Standard MRI machines are extraordinary tools with extraordinary limitations. They cost $1.5–3 million. They weigh 10,000–25,000 lbs. They require a specially shielded room that costs $1.5 Million+ to construct. They require patients to be transported — a significant risk for critically ill ICU patients — and they have weeks-long queues in many healthcare systems. For the 80% of the world's population with limited or no access to MRI, standard MRI is effectively unavailable. Hyperfine's Swoop system changes the access equation entirely by fitting an MRI machine on a mobile cart that rolls to the patient's bedside.
The Technology: Low-Field MRI and AI Image Enhancement
Conventional clinical MRI operates at 1.5 Tesla (T) or 3T. The Swoop operates at 0.064T — about 25× lower field strength. Lower field strength means lower image resolution and signal-to-noise ratio. But Hyperfine's approach compensates with two strategies: (1) AI-powered image reconstruction algorithms that enhance signal and suppress noise in post-processing, recovering much of the diagnostic information that the lower field strength sacrifices; and (2) optimizing for clinical questions where high-resolution anatomical detail is less critical than speed, portability, and access.
At 0.064T, the Swoop produces images that are diagnostic for:
- Hemorrhagic stroke (sensitivity 93% for large hemorrhage vs. CT as reference)
- Midline shift and herniation
- Hydrocephalus
- Large ischemic territory (less sensitive for small cortical infarcts)
- Tumor presence (not characterization)
- Ventriculostomy catheter placement verification
Clinical Applications: Where Swoop Adds Value
The clinical use cases that have driven the most rapid Swoop adoption:
- Neurocritical care ICU: Serial brain imaging of ICU patients without the risk of transport. A 2024 multicenter study found that bedside portable MRI identified actionable findings (ICP elevation, new hemorrhage, developing hydrocephalus) in 41% of serial scans that were not detected on prior CT.
- Neonatal ICU: Neonatal brain MRI at term-equivalent age is the gold standard for predicting neurodevelopmental outcomes in preterm infants, but NICU transport to conventional MRI carries significant risk. Swoop enables MRI in the NICU without transport; diagnostic concordance with 3T MRI for major brain abnormalities is 91%.
- Rural and underserved hospitals: 38% of rural US hospitals have no on-site MRI access. Swoop deployment in rural emergency departments enables evaluation of acute neurological presentations that previously required transfer.
- Low- and middle-income countries: Hyperfine is partnering with the Gates Foundation and academic medical centers in sub-Saharan Africa and Southeast Asia to deploy Swoop in district hospitals that have never had MRI access.
FDA Status and Insurance Coverage
The Swoop received FDA 510(k) clearance for brain imaging in August 2020 and additional clearances for body imaging applications in 2023. In 2026, CMS reimburses portable MRI under the same CPT codes as conventional brain MRI when performed by a licensed technologist with physician oversight — enabling billing parity despite the technology difference. The reimbursement decision has been a key driver of hospital adoption.
Limitations: What Swoop Cannot Do
Low-field MRI is not a replacement for conventional 1.5T or 3T MRI. It cannot characterize tumor histology, detect small metastases (<5mm), perform functional MRI, provide detailed spinal imaging, or support MR angiography. It is a triage and monitoring tool, not a comprehensive neuroimaging platform. Patients with implanted devices including pacemakers and deep brain stimulators require standard device-compatibility screening before scanning, as with conventional MRI.
Conclusion
The Hyperfine Swoop is not trying to compete with 3T MRI — it is filling a clinical gap that 3T MRI cannot fill: point-of-care, immediate-access, bedside brain imaging for the most vulnerable and least mobile patients. In doing so, it has created a new category of neuroimaging access that is improving care in ICUs, NICUs, rural hospitals, and low-resource settings worldwide. Healthcare facilities can find relevant diagnostic equipment in our catalog.
