Patent application number | Description | Published |
20130063221 | ARRANGEMENT FOR PROCESSING A NON-SYMMETRICAL AND A SYMMETRICAL SIGNAL - An arrangement for processing a non-symmetrical signal includes an apparatus configured to balance and filter an image frequency of a nominal frequency of the non-symmetrical receiving signal. The apparatus includes a modified Boucherot bridge having a series or parallel oscillating circuit that replaces inductive or capacitive components of a conventional Boucherot bridge, such that the modified Boucherot bridge is in the harmonized state with the image frequency to be faded out and has a predetermined impedance with the nominal frequency on its symmetrical output terminals. The nominal frequency has a predetermined impedance on its symmetrical output terminals. The nominal frequency is transmitted as a signal balanced to ground to the symmetrical output terminals of the modified Boucherot bridge. | 03-14-2013 |
20130331269 | Coil System for a Magnetic Resonance Tomography System - A coil system for a magnetic resonance tomography system includes a plurality of coils for sending and/or receiving high-frequency signals. The plurality of coils is disposed in a receiving chamber between a tomography magnet and a lining of an opening in the tomography magnet and may be cooled by a cooling apparatus. When the coil system is in an operating state, the receiving chamber is filled with a cryogenic cooling medium. | 12-12-2013 |
20150196255 | Magnetic Resonance Imaging System for Generating a Mammographic Representation - A magnetic resonance imaging system configured for generating a three-dimensional representation of at least one breast of a patient includes: a device configured for generating a homogeneous magnetic field; a system of active gradient coils configured for generating at least one magnetic field gradient within a measurement volume; at least one breast holder having an internal space configured for positioning the at least one breast during an MRI scan within the measurement volume; at least one local coil system that includes at least one individual coil, the at least one individual coil configured to act as an antenna for receiving magnetic resonance signals; and at least one cushion configured for stabilizing the at least one breast by filling the internal space between the at least one breast and an external boundary of the internal space. | 07-16-2015 |
20150241528 | Transmitting and/or Receiving MRI Signals for a MRI Examination - An arrangement includes a superconducting split ring resonator, a cryostat, and a copper coil. The resonator is arranged in the cryostat and includes at least one ring-shaped conductor made of a superconducting material and including an opening and a taper. The copper coil may be used to transmit a MRI excitation signal. This signal causes a current to be induced in the conductor that leads to the breakdown of the superconductivity. The conductor is detuned and therefore no longer develops an interfering effect. It is possible for the effect of the breakdown of superconductivity to be used for detuning in a targeted manner. After the transmission is complete, the conductor returns into the superconducting state and acts as a superconducting reception antenna for the MRI measurement signal. The copper coil is inductively coupled to the conductor and configured to read out the signal induced in the conductor. | 08-27-2015 |
20150309131 | Knee Coil - A local coil for an imaging magnetic resonance imaging (MRI) system for knee imaging includes a shield configured to be arranged at a knee. | 10-29-2015 |
20150320342 | MAGNETIC RESONANCE DEVICE HAVING A MOTION DETECTION UNIT AND A METHOD FOR DETECTING A MOVEMENT OF A PATIENT DURING A MAGNETIC RESONANCE EXAMINATION - A magnetic resonance device includes a radiofrequency unit that includes a radiofrequency antenna, at least one radiofrequency line and at least one radiofrequency injection point. Radiofrequency signals are transferred to the radiofrequency antenna by the at least one radiofrequency line and are coupled into the radiofrequency antenna at the at least one radiofrequency injection point. The magnetic resonance device also includes a patient receiving zone that is at least partially enclosed by the radiofrequency antenna, and a motion detection unit for detecting a movement of a patient that may be positioned within the patient receiving zone. At least one radiofrequency line includes at least one injection element by which at least one motion detection signal of the motion detection unit is coupled into the radiofrequency line. | 11-12-2015 |
20150335268 | Measuring Breathing of a Patient During a Magnetic Resonance Examination - A method is provided for measuring the breathing of a patient during a magnetic resonance examination with a magnetic resonance device, wherein the reflection properties of at least one coil element arranged beneath the patient are measured and evaluated to determine the breathing data that describes the respiratory situation at various times. | 11-26-2015 |