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AJNR - American Journal of Neuroradiology

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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

View larger version (96K): [in a new window]   FIG 1. Coronal T1-weighted postcontrast image (TR/TE, 635/17) (A), axial DW image (TR/TE, 4300/122; b = 1000) (B), and axial GE CBV (C), CBF (D), MTT (E), and TTP (F) maps of the brain in a patient with an uncomplicated DVA (case 1). The postcontrast image demonstrates a DVA in the left frontal lobe. DW image demonstrates flow void in the central draining vein of the DVA, but no restriction of diffusion. Perfusion maps show increased signal intensity within the DVA and in the surrounding parenchyma on CBV, CBF, MTT, and TTP maps.

View larger version (90K): [in a new window]   FIG 2. Axial T1-weighted postcontrast image (TR/TE, 635/17) (A), axial DW image (TR/TE, 4300/122; b = 1000) (B), and axial gradient echo CBV (C), CBF (D), MTT (E), and TTP (F) maps of the brain in a patient with an uncomplicated DVA (case 3). The postcontrast image demonstrates a DVA in the right temporal lobe. DW image demonstrates flow void in the draining vein of the DVA, but no restriction of diffusion. Perfusion maps show marked elevations in CBF and CBV and milder elevations in MTT and TTP within the DVA and in the surrounding parenchyma.