title: Atypical MR imaging perfusion in developmental venous anomalies.
abstract: Developmental venous anomalies (DVAs) are common variants of cerebral venous drainage that are typically incidental findings on contrast-enhanced MR imaging studies. We present four cases of asymptomatic DVAs that demonstrate increased cerebral blood flow, cerebral blood volume, mean transit time, and time to peak on perfusion MR images. Our study indicates that alterations in perfusion MR imaging parameters can be seen with uncomplicated DVAs and do not necessarily imply a more ominous underlying etiologic factor, such as hypervascular tumor or stroke.
authors.affiliation: Department of Radiology, University of North Carolina, Chapel Hill, NC 27599, USA.
authors.forename: Daniel L A
authors.initials: DL
authors.lastname: Camacho
authors.forename: J Keith
authors.initials: JK
authors.lastname: Smith
authors.forename: John D
authors.initials: JD
authors.lastname: Grimme
authors.forename: Harold F
authors.initials: HF
authors.lastname: Keyserling
authors.forename: Mauricio
authors.initials: M
authors.lastname: Castillo
mesh_terms: D000328:Adult; D001783:Blood Flow Velocity / Q000502:physiology; D001810:Blood Volume / Q000502:physiology; D001932:Brain Neoplasms / Q000175:diagnosis*; D002421:Caudate Nucleus / Q000098:blood supply / Q000473:pathology; D020787:Central Nervous System Venous Angioma / Q000175:diagnosis*; D002540:Cerebral Cortex / Q000098:blood supply / Q000473:pathology; D002555:Cerebrospinal Fluid / Q000502:physiology; D003937:Diagnosis, Differential; D004292:Dominance, Cerebral; D005260:Female; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged