Abstract: A combined positron emission tomography/magnetic resonance imaging apparatus including a positron emission tomography apparatus having at least one radiation detector, and a magnetic resonance imaging apparatus having at least one gradient coil and a radio-frequency antenna device. At least one embodiment of the combined position emission tomography/magnetic resonance imaging apparatus is developed further in that a first molding is provided, whose surface coincides with the inner shell of the at least one gradient coil, and a second molding is provided, whose surface coincides with the outer shell of the radiation detector, the distance between the two shells being virtually constant over the circumference of the shells, and a vacuum seal being arranged in each case along at least a first and a second circumferential line such that a closed cavity is formed between the vacuum seals.

Abstract: An RF antenna arrangement of a combined MR/PET system is disclosed. In at least one embodiment, the RF antenna arrangement includes a first part installed in the examination tunnel in a fashion fixed to the system such that it is arranged underneath the couch board when the latter is introduced, and a second part, which can be placed onto the couch board and be introduced into and withdrawn from the examination tunnel together with the couch board. In at least one embodiment, the second part is of dimensionally stable design and has a clear cross section that is adapted to the object to be examined. Consequently, the time outlay for applying the RF antenna is reduced, and the fixed position of the RF antenna enables a correction of the attenuation of gamma rays. Furthermore, a number of second parts having various diameters can be provided.

Abstract: A whole-body antenna for a magnetic resonance apparatus has an antenna structure composed of a number of antenna rods extending in a rod direction between first and second ends of the antenna structure. The antenna rods are distributed around a central axis of the antenna structure, forming an examination region for an examination subject in a magnetic resonance examination. The antenna rods are coupled to each other at their first ends by a ferrule. Each of the rods is a hollow rod, and each rod is connected at its second end to ground via a hollow ring. Conductors are routed in the interior of the hollow rods, and can be routed through the hollow ring to the exterior of the antenna structure.

Abstract: A device for superposed magnetic resonance tomography and positron emission tomography imaging is disclosed. In at least one embodiment, the device includes a magnetic resonance tomography magnet, which defines a longitudinal axis; a magnetic resonance tomography gradient coil, arranged radially within the magnetic resonance tomography magnet; a magnetic resonance tomography RF coil, arranged radially within the magnetic resonance tomography gradient coil; and a multiplicity of positron emission tomography detection units, arranged in pairs lying opposite to one another about the longitudinal axis. In at least one embodiment, the many positron emission tomography detection units are arranged radially within the magnetic resonance tomography gradient coil and are arranged along the longitudinal axis next to the magnetic resonance tomography RF coil.

Abstract: The present embodiments relate to a standing wave trap for a magnetic resonance tomography device. The standing wave trap includes a conductor region extending in one plane and at least one capacitor that is conductively connected to two sections of the conductor region.

Abstract: A detection unit is disclosed for arrangement in the main magnet of an MR device, which has both an RF transceiver system and a PET detector. In at least one embodiment the RF transceiver system is divided into two parts and the two parts are arranged upstream and downstream of the PET detector in the longitudinal direction of the patient tunnel. The RF transceiver system and PET detector are applied to the same image volume. In at least one other embodiment, an MR device is equipped with the detection unit, and in at least one other embodiment, a method operates the detection unit.

Abstract: Detection unit is disclosed for arrangement inside a cylindrical patient receptacle of a magnetic resonance apparatus. In at least one embodiment, the detection unit includes an annular PET detector arrangement with PET detector blocks, and a radiofrequency coil arrangement, arranged coaxially inside the PET detector arrangement and including longitudinal conductors, the longitudinal conductors being guided at least in sections along interspaces between mutually spaced apart detector blocks.

Abstract: A whole-body antenna for a magnetic resonance apparatus has an antenna structure composed of a number of antenna rods extending in a rod direction between first and second ends of the antenna structure. The antenna rods are distributed around a central axis of the antenna structure, forming an examination region for an examination subject in a magnetic resonance examination. The antenna rods are coupled to each other at their first ends by a ferrule. Each of the rods is a hollow rod, and each rod is connected at its second end to ground via a hollow ring. Conductors are routed in the interior of the hollow rods, and can be routed through the hollow ring to the exterior of the antenna structure.

Abstract: A patient positioning couch includes an illumination apparatus having at least one light source that is arranged in the patient positioning couch. The patient positioning couch is capable of being placed in an examination area of a medical device. Through the arrangement of the at least one light source of the illumination apparatus of the patient positioning couch, it is always ensured that the illumination does not lose its location relative to a patient or another object positioned on the patient positioning couch, even if the position of the patient positioning couch changes, e.g. if the patient positioning couch is moved into or out of the examination area. At the same time an especially space-saving illumination of the examination area can thus be achieved.

Abstract: A detector unit for arrangement in a field generating unit of a magnetic resonance device has an RF transmission/reception system for transmitting RF pulses into, or receiving magnetic resonance signals from, an examination volume of the field generation unit. The RF transmission/reception system surrounds a patient tunnel at a radial distance from a tunnel axis thereof, and is divided into two sub-systems located at a distance from each other along the direction of the tunnel axis, so as to form a substantially annular cavity or interstice therebetween.

Abstract: An antenna unit for a PET/MRI scanner is disclosed, including a supporting tube in which at least one antenna for MR signals is arranged. In at least one embodiment, the supporting tube has at least one permeable section and one impermeable section, the permeable section of which has a greater permeability to PET quanta than the impermeable section. The antenna unit further includes a screen for radio-frequency signals which is arranged outside of the supporting tube and surrounds the latter. In at least one embodiment, an intermediate layer is arranged between the supporting tube and the screen and, in the region of the permeable section of the supporting tube, is composed of, at least in part, a material which has a permeability to PET quanta comparable to the permeable section.

Abstract: A detection unit is disclosed for arrangement in the main magnet of an MR device, which has both an RF transceiver system and a PET detector. In at least one embodiment the RF transceiver system is divided into two parts and the two parts are arranged upstream and downstream of the PET detector in the longitudinal direction of the patient tunnel. The RF transceiver system and PET detector are applied to the same image volume. In at least one other embodiment, an MR device is equipped with the detection unit, and in at least one other embodiment, a method operates the detection unit.

Abstract: An antenna unit for a PET/MRI scanner is disclosed, including a supporting tube in which at least one antenna for MR signals is arranged. In at least one embodiment, the supporting tube has at least one permeable section and one impermeable section, the permeable section of which has a greater permeability to PET quanta than the impermeable section. The antenna unit further includes a screen for radio-frequency signals which is arranged outside of the supporting tube and surrounds the latter. In at least one embodiment, an intermediate layer is arranged between the supporting tube and the screen and, in the region of the permeable section of the supporting tube, is composed of, at least in part, a material which has a permeability to PET quanta comparable to the permeable section.

Abstract: A combined positron emission tomography/magnetic resonance imaging apparatus for imaging organs of an examination object in an examination space is disclosed, including a positron emission tomography apparatus having at least one radiation detector, and a magnetic resonance imaging apparatus having at least one gradient coil and a radio-frequency antenna device.

Abstract: A sandwich structure which attenuates the PET radiation only very slightly, is used as a support tube for the transmit antenna. In at least one embodiment, it includes a thin strong inner wall, a likewise thin and strong outer wall and an interior of the support tube which is of the honeycomb type or is made of foam material.

Abstract: There is described a magnetic resonance device incorporating at least one first component part, which when the magnetic resonance device is operating oscillates, attached by at least one local load-bearing joint to at least one second oscillation-sensitive component part of the magnetic resonance device, where the joint has at least one actuatable facility for generating counter-oscillations which damp an oscillation of the first component part, where the second component part is a cladding element, in particular a vacuum cladding, which is affixed to the magnet via the joint, whereby a gap between the cladding element and the magnet is evacuatable, and the gap is provided with a pressure-isolating acoustically soft seal, in particular in the form of bellows.

Abstract: A device is disclosed for superposed magnetic resonance imaging and positron emission tomography imaging. The device includes a magnetic resonance imaging magnet which defines a longitudinal axis; a magnetic resonance imaging gradient coil arranged radially within the magnetic resonance imaging magnet; a magnetic resonance imaging RF coil arranged radially within the magnetic resonance imaging gradient coil; and a multiplicity of positron emission tomography detection units arranged in pairs opposite one another about the longitudinal axis. In at least one embodiment, the many positron emission tomography detection units are arranged radially within the magnetic resonance imaging gradient coil and can be inserted into the device and can be removed from the device along the longitudinal axis. In at least one embodiment, a carrier tube is provided having a multiplicity of pockets, which in each case extend along the longitudinal axis, for accommodating at least one positron emission tomography detection unit.

Abstract: A device for superposed magnetic resonance tomography and positron emission tomography imaging is disclosed. In at least one embodiment, the device includes a magnetic resonance tomography magnet, which defines a longitudinal axis; a magnetic resonance tomography gradient coil, arranged radially within the magnetic resonance tomography magnet; a magnetic resonance tomography RF coil, arranged radially within the magnetic resonance tomography gradient coil; and a multiplicity of positron emission tomography detection units, arranged in pairs lying opposite to one another about the longitudinal axis. In at least one embodiment, the many positron emission tomography detection units are arranged radially within the magnetic resonance tomography gradient coil and are arranged along the longitudinal axis next to the magnetic resonance tomography RF coil.

Abstract: An RF antenna arrangement of a combined MR/PET system is disclosed. In at least one embodiment, the RF antenna arrangement includes a first part installed in the examination tunnel in a fashion fixed to the system such that it is arranged underneath the couch board when the latter is introduced, and a second part, which can be placed onto the couch board and be introduced into and withdrawn from the examination tunnel together with the couch board. In at least one embodiment, the second part is of dimensionally stable design and has a clear cross section that is adapted to the object to be examined. Consequently, the time outlay for applying the RF antenna is reduced, and the fixed position of the RF antenna enables a correction of the attenuation of gamma rays. Furthermore, a number of second parts having various diameters can be provided.

Abstract: Detection unit is disclosed for arrangement inside a cylindrical patient receptacle of a magnetic resonance apparatus. In at least one embodiment, the detection unit includes an annular PET detector arrangement with PET detector blocks, and a radiofrequency coil arrangement, arranged coaxially inside the PET detector arrangement and including longitudinal conductors, the longitudinal conductors being guided at least in sections along interspaces between mutually spaced apart detector blocks.