TY - JOUR T1 - Atypical MR Imaging Perfusion in Developmental Venous Anomalies JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 1549 LP - 1552 VL - 25 IS - 9 AU - Daniel L. A. Camacho AU - J. Keith Smith AU - John D. Grimme AU - Harold F. Keyserling AU - Mauricio Castillo Y1 - 2004/10/01 UR - http://www.ajnr.org/content/25/9/1549.abstract N2 - 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. ER -