These lesions appear hypointense on Tl-weighted ami hypcrintcnsc on T2-weighicd and FLAIR images and may show ring enhancement especially in immunocompetent patients. Leptomeningeal enhancement is Ihe most common presentation. Dilated perivascular spaces that follow moncler jacket sale CSF intensity may also be seen, representing gelati¬nous pseudocysts, which do not cnhance since they arc extra-axial and do not compromise the blood-brain hairier. Spinal cord lesions arc in the cervical region. Spinal coid lesions in MS lend lo be peripherally located, do nol respect white and gray matter bouudaiics, and die overwhelming majority arc less than two vertebral body segments in lenglli. Associated spinal cord swelling occurs in 6*5 lo 14*5 or moncler jacket patients and atrophy in 2% to 40% of patients.MRI criteria for diagnosis of MS suggested by Pa/ckas and colleagues include three or more lesions with pres¬ence of at least two of the following lesion characteristics:1. Si/e greater than 5 mm2. Periventricular3. Infratenlorialml'li tt'ltl STLJ.kosln VAM vmsdevie disease, or neuromyelitis optica, consists of both transverse myelitis moncler outlet and optic neuritis, which can occur simultaneously or be .separated by days or weeks. Il is controversial w hcthcr this represents an acute variant of multiple sclerosis or a separate demyelinaling disease.Daloconcentric sclerosis represents lesion wilh moncler alter¬nating concentric regions of demyelination and normal brain.Schildcr disease is an acute, rapidly progressive form of MS will) bilateral, relatively symmetric demyelina¬tion. It is seen in chtklhond and rarely alter the age ol 40 years and is characterized by large con fluent areas ol de¬myelination involving supra- and infratenlorial parenchyma.Marburg variant is a fulminant for in alfecting youugei patients. It has a febrile prodrome and poor prognosis with death In months.Persons younger than 40 years ami w ith migraine can have high signal abnormalities predominantly an the centrum scmiovale and subcortical while matter, which extend into moncler jackets (he deeper white matter at the level of ihe basal ganglia.Acute disseminated encephalomyelitis (adiim) is a monophask* demyelinaling disease, usually caused by infection, vaccination, or cxanihematous diseases ol childhood. Suspected etiology is based on an allergic or autoimmune cross-reaction wilh a viral protein. MRI findings in ADIIM include multiple large T2-hyperin- u-nsc lesions, which enhance in a nodular or ring pat¬tern. However, enhancement is usually mild or spony in nature. Bilateral but a*ymmclric involvement of periph¬eral gray-while matter junction is seen. Lesions do nol usually involve callososcplal interface. No moncler clothing new lesions should appear on MR after 6 months from initial diag¬nosis of the disease.Acute hemorrhagic leukoencephalitis (Hurst disease) is a fulminant form of ADGM wilh rapid progression from confusion lo stupor and coma in less than a week.