Magnetic resonance coil unit with coil lower part and magnetic resonance device

Abstract

The utility model relates to a magnetic resonance coil unit with a coil lower part, the coil lower part comprises a supporting shell used for supporting the head of a patient, the supporting shell comprises a head containing area, and the magnetic resonance coil unit is characterized by being provided with at least one noise protection element. Wherein the at least one noise protection element is reversibly positionable between the support shell and the head of the patient. In addition, the utility model also relates to magnetic resonance equipment with the magnetic resonance coil unit.

Description

Technical Field

[0001] The utility model relates to a magnetic resonance coil unit having a lower coil part, wherein the lower coil part comprises a support shell for supporting a patient's head, wherein the support shell comprises a head receiving area. In addition, the utility model is based on a magnetic resonance device having the magnetic resonance coil unit.

[0002] Regardless of the grammatical gender of a particular term, it includes people with both male and female gender identities. Background Art

[0003] Magnetic resonance examinations often cause discomfort to patients. This is due, for example, to the relatively long examination time that the patient must spend in the patient accommodation area of ​​the MRI system during the examination. This examination time can, for example, be up to an hour. Furthermore, the patient must remain as still as possible during the long duration of the MRI examination to avoid repeated measurements and / or image artifacts in the acquired image data. Another reason why patients often find MRI examinations uncomfortable is the very loud noise exposure experienced by the MRI system, particularly its gradient coil units, during the examination.

[0004] To ensure that patients remain as comfortably as possible within the patient accommodation area of ​​an MRI system during an MRI examination, it is known to provide them with entertainment during the examination, for example, through music. This type of entertainment can particularly help distract and / or calm the patient during the examination. Furthermore, communication between the patient and medical personnel who reside in the control room during the examination is also beneficial. For example, headphones can be provided to the patient for audio output, particularly during the examination and / or for the patient's entertainment through music.

[0005] Head examinations, in particular, often cause patients to feel particularly uncomfortable. Firstly, the patient's head is positioned within a local head radiofrequency coil, which causes many patients to experience a particularly oppressive sensation. Furthermore, the noise load during an MRI examination can be particularly disturbing. The additional provision and / or positioning of headphones, for example for noise protection and / or communication and / or patient entertainment, often causes discomfort or disruption to the patient due to the limited space available, and is therefore rejected. Utility Model Content

[0006] The present invention is based on the object of providing simple and flexible shielding against loud noise during magnetic resonance examinations of a patient, in particular during head examinations. This object is achieved by the magnetic resonance coil unit according to the present invention having a lower coil element. Advantageous embodiments are described in the present invention.

[0007] The present invention is based on a magnetic resonance coil unit having a lower coil part, wherein the lower coil part comprises a support shell for supporting a patient's head, wherein the support shell comprises a head receiving area. According to the present invention, the magnetic resonance coil unit comprises at least one noise protection element, wherein the at least one noise protection element can be reversibly positioned between the support shell and the patient's head.

[0008] The magnetic resonance coil unit includes a local magnetic resonance coil unit, in particular a local radio frequency coil unit, which is designed to receive magnetic resonance signals during a magnetic resonance examination. The local magnetic resonance coil unit, in particular a local radio frequency coil unit, is arranged around a region of a patient to be examined during the magnetic resonance examination. Different local magnetic resonance coil units, in particular local radio frequency coil units, preferably adapted to the region to be examined, are provided for different regions to be examined, in particular different body regions. For examining the patient's head, a local head radio frequency coil adapted to the shape of the patient's head is provided.

[0009] A magnetic resonance coil unit, in particular a local head radio frequency coil unit, includes a lower coil section and an upper coil section. To position a patient, in particular the patient's head, within the magnetic resonance coil unit, in particular the local head radio frequency coil unit, the upper coil section is designed to be removable from the lower coil section. After the patient's head is positioned within the support shell and / or head receiving area of ​​the lower coil section, the upper coil section is inserted onto the lower coil section. The lower coil section and the upper coil section each include a plurality of coil elements for detecting magnetic resonance data.

[0010] The magnetic resonance coil unit, in particular the local head radio frequency coil unit, has a fastening element for fastening the magnetic resonance coil unit to an examination table of a magnetic resonance device. The fastening element is arranged on the underside of the coil lower part, in particular on the side facing the examination table. The fastening element can include a plug-in element, which is designed to fasten the magnetic resonance coil unit to the examination table by means of a corresponding plug-in element of the examination table, such as a plug socket, in particular to achieve a detachable fastening. Preferably, the fastening element of the magnetic resonance coil unit, in particular the fastening element of the local head radio frequency coil unit, is designed as a coil plug-in contact. Therefore, by being arranged directly on the magnetic resonance coil unit, the magnetic resonance coil unit, in particular the local head radio frequency coil unit, has a fixed position on the examination table for supporting the patient's head.

[0011] The support shell is designed to support the patient's head for an MRI examination. To this end, the support shell has a head receiving area. The head receiving area is arranged on the upper side of the support shell, in particular on the side facing away from the examination table. The support shell is preferably integrated into the housing of the magnetic resonance coil unit, in particular the housing of a local head radio frequency coil unit. Alternatively, the support shell can also be designed separately from the housing of the magnetic resonance coil unit, in particular the housing of the local head radio frequency coil unit. The support shell, in particular the head receiving area, preferably includes at least one support element, such as a support cushion, on which the patient's head can be supported for the MRI examination.

[0012] At least one noise protection element is at least partially arranged around the support area, in particular in the area of ​​the patient's ear around the support area. In particular, the at least one noise protection element comprises a sound-absorbing and / or sound-damping noise protection element, wherein the at least one noise protection element comprises, for example, a material and / or substance with a large inner surface, and / or a material and / or substance comprising open pores. The sound-absorbing and / or sound-damping material causes the conversion of sound energy into vibration energy and / or heat energy. For example, the at least one noise protection element can comprise a foam material and / or a rubber material and / or a polystyrene material and / or other materials and / or substances that appear meaningful to a person skilled in the art. In this case, for use during a magnetic resonance examination, the at least one noise protection element is designed to be magnetic resonance compatible.

[0013] At least one noise protection element is preferably reversibly positionable between the patient's head and the support shell. In particular, at least one noise protection element is reversibly positionable between the patient's ear and the support shell. A reversibly positionable noise protection element is to be understood in particular as a noise protection element that is not fixedly arranged on the support shell. More precisely, the noise protection element is clamped between the patient's head and the support shell for positioning. In particular, at least one noise protection element is designed to be removable. Preferably, the patient's head is first positioned in the head receiving area, and then the at least one noise protection element is positioned between the patient's head, in particular the ear, and the support shell. Preferably, the magnetic resonance coil unit, in particular the local head radio frequency coil unit, has two noise protection elements, so that advantageous noise protection is provided for each ear of the patient during the magnetic resonance examination.

[0014] Alternatively, the magnetic resonance coil unit, in particular a local head radio frequency coil unit, may also include only a single noise protection element, wherein the noise protection element is designed such that it has two regions positioned between the patient's two ears and the support shell. In another alternative embodiment of the at least one noise protection element, the noise protection element may also be designed integrally and / or integrally with a support cushion for supporting the patient's head within the magnetic resonance coil unit, in particular the support shell.

[0015] The present invention can provide advantageous noise protection for patients during magnetic resonance imaging (MRI) examinations. In particular, the noise protection element can be used to provide simple and flexible noise shielding of patients against loud noises during MRI examinations. In particular, the patient's ears can also be advantageously shielded by the noise protection unit.

[0016] Another advantage of the present invention is that the noise protection unit can be easily integrated into existing units, particularly local head RF coil units. Furthermore, this provides advantageous noise protection, particularly during head examinations, without the patient having to wear separate noise protection equipment. In particular, during head examinations, where the patient's head is already positioned and / or disposed within the local head RF coil, noise protection earphones can be very uncomfortable for the patient. Consequently, this can also advantageously improve the patient's comfort and / or sense of well-being during the head examination.

[0017] In an advantageous development of the magnetic resonance coil unit according to the present invention, it can be provided that the support device has at least one loudspeaker element encompassed by the support shell, wherein at least one noise protection element has a sound transmission element. Preferably, the magnetic resonance coil unit has two loudspeaker elements, wherein one loudspeaker element is arranged on each side of the support shell next to the head support area and / or is integrated into the support shell. At least one loudspeaker element can preferably comprise a piezoelectric loudspeaker. The sound transmission element preferably has different material properties than the noise protection element. In particular, the sound transmission element is designed to conduct sound and / or audio signals in a targeted manner. On the one hand, audio signals can be transmitted to the patient during a magnetic resonance examination by means of the sound transmission element. In addition, however, by integrating the sound transmission element into the noise protection element, advantageous shielding of the patient from noise and interfering noise can be achieved.

[0018] In an advantageous refinement of the magnetic resonance coil unit according to the present invention, the sound transmission element may include a recess extending through the noise reduction element. Preferably, the recess extending through the noise reduction element has openings on the front and rear sides of the noise reduction element. Sound can advantageously be transmitted from the at least one loudspeaker element to the patient through the recess. A sound transmission medium may be disposed in the recess. The sound transmission medium particularly advantageously comprises air. Preferably, sound transmission occurs within the recess via airborne sound transmission.

[0019] In an advantageous refinement of the magnetic resonance coil unit according to the present invention, it can be provided that at least one noise protection element is arranged so as to be reversibly positionable between the patient's ear region and the region of the support shell, wherein the at least one loudspeaker element is arranged in the region of the support shell. This allows for an advantageous transmission of sound and / or audio signals between the at least one loudspeaker element and the patient's ear. Preferably, the at least one noise protection element is arranged between the patient's ear region and the support shell such that a first opening region of the cutout in the sound transmission element directly abuts the region of the support shell in which the at least one loudspeaker element is arranged, and a second opening region of the cutout in the sound transmission element directly abuts the patient's ear region.

[0020] In an advantageous refinement of the magnetic resonance coil unit according to the present invention, it can be provided that at least one noise protection element has a further recess, which is configured to accommodate the patient's auricle. Preferably, the at least one noise protection element has a thickness in the region of the recess that is smaller than the thickness of the edge region of the noise protection element surrounding the recess. When the noise protection element is arranged, it is preferably positioned between the patient and the support shell with the recess facing the patient. This design achieves favorable patient comfort. In addition, undesirable mechanical pressure on the patient's auricle can be prevented.

[0021] In an advantageous refinement of the magnetic resonance coil unit according to the present invention, an opening region for the sound transmission element can be provided in the recess for accommodating the auricle. This facilitates the transmission of audio signals to the patient during an MRI examination. Furthermore, unwanted interfering noise can be advantageously shielded.

[0022] In an advantageous improvement of the magnetic resonance coil unit according to the present invention, it can be proposed that at least one noise protection element has an edge region that is arranged at least partially around the recess for accommodating the patient's auricle in the circumferential direction of the recess. The edge region can be configured so that the edge region completely surrounds the recess for accommodating the patient's auricle in the circumferential direction. Alternatively, the edge region can also be configured to be open on at least one side. This design solution can achieve favorable patient comfort and prevent undesirable mechanical pressure on the patient's auricle. In addition, the edge region that is open on at least one side enables simple positioning of the noise protection element between the patient's head and the support shell, for example, by pushing the noise protection element from above into the intermediate space between the patient's head and the support shell.

[0023] In an advantageous refinement of the magnetic resonance coil unit according to the present invention, it can be provided that at least one noise protection element comprises an elastically compressible foam material. In this context, an elastically compressible foam material should be understood in particular to mean that the noise protection element can be compressed by the action of an external force and regains its original shape after the external force disappears. This makes it possible for the at least one noise protection element to be positioned between the patient's ear and the support shell, preferably compressed, so as to facilitate the introduction and / or positioning of the at least one noise protection element. Furthermore, after positioning the at least one noise protection element, the at least one noise protection element can at least partially return to its original shape, provided that a sufficiently large free space and / or space is provided for the original shape. This makes it possible for the at least one noise protection element to advantageously fit snugly against the patient's head, in particular against the ear. Furthermore, this also provides effective noise protection, thereby preventing unwanted intermediate spaces and / or unwanted noise bridges between the at least one noise protection element and the patient's ear region.

[0024] In an advantageous refinement of the magnetic resonance coil unit according to the present invention, it can be provided that the elastically compressible foam material comprises a shape-memory polymer. Shape-memory polymers (English: memory foam) have the following properties: despite a temporary, drastic change in shape, they are able to recall their previous external shape and, after the change in shape, regain the original and / or previous external shape. Here, the original and / or previous external shape is not immediately assumed after the external force disappears, but rather occurs with a certain inertia time delay. It may take several seconds until the elastically compressible foam material regains its original and / or previous external shape. Shape-memory polymers may include viscous foams and / or other materials that appear relevant to those skilled in the art.

[0025] In an advantageous refinement of the magnetic resonance coil unit according to the present invention, it can be provided that at least one noise reduction element has a painted surface layer. The painted surface layer forms an outer layer of the noise reduction element, in particular an outer protective layer. The painted surface layer can also be used to increase the shape inertia of the at least one noise reduction element, so that after deformation and / or compression, the at least one noise reduction element requires more time to return to its original and / or previous outer shape. Another advantage is that the at least one noise reduction element can be easily cleaned.

[0026] In an advantageous refinement of the magnetic resonance coil unit according to the present invention, the painted surface layer may include a PU lacquer (polyurethane lacquer). The use of PU lacquer allows for a resistant painted surface layer to be provided that has sufficient elasticity to enable elastic deformation and / or resilient deformation of the at least one noise protection element.

[0027] In an advantageous refinement of the magnetic resonance coil unit according to the invention, the painted surface layer can be designed to be air-permeable. The painted surface layer can include an air-permeable membrane that allows air to escape when the at least one noise reduction element is compressed and allows air to flow in when the at least one noise reduction element is in its original and / or previous shape. In addition to the advantageously smooth surface, which is particularly easy to clean, this also allows the elasticity of the at least one noise reduction element to be maintained.

[0028] In an advantageous improvement of the magnetic resonance coil unit according to the present invention, it can be provided that the painted surface layer has a plurality of holes, wherein each hole has a diameter of between 0.1 mm and 1.0 mm. The individual holes are preferably evenly distributed on the painted and air-permeable surface layer of the at least one noise protection element, so that uniform compression and / or deformation can be achieved, and also uniform restoration to the original shape of the at least one noise protection element can be achieved. Preferably, the holes have a diameter of between 0.2 mm and 1.0 mm. Preferably, the holes have a diameter of between 0.3 mm and 1.0 mm. Preferably, the holes have a diameter of between 0.4 mm and 1.0 mm. Particularly advantageously, the holes have a diameter of between 0.5 mm and 1.0 mm. In order to accommodate the individual holes, the painted surface layer is preferably perforated. In particular, the air permeability of the painted surface layer can be determined by the number of holes in the painted surface layer and the size of the holes.

[0029] In an advantageous refinement of the magnetic resonance coil unit according to the present invention, the coating surface layer can be sprayed onto the foam material of the at least one noise reduction element. This allows for particularly simple application of the coating surface layer. Furthermore, the coating surface layer can be applied particularly uniformly and thinly to the at least one noise reduction element.

[0030] The present invention is also based on a magnetic resonance system having a magnetic resonance coil unit, the coil unit including a lower coil part, wherein the lower coil part includes a support shell for supporting a patient's head, and wherein the support shell includes a head receiving area. Furthermore, the magnetic resonance coil unit includes at least one noise protection element, wherein the at least one noise protection element is reversibly positionable between the support shell and the patient's head.

[0031] The magnetic resonance system preferably comprises a medical and / or diagnostic magnetic resonance system, which is designed and / or configured for detecting medical and / or diagnostic image data of a patient, in particular medical and / or diagnostic magnetic resonance image data. The magnetic resonance system preferably comprises a magnet unit for detecting medical and / or diagnostic image data. The magnet unit comprises a base magnet, a gradient coil unit, and a radiofrequency antenna unit. The radiofrequency antenna unit is fixedly arranged in the magnet unit.

[0032] To perform a magnetic resonance examination, a patient, in particular the area of ​​the patient to be examined, is positioned within a patient accommodation area of ​​the magnetic resonance system. The patient accommodation area is at least partially enclosed by the magnet unit, for example, in a cylindrical manner. The field of view (FOV) and / or isocenter of the magnetic resonance system are preferably arranged within the patient accommodation area. The FOV preferably includes a detection area of ​​the magnetic resonance system, within which conditions exist for detecting medical image data, in particular magnetic resonance image data, within the patient accommodation area, such as a uniform basic magnetic field. The isocenter of the magnetic resonance system preferably includes an area and / or point within the magnetic resonance system that has optimal and / or ideal conditions for detecting medical image data. In particular, the isocenter includes the most homogeneous magnetic field area within the magnetic resonance system.

[0033] To position the patient in the patient accommodation area, the magnetic resonance system includes a patient support device with an examination table. The examination table is designed to move the patient into the patient accommodation area. To this end, the examination table is movable in at least one direction, in particular, in the longitudinal direction of the examination table and / or in the longitudinal direction of the patient accommodation area. The magnetic resonance coil unit is preferably positioned together with the patient on the examination table.

[0034] The present invention provides advantageous noise protection for patients during magnetic resonance imaging (MRI) examinations. The noise protection unit allows for simple and flexible shielding of patients from loud noises during MRI examinations. In particular, the noise protection unit can also advantageously shield the patient's ear area. Another advantage of the present invention is that the noise protection unit can be easily integrated into existing units, particularly local head radiofrequency coil units. Consequently, the patient's comfort and / or sense of well-being can be advantageously enhanced during head examinations.

[0035] The advantages of the magnetic resonance system according to the present invention substantially correspond to the advantages of the magnetic resonance coil unit according to the present invention described in detail above. The features, advantages or alternative embodiments mentioned here can also be transferred to other claimed subjects and vice versa. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Further advantages, features and details of the present invention will be apparent from the exemplary embodiments described below and with reference to the accompanying drawings.

[0037] The accompanying drawings show:

[0038] Figure 1 The magnetic resonance device according to the present invention is shown in a schematic diagram.

[0039] Figure 2 The magnetic resonance coil unit according to the present invention is shown, which has a coil lower part and two noise protection elements.

[0040] Figure 3 shows a cross section of a partial region of a noise reduction element,

[0041] Figure 4 A second embodiment of the noise protection element is shown, and

[0042] Figure 5 A third exemplary embodiment of a noise protection element is shown. DETAILED DESCRIPTION

[0043] exist Figure 1 , a magnetic resonance system 10 is schematically shown. The magnetic resonance system 10 includes a magnet unit 11 having a base magnet 12, a gradient coil unit 13, and a radio frequency antenna unit 14. Furthermore, the magnetic resonance system 10 has a patient accommodation area 15 for accommodating a patient 16 for a magnetic resonance examination. In the present embodiment, the patient accommodation area 15 is cylindrical and is cylindrically surrounded by the magnet unit 11 in the circumferential direction. However, in principle, different configurations of the patient accommodation area 15 are conceivable at any time.

[0044] To position a patient 16, in particular a region of the patient 16 to be examined, within the patient receiving area 15, the magnetic resonance system 10 includes a patient support device 17. The patient support device 17 includes a base unit 18 and an examination table 19 that is movable relative to the base unit 18. The examination table 19 is movably configured within the patient receiving area 15 for positioning the patient 16, in particular a region of the patient 16 to be examined. In particular, the examination table 19 is movably mounted in the longitudinal direction and / or the z-direction of the patient receiving area 15.

[0045] The base magnet 12 of the magnet unit 11 is designed to generate a strong and, in particular, constant, basic magnetic field 20. The base magnet 12 can be designed, for example, as a superconducting base magnet 12 or as a permanent magnet. The gradient coil unit 13 of the magnet unit 11 is designed to generate magnetic field gradients, which are used for spatial encoding during imaging. The gradient coil unit 13 is controlled by means of a gradient control unit 21 of the magnetic resonance system 10. The radio frequency antenna unit 14 of the magnet unit 11 is designed to excite polarizations occurring in the basic magnetic field 13 generated by the base magnet 12. The radio frequency antenna unit 14 is controlled by a radio frequency antenna control unit 22 of the magnetic resonance system 10 and transmits high-frequency magnetic resonance sequences into the patient accommodation area 15 of the magnetic resonance system 10.

[0046] The magnetic resonance system 10 has a system control unit 23 for controlling the base magnet 12, the gradient control unit 21, and the radio frequency antenna control unit 22. The system control unit 23 centrally controls the magnetic resonance system 10, for example, executing a predetermined imaging gradient echo sequence. Furthermore, the system control unit 23 includes an evaluation unit (not shown in greater detail) for evaluating the medical image data acquired during the magnetic resonance examination.

[0047] The magnetic resonance system 10 further comprises a user interface 24, which is connected to the system control unit 23. Control information, such as imaging parameters, as well as reconstructed magnetic resonance images, can be displayed to a medical operator on a display unit 25 of the user interface 24, for example, on at least one monitor. The user interface 24 also has an input unit 26, by means of which the medical operator can enter information and / or parameters during the measurement process.

[0048] To detect magnetic resonance data, the magnetic resonance system 10 includes a magnetic resonance coil 27. The magnetic resonance coil unit 27 includes a local head radio frequency coil unit having a receive coil for detecting magnetic resonance data. The magnetic resonance coil unit 27, in particular a local head radio frequency antenna unit, includes a coil lower part 28 and a coil upper part 29. The coil lower part 28 includes a fastening element 30 disposed on its underside, which is configured to fasten the magnetic resonance coil unit 27, in particular the local head radio frequency antenna unit, to the examination table 19. The fastening element 30 is configured as a plug contact, in particular a coil plug contact. The examination table 19 also includes a plug contact 31 corresponding to the coil plug contact. In particular, the examination table 19 includes a plug socket corresponding to the coil plug element, which provides for mechanical fastening and electrical contacting of the magnetic resonance coil unit 27, in particular the local head radio frequency antenna unit.

[0049] The magnetic resonance system 10 shown can of course include other components that are typically present in a magnetic resonance system 10. Otherwise, the general operating principle of the magnetic resonance system 10 is known to a person skilled in the art, so that a detailed description of the other components is omitted.

[0050] exist Figure 2 , the lower coil part 28 is shown positioned on the examination table 19. The lower coil part 28 has a support shell 32 designed to support the head of the patient 16. The support shell 32 includes a head receiving area 33 with a support surface 34. The lower coil part 28 also includes a coil housing 35, wherein the support shell 32 is enclosed by the coil housing 35 of the lower coil part 28. The magnetic resonance coil unit 27, in particular the local head radio frequency antenna unit, has two noise protection elements 37, which can be reversibly positioned between the support shell 32 and the head of the patient 16. In particular, the two noise protection elements 37 can be removably positioned between the support shell 32 and the head of the patient 16.

[0051] The magnetic resonance coil unit 27, in particular a local head radio frequency antenna unit, further comprises at least one loudspeaker element 38 (in the case of a housing 32) contained by the support shell 32. Figure 2 (indicated by dashed lines in the figure). In this embodiment, the magnetic resonance coil unit 27, in particular the local head radio frequency antenna unit, has two speaker elements 38, each of which is arranged on the support shell 32 and / or integrated into the support shell 32. Each speaker element 38 is preferably designed as a piezoelectric speaker. In this case, each speaker element 38 is arranged and / or integrated in an area on the support shell 32, wherein the area is arranged on the support shell 32 near the ear of the patient 16. During the magnetic resonance examination, the two noise protection elements 37 are arranged and / or positioned, in particular removably, between each ear and / or ear area of ​​the patient 16 and the area of ​​the support shell 32 near the ear.

[0052] For transmitting audio data, for example communication data and / or entertainment data such as music data, each noise reduction element 37 has a sound transmission element 39. Each sound transmission element 39 comprises a cutout 40 extending through one of the two noise reduction elements 37.

[0053] The two noise reduction elements 37 each have a further recess 41, which is formed to accommodate the auricle of the patient 16. An opening region 42 of the sound transmission element 39 is provided in the recess 41 for accommodating the auricle, so that sound and / or audio signals can be transmitted directly to the ear of the patient 16. The two noise reduction elements 37 also each have an edge region 43, which is arranged at least partially around the recess 41 in a circumferential direction 44 of the recess 41. In the present exemplary embodiment, the recess 41 has a rectangular shape, with the edge region 43 being arranged around three sides of the recess 41 and one side of the recess 41 being open.

[0054] Each noise protection element 37 comprises an elastically compressible foam material. Preferably, the elastically compressible foam material comprises a shape memory polymer, such as a viscous foam, so that a simple elastic deformation and a time-delayed return to the original shape can be achieved.

[0055] In addition, each noise protection element 37 has a coating surface layer 45 ( Figure 3 ). A coating surface layer 45 is sprayed onto the noise protection element 37, in particular onto an elastically compressible foam material. The coating surface layer 45 comprises a PU paint. In addition, the coating surface layer 45 is air-permeable. For this purpose, the coating surface layer 45 has a plurality of holes 46, wherein the holes 46 are preferably arranged in a manner uniformly distributed on the coating surface layer 45. The individual holes 46 preferably have a diameter 47 between 0.1 mm and 1.0 mm. Preferably, the holes 46 have a diameter 47 between 0.2 mm and 1.0 mm. Preferably, the holes 46 have a diameter 47 between 0.3 mm and 1.0 mm. Preferably, the holes 46 have a diameter 47 between 0.4 mm and 1.0 mm. Particularly advantageously, the holes 46 have a diameter 47 between 0.5 mm and 1.0 mm. In order to accommodate the individual holes 46, the coating surface layer 45 is preferably perforated and / or punched. In particular, the air permeability of the painted surface layer 45 can be determined by the number of pores 46 in the painted surface layer 45 and the size, in particular the diameter 47 , of the pores 46 .

[0056] exist Figure 4 An alternative embodiment of a noise protection element 100 is shown in FIG. Components, features and functions that remain essentially the same are in principle numbered with the same reference numerals. The following description is essentially limited to the same Figures 2 to 3 The differences between the embodiments in FIG. 1 and FIG. 2 are as follows, wherein reference is made to the corresponding embodiment for components, features, and functions that remain the same. Figure 2 and 3 Description of the embodiments in .

[0057] Figure 4 The noise protection element 100 in Figure 2The noise reduction element 37 in the embodiment differs in the design of the recess 101 for accommodating the auricle of the patient 16. In the present exemplary embodiment, the noise reduction element 100 has an edge region 102 which is arranged completely around the recess 101 for accommodating the auricle in a circumferential direction 103 of the recess 101.

[0058] The design of the noise protection element 100 with respect to the coating surface layer 45 corresponds to the Figure 2 and Figure 3 Furthermore, the design of the noise protection element 100 with regard to the sound transmission elements and the materials and / or material properties also corresponds to the embodiment of Figure 2 implementation plan.

[0059] exist Figure 5 An alternative embodiment of a noise protection element 200 is shown in FIG. Components, features and functions that remain essentially the same are in principle numbered with the same reference numerals. The following description is essentially limited to the same Figures 2 to 3 The differences between the embodiments in FIG. 1 and FIG. 2 are as follows, wherein reference is made to the corresponding embodiment for components, features, and functions that remain the same. Figure 2 and 3 Description of the embodiments in .

[0060] Figure 5 The noise protection element 200 in Figure 2 The noise protection element 37 in FIG. 1 differs in that it does not comprise a recess for accommodating the pinna of the patient 16 .

[0061] The design of the noise protection element 200 with respect to the coating surface layer 45 corresponds to the Figure 2 and Figure 3 Furthermore, the design of the noise protection element 200 with regard to the sound transmission elements and the materials and / or material properties also corresponds to the embodiment of Figure 2 implementation plan.

[0062] Although the details of the present invention have been illustrated and described in detail through preferred embodiments, the present invention is not limited to the disclosed examples and those skilled in the art may derive other variations therefrom without departing from the scope of protection of the present invention.

Claims

1. A magnetic resonance coil unit having a lower coil part, wherein the lower coil part comprises a support shell for supporting a patient's head, wherein the support shell comprises a head receiving area, It is characterized in that At least one noise protection element is provided, wherein the at least one noise protection element is reversibly positionable between a region of the support shell and an ear region of the patient.

2. The magnetic resonance coil unit according to claim 1, It is characterized by: At least one loudspeaker element is provided, which is encompassed by the support shell, wherein the at least one noise protection element has a sound transmission element.

3. The magnetic resonance coil unit according to claim 2, It is characterized in that The sound transmission element comprises a cutout extending through the noise protection element.

4. The magnetic resonance coil unit according to claim 2 or 3, It is characterized in that The at least one loudspeaker element is arranged in the region of the support shell.

5. The magnetic resonance coil unit according to claim 3, It is characterized by: The at least one noise protection element has a further recess for accommodating the patient's auricle.

6. The magnetic resonance coil unit according to claim 5, It is characterized in that The opening region of the sound transmission element is provided in the further recess for accommodating the patient's auricle.

7. The magnetic resonance coil unit according to any one of claims 5 to 6, It is characterized by: The at least one noise protection element has an edge region which is arranged at least partially around the further recess for accommodating the auricle of the patient in a circumferential direction of the further recess.

8. The magnetic resonance coil unit according to any one of claims 1 to 3, It is characterized in that The at least one noise protection element comprises an elastically compressible foam material.

9. The magnetic resonance coil unit according to claim 8, It is characterized by: The elastically compressible foam material includes a shape memory polymer.

10. The magnetic resonance coil unit according to any one of claims 1 to 3, It is characterized in that The at least one noise protection element has a painted surface layer.

11. The magnetic resonance coil unit according to claim 10, It is characterized by: The painted surface layer includes PU paint.

12. The magnetic resonance coil unit according to claim 10, It is characterized by: The painted surface layer is designed to be air-permeable.

13. The magnetic resonance coil unit according to claim 10, It is characterized in that The painted surface layer has a plurality of pores, wherein each pore has a diameter between 0.1 mm and 1.0 mm.

14. The magnetic resonance coil unit according to claim 10, It is characterized in that The painted surface layer is sprayed onto the foam material of the at least one noise protection element.

15. A magnetic resonance device, characterized in that: The magnetic resonance system comprises a magnetic resonance coil unit according to any one of the preceding claims.

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