size = containing a rating as 0 “not visible nigrosome 1”.