Brain Arteriovenous Malformations: Assessment with Dynamic MR Digital Subtraction Angiography
Paul D. Griffithsa,
Nigel Hoggarda,
Daniel J. Warrena,
Iain D. Wilkinsona,
Bob Andersona and
Charles A. Romanowskia
a From the Academic Department of Radiology, University of Sheffield, MRI Department, Royal Hallamshire Hospital, Glossop Rd, Sheffield, South Yorkshire, S10 2JF, U.K. Address reprint requests to Professor P. D. Griffiths.
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FIG 1. 54-year-old patient with Wyburn-Mason syndrome and bilateral mirror-image parietal AVMs.
A, Axial T2-weighted (2900/87.5/2) image shows flow voids in both AVMs and the set-up acquisition block for the anteroposterior projection MR-DSA. Note that the anterior cerebral arteries are not included.
B, Right carotid selective conventional catheter angiogram shows the right-sided AVM.
C–E, Several stages of MR-DSA during the passage of a contrast bolus in a Towne projection. Early arterial phase (C), late arterial phase (D), and early venous phase (E).
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FIG 2. 36-year-old man with a corpus callosum AVM that extends into the left lateral ventricle.
A, Axial T2-weighted (2900/87.5/2) image though the level of the nidus with set-up acquisition block for lateral projection MR-DSA.
B, T2-weighted image shows the nidus extending into the left lateral ventricle.
C, Left carotid selective conventional catheter angiogram shows the AVM.
D–F, Several stages of MR-DSA during passage of a contrast bolus in a lateral projection. Early arterial phase (D), late arterial phase (E), and early venous phase (F).
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FIG 3. Scatter plot of maximum measured diameter of AVM nidus on MR-DSA against that measured on CCA with the line of best fit shown; calculated Pearson correlation coefficient, r = .953, P = .01
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FIG 4. 31-year-old woman with a left temporal lobe AVM.
A, Coronal T2-weighted (2900/75/1) single-shot echo-planar image shows the set-up acquisition block for the axial projection MR-DSA.
B, T2-weighted 2900/87.5/2 axial section through the level of the nidus.
C, Early arterial phase axial projection MR-DSA shows the contour of medial border (arrows). This contour cannot be depicted with CCA.
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FIG 5. 62-year-old man with an occipitoparietal AVM.
A, Axial T2-weighted (2900/87.5/2) image shows the set-up acquisition block for the lateral projection MR-DSA at the level of the nidus.
B, Lateral projection from a selective right internal carotid conventional catheter angiogram shows a flow-related aneurysm on the pericallosal artery (arrow).
C–E, This projection not only shows the nidus in the early arterial phase but also the flow-related aneurysm (arrow, C). In addition, there is an anterior communicating artery aneurysm, not well shown on this projection, which was noted by consensus at review. Late arterial phase (D), early venous phase (E).
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