We have a large clinical experience (>500 patients) with the ultra-low-field, portable brain MRI (Swoop Portable MR Imaging System, Hyperfine; www.hyperfine.io). This video article gives an overview of the scanner characteristics, scan procedure, and representative clinical images obtained from our experience. The portable MRI system is a useful adjunct to high-field MRI for critically ill patients, avoiding the time and risks associated with moving critically ill patients and their life supp…