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A Magnetic Resonance Imaging Protocol for Stroke Onset Time Estimation in Permanent Cerebral Ischemia
Published on: September 16, 2017
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An MRI Based Ischemic Stroke Classification - A Mechanism Oriented Approach
1Department of Neurology, Government Medical College Kozhikode, Kozhikode, Kerala, India.
Annals of Indian Academy of Neurology
|March 13, 2023
Summary
This study introduces a new classification for ischemic stroke based on Diffusion-weighted magnetic resonance imaging (DW-MRI). This DW-MRI classification aids in understanding stroke mechanisms and improving patient prognostication and treatment strategies.
Area of Science:
- Neurology
- Radiology
- Medical Imaging
Background:
- Current ischemic stroke classification systems inadequately utilize advanced imaging.
- Diffusion-weighted magnetic resonance imaging (DW-MRI) offers precise detection of infarcts.
Purpose of the Study:
- To propose a novel ischemic stroke classification system based on DW-MRI patterns.
- To correlate DW-MRI infarct types with underlying stroke mechanisms.
Main Methods:
- Classifying ischemic infarcts into ten types based on DW-MRI appearance.
- Reviewing literature to link infarct types with etiological mechanisms.
Main Results:
- Proposed DW-MRI infarct types include cortical territorial, striatocapsular, superficial perforator, watershed, lacunar, LIA, BAD, corpus callosal, and infratentorial.
- Specific infarct types are associated with embolic sources, atherosclerosis, hemodynamic failure, or lipohyalinosis.
Conclusions:
- A DW-MRI-based classification is fast, easy, and mechanism-oriented.
- This classification system can improve acute stroke prognostication, investigation planning, and secondary prevention strategies.
