Neurovascular Case Study

Panorama 0.6T Neurological Exam: Arteriovenous Malformation (AVM)

Courtesy of:  R. Craig Platenberg, MD, Wide Open MRI, Frederick, Maryland, USA
January 20, 2004

T1 axials FFE

FOV 25 cm, TR 20 ms, TE 7 ms ST 4.5 mm, Matrix 512 x 512 Scan time: 4 min 31 sec

Note the prominent signal flow voids in the nidus of this left fronto-parietal AVM

T1 Sagittal

FOV 25 cm, TR 470 ms, TE 13 ms, ST 4.5 mm Matrix 406 x 408 Scan time: 4 min 24 sec

The cavernous internal carotid artery is prominent. There are prominent superficial draining veins as well as a large superior sagittal sinus.

T2 TSE axial

FOV 25 cm, TR 6000 ms, TE 108 ms, ST 5 mm Matrix 256 x 256, scan time: 4 min 24 sec

The ACA and MCA are enlarged as is the Vein of Labbe.

The draining veins are seen in relief in the CSF spaces.

FLAIR axials

FOV 25 cm, TR 4195 ms, TE 90 ms, TI 1900, ST 5 mm Matrix 256 x 256, scan time: 5 min 27 sec

Gliosis is seen as high signal on FLAIR imaging in the area surrounding the nidus.

MRA 3D Inflow (TOF) and MIP

FOV 25 cm, TR 27ms, TE 5 ms, ST 1.2 mm Matrix 384 x 384, scan time: 4 min 48 sec

MRA MIPs

Selected MIP Left Internal Carotid and Vertebral