Portable MRI scanners can cut carbon emissions and keep more patients closer to home in remote Canadian communities. A new study from Queen's University looked at a suitcase-sized 64-millitesla scanner at Weeneebayko General Hospital in Moose Factory, Ontario. It found the portable unit is roughly 12 to 17 times more energy efficient per scan than fixed 1.5T and 3T MRI systems, and that avoiding patient flights is the biggest environmental win. Across 100 scans per year, the study estimates 19.7 to 24.3 tons of CO2 saved annually. Most of that comes from preventing 56 round trips to distant hospitals. The scanner also avoids helium use, heavy copper shielding, and most gadolinium contrast agents. It cannot replace conventional MRI for complex cases, but for triage and diagnosis in fly-in communities it offers a meaningful carbon and health equity benefit.
