ct findings of tentorium hernia
lei jian , j iang hai2qing , tian yun2sheng
department of ct, region peoplesp hospital , ganzhou jiangxi 341000 , china
abstract bjective : to improve the knowledge of ct findings of tentorium hernia
and anatomy base1materials and methods :ct scans were done in 93 cases after
clinically proved and 100 control group. observations were made about the charges
of suprasellal cistern , ambient cistern , copora quadrigemina cistern , midbrain
measurements were taken about the date of displacement of the midline struc2 ture.
results :the ct manifestations of tentorium hernia were the shrinking ,displacement
or obliterating of suprasellal cistern(78 / 93) the obliterating side or whole of ambient
cistern(71 / 93) the obliterating of corpora quadrigemina (36 / 93) the shrinking and
displacement of midbrain (69 / 93) . 73 cases were the obliterating 2 or more brain
cistern ,the deforming and displacement of midbrain or / and the obliter2 ating of
multibrain cistern or ambient cistern. the displacement of the midline beyond 15mm
(58 / 93) is considered as indirect manifestation of tentorium hernia. conclusions :
the ctfindings of tentorium hernia has a certain characteristic. and ct scans are
helpful to make sure the cause of brain hernia and the position of pathological changes
on tentorium.
key words :encephalocele cerebellar diseases tomography ,x- ray computed