AJDRAJNR - American Journal of Neuroradiology

This Article
Right arrow Abstract Freely available
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Pierot, L.
Right arrow Articles by Gallas, S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Pierot, L.
Right arrow Articles by Gallas, S.

Follow-Up of Intracranial Aneurysms Selectively Treated with Coils: Prospective Evaluation of Contrast-Enhanced MR Angiography

L. Pierota, C. Delcourta, F. Bouquignya, D. Breidta, B. Feuilleta, O. Lanoixa and S. Gallasa

a From the Service de Radiologie, Hôpital Maison-Blanche, Reims cedex, France


Figure 1
View larger version (68K):

[in a new window]
  		Fig 1. Top of right carotid ophthalmic aneurysm treated by endovascular coiling in a 49-year-old woman.

A, 3D TOF MRA transverse source image shows a hypersignal around the aneurysm (arrow).

B, 3D TOF MIP anterior projection shows a hypersignal in the projection of the packing coil.

C, DSA right carotid angiogram, lateral view, shows no recanalization of the sac. Magnetic susceptibility was responsible for unclear TOF MRA imaging.


Figure 2
View larger version (110K):

[in a new window]
  		Fig 2. Left middle cerebral artery aneurysm 3 mm wide treated by endovascular coiling. Note a residual aneurysm (arrow).

A and B, 3D TOF MRA transverse source image and MIP anterior projection show the clear visualization of the small treated aneurysm and remnant flow.

C and D, CE-MRA source image and MIP anterior projection show that the packing coil is difficult to locate because venous enhancement affects image interpretation.

E, DSA left carotid angiogram, anterior view, shows residual aneurysm.


Figure 3
View larger version (58K):

[in a new window]
  		Fig 3. Giant aneurysm with no neck, incompletely treated with coils. A large residual flow is present inside the aneurysmal sac.

A, 3D TOF transverse source image shows that the signal intensity inside the treated giant aneurysm (arrow) is degraded. The limits of residual flow are not clear between the strong flow signal intensity, the intermediate slow or turbulent flow signal intensity, and the intermediate blood clot signal intensity.

B and C, CE-MRA source image and MIP anterior projection show that the remnant aneurysm is clearly defined and the visualization of the carotid branch conformation with the aneurysm is better.

D, DSA right carotid angiogram, anterior view, shows large residual aneurysm.


Figure 4
View larger version (89K):

[in a new window]
  		Fig 4. Source imaging shows treated aneurysm of the right posterior communicating artery.

A, 3D TOF MRA transverse source image affords clear visualization of the low signal intensity of the coiling pack and the presence of a residual neck (arrow), but with CE-MRA source image (B), no delimitation is possible. DSA image confirms the presence of a residual neck (arrow, C).


Figure 5
View larger version (63K):

[in a new window]
  		Fig 5. In a 25-year-old woman, a ruptured top carotid aneurysm treated during the acute phase by total occlusion and follow-up imaging 1 year later.

A, 3D TOF MIP anterior projection. B, Contrast-enhanced MR MIP anterior projection. C, DSA intracranial right carotid TOF MRA and CE-MRA (B) show concordant findings in agreement with those of DSA. DSA imaging confirms the presence of a residual neck.





Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X