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Answer: Ischemic white matter disease refers to small blood vessels in the brain that are clogging up a bit. This is usually not a serious condition unless the amount of small vessel disease gets to a moderate or severe degree.It is often caused by high blood pressure, diabetes, high cholesterol, or smoking.nswer: Ischemic white matter disease refers to small blood vessels in the brain that are clogging up a bit. This is usually not a serious condition unless the amount of small vessel disease gets to a moderate or severe degree.
The white matter of the brain is located in the central and subcortical regions of the cerebral and cerebellar hemispheres and accounts for about 60 % of the total brain volume. The white matter includes the major commissural tracts, the cortical association fibers, and all the cortical afferent and efferent fibers.esions are found in the white matter of the brain stem, cerebrum, and cerebellum, and as a rule are asymmetric and few in number. There is no predilection for the periventricular white matter. The lesions are typically hyperintense on T2 and hypointense on T1-weighted images and without hemorrhage or calcification.