Clinical Experience of 1-Minute Brain MRI Using a Multicontrast EPI Sequence in a Different Scan Environment

Area of Science:

• Radiology
• Medical Imaging
• Neuroimaging

Background:

• Long scan times limit clinical neuroimaging with MRI.
• Rapid MRI acquisition is crucial for broader applications.

Purpose of the Study:

• To assess the clinical feasibility of a 1-minute full-brain MRI using a multicontrast Echo Planar Imaging (EPI) sequence.
• To compare the image quality and artifacts of this rapid sequence against routine MRI protocols.

Main Methods:

• Retrospective review of 146 patients undergoing multicontrast EPI sequences (T1-FLAIR, T2-FLAIR, T2WI, DWI, T2*WI).
• Image quality and artifact assessment by two neuroradiologists.
• Statistical comparison using Wilcoxon signed rank and McNemar tests.

Main Results:

• The 1-minute EPI sequence generally achieved sufficient image quality ( >2/4 points).
• Diffusion-weighted imaging (DWI) showed non-inferiority in image quality and artifacts compared to routine DWI (P > .05).
• Significant differences in image quality were observed for the other four sequences compared to routine protocols.

Conclusions:

• The 1-minute EPI sequence offers a shorter scan time and sufficient image quality for specific clinical scenarios.
• It cannot entirely substitute routine MRI protocols due to limitations in image quality and susceptibility artifacts.
• Potential applications include screening, time-critical conditions, and imaging patients with motion intolerance.