PMC2778868_01
(a)-(c): Axial
diffusion-weighted images, b = 1000, demonstrate multiple areas of high signal in
bilateral frontal and parietal lobes, left occipital lobe, left thalamus, and
left pons.
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fig1
Magnetic resonance imaging (MRI) of the brain (Figure 1) demonstrated bilateral multifocal regions of increased signal on diffusion-weighted imaging in the left pons, left occipital lobe, left thalamus, left and right frontal lobes, and left and right frontoparietal regions.
3D maximum-intensity
projection (MIP) image from a 3D time of flight MRA demonstrates occlusion of
the right internal carotid artery at its origin (arrow). The vertebral arteries
are diminutive (arrowheads) and the basilar artery is not visualized.
AH2009-153643.002.jpg
PMC2778868_01_AH2009-153643.002.jpg
fig2
Magnetic resonance angiography (MRA) of the head and neck without contrast (Figure 2) demonstrated occlusion of the right internal carotid artery (ICA) at its origin without distal reconstitution.
3D MIP
images from a noncontrast 2D time of flight MRA demonstrate restoration of flow
in the right internal carotid artery and posterior circulation. Residual
occlusion of the distal right PCA persists (arrow).
AH2009-153643.003.jpg
PMC2778868_01_AH2009-153643.003.jpg
fig3
MRA evaluation (Figure 3) revealed resolution of the right ICA thrombus with overall decreased caliber of the vessel compared to the left, and residual irregularity and narrowing at the superior cervical segment.