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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 25:1549-1552, October 2004
© 2004 American Society of Neuroradiology

Case Report
BRAIN

Atypical MR Imaging Perfusion in Developmental Venous Anomalies

Daniel L. A. Camacho^a, J. Keith Smith^a, John D. Grimme^a, Harold F. Keyserling^a and Mauricio Castillo^a

^a From the Department of Radiology, University of North Carolina, Chapel Hill, NC

Address correspondence to Daniel L. A. Camacho, MD, PhD, Department of Radiology, University of North Carolina, CB 7510, Chapel Hill, NC 27599

Summary: 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.