Abstract:
An apparatus includes a magnetic apparatus that defines an actuation volume that is large enough to accommodate a sample, the magnetic apparatus including a magnet that is configured to create a magnetic field having a magnitude B in the sample when supplied with a DC current; at least one biological construct within the sample, the biological construct configured to change its status in response to a change in a property; and at least one magnetocaloric actuator coupled with the biological construct. A change in a characteristic in the actuation volume causes the property of the magnetocaloric actuator to change, which causes a change in the status of the biological construct.
Abstract:
An imaging apparatus for imaging a sample includes a magnetic apparatus that defines a sample volume that is large enough to accommodate the sample to be imaged, and one or more magnetically manipulatable materials within the sample. The magnetic apparatus includes a magnet that is configured to create a magnetic field having a magnitude B in the sample Each magnetically manipulatable material is a material that exhibits a transition between a first magnetic state and a second magnetic state in response to a change in a property associated with the sample while the magnetic field having the magnitude B is maintained in the sample.
Abstract:
Die Erfindung betrifft eine erfindungsgemäße Anordnung und ein Verfahren zur nicht-invasiven Untersuchung von zumindest Teilen der Blutbestandteile, die zur Untersuchung der Blutbestandteile auf Grundlage von zumindest einer Magnetresonanzspektroskopie eines menschlichen Körperteils, insbesondere des menschlichen Fingers, ausgestaltet ist. Ferner betrifft die Erfindung die Verwendung der Anordnung.
Abstract:
A control system for a superconducting magnet includes an electrically conductive lead having a first end electrically coupled to the superconducting magnet, at least one of a main power supply, a shimming power supply and a discharge module electrically coupled to a second end of the lead, and a controller in communication with the at least one of the main power supply, the shimming power supply and the discharge module. The controller is configured to monitor at least one magnet parameter value indicative of a state of the superconducting magnet and to automatically control operation of the at least one of the main power supply, the shimming power supply and the discharge module when the magnet parameter value crosses a predetermined threshold value prior to a quench.
Abstract:
A superconducting magnet device (14; 46), including at least one coil winding (16 1 -16 4 ) of superconducting wire, configured for generating a static magnetic field B 0 , wherein the at least one coil winding (16 1 -16 4 ) is adapted to establish a thermally conductive contact with a cold head (38) of a cryocooler that is configured for bringing to and keeping the at least one coil winding (16 1 -16 4 ) at a temperature below the critical temperature, and at least one gas-tight container (40;48) that permanently contains an amount of helium, wherein the at least one gas-tight container (40; 48) is in thermally conductive contact to the at least one coil winding (16 1 -16 4 ) for taking up thermal energy from the at least one coil winding (16 1 -16 4 ) in at least one operational state; and a magnetic resonance imaging system (10) that is configured for acquiring magnetic resonance images from at least a portion of a subject of interest (22), comprising such a superconducting magnet device (14; 46) for generating a static magnetic field B 0 in an examination space (20) of the magnetic resonance imaging system (10).
Abstract:
A low-cost, compact, and easily transportable whole-body MRI system is completely self-contained in a standard shipping container. A high-temperature superconducting magnet is conduction cooled and uses no cryogenic liquid and has a field strength between 0.5 Tesla and 1 Tesla. The superconducting magnet overcomes the complex logistics associated with shipping and installing a conventional liquid helium cooled superconducting magnet. Routine diagnostic MRI is made affordable in developing economies, or in locations where installation of conventional fixed or mobile MRIs is uneconomic or impractical.
Abstract:
A superconducting magnet system, including a cryostat, and a ride-through system for the superconducting magnet system include: one or more gravity-fed cooling tubes configured to have therein a cryogenic fluid; a first heat exchanger configured to transfer heat from the one or more gravity-fed cooling tubes to a cryocooler; a storage device having an input connected to the first heat exchanger and configured to receive and store a boiled-off gas from the first heat exchanger; and a thermal regenerator having an input connected to the output of the storage device.