Signal Intensity of the SN and Related Structures
| Structure | Signal Intensity* | |
|---|---|---|
| On T2-Weighted Images | On Proton /Density-/Weighted and Fast STIR Images | |
| Crus cerebri | WM/LSI† | WM |
| SNr | WM/LSI‡ | GM |
| SNc | WM | GM |
| Prerubral white matter | WM | WM |
| Red nucleus | LSI | WM |
* GM indicates gray matter signal intensity; LSI, low signal intensity; WM, white matter signal intensity.
† Only the medial part.
‡ Only the anterosuperior part.