Sign, M

The M sign can be seen on the sagittal MRI brain located at the inferior frontal gyrus, indicating the location of the frontal operculum—pars orbitalis, pars triangularis, and pars opercularis.


Cases

1


This MRI sagittal image clearly depicts the M sign, composed of the pars orbitalis (green line), pars triangularis (red V), and pars opercularis (blue line). Additionally, please notice the presence of superior temporal encephalomalacia, which is secondary to an old ICH