A magnetic resonance tomography apparatus includes a receiving device having a number of magnetic resonance receive antennas for receiving a magnetic resonance signal in response to a radio frequency signal transmitted at a magnetic resonance frequency. A respective magnetic resonance receive antenna is connected to a parametric mixer. A receive circuit formed hereby is provided inside the cryostat and is coupled via a contactless communication interface to an evaluation circuit provided outside the cryostat. The evaluation circuit includes a local oscillator device for generating an auxiliary signal at an auxiliary frequency. The auxiliary signal is transmitted via the contactless communication interface to the receive circuit. The receive circuit is configured such that a mixed signal having a mixed frequency is generated via the parametric mixer from the auxiliary signal and the magnetic resonance signal and transmitted via the contactless communication interface to the evaluation circuit.

Described is a local coil having a number of magnetic resonance antenna elements, a, strip-shaped, metamaterial signal conductor, and an adapter device for coupling signals into the metamaterial signal conductor and/or coupling signals out of the metamaterial signal conductor. Additionally described is a magnetic resonance system having a local coil communication interface and an adapter device for coupling signals out of a metamaterial signal conductor and transferring them to the local coil communication interface and/or for coupling signals from the local coil communication interface into a metamaterial signal conductor, and a method for transmitting signals between a local coil and a local coil communication interface of a magnetic resonance system.

A system for automatically identifying a needle insertion location from a medical diagnostic image, such as an MRI image, and providing a visual indication of the needle insertion location is disclosed. A grid plate is located proximate to an anatomical region and is preferably incorporated in an MRI support structure utilized to immobilize the anatomical region. An MRI scanner obtains an MRI image of the anatomical region, and an MRI technician places a marker on the MRI image, identifying the needle insertion location. The MRI image and the marker are transferred from the MRI scanner to another device, such as a tablet computer, which is configured to convert the MRI image and the marker to coordinates and an insertion depth. A visual indicator is located proximate to or integrated with the grid plate that provides the needle insertion coordinates and insertion depth to the MRI technician.

A method and a device for identifying a position of a local coil of a magnetic resonance imaging scanner relative to a position of a patient couch are provided. The device includes at least one reading unit that is configured to determine a position of at least one label at the local coil relative to the at least one reading unit. The device also includes a position determination apparatus that is configured to determine the position of the patient couch relative to the magnetic resonance imaging scanner. The device includes a position determination apparatus that is configured to determine the position of the local coil relative to the patient couch based on the determined position of the at least one label and the determined position of the patient couch.

A wireless magnetic resonance (MR) signal receiving system comprises a wireless MR coil (20) and a base station (50). The wireless MR coil includes coil elements (22) tuned to receive an MR signal, and electronic modules (24) each including a transceiver (30) and a digital processor (32). Each electronic module is operatively connected to receive an MR signal from at least one coil element. The base station includes a base station transceiver (52) configured to wirelessly communicate with the transceivers of the electronic modules of the wireless MR coil, and a base station digital processor (54). The electronic modules form a configurable mesh network (60) to wirelessly transmit the MR signals received by the electronic modules to the base station. The base station digital processor is programmed to operate the base station transceiver to receive the MR signals wirelessly transmitted to the base station by the configurable mesh network.

According to one embodiment, an MRI apparatus includes a first RF coil device, a radio communication unit and an image reconstruction unit. The first RF coil device is wirelessly connected to a second RF coil device, and receives a nuclear magnetic resonance signal wirelessly transmitted from the second RF coil device. The first RF coil device wirelessly transmits the nuclear magnetic resonance signal detect by the first RF coil device and the nuclear magnetic resonance signal obtained from the second RF coil device to the radio communication unit, via an induced electric field. The radio communication unit receives the nuclear magnetic resonance signals wirelessly transmitted from the first RF coil device via an induced electric field. The image reconstruction unit reconstructs image data on the basis of the nuclear magnetic resonance signals received by the radio communication unit.

An arrangement and system places an external cable into a slot. The arrangement includes a slot extending from a first end to a second end. The slot includes a recess configured to receive a cable therein. The arrangement includes a movable component configured to slide along a length of the slot. The movable component includes a first end and a second end. Sliding the movable component along the slot in a first direction from the first end to the second end of the slot one of frees a first portion of the cable from the slot or places a second portion of the cable in the slot.

A transmission line array is used for explosive/contraband detection using nuclear quadrupole resonance in which the array is driven in-phase with synchrony frequency-swept signals. Each of the balanced transmission lines is fed with a low power swept frequency source and stimulated emissions are picked out with a directional coupler. Location is provided using a cross grid array or a phase detector is used for each balanced line, with phase determining the distance to the sensed substance.

A light data communication link device (50) for use in a magnetic resonance examination system (10) comprises a first light emitter and receiver unit (52) and a second light emitter and receiver unit (76). A light generating member (54), a first optical waveguide (62) and a light diffuser (58) of the first light emitter and receiver unit (52), a distance in space between the light diffuser (58) and a converging lens (84) of the second light emitter and receiver unit (76), and the converging lens (84), a second optical waveguide (88) and a light receiving member (80) of the second light emitter and receiver unit (76) form a first optical pathway (90) for data communication. A light generating member (78), a first optical waveguide (86) and a light diffuser (82) of the second light emitter and receiver unit (76), a distance in space between the light diffuser (82) and a converging lens (60) of the first light emitter and receiver unit (52), and a converging lens (60), a second optical waveguide (64) and a light receiving member (56) of the first light emitter and receiver unit (52) form a second optical pathway (92) for data communication. At least the light generating member (54) of the first light emitter and receiver unit (52) is configured to be arranged outside a volume defined by the scanning unit (12). The second light emitter and receiver unit (76) is configured to be at least partially arranged inside the volume (30); and a magnetic resonance examination system (10) comprising such light data communication link device (50) for establishing a bi-directional data communication link between a control unit (26) of the magnetic resonance examination system (10) and at least one auxiliary electronic device (40) being arranged inside the volume (30).

A method is described for the wireless signal transmission of a measurement signal and/or a control signal between two functional components of a MR system. The measurement signal and/or the control signal is encoded into a RF transmit signal with a predefined orbital angular momentum and this RF transmit signal is transmitted between transmit antenna arrangements of the functional components. In addition, the embodiments relate to a local coil and an orbital angular momentum transmit unit with which the method may be carried out, and also a MR system that has a local coil and an orbital angular momentum transmit unit of this type.