A system and method for transporting a hyperpolarized substance is disclosed. A transport vessel 100 for transporting such a hyperpolarized substance includes a vessel housing 102, a chamber 104 formed within the vessel housing 102 that is configured to receive a container 106 holding a hyperpolarized substance, and an electromagnet 112 configured to generate a magnetic containment field about the chamber 104 when a current is supplied thereto, the magnetic containment field comprising a homogeneous magnetic field. The transport vessel 100 also includes a non-magnetic power source 118 to supply the current to the electromagnet and a control circuit 120 configured to selectively interrupt the supply of current to the electromagnet 112 so as to control generation of the magnetic containment field, with the transport vessel 100 being magnetically inert when the supply of current to the electromagnet 112 is interrupted by the control circuit 120.
