Nasion to Bragma ,….. 13 cm
Fronto zygomatic suture
The nasion is the intersection of the frontal bone and two nasal bones of the human skul
Lamba 25cm posterior to nasion and 13 cm to bragma
60% pts ..trnasverse sinus lie below this point
2cm
1cm
Lower rolandic point is situated 2.5cm behind the pterion on the sylvian fissure line
ASP has cisternal aspect
Best point to start with for opening sylvian fissure..constant location
Subcentral gyrus
Supra marginal gyrus (green)
Superior temporal gyrus (purple)