Abstract: A heat sink has a structure fabricated of aluminum, with at least a portion of this structure having a surface with at least a portion thereof exposed to a device to be cooled and/or to a coolant liquid at least this portion being hard-anodized. This portion of the structure is rendered electrically insulating and/or corrosion resistant by a hard-anodized surface layer thereon.

Abstract: A portable MRI or NMR imaging system comprising a cryogen vessel housing cooled equipment, said system being housed within a transportable container, said container being divided into at least three sections. A first section provides accommodation for an operator and access to equipment as required to operate the cooled equipment. A second section houses the cryogen vessel. A third section houses auxiliary equipment required for operation of the cooled equipment but which is not required to be accessed by the operator to operate the equipment. Also provided is a cryostat comprising an outer vacuum container, itself housing a cryogen vessel for containing cooled equipment, wherein space between the cryogen vessel and the outer vacuum container is evacuated. The outer vacuum container is in the form of at least a section of a standard shipping container.

Abstract: A trailer for housing a mobile MRI system has magnetic shielding in the form of a plurality of sheets of magnetic material which are supported within the trailer, by a rigid supporting structure or frame. The layers are arranged in a stacked or laminar configuration with the laterally longest layer disposed inward of the remaining layers, such that the width of the gap between that layer and the exterior walls of the trailer at the lateral extremities of the shielding is greater than its width in a central area. The rigid frame maintains the gap and prevents contacting of the shielding and the trailer walls.