MT is more laborious and shows more procedural complications in BAO than in anterior circulation strokes. The likelihood of futile recanalization is higher in BAO and is associated with greater age and longer procedure duration. A refinement of endovascular procedures for BAO might help optimize the results.

Esta es la versión de autor del artículo publicado en: This is an author produced version of a paper published in:Neuroradiology 58.5 (2016) In an adjusted model, baseline CTA-SI-ASPECTS was inversely related to the odds of futile recanalization (OR 0.5; 95 % CI 0.3-0.7), whereas NCCT-ASPECTS was not (OR 0.8; 95 % CI 0.5-1.2). A score ≤5 in CTA-SIASPECTS was the best cut-off to predict futile recanalization (sensitivity 35 %; specificity 97 %; positive predictive value 86 %; negative predictive value 77 %).Conclusions CTA-SI-ASPECTS strongly predicts futile recanalization and could be a valuable tool for treatment decisions regarding the indication of revascularization therapies.Keywords Ischemic stroke . CT-angiography . IntroductionEarly recanalization of the occluded vessel is crucial in improving the prognosis of acute ischemic stroke. However, despite achieving successful and prompt . However, the usefulness of this score for treatment decisions has been debated as it has modest inter-rater reliability, and the majority of recent trials of MT excluded patients with poorer baseline ASPECTS score [6]. ASPECTS on CT angiography source images (CTA-SIASPECTS) has been shown to be a more accurate predictor of outcome and final infarct volume in acute ischemic stroke [7,8]. CTA is recommended for the assessment of site of occlusion and vessel anatomy of acute stroke patients who are potential candidates for endovascular treatment [9], CTA data being available in the majority of these patients during their initial evaluation. The aim of this study is to assess whether baseline CTA-SI-ASPECTS might help predict response to treatment and can reliably predict futile recanalization in patients undergoing reperfusion therapies; the intention being to find a reliable tool for treatment decision making.