CN219331647U

CN219331647U - Magnetic resonance apparatus

Info

Publication number: CN219331647U
Application number: CN202223329562.XU
Authority: CN
Inventors: 安德烈亚斯·布赫脑尔; 康斯坦丁·克诺特; 拉尔夫·盖特纳
Original assignee: Siemens Healthineers AG
Current assignee: Siemens Healthineers AG
Priority date: 2021-12-14
Filing date: 2022-12-13
Publication date: 2023-07-14
Anticipated expiration: 2032-12-13
Also published as: DE202021106809U1

Abstract

The utility model is based on a magnetic resonance apparatus comprising: a scanner unit; a patient receiving area at least partially enclosed by the scanner unit; and a patient support apparatus having an examination couch, wherein the examination couch is movably arranged in the patient receiving area, wherein the examination couch has a table plate comprising at least one layer of a fiber composite material and being configured for receiving a weight of at least 280 kg.

Description

Magnetic resonance apparatus

Technical Field

The utility model relates to a magnetic resonance apparatus comprising: a scanner unit; a patient receiving area at least partially enclosed by the scanner unit; and a patient support apparatus having an examination couch, wherein the examination couch is movably disposed within the patient receiving region.

Background

The magnetic resonance apparatus has a diameter of the patient receiving area during this period of significantly more than 50cm, for example 70cm or also for example 80 cm. Thus, obese patients are now also provided with the possibility of examination by means of such magnetic resonance devices. In the case of a magnetic resonance system in which a local radio-frequency coil for receiving magnetic resonance signals is already arranged in the patient receiving region, the following difficulties are present here: an examination table, in particular a table, is provided which has a sufficiently high rigidity and is at the same time sufficiently thin in order to position the patient as close as possible to a radio-frequency coil, in particular a back radio-frequency coil, positioned under the table.

Disclosure of Invention

The utility model is based on the object, inter alia, of providing a table for performing a magnetic resonance examination, which table solves the above-described requirements for a table. The object is achieved by the features of the embodiments. Advantageous embodiments are described below.

The utility model is based on a magnetic resonance apparatus comprising: a scanner unit; a patient receiving area at least partially enclosed by the scanner unit; and a patient support apparatus having an examination couch, wherein the examination couch is movably disposed within the patient receiving region. According to the utility model, the examination table has a table plate which comprises at least one layer of a fibre composite material and is designed to accommodate a weight of at least 280 kg.

The magnetic resonance system preferably comprises a medical and/or diagnostic magnetic resonance system which is designed and/or designed for detecting medical and/or diagnostic image data of a patient, in particular medical and/or diagnostic magnetic resonance image data. Furthermore, the magnetic resonance system according to the utility model can also be integrated with a PET system (positron emission tomography system) into a combined magnetic resonance PET system.

The magnetic resonance apparatus comprises a scanner unit. The scanner unit of the magnetic resonance apparatus preferably comprises a detector unit, in particular a magnet unit, for detecting medical and/or diagnostic image data. The scanner unit, in particular the magnet unit, comprises here in particular a basic magnet, a gradient coil unit and a radio frequency antenna unit. The radio frequency antenna unit is fixedly arranged in the scanner unit.

The basic magnet is configured to generate a uniform basic magnetic field having a defined magnetic field strength, for example a magnetic field strength of 0.55T or 1.5T or 3T or the like. The basic magnet is in particular designed to generate a strong and constant basic magnetic field. The homogeneous basic magnetic field is preferably arranged and/or located in a patient receiving region of the magnetic resonance apparatus. The gradient system is configured for generating magnetic field gradients for spatial encoding during imaging.

For performing a magnetic resonance examination, the patient, in particular the region of the patient to be examined, is positioned within a patient receiving region of the magnetic resonance apparatus. The patient receiving area is at least partially surrounded by the scanner unit, in particular cylindrically. A field of view (FOV) and/or an isocenter of the magnetic resonance apparatus is preferably provided within the patient receiving region. The FOV preferably comprises a detection region of the magnetic resonance apparatus in which conditions, such as a uniform basic magnetic field, for detecting medical image data, in particular magnetic resonance image data, in the patient receiving region are present. The isocenter of the magnetic resonance apparatus preferably comprises a region and/or a point within the magnetic resonance apparatus having optimal and/or ideal conditions for detecting medical image data, in particular magnetic resonance image data. The isocenter comprises in particular the most homogeneous magnetic field region within the magnetic resonance apparatus.

In order to position a patient, in particular a region of the patient to be examined, within a patient receiving region, the magnetic resonance apparatus has a patient support apparatus. The patient support apparatus is configured for supporting and/or positioning a patient for performing a magnetic resonance examination at the patient. The patient support apparatus preferably has a movable examination table with a table plate, which is in particular designed to be movable in a patient receiving region of the magnetic resonance apparatus. For a magnetic resonance examination, the patient is first positioned on an examination table of the patient support device, in particular a table plate, and then the table plate is moved together with the patient into the patient receiving region until the region of the patient to be examined is positioned within the isocenter.

The examination couch includes a platen. Furthermore, the examination table may comprise other units or components, for example fastening elements for fastening additional units and/or rolling elements and/or sliding elements for movement in the horizontal direction and/or in the longitudinal direction of the table plate, etc.

The magnetic resonance apparatus preferably comprises a fixedly mounted radio frequency coil configured for receiving magnetic resonance signals during a magnetic resonance examination. The fixedly mounted radio frequency coil is arranged in the patient receiving area, in particular in the FOV and/or the center of the patient receiving area. The examination table, in particular the table plate of the examination table, is preferably arranged movably between the patient and the fixedly mounted radio frequency coil. The fixedly mounted radio frequency coil preferably comprises a back device coil and/or a body radio frequency coil.

The platen preferably comprises a plurality of layers from which the platen is constructed. At least one of the plurality of layers comprises a fibrous composite material. The fiber composite material comprises, for example, a glass fiber fabric having glass fibers and an epoxy resin and/or a polyester resin. Furthermore, the fiber composite can also have aramid fibers, in particular fibers composed of aromatic polyamides and/or basalt fibers and/or other fibers which appear to be of interest to the person skilled in the art. The platen is preferably configured to accommodate a weight of at least 280 kg. The platen is preferably configured to accommodate a weight of up to 290 kg. The platen is preferably configured to accommodate a weight of up to 300 kg. The platen is preferably configured to accommodate a weight of up to 310 kg. The bedplate is particularly advantageously configured for accommodating weights up to 320kg or more.

According to the utility model, the layers of fiber composite constructed in this way can be constructed very thin and still have high strength and/or rigidity. This embodiment of the table allows the table to be designed structurally easily for high loads, in particular for weights of up to 320kg, so that additional support elements in the patient receiving region and/or at the examination table can be dispensed with. This also enables a magnetic resonance examination of particularly heavy patients. In particular, the patient can be positioned particularly closely to the fixedly mounted radio frequency coil during the magnetic resonance measurement in the manner described, so that high-image-quality detected magnetic resonance data can also be provided, so that undesired measurement repetitions due to poor image quality can thereby also be advantageously prevented.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that the table comprises a plurality of layers made of a fiber composite material. The plurality of layers preferably comprises at least three layers of fibrous composite material. The plurality of layers preferably comprises at least five layers of fibrous composite material. The plurality of layers preferably comprises at least seven layers of fibrous composite material. In this way, the pallet can be provided with advantageous stability for accommodating weights of up to 280kg, in particular up to 320kg, and can also be kept particularly thin.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that the plurality of layers comprise different fiber composites. Each of the plurality of layers may have a different fiber composite material than the other layers. Furthermore, two or more layers may comprise the same fibrous composite material. The different fiber composite materials can have different stability properties, which in combination or by being arranged in several layers advantageously contribute to the overall stability of the examination bed.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that different fiber composites differ in the preferred orientation of the fibers. In this context, the preferred orientation of the layer and/or the fiber composite is understood to be, in particular: at least 50% of the fibers of the layer and/or fiber composite are oriented in a direction of preferential orientation. The preferential orientation may include, for example, a transverse direction and/or a longitudinal direction and/or a diagonal direction of the platen. In an alternative embodiment, the different fiber composite materials may also differ in the material selection of the fibers and/or other features that would appear to be of interest to one skilled in the art.

The design scheme of the utility model has the following advantages: due to the different preferential orientations of the fiber composite, layers having different properties, particularly stable properties, may be provided for the design and/or construction of the platen. For example, a layer of fiber composite material can be used here, which layer is intended to increase the moment of inertia in the transverse direction of the platen. Alternatively or additionally, a layer with a fiber composite material can also be used here, which layer should reduce bending in the longitudinal direction of the platen. Alternatively or additionally, a layer with a fiber composite material can also be used here, which advantageously transmits shear stresses in the longitudinal direction of the table plate in order to transport and/or move the table plate in the patient receiving area.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that the plurality of layers has at least one layer, wherein at least one layer comprises a first fiber composite material having a preferential orientation of at least 85% of the fibers in the transverse direction of the platen and an orientation of at most 15% of the fibers in the longitudinal direction of the platen. The first fibrous composite material preferably comprises a preferential orientation of at least 90% of the fibers in the transverse direction of the platen and an orientation of at most 10% of the fibers in the longitudinal direction of the platen. The first fiber composite material particularly preferably comprises a preferential orientation of at least 95% of the fibers in the transverse direction of the platen and an orientation of at most 5% of the fibers in the longitudinal direction of the platen. The transverse direction of the platen here includes a direction oriented transversely to the longitudinal direction and/or longitudinal extension of the platen. The design scheme of the utility model has the following advantages: high stability in the lateral direction of the platen can be achieved. In particular, in the case of high loads, in particular up to 320kg, an undesired bending of the table in the transverse direction can be advantageously prevented in this way.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that the plurality of layers comprises at least one outer layer, wherein the at least one outer layer comprises the first fiber composite material. The at least one outer layer preferably comprises an upper layer and/or a lower layer of the plurality of layers of the platen. In this case, both the upper layer and the lower layer preferably comprise a first fiber composite. In this way, an advantageous rigidity in the transverse direction of the pallet can be achieved, and furthermore, undesired bending of the pallet in the transverse direction can be prevented in the case of high weights, in particular up to 320 kg.

Alternatively, it can also be provided that the plurality of layers comprises at least one inner layer, wherein the at least one inner layer comprises the first fiber composite.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that the plurality of layers comprises at least one layer, wherein at least one layer comprises a second fiber composite material having a preferential orientation of at least 85% of the fibers in the longitudinal direction of the platen and an orientation of at most 15% of the fibers in the transverse direction of the platen. The second fibrous composite material preferably comprises a preferential orientation of at least 90% of the fibers in the longitudinal direction of the platen and an orientation of at most 10% of the fibers in the transverse direction of the platen. The second fibrous composite material preferably comprises a preferential orientation of at least 95% of the fibers in the longitudinal direction of the platen and an orientation of at most 5% of the fibers in the transverse direction of the platen.

The design scheme of the utility model has the following advantages: high stability in the longitudinal direction of the platen can be achieved, and undesired bending in the longitudinal direction of the platen can be prevented. In this way, an undesired bending of the table plate in the longitudinal direction can be advantageously prevented, in particular in the case of partial pushing out of the table plate from the patient receiving area, for example at an opening on the back side of the patient receiving area.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that at least one layer with the second fiber composite material is arranged in a lateral edge region of the table. The table plate preferably has two lateral edge regions, which are arranged on opposite sides of the table plate, in particular on opposite sides of a support region of the table plate for supporting a patient, wherein the two lateral edge regions can each comprise at least one layer with a second fiber composite material. In the lateral edge region, a rolling unit and/or a guide unit of the examination couch can preferably be provided on the underside of the table plate in order to move the examination couch in a horizontal direction in the patient receiving region.

The design scheme of the utility model has the following advantages: in this way, the moment of inertia in the x-direction, in particular in the transverse direction of the table, can be increased in particular, so that the stability of the table is supported with high weight.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that the plurality of layers comprises at least one layer, wherein at least one layer comprises a third fiber composite material having a preferential orientation of at least 50% of the fibers in the longitudinal direction of the table and an orientation of at least 30% of the fibers in at least one diagonal direction of the table. The third fibrous composite material preferably comprises a preferential orientation of at least 55% of the fibers in the longitudinal direction of the platen and an orientation of at most 35% of the fibers in at least one diagonal direction of the platen. The at least one diagonal direction is oriented diagonally with respect to the transverse direction of the table plate as well as with respect to the longitudinal direction of the table plate. The at least one diagonal direction is oriented diagonally, in particular in a plane spanned by the longitudinal direction and the transverse direction, both with respect to the transverse direction of the pallet and with respect to the longitudinal direction of the pallet. In this case, the fibers can also be oriented in two different diagonal directions in the third fiber composite. A portion of the fibers may also be oriented at an angle of approximately +45° in the diagonal direction with respect to the longitudinal or transverse direction of the platen and another portion of the fibers may be oriented at an angle of-45 ° in the diagonal direction with respect to the longitudinal or transverse direction of the platen.

The design scheme of the utility model has the following advantages: by providing at least one such layer with a third fibrous composite material, shear stresses can advantageously be transferred over the entire couch when the couch is in motion.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that the plurality of layers comprises at least one inner layer, wherein the at least one inner layer comprises a third fiber composite material. The plurality of layers of the platen also preferably comprises two or more inner layers, wherein at least one of the two or more inner layers comprises a third fibrous composite material. Multiple ones of the two or more inner layers may also each comprise a third fibrous composite material. In this way, a high stability in the longitudinal direction of the pallet can be achieved. In particular, undesired bending of the table can be advantageously prevented in this way in the case of high loads, in particular up to 320kg, and/or in the case of partial pushing out of the table from the patient receiving area, for example at an opening in the back side of the patient receiving area.

Alternatively, it can also be provided that at least one outer layer of the plurality of layers also comprises at least a third fiber composite. It is also conceivable that the different fibre orientations in the individual layers also comprise unidirectional fibre fabrics produced by suitable combinations.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that at least one layer comprises a fiber composite material with glass fibers. In this way, a particularly cost-effective fiber composite material can be provided for the construction and/or production of the bedplate.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that the table has a thickness of at least 5mm and at most 10 mm. The platen preferably has a thickness of at least 6mm and at most 9 mm. The platen particularly advantageously has a thickness of between 7mm and 8 mm. In this way, the platen can advantageously be constructed particularly thin, in combination with high rigidity and/or strength. In particular, the patient can be positioned in a particularly close manner to the fixedly mounted radio frequency coil during the magnetic resonance measurement in the manner described, so that high image quality detected magnetic resonance data can also be provided. In this way, in particular, signal attenuation due to large material thicknesses and/or large distances from the magnetic resonance signals can be reduced. The construction of the table plate also allows for a magnetic resonance examination of a heavy patient having a large body weight, in particular up to 320 kg.

In an advantageous development of the magnetic resonance apparatus according to the utility model, it can be provided that the magnetic resonance apparatus comprises a fixedly mounted radio frequency coil which is provided for receiving magnetic resonance signals in the patient receiving area, wherein the table is arranged above the fixedly mounted radio frequency coil in the case of a horizontal movement in the patient receiving area. The radio frequency coil fixedly mounted in the patient receiving area preferably comprises a back coil and/or a body coil. The design scheme of the utility model has the following advantages: a particularly space-saving arrangement of the radio frequency coils is provided, so that a sufficiently large space requirement can also be provided for the patient in the patient receiving area.

Drawings

Other advantages, features and details of the utility model emerge from the embodiments described hereinafter and from the figures.

The drawings show:

figure 1 shows in a schematic view a magnetic resonance apparatus according to the utility model,

figure 2 shows a partial cross section of a patient receiving area of a magnetic resonance apparatus with a platen,

FIG. 3 illustrates an exemplary layer configuration of a platen, an

Fig. 4 shows the platen from above.

Detailed Description

A magnetic resonance apparatus 10 is schematically shown in fig. 1. The magnetic resonance apparatus 10 comprises a scanner unit 11 formed by a magnet unit. Furthermore, the magnetic resonance apparatus 10 has a patient receiving area 12 for receiving a patient 13. In the present exemplary embodiment, the patient receiving area 12 is formed cylindrically and is surrounded cylindrically in the circumferential direction by the scanner unit 11, in particular by the magnet unit. In principle, however, it is conceivable to construct the patient receiving region 12 differently from this at any time. The patient 13 can be pushed and/or moved into the patient receiving region 12 by means of the patient support device 14 of the magnetic resonance device 10. The patient support apparatus 14 has for this purpose an examination couch 15 with a table 16, which is designed in a movable manner in the patient receiving area 12. The table 16 of the examination table 15 is mounted so as to be movable in particular in the direction of the longitudinal extent of the patient support region 12 and/or in the z-direction.

The scanner unit 11, in particular the magnet unit, comprises a superconducting basic magnet 17 for generating a strong and in particular constant basic magnetic field 18. Furthermore, the scanner unit 11, in particular the magnet unit, has a gradient coil unit 19 for generating magnetic field gradients for position coding during imaging. The gradient coil unit 19 is controlled by means of a gradient control unit 20 of the magnetic resonance apparatus 10. The scanner unit 11, in particular the magnet unit, further comprises a radio frequency antenna unit 21 for exciting a polarization, which is formed in the basic magnetic field 18 generated by the basic magnet 17. The radio frequency antenna unit 21 is controlled by a radio frequency antenna control unit 22 of the magnetic resonance apparatus 10 and projects radio frequency magnetic resonance sequences into the patient receiving area 12 of the magnetic resonance apparatus 10. The radio frequency antenna unit 21 is arranged here outside the patient receiving area 12 and cylindrically surrounds the patient receiving area 12. The radio-frequency antenna unit 21 can be formed in one piece and/or in one piece with a unit surrounding the patient receiving area 12, in particular a housing unit surrounding the patient receiving area.

For controlling the basic magnet 17, the gradient control unit 20 and for controlling the radio frequency antenna control unit 22, the magnetic resonance apparatus 10 has a system control unit 23. The system control unit 23 centrally controls the magnetic resonance apparatus 10, for example, to execute a predetermined imaging gradient echo sequence. Furthermore, the system control unit 23 comprises an evaluation unit, not shown in detail, for evaluating medical image data detected during a magnetic resonance examination.

Furthermore, the magnetic resonance apparatus 10 comprises a user interface 24, which user interface 24 is connected to the system control unit 23. The control information, for example imaging parameters, and the reconstructed magnetic resonance image can be displayed for the medical operator on a display unit 25 of the user interface 24, for example on at least one monitor. Furthermore, the user interface 24 has an input unit 26, by means of which input unit 26 information and/or parameters can be entered by a medical operator during the measurement process.

For the detection of magnetic resonance data, the magnetic resonance apparatus 10 also has a local radio frequency coil 27, which local radio frequency coil 27 is arranged around the region of the patient 13 to be examined for performing a magnetic resonance examination. The individual local radio frequency coils 27 may differ here with respect to the region of the patient 13 to be examined. For this purpose, the magnetic resonance apparatus 10 has a radio frequency coil 27, which radio frequency coil 27 is arranged below the table 16. The radio frequency coil 27 here comprises a fixedly mounted radio frequency coil 27, which radio frequency coil 27 is arranged in the patient receiving area 12. The fixedly mounted radio frequency coil 27 is arranged here in a space cylindrically enclosed by the radio frequency antenna unit 21, as can be seen in fig. 2, a partial section of the patient receiving area. The fixedly mounted radio frequency coil 27 is arranged in the patient receiving area 12 in such a way that the table 16 of the examination table 15 is arranged or moved above the fixedly mounted radio frequency coil 27 in the event of a horizontal movement in the patient receiving area 12.

The patient support apparatus 14, in particular the table 16 of the examination table 15, is designed to accommodate weights of up to 280 kg. The table 16 of the examination table 15 is designed in particular for accommodating weights of up to 290 kg. The table 16 of the examination table 15 is designed in particular for accommodating weights of up to 300 kg. The table 16 of the examination table 15 is designed in particular for accommodating weights of up to 310 kg. The table 16 of the examination table 15 is designed in particular for accommodating weights of up to 320 kg.

In order to form the pallet 16 stably and thinly even with high loads, in particular loads of up to 320kg, the pallet 16 comprises at least one

layer

28, 29, 30 of a fiber composite material a, b, c. Preferably, the platen 16 has a plurality of

layers

28, 29, 30 of fiber composite material a, b, c. The

multiple layers

28, 29, 30 can be formed from the same fiber composite material a, b, c. However, two or more different fiber composites a, b, c are also particularly advantageously usable for the

multiple layers

28, 29, 30 of the platen 16. In this embodiment, the plurality of

layers

28, 29, 30 of the platen 16 comprise a fibrous composite material a, b, c comprising a fiberglass fabric composed of fiberglass having epoxy and/or polyester resins. Instead of glass fibers, the fiber composite a, b, c may also comprise basalt fibers and/or aramid fibers and/or other fibers that appear to be of interest to a person skilled in the art. The different fiber composites a, b, c can differ here in the preferred orientation of the fibers.

By forming the platen 16 with a plurality of

layers

28, 29, 30 of fibre composite material a, b, c, the platen 16 can be formed particularly thinly and here has a thickness 31 of at least 5mm and at most 10 mm. The platen 16 particularly advantageously has a thickness 31 of at least 6mm and at most 9 mm. The platen 16 particularly advantageously has a thickness 31 of at least 7mm and at most 8 mm.

The

layers

28, 29, 30 of the bedplate 16 have at least one

layer

28, 29, 30, wherein the at least one

layer

28, 29, 30 comprises a first fiber composite material a having a preferred orientation of at least 85% of the fibers in the transverse direction 32 of the bedplate 16 and an orientation of at most 15% of the fibers in the longitudinal direction 33 of the bedplate 16. The first fibrous composite material a preferably has a preferential orientation of at least 90% of the fibers in the transverse direction 32 of the platen 16 and an orientation of at most 10% of the fibers in the longitudinal direction 33 of the platen 16. The first fibrous composite material a preferably has a preferential orientation of at least 95% of the fibers in the transverse direction 32 of the platen 16 and an orientation of at most 5% of the fibers in the longitudinal direction 33 of the platen 16.

Furthermore, the plurality of

layers

28, 29, 30 of the platen 16 has at least one

layer

28, 29, 30, wherein the at least one

layer

28, 29, 30 comprises a second fiber composite b having a preferential orientation of at least 85% of the fibers in a longitudinal direction 33 of the platen 16 and an orientation of at most 15% of the fibers in a transverse direction 32 of the platen 16. The second fibrous composite material b preferably has a preferential orientation of at least 90% of the fibers in the longitudinal direction 33 of the platen 16 and an orientation of at most 10% of the fibers in the transverse direction 32 of the platen 16. The second fibrous composite material b preferably has a preferential orientation of at least 95% of the fibers in the longitudinal direction 33 of the platen 16 and an orientation of at most 5% of the fibers in the transverse direction 32 of the platen 16.

Furthermore, the plurality of

layers

28, 29, 30 of the platen 16 has at least one

layer

28, 29, 30, wherein the at least one

layer

28, 29, 30 comprises a third fiber composite c having a preferential orientation of at least 50% of the fibers in the longitudinal direction 33 of the platen 16 and an orientation of at least 30% of the fibers in at least one

diagonal direction

34, 35 of the platen 16. The third fibrous composite material c preferably has a preferential orientation of at least 55% of the fibers in the longitudinal direction 33 of the platen 16 and an orientation of at most 35% of the fibers in at least one

diagonal direction

34, 35 of the platen 16. The fibers can also be oriented in two different diagonal directions in the third fiber composite material c. A portion of the fibers may also be oriented at an angle of about +45° in the

diagonal directions

34, 35 with respect to the longitudinal direction 33 or the transverse direction 32 of the platen 16 and another portion of the fibers may be oriented at an angle of-45 ° in the diagonal directions with respect to the longitudinal direction 33 or the transverse direction 32 of the platen 16, for example.

For an illustration of the transverse direction 32 of the platen 16, the longitudinal direction of the platen 16, and the

diagonal directions

34, 35 of the platen 16, reference is made to fig. 4. The at least one

diagonal direction

34, 35 is oriented diagonally with respect to both the transverse direction 32 of the pallet 16 and the longitudinal direction 33 of the pallet 16.

In addition, the plurality of

layers

28, 29, 30 of the platen 16 have at least one outer layer 28. The plurality of

layers

28, 29, 30 preferably have at least two outer layers 28, wherein the at least two outer layers 28 comprise an upper layer 28 of the platen 16 and a lower layer 28 of the platen 16. Furthermore, the plurality of

layers

28, 29, 30 of the platen 16 include at least one inner layer 29. The plurality of

layers

28, 29, 30 preferably has two or more inner layers 29. Advantageously, two or more inner layers 29 are provided between at least two outer layers 28 (fig. 3).

In the embodiment shown in fig. 3, the outer layer 28, in particular the uppermost and lowermost layers 28, comprises a first fibrous composite material a. In addition, the inner layers 29 each comprise a third fibrous composite material c. In addition, the plurality of

layers

28, 29, 30 of the platen 16 have at least one layer 30 in a lateral edge region 36 of the platen 16, wherein at least one layer 30 in the lateral edge region 36 comprises the second fiber composite b. The platen 16 preferably has two lateral edge regions 36, the lateral edge regions 36 being disposed on opposite sides of the platen 16. Between the two lateral edge regions 36 of the table, there is provided a support region of the table 16 for supporting the patient 13.

Alternatively to the embodiment shown in fig. 3, only two intermediate layers 29 of the inner layers 29 may also comprise the third fibrous composite material c and two outer layers 28 may comprise the first fibrous composite material a. The further inner layer 29 arranged between the outer layer 28 and the intermediate layer 29 may here comprise the second fiber composite b and/or the first fiber composite a. In another design, the inner layer 29 may also include a first fibrous composite material a and the outer layer 28 may include a third fibrous composite material c.

Examples of possible layer combinations in the case of the same number of layers as in fig. 3 may be: a-b-a-c-c-a-b-a, a-b-b-c-c-b-b-a, a-c-c-b-b-c-c-a, c-c-c-a-a-c-c. The order of the individual layers is given here from top to bottom. Furthermore, other layer combinations of the individual fiber composite materials a, b, c are conceivable which would appear to be of interest to the person skilled in the art.

The illustrated magnetic resonance apparatus 10 may of course comprise other components that are typical of magnetic resonance apparatus 10. Furthermore, the general way in which the magnetic resonance apparatus 10 operates is known to a person skilled in the art, so that a detailed description of the other components is omitted.

While the details of the present utility model have been illustrated and described in detail by the preferred embodiments, the present utility model is not limited by the disclosed examples and other variations can be derived therefrom by those skilled in the art without departing from the scope of the present utility model.

Claims

1. A magnetic resonance apparatus, the magnetic resonance apparatus comprising: a scanner unit; a patient receiving area at least partially enclosed by the scanner unit; and a patient support apparatus having an examination couch, wherein the examination couch is movably arranged in the patient receiving area, characterized in that the examination couch has a table plate comprising at least one layer of a fiber composite material and being configured for receiving a weight of at least 280 kg.

2. The magnetic resonance apparatus according to claim 1,

wherein the platen comprises a plurality of layers of fibrous composite material.

3. The magnetic resonance apparatus according to claim 2,

characterized in that the plurality of layers comprise different fibrous composites.

4. A magnetic resonance apparatus according to claim 3,

characterized in that different fiber composites differ in the preferred orientation of the fibers.

5. The magnetic resonance apparatus according to any one of claims 2 to 4,

characterized in that the plurality of layers has at least one layer, wherein the at least one layer comprises a first fibrous composite material having a preferential orientation of at least 85% of the fibers in the transverse direction of the platen and an orientation of at most 15% of the fibers in the longitudinal direction of the platen.

6. The magnetic resonance apparatus according to claim 5,

characterized in that the plurality of layers comprises at least one outer layer, wherein the at least one outer layer comprises the first fibrous composite material.

7. The magnetic resonance apparatus according to any one of claims 2 to 6,

characterized in that the plurality of layers comprises at least one layer, wherein the at least one layer comprises a second fibrous composite material having a preferential orientation of at least 85% of the fibers in the longitudinal direction of the platen and an orientation of at most 15% of the fibers in the transverse direction of the platen.

8. The magnetic resonance apparatus according to claim 7,

characterized in that the at least one layer with the second fiber composite is arranged in the lateral edge region of the platen.

9. The magnetic resonance apparatus according to any one of claims 2 to 8,

characterized in that the plurality of layers comprises at least one layer, wherein the at least one layer comprises a third fibrous composite material having a preferential orientation of at least 50% of the fibers in the longitudinal direction of the platen and an orientation of at least 30% of the fibers in at least one diagonal direction of the platen.

10. The magnetic resonance apparatus according to claim 9,

characterized in that the plurality of layers comprises at least one inner layer, wherein the at least one inner layer comprises the third fibrous composite material.

11. The magnetic resonance apparatus according to any one of the preceding claims,

characterized in that the at least one layer comprises a fibrous composite material with glass fibers.

12. The magnetic resonance apparatus according to any one of the preceding claims,

characterized in that the platen has a thickness of at least 5mm and at most 10 mm.

13. The magnetic resonance apparatus according to any one of the preceding claims,

the patient support is characterized in that a fixedly mounted radio frequency coil is provided, which is provided for receiving magnetic resonance signals in the patient support region, wherein the table is arranged above the fixedly mounted radio frequency coil in the case of a horizontal movement in the patient support region.