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Updated: May 13, 2026

A Magnetic Resonance Imaging Protocol for Stroke Onset Time Estimation in Permanent Cerebral Ischemia
Published on: September 16, 2017
Magnetic resonance imaging in the diagnosis of stroke
Salvador Pedraza1, Josep Puig, Sebastian Remollo
1Hospital Universitario Dr Josep Trueta, Centro de RM, IDI, Servicio de Radiología, Av de Francia sn, 17007, Girona, Spain +34 972 486 020 ; +34 972 483 085 ; spedraza@retE-mail.es.
Background:
The high morbidity and mortality of strokes result in enormous costs to our society. In the last decade advanced imaging techniques with high sensitivity in the diagnosis of acute stroke have been developed. Acute thrombolytic treatment beyond 3 h of acute stroke duration requires the demonstration of penumbra or 'tissue at risk'. However, the utility of the mismatch concept to identify the penumbra area is controversial.
Objective:
The aim is to describe the main features of acute stroke on magnetic resonance imaging.
Method:
Information was obtained from a search of the PubMed and Medline databases (keywords: imaging, stroke, diagnosis and infarct) for articles published from 1997.
Conclusion:
To conclude, new imaging biomarkers of relevant mismatch, hemorrhagic transformation and worse outcome should be developed in the future.
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