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A Magnetic Resonance Imaging Protocol for Stroke Onset Time Estimation in Permanent Cerebral Ischemia
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A Magnetic Resonance Imaging Protocol for Stroke Onset Time Estimation in Permanent Cerebral Ischemia

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Reliability of fast magnetic resonance imaging for acute ischemic stroke patients using a 1.5-T scanner

Mi Sun Chung1, Ji Ye Lee2, Seung Chai Jung3

  • 1Department of Radiology, Chung-Ang University Hospital, Seoul, South Korea.

European Radiology
|November 14, 2018
PubMed
Abstract

Insights

Fast MRI at 1.5 T reliably detects and characterizes acute ischemic stroke, offering a quicker alternative to conventional MRI. This advanced imaging technique shows high agreement with standard methods, improving diagnostic efficiency.

Area of Science:

  • Neurology
  • Radiology
  • Medical Imaging

Background:

  • Acute ischemic stroke diagnosis relies on timely and accurate imaging.
  • Conventional MRI sequences can be time-consuming, potentially delaying treatment.
  • Advancements in MRI technology aim to improve speed and diagnostic yield.

Purpose of the Study:

  • To evaluate the reliability of fast-scan MRI at 1.5 Tesla for diagnosing acute ischemic stroke.
  • To compare the diagnostic performance of fast MRI sequences against conventional MRI methods.
  • To assess the accuracy in detecting and characterizing stroke-related imaging findings.

Main Methods:

  • Prospective enrollment of 862 patients undergoing both fast and conventional MRI protocols.
  • Utilized various fast sequences including EPI-FLAIR, ETL-FLAIR, TR-FLAIR, EPI-GRE, parallel-GRE, and fast CE-MRA.
  • Independent assessment by two neuroradiologists comparing agreements on ischemic hyperintensity, microbleeds, vessel signs, and image quality.

Main Results:

  • High agreement (>80%) observed between fast and conventional MRI techniques.
  • Specific fast sequences (ETL-FLAIR, TR-FLAIR, parallel-GRE) demonstrated significant superiority in detecting certain stroke indicators.
  • No significant differences in overall image quality or other assessed parameters were found between methods.

Conclusions:

  • Fast MRI at 1.5 T is a reliable and effective tool for acute ischemic stroke detection and characterization.
  • This technique offers potential for reduced scan times without compromising diagnostic accuracy.
  • Fast MRI represents a valuable advancement for stroke imaging protocols.
Keywords:
Magnetic resonance angiographyMagnetic resonance imagingStroke

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