摘要:
Magnetic resonance tomography (MRT) local coil positioning by RFID is enabled with a positioning device to detect a position of a first object relative to a position of an additional object that includes at least one RFID tag arranged on the first object and/or at least one RFID reader arranged on the additional object.
摘要:
A magnetic resonance imaging apparatus is provided. The apparatus includes a plurality of receiving antennas for receiving a plurality of reception signals. The apparatus also includes at least one first superposition device having at least one first and one second output, which in each case serve for providing a mode formed by superposition of at least two of the reception signals. The apparatus also includes at least one first frequency division multiplex device for transmitting input signal present at a first and a second input of the frequency division multiplex device via a first transmission link on different frequency bands to a receiving unit, wherein the first output of the first superposition device is connected to the first input of the first frequency division multiplex device and the second output of the first superposition device is connected directly or indirectly to a second transmission link.
摘要:
A local coil for a magnetic resonance imaging system includes at least one former antenna and at least one further antenna. The at least one former antenna is arranged orthogonally with respect to the at least one further antenna.
摘要:
A device for identifying a local coil property of a local coil for a magnetic resonance imaging scanner includes at least one label configured to transmit at least one identity number wirelessly. The device also includes at least one reading unit with a reading-unit antenna. The reading unit is configured to receive the at least one identity number. The device includes an identification apparatus configured to identify a local coil property of the local coil based on the at least one received identity number.
摘要:
A magnetic resonance apparatus includes receive coils and a receiver device for processing magnetic resonance signals received by coil elements of the receive coils. The receive coils are subdivided into at least a first group having at least one receive coil and a second group having at least one receive coil. The receive coils of the first group are connected to the receiver device via a hardwired communications link, and the receive coils of the second group are each connectable or connected to the receiver device via a wireless communications link.
摘要:
An imaging device for a joint of a human is made of an HF transparent material. The imaging device has a base element that may be fastened to a patient bed of a magnetic resonance system. The imaging device includes a bearing element, in which a joint region of an extremity of the human may be supported when the base element is fastened to the patient bed. The bearing element and the base element are connected movably to each other by a guiding structure such that when the base element is fastened to the patient bed, the bearing element may be positioned in a plurality of defined positions relative to the base element.
摘要:
A local coil for an imaging system, in particular an MRI scanner. The local coil is an MRI scanner local coil within which the head of a patient may be positioned, and that includes at least one shim coil.
摘要:
A magnetic resonance device includes at least one gradient amplifier and at least one gradient coil. The magnetic resonance device also includes a switching matrix unit that is embodied flexibly to connect the at least one gradient amplifier to the at least one gradient coil. A preliminary pulse sequence for the magnetic resonance device provides that in the optimized pulse sequence, a sufficient number of gradient amplifiers is available at any point for operating the gradient coils used.
摘要:
A system for electromagnetic excitation of an object under examination during magnetic resonance tomography includes a radio frequency (RF) device for generating a radio-frequency signal and a plurality of antennas for emitting the radio-frequency signal. A signal connection exists between the output of the RF device and the plurality of antennas. A source impedance of the signal connection to the output of the RF device at a connection point of the plurality of antennas is significantly higher than the impedance of the plurality of antennas at the connection points, so that the plurality of antennas are fed in a current source feed mode if a radio-frequency signal is present.
摘要:
A local coil for an imaging system, in particular an MRI scanner, is provided. The local coil is an MRI scanner local coil within which the head of a patient may be positioned, and that includes at least one shim coil. A conductor of a shim coil of the at least one shim coil is disposed in a region for a molded nape section of the patient.