Communication unit and magnetic resonance apparatus

Abstract

The utility model relates to a kind of magnetic resonance equipment (10) for the magnetic resonance examination of execution object, it includes for recording the imaging area of object and constitute the communication unit (40) for outputting acoustic signal, wherein the communication unit (40) is set relative to the imaging area, so that the propagation direction (61) of acoustic signal emitted by the communication unit (40) is directed to the opening (51) leading to the imaging area.The utility model also relates to a kind of communication unit (40) for magnetic resonance equipment (10), it has holding device (44) and output unit (41), wherein the output unit (41) constitutes for outputting acoustic signal, and wherein the communication unit (40) can be positioned relative to the magnetic resonance equipment (10) by means of the holding device (44), so that the propagation direction of the acoustic signal is directed to the opening (51) leading to the imaging area of the magnetic resonance equipment (10).

Description

Technical Field

[0001] This utility model relates to a magnetic resonance device for performing magnetic resonance examinations on objects. Background Technology

[0002] Regardless of the grammatical gender of a particular term, persons of either male or female gender are included.

[0003] In conventional MRI equipment, the loudspeaker used for communication with the patient is typically integrated into the equipment's enclosure or housing. The loudspeaker is, for example, integrated or embedded in the upper enclosure or sidewalls of the MRI equipment, particularly in a surface oriented along the longitudinal axis of the imaging area. This loudspeaker is typically oriented away from the imaging area of ​​the MRI equipment, which can cause acoustic problems when communicating with the patient. Furthermore, conventional loudspeakers are also located in the bottom or entry areas of the MRI equipment, and thus the loudspeaker's sensitive diaphragm is protected by mechanical coverings (e.g., perforated, slotted, or arched grilles made of metal). These mechanical coverings can impair the quality of the emitted acoustic signal and similarly cause problems when communicating with the patient. Especially in the case of loudspeakers located in the bottom area, the emitted acoustic signal is often reflected at multiple surfaces designed to absorb sound on their sides to reduce noise levels when using the MR system, which can lead to acoustic distortion. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a magnetic resonance imaging device and a communication unit that improves communication with the patient.

[0005] The stated objective is achieved through the subject matter of this utility model. Advantageous implementation methods and improvements that meet the objectives are the subject matter of this application.

[0006] The magnetic resonance imaging (MRI) device according to this invention is configured to perform MRI examination of an object. The MRI device includes an imaging region for recording the object.

[0007] Preferably, the magnetic resonance imaging (MRI) device is configured to perform an MRI examination of an object located within the imaging region of the MRI device. The MRI device can, for example, be configured to detect MRI data of an object located within the imaging region. Furthermore, the MRI device can be configured to detect MRI image data of an object located within the imaging region, particularly diagnostic MRI image data. The object can be a patient, such as a human or animal.

[0008] In a preferred embodiment, the magnetic resonance imaging device according to the present invention is designed as a closed-bore scanner or a scanner having a cylindrically shaped patient tunnel. The closed scanner may have a substantially cylindrically shaped imaging region. The main magnet of the closed scanner may include one or more magnet coils that surround the imaging region along the axial direction or rotational axis, particularly the axis of rotational symmetry, of the main magnet. The magnet coils may include electrical wires having negligible resistance at (or below) superconducting temperatures. The direction of the main magnetic field provided by the main magnet may be substantially parallel to the access direction leading to the imaging region and / or the axial direction of the cylindrical patient tunnel.

[0009] Similarly, it is conceivable that the magnetic resonance device according to this invention is designed as an open-bore scanner. An open-bore scanner may include two magnets positioned opposite each other, separated from each other by an imaging region. The direction of the main magnetic field of the open-bore scanner may be substantially orthogonal to the entry direction leading to the imaging region and / or orthogonal to the axial direction of the imaging region.

[0010] The main magnet of a magnetic resonance imaging (MRI) device may include one or more electromagnets or superconducting magnets. In a preferred embodiment, the main magnet includes or is composed of one or more cylindrically formed superconducting magnets or superconducting coils. The main magnet may be mechanically coupled to and / or fastened to a magnet holding structure. Preferably, the magnet holding structure is configured to carry and / or support the main magnet. The term "main magnet" may include one or more magnets or coils and a dedicated support structure for the magnets or coils.

[0011] According to this invention, the magnetic resonance device includes a communication unit configured to output acoustic signals.

[0012] The communication unit can be configured specifically for outputting acoustic and / or speech communications, such as voice instructions or inquiries. However, it is also conceivable that the communication unit can be configured to output one or more tones, melodies, musical movements, alarm sounds, and / or arbitrary noises.

[0013] Preferably, the communication unit has an output unit, particularly an electroacoustic transducer, such as a loudspeaker or diaphragm. The output unit can be configured to output an acoustic signal based on an electrical signal. The communication unit can have a control unit configured to output an electrical signal for controlling the output unit to the output unit. However, it is also conceivable that a magnetic resonance imaging device has a control unit configured to control the output unit by means of an electrical signal.

[0014] In one embodiment, the communication unit has a receiving unit. The receiving unit may be configured to detect acoustic signals or noise. In particular, the receiving unit may be configured to detect the patient's acoustic or speech communication and transmit it to a control unit or computing unit. The receiving unit may include, for example, a microphone.

[0015] The communication unit is positioned relative to the imaging area such that the propagation direction of the acoustic signal emitted by the communication unit points toward the opening leading to the imaging area.

[0016] The communication unit can be positioned relative to the imaging region such that the acoustic signal emitted by the communication unit propagates directly or in a straight line toward the opening leading to the imaging region. The propagation direction of the acoustic signal can be aligned with the pointing and / or directional direction of the electroacoustic transducer. It is conceivable that the electroacoustic transducer is configured to generate sound waves that travel forward in the propagation direction from the electroacoustic transducer toward the opening leading to the imaging region. In a preferred embodiment, the communication unit is oriented such that the electromechanical transducer or loudspeaker points toward the opening leading to the imaging region.

[0017] In particular, the communication unit can be configured relative to the imaging region such that acoustic signals or sound waves emitted by the communication unit are emitted in a direction toward the opening leading to the imaging region. In one embodiment, the communication unit is configured relative to the imaging region such that at least a portion of the sound waves generated by the communication unit enters the opening leading to the image region before the portion of the sound waves reflected by the surface of the examination space reaches the opening leading to the imaging region.

[0018] By constructing a communication unit for outputting acoustic signals toward the opening of the magnetic resonance imaging (MRI) device, acoustic distortion, which is associated with sound wave reflections at the surface of the examination space of the MRI device, can be advantageously reduced or avoided. This improves the quality of the output acoustic signal, particularly the quality of the acoustic signal used for communication with the patient.

[0019] In one embodiment of the magnetic resonance imaging device according to the present invention, the imaging region defines a longitudinal axis. The communication unit is arranged relative to the magnetic resonance imaging device such that the projection of the communication unit along the longitudinal axis toward the imaging region has a non-empty intersection with the opening leading to the imaging region.

[0020] The longitudinal axis can be aligned with the longitudinal axis of the patient-accommodating area of ​​the MRI scanner, particularly the longitudinal axis of the patient tunnel. Alternatively, the longitudinal axis can be oriented parallel to the longitudinal axis of the patient-accommodating area. Preferably, the longitudinal axis is aligned with the Z-axis and / or the column axis of the cylindrical patient tunnel of the MRI scanner.

[0021] The projection of the communication unit can be understood as an imaginary movement or translation of the communication unit toward the imaging area along the longitudinal direction, particularly toward the opening leading to the imaging area. Preferably, the communication unit is positioned relative to the imaging area and / or the patient receiving area such that the imaginary projection of the communication unit toward the imaging area along the longitudinal axis intersects with the surface defined by the opening leading to the imaging area.

[0022] A magnetic resonance imaging device having a communication unit according to the present invention advantageously allows for ensuring that emitted acoustic signals are incident on the imaging area or patient accommodation area of ​​the magnetic resonance imaging device.

[0023] In a preferred embodiment of the magnetic resonance imaging device according to the present invention, the communication unit is configured relative to the magnetic resonance imaging device such that uninterrupted visual contact can be achieved between the communication unit and the patient located in the imaging area.

[0024] For example, the communication unit can be configured relative to the imaging area and / or patient-accommodating area of ​​the MRI device such that the imaginary line representing the shortest connection between a point on the surface of the communication unit and a point on the surface of the patient located in the imaging area, depending on the application, is not interrupted by components of the MRI device. Components of the MRI device can be, in particular, the housing, covering, and / or walls of the patient-accommodating area, but can also be an examination table or patient support device.

[0025] By means of the arrangement of the communication unit relative to the imaging region according to this invention, the incidence of acoustic signals into the imaging region can be improved. In particular, refraction and / or reflection of the acoustic signals before entering the imaging region can be advantageously avoided. Therefore, the quality of the acoustic signals provided to the patient in the imaging region, for example, by means of the communication unit, can be improved.

[0026] In another embodiment of the magnetic resonance apparatus according to the present invention, the communication unit is disposed on the surface of the wall of the examination space facing the imaging area.

[0027] The examination space can be any space where the magnetic resonance imaging (MRI) device is installed or erected. Preferably, the examination space has one or more walls that limit the MRI device in one or more spatial directions or at least partially surround it along the circumferential direction. Particularly conceivable is that the examination space has a first wall and a second wall, wherein the first wall is located at a first end of the imaging region and the second wall is located at a second end of the imaging region. The first end of the imaging region is preferably positioned opposite the second end of the examination region.

[0028] The walls of the inspection space can be used to limit the inspection space in the horizontal direction.

[0029] The communication unit can be mechanically connected to and / or mounted on the wall surface. However, it is also conceivable that the communication unit is mounted on the top and / or bottom of the inspection space. In particular, the communication unit can be mounted on the wall of the inspection space by means of a retaining device.

[0030] By placing the communication unit on the wall of the examination space of the MRI machine, the overhead associated with technically integrating the communication unit into the housing of the MRI machine can be advantageously reduced or avoided. For example, the shielding and / or mechanical protective baffles or covers of the communication unit according to this invention are negligible compared to conventional communication equipment.

[0031] This invention includes an examination space having a magnetic resonance apparatus according to an embodiment described herein and / or a communication unit according to the invention.

[0032] In a preferred embodiment of the magnetic resonance device according to the present invention, the size of the gap between the communication unit and the opening leading to the imaging region is designed such that the communication unit is substantially located outside the magnetic field of the magnetic resonance device.

[0033] The communication unit can be set up in the main magnetic field of the magnetic resonance device, but also outside the stray magnetic field.

[0034] In one embodiment, the communication unit is disposed on the wall of the examination space at a distance of at least 50 cm, 70 cm, 90 cm, 110 cm, 130 cm, or 150 cm from the opening leading to the imaging area. In particular, the communication unit may be disposed outside the 30 Gauss line, 10 Gauss line, or 5 Gauss line of the magnetic resonance imaging device. Preferably, the communication unit is disposed relative to the imaging area such that the magnetic field strength of the stray magnetic field acting on the communication unit by the magnetic resonance imaging device is less than 70 mT, less than 60 mT, less than 50 mT, less than 40 mT, or less than 30 mT.

[0035] By setting the communication unit at a predetermined distance from the magnetic resonance imaging (MRI) device, the influence of the MRI's magnetic field, especially stray magnetic field, on the communication unit can be advantageously reduced or avoided. This reduces or avoids the costs associated with technical precautions used to shield the communication unit.

[0036] In another embodiment of the magnetic resonance device according to the present invention, the communication unit has a camera configured to detect optical data of an object located in the imaging region.

[0037] The camera can be designed as a two-dimensional or three-dimensional camera (e.g., an infrared camera or a time-of-flight camera). The camera can be specifically designed to enable visual monitoring of the patient during an MRI examination. However, it is also conceivable that the camera could be configured to detect or monitor the patient's positioning and / or head holding and / or the positioning of local coils in the MRI apparatus.

[0038] In one embodiment, the camera is integrated into the housing of the communication unit. Preferably, the housing of the communication unit has a dedicated mounting space for the camera according to the embodiment described below.

[0039] The magnetic resonance imaging device according to this invention can advantageously achieve modular or optional camera integration, which can be implemented with low technical costs based on the prerequisites of the examination space and / or the operator's requirements. The communication unit according to this invention also cooperatively meets the requirements of the camera system for patient monitoring (e.g., uninterrupted visual contact between the camera and the patient positioned in the imaging area according to the application). Furthermore, the communication unit according to this invention advantageously avoids the technical costs associated with separate integration of speakers and cameras.

[0040] It is conceivable that even when there is no camera setup or installation in the housing of the communication unit, the housing of the communication unit still has free space or installation space for the camera.

[0041] In one embodiment, the magnetic resonance device according to the present invention has an additional communication unit, wherein the communication unit is disposed at a first end of the imaging region, and wherein an additional communication unit is disposed at an end of the imaging region opposite to the first end.

[0042] The communication unit can be positioned at a distance from the first end of the imaging region as defined above. Similarly, it is conceivable that another communication unit can be positioned at a distance from the second end of the imaging region as defined above. Preferably, the second end of the imaging region is positioned opposite the first end of the imaging region.

[0043] For example, a communication unit may be located at the head end of the imaging area, while another communication unit may be located at the foot end of the imaging area. The head end may correspond to an opening leading to the imaging area located at the head of a patient fully positioned within the patient receiving area. The foot end of the imaging area may correspond to the end of the imaging area or the patient receiving area opposite to the head end.

[0044] In a preferred embodiment, the communication unit and another communication unit each have a camera according to the embodiments described above, so that the patient positioned in the imaging area can be monitored from multiple spatial directions.

[0045] By utilizing multiple communication units, the quality of the acoustic signal used for positioning the patient in the patient accommodation area can be advantageously improved, as the acoustic signal can be incident on the imaging area or patient accommodation area from multiple ends. Furthermore, multiple cameras can advantageously improve the monitoring of the patient, but also the necessary local coils, as well as the preparation and / or positioning process.

[0046] The communication unit according to this invention for use in a magnetic resonance imaging (MRI) device includes a holding device and an output unit. The output unit is configured to output an acoustic signal. The output unit can be positioned relative to the MRI device by means of the holding device such that the propagation direction of the acoustic signal points toward an opening leading to the imaging region of the MRI device.

[0047] Preferably, the communication unit is mechanically separated or decoupled from the magnetic resonance imaging (MRI) device. For example, the communication unit may be mechanically connected to the walls, top, and / or floor of the examination space of the MRI device by means of a holding device according to the embodiments described above.

[0048] The retaining device is preferably configured to secure the communication unit to the walls, top, and / or floor of the examination space, such that the output unit of the communication unit faces an opening leading to the imaging area of ​​the magnetic resonance imaging (MRI) device mounted in the examination space. Preferably, the retaining device is configured to provide a mechanical connection between the housing of the communication unit and the walls, top, and / or floor of the examination space. The mechanical connection may include a form-fit connection, a force-fit connection, and / or a material-fit connection. For example, the retaining device may include one or more bolts, pins, and / or nails that connect the communication unit to the walls, top, and / or floor of the examination space. In a preferred embodiment, the retaining device has a hinge, a joint, and / or a movable support that allows for the orientation and / or spatial positioning adjustment of the communication unit relative to the MRI device and / or the examination space.

[0049] The communication unit can be positioned relative to the magnetic resonance imaging device by means of a holding device, such that a portion of the acoustic signal emitted by the output unit enters the opening leading to the imaging region without refraction and / or reflection at components of the magnetic resonance imaging device. In particular, the communication unit can be reversibly or irreversibly mounted relative to the magnetic resonance imaging device by means of a holding device, such that the output unit emits the acoustic signal into the opening leading to the imaging region without refraction and / or reflection at components of the magnetic resonance imaging device.

[0050] The communication unit according to this invention can be installed in the examination space based on modular principles or modular design principles, regardless of the model of the MRI equipment. This advantageously reduces or avoids the development and / or manufacturing costs of communication units matched to specific models of MRI equipment. Furthermore, the communication unit according to this invention allows for measures to mechanically protect the electroacoustic transducer or speaker from accidental collisions with patients or medical personnel. Another advantage is that the communication unit can be integrated into patient communication systems and / or patient monitoring systems in a favorable and standardized manner. This reduces the expenses and / or costs associated with MRI equipment.

[0051] In another embodiment, the communication unit according to the present invention has a housing that at least partially surrounds the output unit on its outer circumferential side. The housing is configured to influence the acoustic characteristics of the output unit.

[0052] The housing of the communication unit can be made of any metal, preferably a non-magnetic metal. For example, the housing can be made of plastic, synthetic materials, and / or natural materials, especially wood or cellulose fibers. In a preferred embodiment, the housing comprises an acoustically optimized material, such as carbon, composite materials (multiplex), or birch plywood. The housing may also comprise or be made of metal. Such a housing can advantageously provide electromagnetic shielding for components housed within it.

[0053] The housing can enclose a volume that influences the acoustic characteristics of the acoustic signals emitted by the output unit. For example, the housing can have a recess that serves to position the electromechanical transducer of the output unit. The position of the speaker relative to the housing can significantly affect the patient's perception of the acoustic signals as they are positioned within the imaging region of the MRI device. Furthermore, the housing can be configured to suppress standing waves within the housing to avoid speaker booming. In particular, it is conceivable that the geometry of the housing is configured to improve the acoustic radiation of the output unit toward the opening leading to the imaging region.

[0054] Preferably, the housing is configured to influence the acoustic characteristics of the output unit, thereby producing an acoustic spectrum that is pleasant and / or clear to a patient positioned in the imaging area. The influence of the acoustic characteristics can be achieved, for example, by means of the aforementioned characteristics of the housing.

[0055] The housing can also be configured to protect the output unit from external influences, such as preventing unintended collisions with objects or people. In particular, the housing can form part of a side of the electroacoustic transducer corresponding to the communication unit that is away from the direction of acoustic signal propagation. For example, the housing has an opening that allows acoustic signals to be emitted through the opening toward an opening leading to the imaging region of the magnetic resonance imaging device.

[0056] The communication unit according to this invention is advantageously independent of the geometry, structure, and / or influence of the magnetic resonance imaging (MRI) device. In particular, the housing of the communication unit can be improved or optimized in terms of perceived acoustic characteristics without having to consider the limitations imposed by integration into the MRI device.

[0057] In one embodiment, the communication unit according to the present invention has a mounting space for a camera, wherein the housing at least partially surrounds the output unit and the mounting space for the camera on the outer circumferential side.

[0058] The mounting space can include any volume corresponding to or exceeding the camera's volume. The volume defined by the mounting space can be consistent with the camera's size, shape, and / or three-dimensional form. The mounting space may also include the volume required for electrically connecting the camera to a control unit or evaluation unit. Preferably, the housing has at least one cutout or opening for the camera's optical sensor.

[0059] In a preferred embodiment, if no camera is integrated into the communication unit, the mounting space provides additional housing volume for the output unit. For example, the mounting space can be configured to improve the perceived acoustic characteristics of the acoustic signals emitted by the output unit. In another embodiment, the space reserved for the optical sensor of the camera can serve as a bass-reflex opening. In particular, the mounting space can be configured to improve the patient-perceived acoustic characteristics of the acoustic signals emitted by the output unit.

[0060] The communication unit according to this invention, with its installation space, can be used modularly and advantageously with multiple models of MRI equipment, thereby reducing or avoiding the cost and / or expense of providing individualized solutions. For example, the communication unit according to this invention can also be used with MRI equipment that does not support camera-based monitoring of patients. In such MRI equipment, the perceived quality of the emitted acoustic signals can be improved by enlarging the housing and / or the bass-reflection opening of the communication unit.

[0061] In another embodiment, the communication unit according to the present invention includes a camera, which occupies mounting space for the camera. The camera is configured to detect image data of a patient located in the imaging area of ​​a magnetic resonance imaging device.

[0062] The camera can be designed according to the embodiments described above. Preferably, the camera is designed as a two-dimensional or three-dimensional camera. The camera may have an optical sensor configured to detect optical image data of an object located in the imaging region of the magnetic resonance device.

[0063] The communication unit can be positioned, by means of a holding device, such that not only the output unit but also the camera's optical sensor points toward the opening leading to the imaging region of the magnetic resonance imaging (MRI) device. Specifically, the communication unit can be positioned such that a first imaginary segment representing the shortest connection between a point on the surface of the camera's optical sensor and a point located on an object in the imaging region is not interrupted by components of the MRI device. Furthermore, the communication unit can be positioned, by means of a holding device, such that a second imaginary segment representing the shortest connection between a point on the surface of the output unit and a point located on an object in the imaging region is not interrupted by components of the MRI device. Preferably, the geometry of the communication unit's housing is configured such that the lengths of the first and second imaginary segments are substantially the same. For example, the lengths of the first and second imaginary segments can deviate from each other by less than 10%, less than 5%, or preferably less than 2%.

[0064] The housing of the communication unit is preferably configured to hold the output unit and the camera in a predetermined relative spatial arrangement. In particular, the housing may be configured to allow the communication unit to be mounted on the wall, top, and / or floor of the examination space by means of a holding device. In another embodiment, the housing and / or holding device are configured to hold the output unit and the camera's optical sensor in a spatial position and / or orientation characterized by aligning the output unit and the optical sensor with an opening leading to the imaging area of ​​the magnetic resonance imaging device, depending on the application.

[0065] The communication unit according to this invention advantageously combines functions for monitoring patients with functions for communicating with patients within a modular assembly. The communication unit according to this invention advantageously allows such functionality to be implemented based on the technical feasibility or prerequisites of the magnetic resonance imaging (MRI) device.

[0066] Furthermore, the communication unit according to this invention can realize a simple and robust orientation of the output unit, as well as the optical sensor of the camera, toward the opening leading to the imaging area of ​​the magnetic resonance device. Attached Figure Description

[0067] Further advantages and details will become apparent from the following description of the embodiments in conjunction with the accompanying drawings. As shown in the schematic view:

[0068] Figure 1 This shows a conventional magnetic resonance imaging (MRI) device.

[0069] Figure 2 An embodiment of the magnetic resonance device according to the present invention is shown.

[0070] Figure 3 An embodiment of the magnetic resonance device according to the present invention is shown.

[0071] Figure 4 An embodiment of the magnetic resonance device according to the present invention is shown.

[0072] Figure 5 An embodiment of the communication unit according to the present invention is shown. Detailed Implementation

[0073] exist Figure 1 A conventional magnetic resonance imaging (MRI) device 1 is shown. The MRI device 1 includes a field generation unit 11 having a main magnet 12 with one or more permanent magnets, electromagnets, or superconducting magnets for generating a strong and particularly uniform main magnetic field 13 (BO field). Furthermore, the MRI device 1 includes a patient accommodating region 14 configured to accommodate a subject or patient 15 during an MRI examination. In the illustrated embodiment, the patient accommodating region 14 is cylindrically configured and surrounded circumferentially by the main magnet 11. However, different configurations of the patient accommodating region 14 are conceivable in principle, however. The patient accommodating region 14 may substantially coincide with the imaging region of the MRI device 1.

[0074] exist Figure 1 In the example shown, the patient is 15. Patient 15 can be positioned in the patient receiving area 14 by means of a patient support device 16 of the magnetic resonance imaging (MRI) device 1. The patient support device 16 has an examination bed 17 that is movable within the patient receiving area 14.

[0075] The field generation unit 11 also has a gradient system with one or more gradient coils 18 for generating a gradient magnetic field, which is used for position encoding during magnetic resonance imaging (MRI). The gradient coils 18 are controlled by a gradient control unit 19 of the MRI apparatus 1.

[0076] The field generation unit 11 also includes a radio frequency (RF) system with an RF antenna, which in this embodiment is configured as a body coil 20 fixedly integrated into the magnetic resonance imaging (MRI) device 1. The body coil 20 is designed to excite nuclear spins within a main magnetic field 13 generated by the main magnet 12. The body coil 20 is controlled by the RF unit 21 of the MRI device 1 and directs high-frequency excitation pulses onto an imaging region, which is substantially formed by the patient reception area 14 of the MRI device 1. The body coil 20 can also be configured to receive magnetic resonance signals. Preferably, the body coil 20 is a receiving unit or part of a receiving unit of the MRI device 1.

[0077] The magnetic resonance imaging (MRI) device 1 may have additional components, such as a local coil 26. The local coil 26 may be positioned at a location appropriate for the application in a diagnostically important body region of the patient 15. The local coil 26 preferably has multiple antenna elements that constitute a magnetic resonance signal for detecting the important body region of the patient 15 and transmitting it to the computing unit 28 and / or the control unit 22. For this purpose, the local coil may be connected to the radio frequency unit 21 and the control unit 22 via electrical connection lines 27 or other signal connections. Similar to the body coil 20, the local coil 26 may also be configured to excite nuclear spins in a diagnostically important body region of the patient 15. For this purpose, the local coil 26 may be controlled by the radio frequency unit 21.

[0078] To control the magnetic resonance imaging (MRI) device 1, particularly the gradient control unit 19 and the radio frequency unit 21, the MRI device 1 includes a control unit 22. The control unit 22 is configured to control the execution of imaging sequences, such as GRE (gradient echo) sequences, TSE (turbo spin echo) sequences, or UTE (ultra-short echo time) sequences. Furthermore, the control unit 22 includes a computing unit 28 to evaluate the magnetic resonance signals detected during the MRI examination using the imaging sequences.

[0079] The magnetic resonance imaging (MRI) device 1 may include a user interface 23 having a signal connection to a control unit 22. Control information for the MRI examination, such as imaging parameters, may be displayed on a display unit 24 of the user interface 23, such as at least one monitor. The display unit 24 may be specifically designed to provide a graphical user interface showing diagrams of important body regions of the patient 15. Furthermore, the user interface 23 has an input unit 25 by means of which the user can input or change parameters for the MRI examination.

[0080] Typically, a conventional magnetic resonance imaging (MRI) device 1 has a speaker 41 integrated into the housing 30 of the MRI device 1. The speaker 41 is configured to provide an indication output to the patient 15 and / or enable communication with the patient 15. Because it is integrated into the housing 30 of the MRI device 1, the speaker 41 is typically oriented away from the opening leading to the patient receiving area 14. As a result, acoustic signals are transmitted to the patient receiving area 14 only after reflection at the walls and / or objects in the examination space 70. The reflection of acoustic signals can cause acoustic distortion and reduce the quality or intelligibility of the acoustic signals used to locate the patient 15 in the patient receiving area 14. Furthermore, the integration of the speaker 41 into the housing 30 of the MRI device 1 requires additional technical means to protect the speaker 41 from the main magnetic field 13, the gradient magnetic field generated by the gradient control unit 19, the field generated by the radio frequency unit 21, and, however, the stray fields of the MRI device 1.

[0081] Figure 2 An embodiment of a magnetic resonance imaging (MRI) device 10 according to the present invention, having a communication unit 40, is shown. The communication unit 40 is currently mounted on the wall 71 of the examination space 70. The communication unit 40 is arranged relative to the MRI device 10 such that its output unit or speaker points toward the opening 51 leading to the patient receiving area 14. Figure 1 In contrast to the conventional MRI device 1 shown, the acoustic signal emitted by the communication unit 40 is directly incident into the opening 51 leading to the patient accommodation area 14, thereby avoiding reflection of the acoustic signal at parts of the examination space 70 and / or the MRI device 10.

[0082] Preferably, the communication unit 40 is configured relative to the imaging region or patient receiving region 14 of the magnetic resonance imaging device 10 such that the imaginary segment 60 representing the shortest connection between a point on the surface of the communication unit 40 and a point on the surface of the patient 15 located in the patient receiving region 14, depending on the application, is not interrupted by components of the magnetic resonance imaging device 10. Components of the magnetic resonance imaging device may, in particular, be portions of the housing, the covering 30, and / or the walls of the patient receiving region 14. The imaginary line 60 may correspond to the line of visual contact between the communication unit 40 and the patient 15 located within the imaging region.

[0083] In the illustrated example, the communication unit 40 is connected to the control unit 22 of the magnetic resonance imaging device 10. The control unit 22 may be configured to output instructions for the patient 15, particularly respiratory instructions, to the patient 15 in the patient accommodation area 14 via the output unit of the communication unit 40.

[0084] Figure 3Another embodiment of the magnetic resonance imaging (MRI) device 10 according to the present invention is shown. In the present embodiment, the MRI device 10 according to the present invention has a communication unit 40a and an additional communication unit 40b. The communication unit 40a is disposed at end 14a of the patient receiving area 14, and the additional communication unit 40b is disposed at end 14b of the patient receiving area 14 opposite to end 14a. End 14a here corresponds to the foot end of the MRI device 10, while end 14b corresponds to the head end of the MRI device 10. Obviously, the patient 15 can also be transported into the patient receiving area 14 head-forward by means of the examination bed 17. In this case, end 14a may correspond to the head end, and end 14b may correspond to the foot end.

[0085] exist Figure 3 In the example shown, two communication units 40a and 40b each have a camera configured to detect optical data of an object positioned within the patient accommodation area 14. The cameras of communication units 40a and 40b enable monitoring of the patient 15 from multiple sides, allowing for the identification of emergencies such as injury to the patient 15, panic attacks, and / or undesirable reactions to contrast agents. Furthermore, at least one camera can be designed as a three-dimensional camera, capable of identifying the patient 15 and / or the local coil 26 (see [link to example]). Figure 2 (This refers to the correct or incorrect positioning used in magnetic resonance imaging.)

[0086] Communication units 40a and 40b are currently connected to user interface 23 via signal connections 27a and 27b. User interface 23 can be configured to output image data received by the cameras of communication units 40a and 40b to the operator of the magnetic resonance imaging device 10 or to visualize it via display unit 24. Furthermore, user interface 23 can be configured to enable communication with patient 15, wherein communications received by the operator in monitoring space 72 via a microphone (not shown) are output to patient 15 in examination space 70 via output units of communication units 40a and 40b.

[0087] In another embodiment, at least one communication unit 40 is connected to the control unit 22 of the magnetic resonance device 10 (see [link]). Figure 2 The control unit 22 may be configured to output instructions to the patient 15 via the communication unit 40 during an MRI examination. The instructions may include, for example, respiratory instructions, particularly regarding the timing and / or duration of apnea. However, it is also conceivable that the instructions may include instructions for adjusting the posture of the patient 15 and / or the setting of the patient 15's limbs.

[0088] exist Figure 4Another embodiment of the magnetic resonance imaging (MRI) device 10 according to the present invention is shown. The communication unit 40 is currently mounted on the wall 71 of the examination space 70. Specifically, the communication unit 40 is configured relative to the patient receiving area 14 or imaging area of ​​the MRI device 10 such that acoustic signals emitted by the output unit or speaker 41 are emitted along the propagation direction 61 into the opening 51 leading to the patient receiving area 14. (As shown in...) Figure 4 As shown in the diagram, the route segment defined by the propagation direction 61 (or the hypothetical route segment 60; see also...) Figure 2 The acoustic signal is not interrupted by the components of the MRI device 10. Therefore, the acoustic signal can be directly incident into the patient receiving area 14 without being reflected or refracted at the components of the MRI device 10.

[0089] In the example shown, the communication unit 40 is arranged relative to the magnetic resonance device 10 by means of the holding device 44 such that the projection of the communication unit 40 toward the patient receiving area 14 along the longitudinal axis 62 of the patient receiving area 14 or the Z-axis of the magnetic resonance device 10 has a non-empty intersection with the opening 51 leading to the patient receiving area 14.

[0090] However, the communication unit 40 may also be configured relative to the magnetic resonance device 10 such that the projection of the communication unit 40 along the longitudinal axis 62 of the patient receiving area 14 toward the patient receiving area 14 has an empty intersection with the opening 51 leading to the patient receiving area 14, provided that the propagation direction 61 of the acoustic signal emitted by the communication unit is directly pointed to the opening 51 leading to the patient receiving area 14 and the acoustic signal can be incident into the opening leading to the patient receiving area 14 substantially without refraction and / or reflection at objects and / or components of the magnetic resonance device 10 in the examination space 70.

[0091] The communication unit 40 currently has an output unit 41 and a camera 42. However, it is conceivable that the communication unit 40 only has the output unit 41, and the mounting space for the camera 42 is assumed to remain empty. The empty mounting space is preferably configured to improve the sound characteristics perceived by the output unit 41 in the examination space 70 or the patient accommodation area 14 according to the embodiment described above.

[0092] Figure 5 An embodiment of the communication unit 40 according to the present invention is shown. The communication unit 40 currently has a housing 43 that at least partially surrounds an output unit 41 (e.g., a speaker) and a camera 42 on its outer circumferential side. The housing 43 has a recess for the output unit 41 and an additional recess for the optical sensor of the camera 42. Furthermore, the housing 43 is mechanically connected to a holding device 44, which is currently capable of being mounted on a vertical surface, such as a wall. The camera 42, mounted in the housing 43, can occupy a mounting space (not shown) reserved for the camera 42.

[0093] In one embodiment, a communication unit 40 without a camera 42 exists. In this case, the mounting space reserved for the camera 42 (not shown) can remain empty, and the empty space for the optical sensor of the camera 42 can be used as a bass-reflection opening. However, it is also conceivable that the empty space for the optical sensor of the camera 42 can be closed by means of a plug or cover.

[0094] The housing 43 of the communication unit 40 is configured to hold the output unit 41 and the camera 42 in a predetermined relative spatial arrangement. Preferably, the housing 43 is configured to hold the optical sensors of the output unit 41 and the camera 42 in a predetermined spatial position and / or orientation, said spatial position and / or orientation being characterized by the output unit 41 and the optical sensors facing the opening 51 leading to the patient receiving area 14 according to the application. The housing 43 may be particularly configured to hold the output unit 41 and the camera 42 relative to each other such that the output unit 41 and the camera 42 are oriented toward the opening 51 leading to the patient receiving area 14. Figure 4 ).

[0095] Of course, the magnetic resonance imaging (MRI) device 10 according to this invention may include other components typically included in MRI devices. The general operation of MRI devices is well known to those skilled in the art. Therefore, detailed descriptions of other components or the detection of measurement data in MRI examinations are omitted.

[0096] Although the details of the present invention have been described and illustrated in detail with reference to preferred embodiments, the present invention is not limited to the disclosed examples and other variations can be derived by those skilled in the art without departing from the protection scope of the present invention.

Claims

1. A magnetic resonance imaging (MRI) device (10) for performing MRI examination of an object, characterized in that, The magnetic resonance device (10) includes an imaging region for recording an object and a communication unit (40) for outputting acoustic signals, wherein the communication unit (40) is configured relative to the imaging region such that the propagation direction (61) of the acoustic signal emitted by the communication unit (40) points toward an opening (51) leading to the imaging region.

2. The magnetic resonance device (10) according to claim 1, characterized in that, The imaging region defines a longitudinal axis (62) and wherein the communication unit (40) is configured relative to the magnetic resonance device (10) such that the projection of the communication unit (40) toward the imaging region along the longitudinal axis (62) has a non-empty intersection with the opening (51) leading to the imaging region.

3. The magnetic resonance device (10) according to claim 1 or 2, characterized in that, The communication unit (40) is configured relative to the magnetic resonance device (10) to enable uninterrupted visual contact between the communication unit (40) and the patient (15) located in the imaging area.

4. The magnetic resonance apparatus (10) according to any one of the preceding claims, characterized in that, The communication unit (40) is disposed on the surface of the wall (71) of the examination space (70) including the magnetic resonance device (10) facing the imaging area.

5. The magnetic resonance apparatus (10) according to any one of the preceding claims, characterized in that, The size of the gap between the communication unit (40) and the opening (51) leading to the imaging region is designed such that the communication unit (40) is positioned outside the magnetic field of the magnetic resonance device (10).

6. The magnetic resonance apparatus (10) according to any one of the preceding claims, characterized in that, The communication unit (40) has a camera (42) configured to detect optical data of an object located in the imaging area.

7. The magnetic resonance apparatus (10) according to any one of the preceding claims, characterized in that, The magnetic resonance device (10) has an additional communication unit, wherein the communication unit is disposed at a first end of the imaging region, and wherein the additional communication unit is disposed at an end of the imaging region opposite to the first end.

8. A communication unit (40) for a magnetic resonance device (10), the communication unit (40) having a holding device (44) and an output unit (41), characterized in that, The output unit (41) is configured to output an acoustic signal, and the communication unit (40) is positioned relative to the magnetic resonance device (10) by means of the holding device (44) such that the propagation direction of the acoustic signal points toward the opening (51) leading to the imaging region of the magnetic resonance device (10).

9. The communication unit (40) according to claim 8, characterized in that, The communication unit has a housing (43) that at least partially surrounds the output unit (41) on its outer circumferential side, wherein the housing (43) is configured to influence the acoustic characteristics of the output unit (41).

10. The communication unit (40) according to claim 9, characterized in that, The communication unit has a mounting space for a camera (42), wherein the housing (43) at least partially surrounds the output unit (41) and the mounting space for the camera (42) on the outer circumferential side.

11. The communication unit (40) according to claim 10, characterized in that, The communication unit has a camera (42) that occupies mounting space for the camera (42), wherein the camera (42) is configured to detect image data of a patient (15) located in the imaging region of the magnetic resonance device (10).

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