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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
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Dynamic Perviousness Predicts Revascularization Success in Acute Ischemic Stroke
Gergely Bertalan1, Roxane Duparc1, Miklos Krepuska1
1Department of Neuroradiology, University Hospital Zürich, Frauenklinikstrasse 10, 8091 Zürich, Switzerland.
Diagnostics (Basel, Switzerland)
|March 13, 2024
Summary
Dynamic thrombus perviousness, a new CT imaging method, shows promise in predicting mechanical thrombectomy outcomes for acute ischemic stroke patients. This dynamic analysis may outperform standard perviousness measurements.
Area of Science:
- Neuroradiology
- Medical Imaging
- Stroke Research
Background:
- Thrombus perviousness on CT scans for acute ischemic stroke (AIS) has shown inconsistent predictive value for treatment outcomes.
- Previous studies on computed tomography (CT) based thrombus perviousness in AIS have yielded conflicting results.
- This research explores a novel metric, dynamic perviousness, using 3D volumetric analysis of occlusive thrombi.
Purpose of the Study:
- To evaluate the predictive potential of dynamic thrombus perviousness in acute ischemic stroke (AIS).
- To compare the efficacy of dynamic perviousness versus standard perviousness in predicting mechanical thrombectomy (MT) outcomes.
- To investigate the association between thrombus characteristics and clinical/procedural outcomes in AIS patients.
Main Methods:
- Sixty-five AIS patients with hyperdense artery sign on non-contrast CT (NCCT) undergoing mechanical thrombectomy (MT) were included.
- Thrombus attenuation increase (TAI) was calculated voxel-wise between NCCT/CT angiography (CTA) and CTA/late venous phase CT (CTV) to create perviousness maps.
- Perviousness was correlated with admission NIHSS scores, Thrombolysis In Cerebral Infarction (TICI) scores, and the number of MT passes.
Main Results:
- Higher late-uptake TAI (dynamic perviousness) was associated with lower admission NIHSS scores (p<0.05).
- Thrombi with higher dynamic perviousness required fewer MT passes (p=0.03) and were associated with successful reperfusion (TICI III, p=0.03).
- Standard thrombus perviousness did not show significant correlations with MT outcomes.
Conclusions:
- Standard 3D thrombus perviousness is not a reliable predictor of mechanical thrombectomy success in AIS.
- Dynamic perviousness, assessed via voxel-wise analysis of 3D thrombus volume, shows potential as a superior predictor of MT outcomes.
- This novel imaging approach may improve patient selection and procedural planning for AIS interventions.
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