scholarly journals Long-Term Prospective Follow-Up of Intracranial Aneurysms Treated with Endovascular Coiling Using Contrast-Enhanced MR Angiography

2010 ◽  
Vol 31 (7) ◽  
pp. 1211-1215 ◽  
Author(s):  
J.J.S. Shankar ◽  
C. Lum ◽  
N. Parikh ◽  
M. dos Santos
Keyword(s):  
Intracranial Aneurysms ◽  
Mr Angiography ◽  
Endovascular Coiling ◽  
Contrast Enhanced

Intracranial aneurysms treated with Guglielmi detachable coils: long-term imaging follow-up with contrast-enhanced magnetic resonance angiography

2008 ◽  
Vol 108 (3) ◽  
pp. 443-449 ◽  
Author(s):  
Jean-Yves Gauvrit ◽  
Sabine Caron ◽  
Christian A. Taschner ◽  
Jean-Paul Lejeune ◽  
Jean-Pierre Pruvo ◽  
...  
Keyword(s):  
Intracranial Aneurysms ◽  
Mr Angiography ◽  
Short Term ◽  
Contrast Enhanced ◽  
Class 1 ◽  
Complete Obliteration ◽  
Long Term Follow Up ◽  
Detachable Coils

Object The aim of this study was to assess the long-term results of intracranial aneurysms treated with Guglielmi detachable coils (GDCs) with the aid of contrast-enhanced magnetic resonance (MR) angiography. Methods Between January 1998 and August 2001, 92 patients with 92 aneurysms treated by endovascular coiling with GDCs underwent contrast-enhanced MR angiography. These patients underwent long-term follow-up (range 32–78 months, mean 42.1 ± 11.9 months [standard deviation]) after endovascular treatment. All images were compared with digital subtraction angiograms and contrast-enhanced MR angiograms that had been obtained during the short-term follow-up (range 5–25 months, mean 13 ± 5.1 months after treatment). The MR angiograms were analyzed independently by 2 senior radiologists. Findings were assigned to 1 of 3 categories: complete obliteration (Class 1), residual neck (Class 2), or residual aneurysm (Class 3). Results Of 92 contrast-enhanced MR angiograms obtained at the long-term follow-up, complete obliteration of the aneurysm was noted in 57 patients (Class 1), a residual neck was seen in 22 (Class 2), and a residual aneurysm was observed in 13 (Class 3). One patient experienced aneurysm rehemorrhaging during the follow-up period. The comparison of short- and long-term follow-up angiograms demonstrated a change in aneurysm classification in 7 patients (7.6%), including 4 that progressed from Class 1 to Class 2 and 3 from Class 2 to Class 3. However, 4 (14.2%) of the 28 long-term recurrences were not detected on the short-term control images. Conclusions Long-term follow-up with contrast-enhanced MR angiography after selective embolization of intracranial aneurysms can identify late aneurysm recanalization that is undetected at short-term follow-up.

Follow-up of intracranial aneurysms treated by a WEB flow disrupter: a comparative study of DSA and contrast-enhanced MR angiography

2015 ◽  
Vol 8 (6) ◽  
pp. 615-620 ◽  
Author(s):  
Benjamin Mine ◽  
Illario Tancredi ◽  
Ali Aljishi ◽  
Faisal Alghamdi ◽  
Margarita Beltran ◽  
...  
Keyword(s):  
Comparative Study ◽  
Intracranial Aneurysms ◽  
Mr Angiography ◽  
Interobserver Agreement ◽  
Mean Delay ◽  
Contrast Enhanced ◽  
Woven Endobridge

ObjectiveTo compare contrast-enhanced MR angiography (CE-MRA) and DSA for the follow-up of intracranial aneurysms (IAs) treated with the Woven EndoBridge embolization system DL (WEB DL; Sequent Medical, Aliso Viejo, California, USA).Materials and methodsWe retrospectively identified all patients treated with a WEB DL between November 2010 and February 2013 in 2 hospitals. The IA occlusion was graded on follow-up CE-MRA and DSA by 4 independent readers and by 2 readers reaching a consensus, respectively. Interobserver agreement for MRA and intertechnique agreement was evaluated by calculating linear weighted κ.ResultsFifteen patients with 16 IAs were included. Mean delay between MRA and DSA was 2 months (range 0–16 months). Interobserver agreement for MRA was substantial to almost perfect (κ=0.686–0.921; mean κ=0.809). Intertechnique agreement was moderate to substantial (κ=0.579–0.724; mean κ=0.669). Only three out of five inadequately occluded IAs were detected by MRA.ConclusionsCE-MRA is a useful tool for the follow-up of IAs treated with a WEB DL. However, early follow-up with DSA remains mandatory to detect inadequately occluded IAs.

scholarly journals A Prospective Trial of 3T and 1.5T Time-of-Flight and Contrast-Enhanced MR Angiography in the Follow-Up of Coiled Intracranial Aneurysms

2009 ◽  
Vol 31 (5) ◽  
pp. 912-918 ◽  
Author(s):  
T.J. Kaufmann ◽  
J. Huston ◽  
H.J. Cloft ◽  
J. Mandrekar ◽  
L. Gray ◽  
...  
Keyword(s):  
Intracranial Aneurysms ◽  
Mr Angiography ◽  
Prospective Trial ◽  
Time Of Flight ◽  
Contrast Enhanced

Long-Term Follow-Up of Intracranial Aneurysms Treated With Endovascular Coiling

2012 ◽  
Vol 46 (4) ◽  
pp. 325-328 ◽  
Author(s):  
Peter Lindvall ◽  
Ljubisa Borota ◽  
Richard Birgander ◽  
Per Jonasson ◽  
Per-Åke Ridderheim
Keyword(s):  
Intracranial Aneurysms ◽  
Endovascular Coiling ◽  
Long Term Follow Up

scholarly journals Stability of Intracranial Aneurysms Adequately Occluded 6 Months after Coiling: A 3T MR Angiography Multicenter Long-Term Follow-Up Study

2008 ◽  
Vol 29 (9) ◽  
pp. 1768-1774 ◽  
Author(s):  
M.E. Sprengers ◽  
J. Schaafsma ◽  
W.J. van Rooij ◽  
M. Sluzewski ◽  
G.J.E. Rinkel ◽  
...  
Keyword(s):  
Intracranial Aneurysms ◽  
Mr Angiography ◽  
Follow Up Study ◽  
Long Term Follow Up ◽  
3T Mr

scholarly journals The significant impact of framing coils on long-term outcomes in endovascular coiling for intracranial aneurysms: how to select an appropriate framing coil

2016 ◽  
Vol 125 (3) ◽  
pp. 705-712 ◽  
Author(s):  
Wataru Ishida ◽  
Masayuki Sato ◽  
Tatsuo Amano ◽  
Yuji Matsumaru
Keyword(s):  
Multivariate Analysis ◽  
Packing Density ◽  
Intracranial Aneurysms ◽  
Endovascular Coiling ◽  
Long Term Outcomes ◽  
Aneurysm Size ◽  
Unruptured Intracranial Aneurysms ◽  
Coil Volume

OBJECTIVE The importance of a framing coil (FC)—the first coil inserted into an aneurysm during endovascular coiling, also called a lead coil or a first coil—is recognized, but its impact on long-term outcomes, including recanalization and retreatment, is not well established. The purposes of this study were to test the hypothesis that the FC is a significant factor for aneurysmal recurrence and to provide some insights on appropriate FC selection. METHODS The authors retrospectively reviewed endovascular coiling for 280 unruptured intracranial aneurysms and gathered data on age, sex, aneurysm location, aneurysm morphology, maximal size, neck width, adjunctive techniques, recanalization, retreatment, follow-up periods, total volume packing density (VPD), volume packing density of the FC, and framing coil percentage (FCP; the percentage of FC volume in total coil volume) to clarify the associated factors for aneurysmal recurrence. RESULTS Of 236 aneurysms included in this study, 33 (14.0%) had recanalization, and 18 (7.6%) needed retreatment during a mean follow-up period of 37.7 ± 16.1 months. In multivariate analysis, aneurysm size (odds ratio [OR] = 1.29, p < 0.001), FCP < 32% (OR 3.54, p = 0.009), and VPD < 25% (OR 2.96, p = 0.015) were significantly associated with recanalization, while aneurysm size (OR 1.25, p < 0.001) and FCP < 32% (OR 6.91, p = 0.017) were significant predictors of retreatment. VPD as a continuous value or VPD with any cutoff value could not predict retreatment with statistical significance in multivariate analysis. CONCLUSIONS FCP, which is equal to the FC volume as a percentage of the total coil volume and is unaffected by the morphology of the aneurysm or the measurement error in aneurysm length, width, or height, is a novel predictor of recanalization and retreatment and is more significantly predictive of retreatment than VPD. To select FCs large enough to meet the condition of FCP ≥ 32% is a potential relevant factor for better long-term outcomes. These findings support our hypothesis that the FC is a significant factor for aneurysmal recurrence.

scholarly journals CE-MRA for Follow-up of Aneurysms Post Stent-Assisted Coiling

2012 ◽  
Vol 18 (3) ◽  
pp. 275-283 ◽  
Author(s):  
R. Agid ◽  
M. Schaaf ◽  
Ri. Farb
Keyword(s):  
Cerebral Angiography ◽  
Intracranial Aneurysms ◽  
Mr Angiography ◽  
Cerebral Aneurysms ◽  
Parent Artery ◽  
Small Artery ◽  
Luminal Diameter ◽  
Contrast Enhanced ◽  
Marker Band

This study compared the accuracy of contrast-enhanced MR angiography (CE-MRA) to intraarterial cerebral angiography (IA-DSA) for assessment of intracranial aneurysms after stent-assisted coiling and to check if the presence of a stent in the parent artery diminishes the accuracy of CE-MRA. Consecutive patients with cerebral aneurysms treated by stent-assisted coiling were evaluated retrospectively. Matching follow-up CE-MRA and IA-DSA were evaluated separately. Evaluation included the presence of aneurysmal remnant, patency and stenosis of parent artery. Twenty-seven patients with 28 aneurysms and 33 matched CE-MRA and IA-DSA studies were evaluated. Nineteen aneurysmal remnants were seen on CE-MRA and 16 on IA-DSA. CE-MRA diagnosed three aneurysmal remnants not appreciated on IA-DSA. Five other remnants were larger on CE-MRA than IA-DSA. None of the remnants were missed on CE-MRA. Parent arteries were patent on both modalities. CE-MRA showed false stenosis of the stented artery in six cases and exaggerated stenosis in two. In 18 cases, CE-MRA showed a short focal “pseudo-stenosis” where the stent's marker bands were located. This was noted whenever the stent's marker bands were located in an artery with luminal diameter ≤2 mm and was called “marker band effect”. CE-MRA is an accurate technique for follow-up of aneurysms post stent-assisted coiling with excellent depiction of remnants in spite of the presence of a stent. Apparent stenosis of the stented parent artery on CE-MRA is often false or exaggerated. “Marker band effect” should be recognized as an artifact that appears when stent's marker bands are in a small artery.

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