CardioVascular and Interventional Radiology

, Volume 40, Issue 4, pp 502–509 | Cite as

Low Cerebral Blood Volume Identifies Poor Outcome in Stent Retriever Thrombectomy

  • Sara ProttoEmail author
  • Juha-Pekka Pienimäki
  • Janne Seppänen
  • Heikki Numminen
  • Niko Sillanpää
Clinical Investigation



Mechanical thrombectomy (MT) is an efficient treatment of acute stroke caused by large-vessel occlusion. We evaluated the factors predicting poor clinical outcome (3-month modified Rankin Scale, mRS >2) although MT performed with modern stent retrievers.


We prospectively collected the clinical and imaging data of 105 consecutive anterior circulation stroke patients who underwent MT after multimodal CT imaging. Patients with occlusion of the internal carotid artery and/or middle cerebral artery up to the M2 segment were included. We recorded baseline clinical, procedural and imaging variables, technical outcome, 24-h imaging outcome and the clinical outcome. Differences between the groups were studied with appropriate statistical tests and binary logistic regression analysis.


Low cerebral blood volume Alberta stroke program early CT score (CBV-ASPECTS) was associated with poor clinical outcome (median 7 vs. 9, p = 0.01). Lower collateral score (CS) significantly predicted poor outcome in regression modelling with CS = 0 increasing the odds of poor outcome 4.4-fold compared to CS = 3 (95% CI 1.27–15.5, p = 0.02). Lower CBV-ASPECTS significantly predicted poor clinical outcome among those with moderate or severe stroke (OR 0.82, 95% CI 0.68–1, p = 0.05) or poor collateral circulation (CS 0–1, OR 0.66, 95% CI 0.48–0.90, p = 0.009) but not among those with mild strokes or good collaterals.


CBV-ASPECTS estimating infarct core is a significant predictor of poor clinical outcome among anterior circulation stroke patients treated with MT, especially in the setting of poor collateral circulation and/or moderate or severe stroke.


Interventional radiology Ischemic stroke Mechanical thrombectomy Perfusion CT 



Alberta stroke program early CT score


Cerebral blood volume


Cerebral oedema


Collateral score


Internal carotid artery


Intravenous thrombolysis


Middle cerebral artery


Mechanical thrombectomy


Mean transit time


National Institutes of Health Stroke Scale


Thrombolysis in cerebral infarction


Compliance with Ethical Standards

Conflict of interest

No conflict of interest for all authors.

Ethical Approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

For this type of study, formal consent is not required.

Supplementary material

270_2016_1532_MOESM1_ESM.docx (14 kb)
Supplementary material 1 (DOCX 14 kb)


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Copyright information

© Springer Science+Business Media New York and the Cardiovascular and Interventional Radiological Society of Europe (CIRSE) 2016

Authors and Affiliations

  1. 1.Medical Imaging CenterTampere University HospitalTampereFinland
  2. 2.Department of NeurologyTampere University HospitalTampereFinland

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