A first 3D negative-contrast MR image using a low-Tc SQUID detection: towards portable clinical MRI

Motivation: At Chipiron we strive to develop the first commercial portable ultra-low field MRI scanner based on SQUID detection. Goal(s): Here, we aimed to acquire a first 3D image using SQUID-MRI at 1 mT. Approach: Using our own integrated SQUID-MRI system, we scanned a hand-made water based phantom using a GRE sequence. Results: We successfully acquired a 3D image of a phantom in 6 h with a resolution of 5x5x40 mm3. Impact: Aspiring to democratise MRI, we develop a portable ultra-low field scanner that leverages the high sensitivity of SQUID detection. Our first 3D image is just the first step that paves the way to achieving competitive image quality for clinical employment.