CN209894956U

CN209894956U - Magnetic resonance apparatus

Info

Publication number: CN209894956U
Application number: CN201821859324.0U
Authority: CN
Inventors: S.比伯; T.斯佩克纳
Original assignee: Siemens Healthcare GmbH
Current assignee: Siemens Healthcare GmbH
Priority date: 2017-11-13
Filing date: 2018-11-12
Publication date: 2020-01-03
Anticipated expiration: 2028-11-12
Also published as: DE202017005884U1

Abstract

The utility model relates to a magnetic resonance equipment (1), it has: a magnetic resonance device (7) arranged in the magnet space (2), said magnetic resonance device having a plurality of magnet space components for receiving magnetic resonance data of the examination subject; a plurality of communication lines (29) connecting the magnet space components with equipment components arranged outside the magnet space (2) or components outside the equipment; and a plurality of power supply lines (31) which connect the magnet space components to an electrical power supply, according to the invention, all communication lines (29) and all power supply lines (31) are led out of the magnet space (2) in a common cable (18). The utility model provides a save the cost and can be with the magnetic resonance equipment who consumes the installation that reduces.

Description

Magnetic resonance apparatus

Technical Field

The utility model relates to a magnetic resonance equipment, it has:

a magnetic resonance apparatus arranged in a magnet space, the magnetic resonance apparatus having a plurality of magnet space components for receiving magnetic resonance data of an examination object,

-a plurality of communication lines connecting the magnet space components with components of the apparatus arranged outside the magnet space or components outside the apparatus, and

a plurality of power supply lines connecting the magnet space components with an electric power supply.

Background

Magnetic resonance imaging is now an accepted and commonly used tool in medical services, especially diagnostics, for patients. In this case, the corresponding magnetic resonance system, as is known from the prior art, has a magnetic resonance device arranged in a magnet space, which is usually shielded. The magnetic resonance apparatus comprises a main magnet unit, in which, in addition to a main magnet (basic field magnet), which is usually superconducting, for generating a basic magnetic field (B0 field) of the magnetic resonance apparatus, other imaging components can also be mounted or present as accessories, in particular a gradient coil arrangement and a high-frequency coil arrangement. The spins oriented in the basic magnetic field can be excited by means of a radio-frequency signal of the radio-frequency coil arrangement and the resulting excitation can in turn be received as a radio-frequency signal. The gradient coils enable a modification of the basic magnetic field for localization. Such magnetic resonance apparatuses usually have, as further components, cooling systems for the different imaging components and/or at least one static and/or dynamic shielding. In cylindrical magnetic resonance devices, basic field magnets or corresponding main magnet units provided with diaphragms surround a patient support into which a patient can be moved by means of a patient bed.

At least a part of the imaging components is equipped with power electronics, wherein, by way of example, amplifiers for the high-frequency coil arrangement and gradient coils of the gradient coil arrangement are mentioned in particular. Such power electronics are arranged outside the magnet space, for example in an operating space of at least one electronics cabinet, which may contain a magnetic resonance system, and/or in an operating space, in which an operating device, for example an operating console, may also be arranged. Other components of the magnetic resonance system, such as components of a control device, components of a monitoring device for monitoring the operation of the magnetic resonance device, and the like, can also be arranged in such an operating space and/or operating space. The components listed here by way of example, i.e. in particular the imaging component, the power electronics, the monitoring device, the control device and the operating device, must communicate with one another and be supplied with electrical power in order to produce the function of the magnetic resonance apparatus, which usually results in high outlay, in particular in terms of wiring and wiring. Furthermore, there is a great space requirement, since due to the high magnetic fields, many components of the magnetic resonance apparatus need to be arranged outside the actual magnet space.

Due to the increasing cost pressure in the healthcare field, magnetic resonance devices should be cheaper. The starting point for this is to use new technologies, such as new magnet technologies, reduced performance values in the most sensitive market segments, integration of individual components into larger overall components and use new system architectures. The Life Cycle Cost (Life Cycle Cost) of a magnetic resonance system is generally composed here of the individual piece Cost, the installation Cost on site (including transport), the operating Cost during a clinical operation, and the disassembly or disposal Cost. The focus of current efforts is the cost of a single piece, but there is also installation cost, as installation cost is the next largest expenditure in time for the buyer. As already explained, the problem with regard to the installation costs is that the current system architecture of the magnetic resonance system is composed of a magnetic resonance device in the magnet space, electronics in at least one electronics cabinet in the operating space, and at least one operating device in the operating space. These three spaces are connected to each other by a large number of cables and pipes so as to obtain electric power, information/data, cooling water, high-frequency signals, and gradient currents at the respective locations. This results in a locally very large number of lines between the different positions, which must be filtered by corresponding filter devices in the transition to the magnet space for high-frequency shielding reasons, in order to ensure a high-frequency interference-free magnetic resonance operation.

DE102006052437a1 and DE102008017819B3 each show the structure of a magnetic resonance control system, and DE102007058872a1, US20090137898a1, US20160174928a1 each show a device for transmitting data in a magnetic resonance system.

SUMMERY OF THE UTILITY MODEL

The present invention is therefore based on the object of providing a magnetic resonance system which is cost-effective and can be installed with reduced expenditure.

This technical problem is solved according to the utility model by a magnetic resonance device.

According to the utility model discloses a magnetic resonance equipment has:

a plurality of power supply lines connecting the magnet space components with an electric power supply,

wherein all communication lines and all power supply lines are led out of the magnet space in a common cable.

According to the invention, the overall wiring is reduced in such a way that, in particular from the operating space (technical space) and/or operating space, a single cable can be introduced into the magnet space. In this case, a plurality of individual lines, in particular communication lines and power supply lines, are integrated in this cable. In this way, the installation of the magnetic resonance system is significantly simplified and the susceptibility to error is reduced, since incorrectly inserted plugs and the like can be significantly reduced. In this way, in particular, a reduction in the installation costs can be achieved. This also applies to the working time required in the installation.

In a particularly advantageous embodiment, it is provided that the common cable is closed at least within the magnet space by a single, common plug, wherein the magnetic resonance device has a plug-in position corresponding to the plug. A common plug on the cable, which further simplifies the installation and reduces the effort, but in particular also reduces the error susceptibility, should transmit all the information and/or data for communication and all the necessary electrical power. It is therefore particularly preferred that the common cable, although containing a plurality of individual lines, is connected via a single plug.

In this connection, it is also advantageous for the cables which end outside the magnet space in a single, common plug to have a distribution device, in particular in an electronics cabinet, for distributing the individual lines to the respective connectors. Such a distribution device can be arranged, for example, in an operating space (technical space) of the magnetic resonance apparatus, wherein an arrangement in an operating space is also possible in which an operating device, in particular an operating console, has been arranged. Such a distribution device can finally provide at least a part of the interconnection (Weiterverbindungen) in a pre-installed manner or can simplify the connections thereof, the provision of such a distribution device further facilitating as simple an installation of the magnetic resonance apparatus as possible, since both parties only need to connect a single plug of a common cable.

In particular, it can be provided that the distribution device has a plurality of already pre-plugged connections for the lines of the common cable and/or a power supply unit for supplying an input voltage required by at least a part of the magnet space components from the mains ac voltage. For at least some lines of the common cable, i.e. at least some communication lines and/or power supply lines, pre-plug connectors may be present on the distributor side in order to keep the effort and error susceptibility during installation as low as possible. In this case, the distribution device or other devices already pre-connected to the distribution device, for example a power supply unit, may contain, in particular, components of the magnetic resonance apparatus which are directly relevant for the operation of the communication line and/or the power supply line. Examples of this are transducers, distributors, control components and the like for the communication lines and power electronics for the power supply lines.

For example, it can be provided that the distributor device and/or the power electronics connected to the distributor device have at least one amplifier device for supplying high-frequency signals and/or gradient currents. This means that the amplifier devices usually required in magnetic resonance imaging may already be present in the distribution device and/or the connected devices in order to output the corresponding electrical power directly therefrom onto the power supply lines of the common cable. Such Amplifier devices include, for example, Gradient Power amplifiers (GPA-Gradient Power amplifiers) and high Frequency Power amplifiers (RFPA-Radio Frequency Power amplifiers). Other power electronics, such as analog-digital converters for received high-frequency signals and the like, can also be present on the distributor side and/or on the associated component side of the magnetic resonance system.

Within the scope of the present invention, a design is preferred in which further components, in particular power electronics components, and therefore also referred to as magnet space components, can also be arranged in the magnet space. In general, a high integration of the components of the magnetic resonance apparatus in the magnet space, in particular in the structural unit with the magnetic resonance device and/or as a structural unit fixedly connected to the magnetic resonance device, is in principle advantageous in terms of a reduction in the required communication lines and/or power supply lines, which in turn simplifies their routing in the common cable.

For example, it can be provided that at least one power electronics of the magnetic resonance apparatus is arranged in the magnet space. These power electronics components can be, in particular, amplifier devices, in particular high-frequency power amplifiers and/or gradient power amplifiers. For example, it is conceivable to provide a complete transmission system on the magnet space side, which includes a small-signal generating unit, a high-frequency power amplifier, and a power monitoring device. The same applies to receiving systems whose analog-to-digital converter is already arranged, for example, on the magnetic resonance apparatus side or generally in the magnet space. A gradient system comprising a gradient power amplifier with a small-signal generating unit can also be arranged in the magnet space, which also applies to the control device or its components and/or the monitoring device. Such a control device may have, for example, a control unit and/or an evaluation unit, for example an image reconstruction unit, for receiving magnetic resonance data by means of an imaging component as a magnet space component.

In this case, it is also conceivable to provide a system unit as a magnet space component in the magnet space, which receives the mains ac voltage via a power supply line and converts it into a corresponding input voltage for the other magnet space components. Such a system unit may for example comprise a switching power supply component and/or a transformer.

However, it is of course also feasible when providing a distribution device to arrange such a power supply unit outside the magnet space, wherein the power supply unit can likewise have corresponding switching power supply components and/or transformers. In this embodiment, the power supply line of the common cable serves to conduct the electrical power provided in each case at the respective input voltage further to the magnet space component. This may be advantageous in terms of interference potential, since this electrical power is usually transmitted as direct current or at least at a lower frequency, for example, as will also be explained in more detail below.

Preferably, the common cable can have at least one shielding device acting on a plurality of lines of the common cable for shielding fields generated by the lines from each other and/or from fields of the magnet space for magnetic resonance imaging. Due to the large number of lines, i.e. communication lines and power supply lines, being guided in a common cable, the shielding device can also act on a plurality of these individual lines, as far as meaningful and feasible. It is emphasized here that, of course, the usual measures for decoupling from the magnet space field or electromagnetic interference in general for magnetic resonance imaging can also be used, for example twisted pair lines and/or coaxial lines as individual lines of a common cable.

The magnetic resonance apparatus usually also has at least one cooling device in order to cool components of the magnetic resonance system, in particular imaging components, which are arranged in the magnet space. For example, the magnetic resonance apparatus can have a main magnet unit, which defines a patient accommodation into which a patient bed can be moved. The main magnet unit can also comprise a, in particular superconducting, main magnet, which generates the basic magnetic field of the magnetic resonance apparatus, so that a corresponding cooling device, in particular helium, can be provided as a coolant. The magnetic resonance apparatus, in particular the main magnet unit, can also have gradient coil devices and/or at least one high-frequency coil device as imaging components, as is known in principle. Other magnet space components may also require cooling, such as power electronics and the like, so that in connection therewith also cooling devices can be used which use in particular water as coolant.

In this case, it is expedient if at least one cooling line for a coolant of a cooling device of the magnetic resonance apparatus is guided into the magnet space, which cooling device is designed to cool the magnet space components. In addition to the common cable, it is conceivable in the design of the invention to guide the helium line pair into the magnet space and/or to provide a cooling line for water as coolant, for example.

However, a particularly advantageous embodiment of the invention provides, in particular with regard to water as coolant, that at least one of the at least one cooling circuit is likewise integrated in the common cable. In this case, it can be provided, in particular, that at least one heat-dissipating line, in particular a power supply line, of the common cable is cooled by an adjacently arranged cooling line, in particular a return line. If, for example, water as coolant is guided in the cooling line of the common cable, the output line of the coolant is guided at a distance from the other lines of the common cable that generate heat in order to maintain the desired coolant temperature at the magnet space components, in order to avoid a temperature increase, wherein it is expedient and conceivable, however, if the temperature of the return line of the coolant is of lesser importance, to use the residual cooling of the coolant for cooling down the heated lines of the common cable, in particular for cooling down the power supply line. A particularly synergistic utilization of the common use of the cooling circuit and the power supply circuit is thus formed.

In a particularly advantageous embodiment of the magnetic resonance system according to the invention, however, such cooling lines can be omitted to a large extent externally, for example in the case that the magnet space components can be cooled by air in addition to the superconducting main magnet, and the helium cooling circuit for the main magnet is implemented completely within the magnet space, for example by providing a compressor in the magnet space itself. On the other hand, it has already been proposed in the prior art to dispense with the main magnet of the quench line, so that such a connection to the outside of the magnet space can preferably also be dispensed with, so that in particular only one common cable, which contains the communication line and the power supply line, has to be led out of the magnet space.

A specific embodiment of the invention provides that the communication line arranged centrally, in particular surrounded by the total shielding as a shielding, is surrounded by a communication line which in particular carries a direct current and/or a low-frequency alternating current. If the power supply line carries only a slowly changing current, it can be used to provide shielding for the more sensitive communication lines (which are preferably guided centrally in a common cable) or a common shielding layer can be used for the communication lines in order to avoid interaction with the magnetic field of the magnet space for magnetic resonance imaging, in particular, as well. In this connection, it is expedient for at least one power supply line, which carries direct current and/or low-frequency alternating current and is designed in particular as a hollow conductor, to be used as the total shielding. Preferably, the power supply line suitable for shielding can be designed as a hollow conductor and thus form a space which is substantially field-free and which can be utilized by the communication line in the center of the common cable.

It is also advantageous if at least a part of the communication line is designed as an optical communication line. For this purpose, an optical coupler can be provided on the side of the magnet space component and/or on a component outside the magnet space, for example on the side of the distribution device. Optical signal transmission has proven to be particularly low in interference. A combination of galvanic and optical communication lines is also possible.

A suitable development provides that at least one communication line is used by at least two magnet space components, in particular by multiplexing and/or modulation and/or signal superposition. In this way, the number of required communication lines can be reduced, which reduces the complexity of the common cable.

As already mentioned, it may be expedient for the magnetic resonance apparatus to have a cooling device using helium as coolant, the compressor of which is arranged inside the magnet space, so that the entire helium circuit is arranged inside the magnet space and the helium feed line outside the magnet space can be dispensed with. Furthermore, a main magnet is preferably used which does not require a quench line, but which can likewise be guided out of the magnet space accordingly if a quench line is required.

Finally, it should also be noted that the solution described here can also be used advantageously in other medical devices, in order to reduce the effort in terms of installation, in particular in terms of wiring. For example, the present invention can be applied to other image forming apparatuses and thus can also be used when applying other image forming methods. Although the technical requirements, in particular with regard to the variety of the line types, are generally low in other imaging methods, a single-cable solution, in particular with a single plug wiring, between the larger individual components of the medical device, in particular of the imaging device, is still very advantageous. Examples of this are the connection of an electronics cabinet to a computer tomograph and the like.

In addition, it is also expedient in the context of the invention to provide a filter device, for example a filter plate, which is known in principle, in the transition to the magnet space. Such a filter device comprises, for example, a filter which attenuates external interference signals, so that interference-free (or at least interference-reduced) operation of the magnetic resonance apparatus is achieved. Corresponding connections can of course be provided on both sides of such a filter device, in particular a filter plate, preferably again by using a single plug, if not the filter device itself as an integrated part of a cable cooperating with a counterpart.

Drawings

Further advantages and details of the invention emerge from the embodiments described below and from the figures. In the drawings:

fig. 1 shows a schematic diagram of a magnetic resonance system according to the invention;

figure 2 shows a cross-section cut through the cable of the first embodiment; and is

Fig. 3 shows a cross section cut through the cable of the second embodiment.

Detailed Description

Fig. 1 shows a schematic diagram of a magnetic resonance system 1 according to the invention. The magnetic resonance apparatus 1 has various components, which are arranged in various spaces, including a magnet space 2, which is in particular shielded from the outside, an operating space 3 (technical space), and an operating space 4, in which an operating device 6, which is designed here as an operating console 5, is arranged. The working space 3 and the working space 4 may also be formed by a common space, for example the working space 4.

In the magnet space 2 there is a magnetic resonance device 7, which, as is known in principle, contains a main magnet unit 8, which defines a cylindrical patient accommodation 9. The patient bed 10 can be moved into the patient receiving space 9. Surrounding the patient receiving space 9 are a high-frequency coil arrangement 11 and a gradient coil arrangement 12 as imaging components. The basic magnetic field is generated by a superconducting main magnet 13. The magnetic resonance apparatus 7 may of course also comprise further magnetic resonance system components, such as shielding and the like.

For cooling the main magnet 13, a cooling device 14 using helium as coolant is also arranged in the magnet space, and since a compressor 15 is arranged in the magnet space 2, the helium circuit of the cooling device extends completely inside the magnet space 2, so that no helium feed line is required. Furthermore, the main magnet 13 is designed such that no quench line is required, and therefore no quench line is present.

In addition to these magnet space components, further magnet space components 16 can also be present inside the magnet space 2, for example at least some components of at least one control device and/or monitoring device. In particular, it is also conceivable to arrange power electronics, for example, power amplifiers, inside the magnet space 2, for example, in the respective structural unit 17.

For operating the magnetic resonance system 1 and for image-wise measurement by means of the magnetic resonance device 7, the magnet space components arranged in the magnet space 2 need to communicate to the outside on the one hand and to obtain corresponding electrical power for their operation or for outputting corresponding pulses (high-frequency signals and gradient currents) of the magnetic resonance sequence on the other hand. For this purpose, communication lines and power supply lines are required, which are routed via a single cable 18, which is connected to a corresponding plug-in point 20 by means of a single plug 19 inside the magnet space 2 and is connected outside the magnet space 2 in the operating space 3 via a single plug 21 to a distributor 22. The distribution device 22 can be arranged in an electronics cabinet of the operating space 3. The filter device 35 at the transition to the magnet space 2 filters out interfering signals. In the filter device 35 designed as a filter plate, the respectively necessary connectivity can also be established via a common plug.

By means of the distribution device 22, it is already possible to distribute the communication and the power supply accordingly at the time of installation by partially pre-wiring. For example, at least one communication line 23 may lead to the operator console 5 and at least another communication line 24 may lead to the network 34, e.g. the internet.

The power supply is ensured here by the internal components of the distribution device 22 or at least the connected components, since the mains ac voltage is fed via a corresponding power supply line 25 to the distribution device 22, in particular to a power supply unit 26, which may have corresponding switching power supply components and/or transformers and/or other power electronics components, in order to provide a corresponding input voltage for the magnet space components and the power electronics 27. The power electronics 27 in this case comprise a high-frequency power amplifier (RFPA) and a Gradient Power Amplifier (GPA), the gradient currents or high-frequency signals generated by which are then conducted further via the respective power supply lines of the cable 18 to the respective magnet space components, in this case, in particular, the high-frequency coil arrangement 11 and the gradient coil arrangement 12, for example. As already explained, in other embodiments, a power amplifier (amplifier device) can also be arranged inside the magnet space 2.

Also shown in fig. 1 is an optional further cooling device 28, which uses water as a coolant. If an optional cooling device 28 is provided, its cooling circuit for guiding the coolant can likewise be realized inside the cable 18.

Fig. 2 shows a corresponding first embodiment of the cable 18. Fig. 2 first shows a different communication line 29, which may be at least partially optical. In the case of a current-type communication line, a shielding device 30 provided for all communication lines 29 may be used. Also shown on the right side of fig. 2 is a power supply line 31, which may also be provided with corresponding shielding means 30, which are not shown for the sake of clarity. The power supply lines 31 comprise, for example, power supply lines for gradient currents, for high-frequency signals and other input voltages of the magnet space components.

It should also be mentioned with regard to the communication line 29 that at least a part of the communication line 29 can also be utilized by a plurality of magnet space components, for example by modulation, superposition and/or multiplexing.

Here, too, cooling

lines

32, 33 are guided within cable 18, cooling line 32 being the outlet line for water and cooling line 33 being the return line for water. The communication line 29, which discharges only little heat, is adjacent to the cooling line 32 and thus does not or does not significantly influence the temperature of the water in the cooling line 32. The power supply line 31, which discharges heat at least partially, is arranged adjacent to the return line 33, so that the returned water can have a cooling effect on the power supply line 31.

Fig. 3 shows a second embodiment of the cable 18, in which case no cooling

lines

32, 33 are guided through the cable. The communication line 29 is arranged centrally and is surrounded by two power supply lines 31, which are designed as hollow conductors and which carry direct or low-frequency current and thus serve as shielding for the communication line 29. Of course, other power supply lines 31, which are designed in a conventional manner, can also be provided and correspondingly displayed.

Other designs of the cable or arrangements of the communication line 29 and the power supply line 31 that differ from this are also conceivable within the scope of the invention.

Although the invention has been illustrated and described in detail in the detail with the preferred embodiments, the invention is not limited by the disclosed embodiments and other variants can be derived therefrom by the person skilled in the art without departing from the scope of protection of the invention.

Claims

1. A magnetic resonance apparatus (1) having:

a magnetic resonance apparatus (7) arranged in a magnet space (2), the magnetic resonance apparatus having a plurality of magnet space components for receiving magnetic resonance data of an examination object,

-a plurality of communication lines (29) connecting the magnet space components with components of the apparatus arranged outside the magnet space (2) or components outside the apparatus, and

a plurality of power supply lines (31) connecting the magnet space components with an electric power supply,

characterized in that all communication lines (29) and all power supply lines (31) are led out of the magnet space (2) in a common cable (18).

2. The magnetic resonance apparatus (1) as claimed in claim 1, characterized in that the common cable (18) is closed at least inside the magnet space (2) by a single, common plug (19), wherein the magnetic resonance device (7) has a plug-in position (20) corresponding to the plug (19, 21).

3. A magnetic resonance apparatus (1) as claimed in claim 2, characterized in that for the cables (18) which end outside the magnet space (2) in a single, common plug (21), the magnetic resonance apparatus (1) has a distributor device (22) for distributing the individual lines (29, 31) to the respective connections.

4. A magnetic resonance apparatus (1) as claimed in claim 3, characterized in that the distribution device (22) has a plurality of pre-plugged connections for the lines (29, 31) of the common cable (18) and/or a power supply unit (26) for supplying the input voltage required by at least a part of the magnet space components from the mains ac voltage.

5. A magnetic resonance apparatus (1) as claimed in claim 4, characterized in that the distribution means (22) and/or the power electronics (27) connected to the distribution means (22) have at least one amplification means for supplying high-frequency signals and/or gradient currents.

6. A magnetic resonance apparatus (1) as claimed in claim 1, characterized in that the common cable (18) has at least one shielding device (30) which acts on a plurality of lines (29, 31) of the common cable (18) and which serves to shield the fields generated by the lines (29, 31) from one another and/or from the fields of the magnet space (2) for magnetic resonance imaging.

7. A magnetic resonance apparatus (1) as claimed in claim 1, characterized in that at least one cooling line (32, 33) for a coolant of a cooling device (15, 26) of the magnetic resonance apparatus (1) is guided into the magnet space (2), the cooling device being designed for cooling magnet space components.

8. The magnetic resonance apparatus (1) as claimed in claim 7, characterized in that at least one of the at least one cooling circuit is likewise integrated in the common cable (18).

9. The magnetic resonance apparatus (1) as claimed in claim 8, characterized in that at least one heat-dissipating line (29, 31) of the common cable (18) is cooled by adjacently arranged cooling lines (32, 33).

10. A magnetic resonance apparatus (1) as claimed in claim 9, characterized in that the heat-removing line (29, 31) is a power supply line (31).

11. A magnetic resonance apparatus (1) as claimed in claim 9, characterized in that the cooling circuit (32, 33) is a return circuit (33).

12. A magnetic resonance apparatus (1) as claimed in claim 1, characterized in that the centrally arranged communication line (29) surrounded by the overall shielding as shielding means (30) is surrounded by a communication line (29) carrying direct current and/or alternating current of low frequency.

13. A magnetic resonance apparatus (1) as claimed in claim 12, characterized in that at least one power supply line (31) carrying a direct current and/or an alternating current of low frequency is used as a total shielding.

14. The magnetic resonance apparatus (1) as claimed in claim 13, characterized in that the power supply line (31) is designed as a hollow conductor.

15. A magnetic resonance apparatus (1) as claimed in claim 1, characterized in that at least a part of the communication line (29) is designed as an optical communication line (29).

16. A magnetic resonance apparatus (1) as claimed in claim 1, characterized in that at least one communication line (29) is utilized by at least two magnet space components.

17. A magnetic resonance apparatus (1) as claimed in claim 1, characterized in that at least one communication line (29) is utilized by at least two magnet space components by multiplexing and/or modulation and/or signal superposition.

18. A magnetic resonance apparatus (1) as claimed in claim 1, characterized in that the magnetic resonance apparatus has a cooling device (14) using helium as a coolant, the compressor (15) of which is arranged inside the magnet space (2).

19. A magnetic resonance apparatus (1) as claimed in claim 1, characterized in that a quench line leads out of the magnet space (2).