In clinical practice, DSA is a well-known gold standard modality for the follow-up of treated aneurysms because of its high spatial resolution, three-dimensional (3D) imaging, and dynamic information. However, the visualization of the flow of the treated site and the occlusion status in patients undergoing stent-assisted coil embolization are limited because of magnetic susceptibility artifacts. Time-of-flight MR angiography (TOF MRA) is widely used as a noninvasive substitute for digital subtraction angiography (DSA) for the follow-up of conventional coil embolization. Therefore, treated intracranial aneurysms require follow-up imaging to evaluate the occlusion status of the aneurysm. Nevertheless, there is still a risk of aneurysm recurrence with stent-assisted coil embolization due to coil compaction. The number of cases of coil embolization for aneurysms is increasing the stent-assisted technique has a wider application because it can be employed in cases that are difficult to treat with conventional coil embolization. 20%, respectively, p = 0.046).Įndovascular treatment for intracranial aneurysms has been widely used since the International Subarachnoid Aneurysm Trial. The interpretation of the status of aneurysm occlusion exhibited significantly higher sensitivity with Silent MRA than with TOF MRA when using the Neuroform Atlas stent (96.4% vs.
Silent MRA had superior image quality score to TOF MRA in the stented arteries when using Neuroform atlas (4.66 ± 0.53 vs. Silent MRA had a significantly higher image quality score than TOF MRA at the distal internal carotid artery (n = 57, 4.25 ± 0.91 vs. The average image quality scores of the Silent MRA and TOF MRA were 4.38 ± 0.83 and 2.78 ± 1.04, respectively ( p < 0.001), with an almost perfect interobserver agreement.
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