首页|University of Helsinki and Helsinki University Hospital Reports Find- ings in Thrombectomy (Factors influencing the reliability of a CT angiography-based deep learning method for infarct volume estima- tion)
University of Helsinki and Helsinki University Hospital Reports Find- ings in Thrombectomy (Factors influencing the reliability of a CT angiography-based deep learning method for infarct volume estima- tion)
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New research on Surgery - Thrombectomy is the subject of a report. According to news reporting originating from Helsinki, Finland, by NewsRx correspondents, research stated, "CT angiography (CTA)-based machine learning methods for infarct volume estimation have shown a tendency to overestimate infarct core and final infarct volumes (FIV). Our aim was to assess factors influencing the reliability of these methods." Our news editors obtained a quote from the research from the University of Helsinki and Helsinki Univer- sity Hospital, "The effect of collateral circulation on the correlation between convolutional neural network (CNN) estimations and FIV was assessed based on the Miteff system and hypoperfusion intensity ratio (HIR) in 121 patients with anterior circulation acute ischaemic stroke using Pearson correlation coefficients and median volumes. Correlation was also assessed between successful and futile thrombectomies. The timing of individual CTAs in relation to CTP studies was analysed. The strength of correlation between CNN estimated volumes and FIV did not change significantly depending on collateral status as assessed with the Miteff system or HIR, being poor to moderate (=0.09-0.50). The strongest correlation was found in patients with futile thrombectomies (=0.61). Median CNN estimates showed a trend for overestimation compared to FIVs. CTA was acquired in the mid arterial phase in virtually all patients (120/121). This study showed no effect of collateral status on the reliability of the CNN and best correlation was found in patients with futile thrombectomies. CTA timing in the mid arterial phase in virtually all patients can explain infarct volume overestimation."
HelsinkiFinlandEuropeAngiographyCardiologyCardiovas- cular Diagnostic TechniquesCyborgsEmerging TechnologiesHealth and MedicineMachine LearningSurgeryThrombectomy
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