[Magnetic resonance tomography in the follow-up after the embolization of arteriovenous malformations of the central nervous system].

Abstract

Interventional embolisation is an accepted treatment for intracranial or spinal arteriovenous malformations. Since multiple embolizations are often required, noninvasive repeatable follow-up studies are desirable. The aim of this study is to demonstrate the usefulness of T2-weighted images, MR angiography, and gadolinium-DTPA first-pass studies for post-embolisation follow-up studies. Five patients with arteriovenous malformations, four cerebral and one spinal, were studied prospectively before and repeatedly after single or multiple embolizations. A total of 26 MRI studies (1.5 T Magnetom, Siemens AG) were performed. The combination of T2-weighted images, MR angiography, and gadolinium-DTPA first-pass studies nicely demonstrated the arteriovenous malformations and the effect of embolisation which ranged from negligible to almost complete. While contrast-enhanced T1-weighted images and contrast-enhanced MR-angiography seemed to be of little more value than unenhanced studies, gadolinium-DTPA first-pass studies appeared to be more sensitive than T2-weighted images or MR-angiography because of their high intrinsic sensitivity to regional blood flow and volume. In the spine, T2-weighted images and MR-angiography were too insensitive to detect arteriovenous malformations, whereas gadolinium-DTPA first-pass studies sensitively detected the malformation and the changes after embolizations.

• Authors: J C Böck, H P Molsen, B Sander, R Felix
• Journal: RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin (Rofo) Vol. 157 Issue 5 Pg. 471-6 (Nov 1992) ISSN: 1438-9029 [Print] Germany
• Vernacular Title: Magnetresonanztomographie zur Verlaufskontrolle nach Embolisation arteriovenöser Malformationen des Zentralnervensystems.
• PMID: 1421188 (Publication Type: Case Reports, Comparative Study, English Abstract, Journal Article)

Chemical References

• Contrast Media
• Organometallic Compounds
• Pentetic Acid
• Gadolinium
• Gadolinium DTPA

Topics

• Adult
• Contrast Media
• Embolization, Therapeutic (statistics & numerical data)
• Female
• Follow-Up Studies
• Gadolinium
• Gadolinium DTPA
• Humans
• Intracranial Arteriovenous Malformations (diagnosis, epidemiology, therapy)
• Magnetic Resonance Imaging (instrumentation, methods, statistics & numerical data)
• Organometallic Compounds
• Pentetic Acid
• Prospective Studies
• Time Factors