Follow-up of intracranial aneurysms treated with stent-assisted coiling: Comparison of contrast-enhanced MRA, time-of-flight MRA, and digital subtraction angiography

Marciano, David; Soize, Sébastien; Μεταξάς, Γεώργιος; Portefaix, Christophe; Piérot, Laurent

doi:10.1016/j.neurad.2016.10.004

Cited by 31 publications

(33 citation statements)

References 32 publications

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“…However, MRA is a safe and convenient imaging modality, and there have been various studies reporting the usefulness of MRA in post-SAC follow-up. [3][4][5][6][7][8][9][10] With recent advances in techniques, silent MRA was developed to reduce the magnetic susceptibility of stents and coils by facilitating the visualization of blood vessels without the influence of metal artifacts. …”

Section: Discussionmentioning

confidence: 99%

“…3D time-of-flight MRA (3D-TOF MRA) has been routinely performed as a more noninvasive assessment of cerebrovascular disorder in comparison with DSA. [5][6][7][8] However, because the inherent presence of metal artifacts makes evaluation of the stent lumen, intra-aneurysmal area, and cervical region difficult, followup DSA has been considered the gold standard. DSA likewise involves drawbacks such as the risks of a catheter procedure, radiation exposure, potential contrast medium allergy, and difficulty in readily performing the procedure on an outpatient basis.…”

Section: Introductionmentioning

confidence: 99%

“…3) In addition, the usefulness of 3.0T contrast-enhanced MRA (CE-MRA) has been reported, but again there is an inherent risk of contrast medium allergy. 6,7) Recently, silent scan MRA (Silent MRA; GE Healthcare, Milwaukee, WI, USA) was reported as a non-CE-MRA technique with capabilities such as ultra-short time of echo (UTE) and arterial spin labeling (ASL). [1][2][3][4] Its usefulness for post-SAC follow-up has been suggested; however, expensive hardware renewal is necessary.…”

Section: Introductionmentioning

confidence: 99%

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Blood Flow Assessment of the Neck-bridged Stent Lumen after Stent-assisted Coiling Using 3D-TOF MRA

Mitsui

Kubota

Izumi

et al. 2018

JNET

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Purpose:We evaluated the efficacy of 3D time-of-flight MRA (3D-TOF MRA) using parameters optimized to reduce metal artifacts in follow-up imaging of cerebral aneurysm treatment by stent-assisted coiling (SAC). Methods:The radiological data from seven patients (eight aneurysms) who underwent SAC for unruptured cerebral aneurysms were retrospectively analyzed. Standard MRA (normal TOF: N-TOF) and stent-mode TOF (S-TOF) imaging using various parameters, such as the flip angle, were performed to compare the signal intensity of the parent blood vessel and the stent lumen.Results: Stent lumen vascular signal intensity for S-TOF was significantly higher than N-TOF in patients with stent alone (P = 0.012, <0.05). The mean signal reduction rate for LVIS Jr. (Terumo Corporation, Tokyo, Japan) was 39.0% ± 9.6%.For similar size stents signal reduction ranged from 26.1% to 48.9%. The signal reduction rate for double LVIS coiling was 73.2%. Although the size of the neck remnant was overestimated in some patients, it was possible to detect a slow flow volume at the aneurysm neck in all patients.Conclusion: 3D-TOF MRA for blood flow assessment facilitated the visual recognition of the stent lumen after SAC.Confirmations of aneurysmal neck remnants were also possible. However, the results suggest that differences in the mesh intervals for similar sized braided stents influenced the signal intensity, leading to overestimation of residual aneurysm. This should be further investigated in future studies.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Blood Flow Assessment of the Neck-bridged Stent Lumen after Stent-assisted Coiling Using 3D-TOF MRA

Mitsui

Kubota

Izumi

et al. 2018

JNET

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“…Until recently, the gold standard technique has been catheter-based DSA that is usually performed at either 3 In follow-up of intracranial aneurysms treated with endovascular coil occlusion, two different MRA techniques (3D-TOF-MRA and CE-MRA) are discussed (18). Most have reported the superiority of CE-MRA (3,12). CE-MRA has been shown to be as accurate as conventional catheter-based cerebral angiography.…”

Section: █ Discussionmentioning

confidence: 99%

“…CE-MRA has replaced DSA for this purpose in many institutions. Several studies have compared CE-MRA to DSA and have shown that CE-MRA is an accurate technique to reveal aneurysmal remnants and re-canalization after endovascular coiling (12,17,21). On the other hand, some studies also showed lower sensitivities of CE-MRA compared with the TOF-MRA for the detection of residual neck or residual aneurysm.…”

Section: █ Discussionmentioning

confidence: 99%

Comparison of tof mra, contrast-enhanced mra and subtracted cta from ctp in residue evaluation of treated intracranial aneurysms

Dündar¹,

Aralaşmak²,

Özdemir³

et al. 2017

Turkish Neurosurgery

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Perfusion abnormality was noted in % 81 of clipped and none of coiled patients. Vessel visualization in the vicinity of aneurysm was better in sub-CTA, followed by CE-MRA. In clipped aneurysms, sub-CTA revealed residue aneurysms in % 16,7 of the patients while 3D-TOF-MRA and CE-MRA revealed none. In coiled aneurysms, CE-MRA revealed residue aneurysms in 100 %, and TOF-MRA in 33,3 % while sub-CTA revealed none. Although dramatic differences were noted in the evaluation of residue aneurysm as well as nearby vessel visualization, no statistical significance noted due to very few patients in subcategories Conclusion: This is first study comparing the effectiveness of CE-MRA, 3D-TOF MRA and sub-CTA in residue aneurysms evaluation. Vessel visualization in the vicinity of aneurysm was better in sub-CTA in all regardless of coiling or clipping. Residue aneurysms were more commonly revealed by CE-MRA in coiled patients and more commonly and better shown by sub-CTA in clipped patients in addition of showing perfusion abnormality that's is more common in clipped patients.

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The clinical value of ceMRA versus DSA for follow-up of intracranial aneurysms treated by coil embolization: an assessment of occlusion classifications and impact on treatment decisions

et al. 2020

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Follow-up of intracranial aneurysms treated with stent-assisted coiling: Comparison of contrast-enhanced MRA, time-of-flight MRA, and digital subtraction angiography

Cited by 31 publications

References 32 publications

Blood Flow Assessment of the Neck-bridged Stent Lumen after Stent-assisted Coiling Using 3D-TOF MRA

Blood Flow Assessment of the Neck-bridged Stent Lumen after Stent-assisted Coiling Using 3D-TOF MRA

Comparison of tof mra, contrast-enhanced mra and subtracted cta from ctp in residue evaluation of treated intracranial aneurysms

The clinical value of ceMRA versus DSA for follow-up of intracranial aneurysms treated by coil embolization: an assessment of occlusion classifications and impact on treatment decisions

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