Print
Email
Imaging Venous Angiomas
Publication Name:
Current Protocols in Magnetic Resonance Imaging
Unit Number:
Unit A2.3
DOI:
10.1002/0471142719.mia0203s9
Online Posting Date:
August, 2003 Materials
Basic Protocol: Venous Angiomas
Materials
- Normal saline (0.9% NaCl)
- Sterile extravascular contrast agent (e.g., Magnevist, Ominiscan, Prohance)
Looking for materials? Suppliers Guide
Figures
-
Figure A2.3.1A transverse T2 –weighted image demonstrates abnormal “flow void” through the level of the pons just posterior to the smaller but normal flow void in the basilar artery in the prepontine cistern. -
Figure A2.3.2Close-up of the transverse T2 –weighted image through the pons at lower level (caudal) to the image shown in Figure -
Figure A2.3.3A post-contrast transverse T1 –weighted image demonstrates typical venous angioma of the right cerebellar hemisphere. -
Figure A2.3.4Close-up of a sagittal T1 –weighted image shows large abnormal area of low signal extending through the pons posteriorly and inferiorly toward the fourth ventricle. This corresponds to the abnormality (vascular flow void) seen on images in Figure -
Figure A2.3.5Close-up lateral view of the venous phase from conventional angiogram demonstrates a large venous angioma in a transpontine location. This contrast-enhanced vascular structure corresponds to the abnormality seen on the previous three images (Figures -
Figure A2.3.6A sagittal T1 –weighted image with gadolinium shows venous angioma extending in periventricular area from the anterior portion of the lateral ventricle posteriorly into the lateral ventricle. From same patient as image shown in Figure -
Figure A2.3.7A sagittal T1 –weighted image shows abnormal flow voids paralleling superior aspect of the ventricle. It may be easy to overlook venous angiomas on T1 -weighted images without gadolinium. -
Figure A2.3.8Coned lateral view of the venous phase from conventional cerebral angiogram. This demonstrates a typical venous angioma with a “carrot's top” appearance and mirrors the appearance seen on a sagittal MRI or MRV. Multiple radicles converge on an anomalous dilated vein which in turn drains into dilated central venous structures.
Literature Cited
| Literature Cited | |
| Dillon, W.P. 1997. Cryptic vascular malformations: Controversies in terminology, diagnosis, pathophysiology, and treatment. Am. J. Neuroroentgenol. 18:1839-1846. | |
| Fischbein, N.J., Dillon, W.P., and Barkovich, A.J. 2000. Teaching Atlas of Brain Imaging, pp. 282-285. Thieme Medical Publishers, New York. | |
| Glendhill, K., Moore, K.R., Jacobs, M., and Orrison, W.W. Jr., 2000. Chapter 21. In Neuroimaging (W.W. Orrison, Jr., ed.) pp.750-752. W.B. Saunders, Philadelphia. | |
| Rigamonti, D., Spetzler, R.F., Medina, M., et al. 1998. Cerebral venous malformations. J. Neurosurg. 73:560-564. | |
| Rothfus, W.E., Albright, A.L, Caey, K.F., et al. 1984. Cerebellar venous angioma: “Benign” entity . Am. J. Neuroroentgenol. 5:61-66. | |
| Shellock, F.G. 2001. Pocket Guide to MR Procedures and Metallic Objects. Lippincott-Raven, Philadelphia. | |
| Truwit, C.L. 1992. Venous angioma of the brain: History, significance, and imaging findings. Am. J. Roentgenol. 159:1299-1307. | |
| Key References | |
| Dillon, 1997. See | |
| The author presents a broad overview of intracranial vascular malformations with regard to terminology, diagnosis, pathophysiology and treatment. Like opening Pandora's box we find things are more complicated than we had first thought. | |
Editorial announcements
Troubleshooting Tips
|
TOOLS & CALCULATORS |
Join the Conversation
Post new comment