"The combination of ventriculomegaly, Sylvian fissure and insular cistern widening, and crowding at the vertex has been termed disproportionately enlarged subarachnoid space hydrocephalus (DESH), reflecting disproportionality between the superior and inferior CSF spaces 1,23,27. The finding of disproportionately enlarged subarachnoid space hydrocephalus without neurologic symptoms has been termed asymptomatic ventriculomegaly with features of idiopathic normal pressure hydrocephalus on MRI (AVIM) 1. It is felt by some authors that AVIM is actually a pre-clinical form of idiopathic normal pressure hydrocephalus 30."
"Periventricular hypodensity (on CT) or high T2-FLAIR signal (on MRI) is supportive of changes in brain water content seen in normal pressure hydrocephalus, and is sometimes referred to as transependymal oedema. It is worth noting, however, that these findings can be difficult to distinguish from microvascular ischaemic changes and that, in fact, they may co-exist 2,25,35,26."
"increased ALVI >0.5 34"
"The combination of ventriculomegaly, Sylvian fissure and insular cistern widening, and crowding at the vertex has been termed disproportionately enlarged subarachnoid space hydrocephalus (DESH), reflecting disproportionality between the superior and inferior CSF spaces 1,23,27. The finding of disproportionately enlarged subarachnoid space hydrocephalus without neurologic symptoms has been termed asymptomatic ventriculomegaly with features of idiopathic normal pressure hydrocephalus on MRI (AVIM) 1. It is felt by some authors that AVIM is actually a pre-clinical form of idiopathic normal pressure hydrocephalus 30."
"The combination of ventriculomegaly, Sylvian fissure and insular cistern widening, and crowding at the vertex has been termed disproportionately enlarged subarachnoid space hydrocephalus (DESH), reflecting disproportionality between the superior and inferior CSF spaces 1,23,27. The finding of disproportionately enlarged subarachnoid space hydrocephalus without neurologic symptoms has been termed asymptomatic ventriculomegaly with features of idiopathic normal pressure hydrocephalus on MRI (AVIM) 1. It is felt by some authors that AVIM is actually a pre-clinical form of idiopathic normal pressure hydrocephalus 30."
"MR spectroscopy"
"Alzheimer dementia: may show greater dilatation of perihippocampal fissures 2"
Expected headings
"Associations"
"Morphological changes"
"Brain composition changes"
"CSF flow changes"
"MR spectroscopy"
"Periventricular hypodensity (on CT) or high T2-FLAIR signal (on MRI) is supportive of changes in brain water content seen in normal pressure hydrocephalus, and is sometimes referred to as transependymal oedema. It is worth noting, however, that these findings can be difficult to distinguish from microvascular ischaemic changes and that, in fact, they may co-exist 2,25,35,26."
"There is, however, a well-established correlation between higher flow velocities and the favourable outcome after ventriculoperitoneal (VP) shunting; hence, quantitative (rather than qualitative) methods have been developed which can be useful not only in patient selection for shunting but also in diagnosis and predicting prognosis 12-15"
"In patients who are not suitable for CSF shunting, management is largely supportive. There is a paucity of evidence to suggest any pharmacological therapy, for example, acetazolamide may be helpful but has only been trialled in a small number of patients 44,45."
"There is, however, a well-established correlation between higher flow velocities and the favourable outcome after ventriculoperitoneal (VP) shunting; hence, quantitative (rather than qualitative) methods have been developed which can be useful not only in patient selection for shunting but also in diagnosis and predicting prognosis 12-15"
"stroke volume upper limit is now suggested to be variable between institutions due to intrinsic scanner differences; thus each centre should obtain their own "normal values", with the upper limit being suggested as two times the normal value 16"
"History and etymology"
"due to mass lesion (e.g. pineal region, tectal plate, midbrain)"