File:Human- adult brain MRI.jpg

Human- adult brain MRI

A T1-weighted sagittal MR image from a control subject, showing the midline structures of the posterior cranial fossa and the brainstem and the cerebellum.

• d + e = length of clivus
• S = sphenooccipital synchondrosis
• d = length of basisphenoid between the top of the dorsum sellae and the sphenooccipital synchondrosis of the clivus
• e = length of the basiocciput between the synchondrosis and the basion
• b = length of the hindbrain between the midbrain-pons junction and the medullocervical junction
• a = angle of the cerebellar tentorium to Twining's line
• c = length of cerebellar hemisphere
• DS = top of the dorsum sellae
• IOP = internal occipital protuberance
• OP = opisthion; IOP to OP = length of supraocciput
• B = basion; TW = Twining's line
• McR (B to OP) = McRae's line

Original File Name: 1743-8454-2-11-2-l.jpg

Dimensions of the posterior fossa in patients symptomatic for Chiari I malformation but without cerebellar tonsillar descent. Sekula RF Jr, Jannetta PJ, Casey KF, Marchan EM, Sekula LK, McCrady CS. Cerebrospinal Fluid Res. 2005 Dec 18;2:11. PMID: 16359556

© 2005 Sekula et al; licensee BioMed Central Ltd.

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