Hyperfine’s Swoop Portable MRI System Evaluated for Stroke Detection Capabilities

January 28, 2026—Hyperfine, Inc. announced results from a large data set from an investigator-initiated study evaluating stroke detection with the company’s Swoop portable MRI system, which is FDA-cleared for brain imaging of patients of all ages.

The company stated that the data provide evidence supporting the use of the artificial intelligence (AI)–powered portable MRI system for stroke detection in multiple clinical settings, including the emergency department.

The study findings were published by Annabel Sorby-Adams, PhD, et al in Stroke: Vascular and Interventional Neurology.

According to Hyperfine, the prospective, multicenter, observational study was composed of 95 patients, combining data from the ACTION PMR study at Massachusetts General Hospital in Boston, Massachusetts, and Buffalo General Medical Center in Buffalo, New York, with data from Yale New Haven Hospital in New Haven, Connecticut.

The study evaluated the sensitivity and specificity of ischemic lesion detection, comparing both the original and next-generation Swoop system scanners, along with a comparison of two types of diffusion-weighted imaging (DWI) sequences.

As outlined in the company’s press release, the advanced multidirectional DWI sequence on the next-generation Swoop system achieved the following improvements in diagnostic performance versus the original scanner:

• Identified lesions were as small as 2.8 mm (0.15 mL), enabling detection of very small strokes.
• Accuracy for clinically relevant lesions was demonstrated, with 100% sensitivity and 100% specificity for lesions > 1.0 mL.
• Improved efficiency was achieved, with scan times reduced by approximately 30%, making stroke imaging feasible in time-critical emergency settings.
• Improved image uniformity was demonstrated across the brain, enhancing diagnostic confidence.