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Updated: May 29, 2026
A Magnetic Resonance Imaging Protocol for Stroke Onset Time Estimation in Permanent Cerebral Ischemia
Published on: September 16, 2017
Experimental stroke research: the contributions of in vivo MRI
Therése Kallur1, Mathias Hoehn
1In-vivo-NMR-Laboratory, Max Planck Institute for Neurological Research, D-50931 Köln, Germany. therese.kallur@biolamina.com
Abstract:
Stroke is a disease that develops from the very acute time point of first symptoms during the next several hours and further to a chronic time period of days or even weeks. During this evolution process, a whole series of pathophysiological events takes place. Therefore, the disease is characterized by a continuously changing pathophysiological pattern. In consequence, as the disease develops over time, different imaging modalities must be chosen to accurately describe the status of stroke. In the present chapter, we have divided the evolution of stroke into various dominant steps of the cascade of events, with corresponding time windows. Choice of MRI variables for depiction of the most important aspects during these time windows are presented and their information content is discussed for diagnosis and for investigations into a better understanding of the underlying mechanisms for the disease as well as the relevance of these imaging tools in success assessments for therapeutic strategies.
Insights
Stroke imaging needs change over time due to evolving pathophysiology. Magnetic resonance imaging (MRI) variables are key for diagnosis, understanding mechanisms, and assessing stroke therapies.
Area of Science:
- Neurology
- Radiology
- Pathophysiology
Background:
- Stroke is a dynamic neurological event with evolving pathophysiological processes.
- The disease progression spans acute, subacute, and chronic phases, each with unique characteristics.
- Accurate stroke assessment requires adapting diagnostic tools to the disease's temporal evolution.
Purpose of the Study:
- To outline the temporal evolution of stroke pathophysiology.
- To identify optimal imaging modalities and specific Magnetic Resonance Imaging (MRI) variables for different stroke phases.
- To discuss the utility of these imaging choices for diagnosis, mechanistic understanding, and therapeutic strategy evaluation.
Main Methods:
- Review and synthesis of current literature on stroke evolution and neuroimaging.
- Categorization of stroke progression into distinct pathophysiological stages with associated time windows.
- Selection and discussion of relevant MRI sequences and parameters for each stage.
Main Results:
- Stroke evolution is characterized by a cascade of events occurring over specific time windows.
- Different imaging modalities, particularly MRI, provide distinct insights at various stages of stroke.
- Specific MRI variables are crucial for accurately depicting stroke status, aiding diagnosis and treatment assessment.
Conclusions:
- The choice of neuroimaging, especially MRI, must be tailored to the stroke's temporal phase for optimal diagnostic and prognostic value.
- Understanding the changing pathophysiological landscape of stroke is essential for selecting appropriate imaging biomarkers.
- Advanced MRI techniques are vital for unraveling stroke mechanisms and evaluating the efficacy of therapeutic interventions.
