2.5-Minute Fast Brain MRI with Multiple Contrasts in Acute Ischemic Stroke

Area of Science:

• Radiology
• Neurology
• Medical Imaging

Background:

• Acute ischemic stroke diagnosis relies on prompt and accurate imaging.
• Standard MRI protocols can be time-consuming, potentially delaying treatment.
• Novel, faster MRI techniques are needed to improve diagnostic efficiency.

Purpose of the Study:

• To evaluate the diagnostic performance of a novel 2.5-minute multi-contrast brain MRI sequence, NeuroMix.
• To compare NeuroMix's effectiveness against routine clinical MRI (cMRI) in identifying acute cerebral infarctions.

Main Methods:

• Retrospective study of adult patients with suspected acute ischemic stroke.
• Brain MRI at 3T included NeuroMix and cMRI sequences (DWI/ADC, T2-FLAIR, etc.).
• Three radiologists independently assessed infarct detection and associated abnormalities, calculating sensitivity, specificity, and AUC.

Main Results:

• NeuroMix showed high sensitivity (94-100%) and specificity (90-100%) for acute infarct detection, comparable to cMRI.
• Area Under the Curve (AUC) values for NeuroMix were excellent (.95-.97), similar to cMRI (.97-1).
• Strong correlations were found between NeuroMix and cMRI for relative DWI (R=0.73) and T2-FLAIR (R=0.83).

Conclusions:

• The fast multi-contrast MRI NeuroMix sequence exhibits high diagnostic performance for acute cerebral infarctions.
• NeuroMix offers a time-efficient alternative with diagnostic capabilities comparable to standard MRI protocols.
• This rapid MRI technique holds promise for improving the diagnosis of acute stroke.