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Abstract #4026

Reliability of brain volumetrics in low-field portable MRI

Thomas Campbell Arnold1, Ramya Muthukrishnan2, Steven N Baldassano1, Samantha By3, Brian Welch3, Brian Litt1,4, and Joel M. Stein5
1Bioengineering, University of Pennsylvania, Philadelphia, PA, United States, 2Computer Science, University of Pennsylvania, Philadelphia, PA, United States, 3Hyperfine Research, Guilford, CT, United States, 4Neurology, Perelman School of Medicine, Philadelphia, PA, United States, 5Radiology, Perelman School of Medicine, Philadelphia, PA, United States

A growing body of literature demonstrates the value of MRI-based volumetric measures in diagnosing and treating neurodegenerative disorders. However, clinicians cannot offer biomarker screening for at-risk patients due to MRI systems’ high cost and limited access. Low-field MRI scanners offer a potential method for collecting low-cost images that could be analyzed for longitudinal biomarker changes or used in population-level studies. Here we examine the reliability of volumetric measurements made on a low-field MRI system. We compare the variability of 6 tissue volumes collected over 40 scans for 3T and 64mT systems, as well as the overlap between volume segmentations.

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