COMPUTED TOMOGRAPHY DEVICE AND METHOD FOR ENERGY TRANSFER IN A COMPUTED TOMOGRAPHY DEVICE

Description

[0001] During an imaging examination using a computed tomography scanner, a projection data acquisition system rotates around an examination area to acquire projection data from the examination area for different projection directions. For this purpose, the projection data acquisition system is integrated into a rotating gantry section of the computed tomography scanner, which is mounted so that it can rotate relative to a supporting gantry section of the computed tomography scanner.

[0002] To supply electrical power to the projection data acquisition system and other components of the rotating gantry section, electrical power is transferred from the supporting gantry section to the rotating gantry section. A continuous power supply can be achieved, for example, using a slip ring arrangement in which spring-loaded sliding contacts are moved along annular sliding tracks, thereby following a rotational movement of the rotating gantry section relative to the supporting gantry section.

[0003] Another possibility to continuously transmit electrical energy from the supporting gantry part to the rotating gantry part is based on a contactless rotary connection, for example based on inductive, capacitive and / or electromagnetic coupling with at least one ring-shaped conductor arrangement.

[0004] Ring-shaped sliding tracks and / or coupling conductors can limit the flexibility with which space is available for other components in the computed tomography device, especially on the rotor. Wear of sliding contacts results in increased maintenance costs. The manufacturing effort for contactless rotary joints is relatively high, particularly with regard to the gap between the rotating gantry part and the supporting gantry part in the area of ​​the contactless rotary joint.

[0005] US 8,218,726 B2 and US 10,342,506 B2 each disclose a computed tomography device with an energy storage device. WO 2014 / 004447 A1 and WO 2011 / 115711 A1 are also cited as prior art.

[0006] The invention aims to provide an alternative to conventional energy transmission solutions for computed tomography devices.

[0007] The invention relates to a computed tomography device, comprising a gantry with a supporting gantry part and a rotor, wherein the rotor has a projection data acquisition system and an energy storage device for supplying energy to the projection data acquisition system and is rotatably mounted relative to the supporting gantry part, wherein the gantry has an energy transmission system which is configured for energy transmission from the supporting gantry part to the energy storage device of the rotor, wherein during the energy transmission from the supporting gantry part to the energy storage device of the rotor, the rotor is at rest relative to the supporting gantry part.

[0008] The gantry of the computed tomography device can, in particular, have a connection for receiving electrical energy. The electrical energy can, for example, be provided by an electrical energy transmission network, in particular by a low-voltage network of a hospital. The connection for receiving the electrical energy can, in particular, be configured for detachable connection to the electrical energy transmission network, for example, by means of a connecting cable.

[0009] In particular, the energy transfer from the supporting gantry part to the rotor's energy storage device can be carried out in such a way that electrical energy is stored in the rotor's energy storage device. The rotor's energy storage device can be configured, in particular, to supply energy to the projection data acquisition system in such a way that the projection data acquisition system can be supplied with electrical energy from the rotor's energy storage device while the rotor rotates relative to the supporting gantry part.

[0010] In particular, it can be provided that, by means of the energy transfer from the supporting gantry part to the energy storage device of the rotor, an electrical energy which is required for acquiring projection data by means of the projection data acquisition system for at least one computed tomographic sectional image is transferred from the supporting gantry part to the energy storage device of the rotor.

[0011] The rotor's energy storage can be based, for example, on a rechargeable battery and / or capacitors, particularly supercapacitors. Supercapacitors are also known as electrochemical capacitors, ultracapacitors, ultracapacitors, and supercapacitors.

[0012] The projection data acquisition system may, for example, comprise an X-ray source and / or an X-ray detector that interacts with the X-ray source and / or be configured to acquire projection data. Acquiring the projection data by means of the projection data acquisition system may, in particular, comprise generating X-rays by means of the X-ray source and detecting the X-rays by means of the X-ray detector.This further discloses a medical imaging device comprising a gantry with a supporting gantry part and a movable gantry part, wherein the movable gantry part has a projection data acquisition system and an energy storage device for supplying energy to the projection data acquisition system and is mounted so as to be movable relative to the supporting gantry part, wherein the gantry has an energy transmission system which is configured for energy transmission from the supporting gantry part to the energy storage device of the movable gantry part, wherein the movable gantry part is at rest relative to the supporting gantry part during the energy transmission from the supporting gantry part to the energy storage device of the movable gantry part.Furthermore, it can be provided that the energy transmission system is further configured for energy transmission from the energy storage device of the movable gantry part to the supporting gantry part, wherein during the energy transmission from the energy storage device of the movable gantry part to the supporting gantry part, the movable gantry part is at rest relative to the supporting gantry part.

[0013] For example, the medical imaging device can be a C-arm X-ray device, wherein the movable gantry part is a C-arm of the C-arm X-ray device. In particular, the medical imaging device can be further developed with suitable features described with respect to the rotor of the gantry of the computed tomography device by replacing the reference to the rotor of the gantry of the computed tomography device with a reference to the movable gantry part of the medical imaging device.

[0014] The computed tomography device can, in particular, be a mobile computed tomography device or a stationary computed tomography device. The computed tomography device can, in particular, be designed as a head computed tomography device for head imaging, for example, as a mobile head computed tomography device.

[0015] The gantry can, in particular, have an opening. The opening can, for example, be designed such that, for an examination using the computed tomography device, an examination subject can be inserted into the opening along a system axis of the gantry. The examination subject can, for example, be a human, an animal, or a phantom. The rotor can, in particular, be mounted so as to be rotatable about a rotation axis relative to the supporting gantry part. The rotation axis can, for example, be the same as the system axis.

[0016] The computed tomography device can thus be operated in such a way that energy is transferred between the rotor and the supporting gantry part only when the rotor is at rest relative to the supporting gantry part, in particular between two operating states of the computed tomography device in which the rotor rotates relative to the supporting gantry part. Continuous energy transfer during rotation of the rotor relative to the supporting gantry part is therefore not necessary. Therefore, ring-shaped sliding tracks and coupling conductors can be dispensed with. Compared to conventional ring-based energy transfer solutions for computed tomography devices, the effort required for manufacturing and maintenance can be reduced, and the installation space in the computed tomography device can be used more flexibly. Furthermore, material costs and the weight of the computed tomography device can be reduced in this way.

[0017] According to the invention, the energy transmission system is further configured for energy transmission from the rotor's energy storage device to the supporting gantry part, wherein the rotor remains stationary relative to the supporting gantry part during the energy transmission from the rotor's energy storage device to the supporting gantry part. For example, the rotor's energy storage device can be used to supply energy to the entire computed tomography device while the rotor remains stationary relative to the supporting gantry part.

[0018] One embodiment provides that the gantry has a chassis which is configured for a travel movement of the gantry relative to a base surface, wherein the energy transfer from the energy storage device of the rotor to the supporting gantry part takes place during the travel movement of the gantry.

[0019] The base surface can, for example, be the floor of an examination room and / or be formed by a floor covering and / or a base. The chassis can, in particular, be configured to move the gantry parallel to the base surface relative to the base surface.

[0020] The chassis can, for example, be wheel-based and / or omnidirectional. The gantry's movement can, in particular, occur while the rotor is stationary relative to the supporting gantry part. The gantry's movement can, for example, occur to move the gantry within an examination room and / or between different examination rooms of a clinic. The gantry's movement can, in particular, occur while the gantry is disconnected from an electrical power transmission network, in particular from a clinic's low-voltage network.

[0021] One embodiment provides that the supporting gantry part has an electric travel drive which interacts with the chassis, wherein the energy transfer from the energy storage of the rotor to the supporting gantry part takes place by means of the energy transfer system from the energy storage of the rotor to the electric travel drive in order to drive the travel movement of the gantry by means of the travel drive.

[0022] If the electrical energy for the gantry's movement is taken from the rotor's energy storage unit, no electrical energy for the gantry's movement needs to be stored on the supporting gantry section. This saves space and costs for an energy storage unit designed to supply power to the landing gear on the supporting gantry section. Redundancies in energy storage capacity can be eliminated if both the landing gear's power supply and the projection data acquisition system's power supply are provided by the rotor's energy storage unit.

[0023] One embodiment provides that the supporting gantry part has an energy storage device, wherein the energy transfer from the supporting gantry part to the energy storage device of the rotor takes place by means of the energy transfer system from the energy storage device of the supporting gantry part to the energy storage device of the rotor and / or wherein the energy transfer from the energy storage device of the rotor to the supporting gantry part takes place by means of the energy transfer system from the energy storage device of the rotor to the energy storage device of the supporting gantry part.

[0024] In particular, it can be provided that the energy transfer from the energy storage device of the supporting gantry part to the energy storage device of the rotor takes place during the travel movement of the gantry. The energy storage device of the supporting gantry part can be used to supply energy to components of the supporting gantry part while the rotor rotates relative to the supporting gantry part and / or while the energy storage device of the rotor is not connected to the supporting gantry part by means of the energy transfer system.

[0025] The chassis can, for example, be configured for a scanning movement of the gantry relative to the object under examination during the acquisition of projection data. In particular, the object under examination can be stationary relative to the base surface. The scanning movement of the gantry can, in particular, occur along the system axis of the gantry. The scanning movement can, for example, be powered by electrical energy from the energy storage device of the supporting gantry section.

[0026] The gantry, in particular the gantry's energy transmission system, can, for example, have a switching device. The switching device can, for example, be configured to distribute electrical energy between the energy storage device of the supporting gantry part and the energy storage device of the rotor. The switching device can, for example, be configured to switch the computed tomography device into various operating states that differ from one another with respect to the flow of electrical energy.

[0027] Furthermore, it can be provided that the supporting gantry part has a data processing system, wherein the energy storage device of the supporting gantry part is configured to supply energy to the data processing system, wherein the energy supply of the data processing system is effected with electrical energy from the energy storage device of the supporting gantry part, in particular while the rotor rotates relative to the supporting gantry part.

[0028] The data processing system can, for example, be configured to control the computed tomography device and / or to process the projection data.

[0029] One embodiment provides that the supporting gantry part has a first connecting element of the energy transmission system, that the rotor has a second connecting element of the energy transmission system, and that the first connecting element and the second connecting element are configured to correspond to one another for establishing an energy transmission connection. In particular, it can be provided that the first connecting element and the second connecting element are aligned to one another for establishing the energy transmission connection when the rotor is in a coupling angular position relative to the supporting gantry part.

[0030] In particular, it can be provided that the gantry has an angular positioning device, wherein the angular positioning device is configured for angular positioning of the rotor in the coupling angular position relative to the supporting gantry part.

[0031] In particular, it can be provided that the energy transfer from the supporting gantry part to the energy storage device of the rotor takes place via the energy transfer connection and / or that the energy transfer from the energy storage device of the rotor to the supporting gantry part takes place via the energy transfer connection. The energy transfer connection can in particular be bidirectional.

[0032] In particular, it can be provided that during the energy transfer from the supporting gantry part to the energy storage of the rotor, the rotor is at rest relative to the supporting gantry part and is in the coupling angular position relative to the supporting gantry part and / or that during the energy transfer from the energy storage of the rotor to the supporting gantry part, the rotor is at rest relative to the supporting gantry part and is in the coupling angular position relative to the supporting gantry part.

[0033] The coupling angular position can, for example, be related to the rotational axis about which the rotor is rotatably mounted relative to the supporting gantry part. The coupling angular position can, for example, be that angular position of the rotor relative to the supporting gantry part in which a distance between the first connecting element and the second connecting element is minimal compared to other angular positions of the rotor relative to the supporting gantry part that are traversed during a rotation of the rotor relative to the supporting gantry part.

[0034] In particular, it can be provided that the gantry has an angular positioning device, wherein the angular positioning device is configured for angular positioning of the rotor in the coupling angular position relative to the supporting gantry part.

[0035] The angular positioning of the rotor can be achieved, for example, by braking a rotational movement of the rotor relative to the supporting gantry part by means of a brake such that the rotational movement of the rotor ends in the coupling angular position relative to the supporting gantry part. The angular positioning device can, for example, have the brake. The angular positioning device can, for example, be configured to drive an angular positioning rotational movement of the rotor relative to the supporting gantry part. The braking of the rotational movement of the rotor, in particular the angular positioning rotational movement of the rotor, and / or the driving of the rotational movement of the rotor, in particular the angular positioning rotational movement of the rotor, can be achieved, for example, with electrical energy from the energy storage device of the rotor and / or with electrical energy from the energy storage device of the supporting gantry part.

[0036] The angular positioning device may, for example, comprise a fixing device configured to fix the rotor relative to the supporting gantry part in the coupling angular position relative to the supporting gantry part.

[0037] The angular positioning device may, for example, comprise a spring-loaded bolt on the supporting gantry part and a hole on the rotor, which are designed and arranged such that the bolt can engage in the hole when the rotor is in the coupling angular position relative to the supporting gantry part, and can thus fix the rotor in the coupling angular position relative to the supporting gantry part.

[0038] One embodiment provides that the energy transmission connection is an electrical plug connection of the first connecting element and the second connecting element to one another.

[0039] One embodiment provides that the energy transmission connection is configured for contactless electrical energy transmission between the first connecting element and the second connecting element, for example for contactless inductive electrical energy transmission between the first connecting element and the second connecting element and / or for contactless capacitive electrical energy transmission between the first connecting element and the second connecting element.

[0040] In particular, it can be provided that the energy transfer from the supporting gantry part to the energy storage of the rotor comprises the contactless electrical energy transfer between the first connecting element and the second connecting element and / or that the energy transfer from the energy storage of the rotor to the supporting gantry part comprises the contactless electrical energy transfer between the first connecting element and the second connecting element.

[0041] The contactless electrical energy transfer between the first connecting element and the second connecting element can be realized in a low-wear manner and / or used for the galvanic separation of the rotor from the supporting gantry part.

[0042] Furthermore, it can be provided that the contactless electrical energy transfer between the first connecting element and the second connecting element can also take place while the rotor rotates relative to the supporting gantry part.

[0043] One embodiment provides that the gantry has a coupling device which is configured to arrange the first connecting element and the second connecting element in a coupling position relative to one another while the rotor is at rest relative to the supporting gantry part, in particular while the rotor is at rest in the coupling angular position relative to the supporting gantry part, and to arrange the first connecting element and the second connecting element in a decoupling position relative to one another while the rotor is at rest relative to the supporting gantry part, in particular while the rotor is at rest in the coupling angular position relative to the supporting gantry part.

[0044] In particular, it can be provided that the energy transmission connection is established by coupling the first connecting element and the second connecting element to one another when the rotor is in the coupling angular position relative to the supporting gantry part and when the first connecting element and the second connecting element are arranged in the coupling position relative to one another. The coupling of the first connecting element and the second connecting element to one another can, for example, be inductive and / or capacitive or be based on an electrical contact, for example a spring-loaded and / or plug-in electrical contact, between the first connecting element and the second connecting element.

[0045] In particular, it can be provided that the energy transmission connection is interrupted by a decoupling of the first connecting element and the second connecting element from one another when the first connecting element and the second connecting element are arranged in the decoupling position relative to one another.

[0046] The coupling can be electrical and / or mechanical, for example. The decoupling can be electrical and / or mechanical, for example. The decoupling of the first connecting element and the second connecting element from one another can be achieved, for example, by opening and / or enlarging a gap between the first connecting element and the second connecting element. By opening and / or enlarging the gap, rotation of the rotor relative to the supporting gantry part can be enabled, for example, without the rotation of the rotor being prevented and / or disrupted by the coupling of the first connecting element and the second connecting element to one another.

[0047] If the energy transmission connection is an electrical plug connection of the first connecting element and the second connecting element, the decoupling of the first connecting element and the second connecting element from each other can be achieved by releasing the plug connection.

[0048] The arrangement of the first connecting element and the second connecting element in the coupling position relative to one another and / or the arrangement of the first connecting element and the second connecting element in the decoupling position relative to one another can be carried out, for example, with electrical energy from the energy storage device of the rotor and / or with electrical energy from the energy storage device of the supporting gantry part.

[0049] The invention further relates to a method for energy transmission in a computed tomography device, wherein the computed tomography device has a gantry with a supporting gantry part, a rotor and an energy transmission system, wherein the rotor has the projection data acquisition system and an energy storage device and is rotatably mounted relative to the supporting gantry part, the method comprising: bringing about a rest state of the rotor relative to the supporting gantry part such that the rotor is at rest relative to the supporting gantry part, carrying out an energy transfer from the supporting gantry part to the energy storage of the rotor by means of the energy transfer system while the rotor is at rest relative to the supporting gantry part, rotating the rotor relative to the supporting gantry part, supplying the projection data acquisition system with electrical energy from the energy storage of the rotor while the rotor is rotating relative to the supporting gantry part, characterized in that an energy transfer from the energy storage of the rotor to the supporting gantry part is carried out by means of the energy transfer system while the rotor is at rest relative to the supporting gantry part.

[0050] In particular, the energy transfer from the supporting gantry part to the energy storage of the rotor can be carried out in such a way that electrical energy is stored in the energy storage of the rotor.

[0051] One embodiment provides that a travel movement of the gantry relative to a base surface is carried out by means of a chassis, wherein the energy transfer from the energy storage of the rotor to the supporting gantry part is carried out during the travel movement of the gantry.

[0052] One embodiment provides that, by transferring energy from the rotor's energy storage device to the supporting gantry part by means of the energy transmission system, electrical energy for an electric travel drive, which interacts with the chassis, is transferred from the rotor's energy storage device to the supporting gantry part. In particular, the travel movement of the gantry can be driven by the electric travel drive based on the electrical energy for the electric travel drive.

[0053] One embodiment provides that the supporting gantry part has an energy storage device, wherein the energy transfer from the supporting gantry part to the energy storage device of the rotor is carried out by means of the energy transfer system from the energy storage device of the supporting gantry part to the energy storage device of the rotor and / or wherein the energy transfer from the energy storage device of the rotor to the supporting gantry part is carried out by means of the energy transfer system from the energy storage device of the rotor to the energy storage device of the supporting gantry part.

[0054] One embodiment provides that the supporting gantry part has a first connecting element of the energy transmission system, wherein the rotor has a second connecting element of the energy transmission system, wherein the first connecting element and the second connecting element are configured to correspond to one another for establishing an energy transmission connection. In particular, the rotor can be angularly positioned in a coupling angular position relative to the supporting gantry part, in particular by means of an angular positioning device, such that the first connecting element and the second connecting element are aligned to one another for establishing the energy transmission connection.

[0055] One embodiment provides that the energy transmission connection is established by coupling the first connecting element and the second connecting element to one another, for example by arranging the first connecting element and the second connecting element in a coupling position relative to one another, in particular by means of a coupling device in the coupling position relative to one another, while the rotor is at rest relative to the supporting gantry part and is in the coupling angular position relative to the supporting gantry part.

[0056] In particular, it can be provided that the energy transmission connection is interrupted by decoupling the first connecting element and the second connecting element from one another, for example by arranging the first connecting element and the second connecting element in a decoupling position relative to one another, in particular by means of the coupling device in the decoupling position relative to one another, while the rotor is at rest relative to the supporting gantry part and is in the coupling angular position relative to the supporting gantry part.

[0057] Within the scope of the invention, features described with reference to different embodiments of the invention and / or different claim categories (method, use, device, system, arrangement, etc.) can be combined to form further embodiments of the invention. For example, a claim relating to a device can also be further developed with features described or claimed in connection with a method, and vice versa. Functional features of a method can be implemented by appropriately designed physical components. The use of the indefinite articles "a" or "an" does not exclude the possibility that the feature in question may be present multiple times.

[0058] The invention is explained below using exemplary embodiments with reference to the accompanying figures. The representation in the figures is schematic, highly simplified, and not necessarily to scale. The Fig. 1 shows an energy flow diagram for a first operating state of the computed tomography device. Fig. 2 shows an energy flow diagram for a second operating state of the computed tomography device. Fig. 3 shows an energy flow diagram for a third operating state of the computed tomography device. Fig. 4 shows an energy flow diagram for a fourth operating state of the computed tomography device. Fig. 5 shows an energy flow diagram for a fifth operating state of the computed tomography device. Fig. 6 shows an energy flow diagram for an operating state of a computed tomography device according to another example. Fig. 7 shows an energy flow diagram for an operating state of a computed tomography device according to another example. Fig. 8 shows an example of a computer tomography device. The Fig. 9 shows a flowchart of a method for energy transfer in a computed tomography device.

[0059] The Fig. 1 shows an energy flow diagram for a first operating state of the computed tomography device 1. The computed tomography device 1 has a gantry 20 with a supporting gantry part T and a rotor 24, wherein the rotor 24 has a projection data acquisition system 27 and an energy storage device ER for supplying energy to the projection data acquisition system 27 and is rotatably mounted relative to the supporting gantry part T, wherein the gantry 20 has an energy transmission system C which is set up for energy transmission from the supporting gantry part T to the energy storage device ER of the rotor 24, wherein during the energy transmission from the supporting gantry part T to the energy storage device ER of the rotor 24, the rotor 24 is at rest relative to the supporting gantry part T.

[0060] In the first operating state of the computed tomography device 1, the rotor 24 is at rest relative to the supporting gantry part T, wherein the energy transmission connection of the energy transmission system C is established between the energy storage ER of the rotor 24 and the supporting gantry part T.

[0061] The gantry 20 of the computed tomography device 1 has a connection A for receiving electrical energy. The electrical energy is provided by an electrical energy transmission network EL, for example, a low-voltage network of a hospital. In the first operating state of the computed tomography device 1, the connection A is detachably connected to the electrical energy transmission network EL by means of a connecting cable.

[0062] The supporting gantry part T has an energy storage device ET, wherein the energy is transferred from the supporting gantry part T to the energy storage device ER of the rotor 24 by means of the energy transfer system C from the energy storage device ET of the supporting gantry part T to the energy storage device ER of the rotor 24 and / or wherein the energy is transferred from the energy storage device ER of the rotor 24 to the supporting gantry part T by means of the energy transfer system C from the energy storage device ER of the rotor 24 to the energy storage device ET of the supporting gantry part T.

[0063] The supporting gantry part T has a data processing system D, wherein the energy storage ET of the supporting gantry part T is configured to supply energy to the data processing system D, wherein the energy supply to the data processing system D is provided with electrical energy from the energy storage ET of the supporting gantry part T, in particular while the rotor 24 rotates relative to the supporting gantry part T.

[0064] The energy transmission system C has the switching device B. The electrical energy received from the electrical energy transmission network EL is distributed by means of the switching device B to the energy storage device ET of the supporting gantry part T and the energy storage device ER of the rotor 24. In the first operating state of the computed tomography device 1, electrical energy is thus stored both in the energy storage device ET of the supporting gantry part T and in the energy storage device ER of the rotor 24.

[0065] The supporting gantry part T has a first connecting element C1 of the energy transmission system C. The rotor 24 has a second connecting element C2 of the energy transmission system C. The first connecting element C1 and the second connecting element C2 are configured to correspond to one another for establishing an energy transmission connection. The first connecting element C1 and the second connecting element C2 are aligned to one another for establishing the energy transmission connection when the rotor 24 is in a coupling angular position relative to the supporting gantry part T.

[0066] The gantry 20 has the angular positioning device G, wherein the angular positioning device G is configured for angular positioning of the rotor 24 in the coupling angular position relative to the supporting gantry part T.

[0067] The energy transmission connection can, for example, be an electrical plug connection between the first connecting element C1 and the second connecting element C2. Alternatively, the energy transmission connection can, for example, be configured for contactless electrical energy transmission between the first connecting element C1 and the second connecting element C2.

[0068] The gantry 20 has a coupling device C12 which is configured to arrange the first connecting element C1 and the second connecting element C2 in a coupling position relative to each other while the rotor 24 is at rest relative to the supporting gantry part T, and to arrange the first connecting element C1 and the second connecting element C2 in a decoupling position relative to each other while the rotor 24 is at rest relative to the supporting gantry part T.

[0069] The energy transmission connection is established by coupling the first connecting element C1 and the second connecting element C2 to each other when the rotor 24 is in the coupling angular position relative to the supporting gantry part T and when the first connecting element C1 and the second connecting element C2 are arranged in the coupling position relative to each other.

[0070] The energy transmission connection is interrupted by a decoupling of the first connecting element C1 and the second connecting element C2 from each other when the first connecting element C1 and the second connecting element C2 are arranged in the decoupling position relative to each other.

[0071] In the first operating state of the computed tomography device 1, the energy transmission connection is established by coupling the first connecting element C1 and the second connecting element C2 to one another. The first connecting element C1 and the second connecting element C2 are arranged in a coupling position relative to one another by means of the coupling device C12. The rotor 24 rests relative to the supporting gantry part T and is located in the coupling angular position relative to the supporting gantry part T.

[0072] The Fig. 2 shows an energy flow diagram for a second operating state of the computed tomography device 1. In the second operating state of the computed tomography device 1, the rotor 24 rotates relative to the supporting gantry part T, wherein the energy transmission connection of the energy transmission system C is interrupted between the energy storage ER of the rotor 24 and the supporting gantry part T. In the second operating state of the computed tomography device 1, the connection A is not connected to the electrical energy transmission network EL.

[0073] Projection data is acquired by means of the projection data acquisition system 27, wherein the projection data acquisition system 27 is supplied with electrical energy from the energy storage device ER of the rotor 24. The gantry 20 has the rotary drive 26 for driving the rotary movement of the rotor 24 relative to the supporting gantry part T about the rotation axis SA, wherein the rotary drive 26 is supplied with electrical energy from the energy storage device ET of the supporting gantry part T.

[0074] During the transition from the first operating state of the computed tomography device 1 to the second operating state of the computed tomography device 1, the energy transmission connection is interrupted by decoupling the first connecting element C1 and the second connecting element C2 from one another, in that the first connecting element C1 and the second connecting element C2 are arranged in a decoupling position relative to one another by means of the coupling device C12, while the rotor 24 is at rest relative to the supporting gantry part T and is in the coupling angular position relative to the supporting gantry part T.

[0075] The Fig. 3 shows an energy flow diagram for a third operating state of the computed tomography device 1. In the third operating state of the computed tomography device 1, the rotor 24 is at rest relative to the supporting gantry part T, wherein the energy transmission connection of the energy transmission system C is established between the energy storage ER of the rotor 24 and the supporting gantry part T. In the second operating state of the computed tomography device 1, the connection A is not connected to the electrical energy transmission network EL.

[0076] For example, in this way, after one or more acquisitions of projection data, which were carried out in the second operating state of the computed tomography device 1, the energy storage ER of the rotor 24 can be charged with electrical energy from the energy storage ET of the supporting gantry part T.

[0077] During the transition from the second operating state of the computed tomography device 1 to the third operating state of the computed tomography device 1, the rotor 24 is angularly positioned in the coupling angular position relative to the supporting gantry part T by means of the angular positioning device G such that the first connecting element C1 and the second connecting element C2 are correspondingly aligned with one another for establishing the energy transmission connection.

[0078] During the transition from the second operating state of the computed tomography device 1 to the third operating state of the computed tomography device 1, the energy transmission connection is established by coupling the first connecting element C1 and the second connecting element C2 to one another, in that the first connecting element C1 and the second connecting element C2 are arranged in the coupling position relative to one another by means of the coupling device C12, while the rotor 24 is at rest relative to the supporting gantry part T and is in the coupling angular position relative to the supporting gantry part T.

[0079] The Fig. 4 shows an energy flow diagram for a fourth operating state of the computed tomography device 1. In the third operating state of the computed tomography device 1, the rotor 24 is at rest relative to the supporting gantry part T, wherein the energy transmission connection of the energy transmission system C is established between the energy storage device ER of the rotor 24 and the supporting gantry part T. In the second operating state of the computed tomography device 1, the connection A is not connected to the electrical energy transmission network EL. The energy transmission system C is set up for energy transmission from the energy storage device ER of the rotor 24 to the supporting gantry part T, wherein during the energy transmission from the energy storage device ER of the rotor 24 to the supporting gantry part T, the rotor 24 is at rest relative to the supporting gantry part T.

[0080] The Fig. 5 shows an energy flow diagram for a fifth operating state of the computed tomography device 1. In the fifth operating state of the computed tomography device 1, the rotor 24 rotates relative to the supporting gantry part T, wherein the energy transmission connection of the energy transmission system C is interrupted between the energy storage ER of the rotor 24 and the supporting gantry part T. In the second operating state of the computed tomography device 1, the connection A is not connected to the electrical energy transmission network EL.

[0081] Projection data is acquired by means of the projection data acquisition system 27, wherein the projection data acquisition system 27 is supplied with electrical energy from the energy storage device ER of the rotor 24. The gantry 20 has the rotary drive 26 for driving the rotary movement of the rotor 24 relative to the supporting gantry part T about the rotation axis SA, wherein the rotary drive 26 is supplied with electrical energy from the energy storage device ET of the supporting gantry part T.

[0082] The gantry 20 has the chassis FW, which is configured for a scanning movement of the gantry 20 relative to the base area U. The supporting gantry part T has an electric drive FA that interacts with the chassis FW. In the fifth operating state of the computed tomography device 1, the scanning movement of the gantry 20 relative to the base area U is driven by the drive FA based on electrical energy from the energy storage device ET of the supporting gantry part T while the projection data is being acquired.

[0083] The Fig. 6 shows an energy flow diagram for an operating state of a computed tomography device 1 according to another example. In this operating state of the computed tomography device 1, the rotor 24 is at rest relative to the supporting gantry part T, wherein the energy transmission connection of the energy transmission system C is established between the energy storage device ER of the rotor 24 and the supporting gantry part T, and the connection A is not connected to the electrical energy transmission network EL.

[0084] The gantry 20 has the chassis FW, which is configured for a travel movement of the gantry 20 relative to the base U. The supporting gantry part T has an electric travel drive FA, which interacts with the chassis FW. In the operating state of the computed tomography device 1 according to Fig. 6 A travel movement of the gantry 20 relative to the base area U is carried out by means of the chassis FW. The energy is transferred from the energy storage ER of the rotor 24 to the supporting gantry part T during the travel movement of the gantry 20. The energy is transferred from the energy storage ER of the rotor 24 to the supporting gantry part T by means of the energy transfer system C from the energy storage ER of the rotor 24 to the electric travel drive FA in order to drive the travel movement of the gantry 20 by means of the travel drive FA.

[0085] By transferring energy from the energy storage ER of the rotor 24 to the supporting gantry part T by means of the energy transmission system C, electrical energy for the electric travel drive FA is transferred from the energy storage ER of the rotor 24 to the supporting gantry part T, which interacts with the chassis FW, wherein the travel movement of the gantry 20 is driven by means of the electric travel drive FA based on the electrical energy for the electric travel drive FA.

[0086] The Fig. 7 shows an energy flow diagram for an operating state of a computed tomography device 1 according to another example. In this operating state of the computed tomography device 1, the rotor 24 rotates relative to the supporting gantry part T, wherein the energy transmission connection of the energy transmission system C between the energy storage ER of the rotor 24 and the supporting gantry part T is interrupted, and the connection A is not connected to the electrical energy transmission network EL.

[0087] Projection data is acquired by means of the projection data acquisition system 27, wherein the projection data acquisition system 27 is supplied with electrical energy from the energy storage ER of the rotor 24. The gantry 20 has the rotary drive 26 for driving the rotary movement of the rotor 24 relative to the supporting gantry part T about the rotation axis SA, wherein the rotary drive 26 is supplied with electrical energy from the energy storage ER of the rotor 24.

[0088] The Fig. 8 shows an example of a computed tomography device 1 with the gantry 20. The gantry 20 has a first gantry part 21 and a second gantry part 22, wherein the first gantry part 21 has the rotatably mounted rotor 24 with the projection data acquisition system 27, wherein the second gantry part 22 has at least a portion of the opening 9. The first gantry part 21 has the rotary bearing 25 and a support structure 26, wherein the rotor 24 is connected to the support structure 26 by means of the rotary bearing 25 and is rotatably mounted relative to the support structure 26 about the axis of rotation SA, wherein the axis of rotation SA is a system axis of the gantry 20.The first gantry part 21 is mounted so as to be movable relative to the second gantry part 22 such that a translational movement of the first gantry part 21 relative to the second gantry part 22 along the system axis of the gantry 20 can be carried out, while at the same time the second gantry part 22 is at rest relative to the head shell 19 and relative to the at least one section of the opening 9.

[0089] The supporting gantry part T can, for example, have the second gantry part 22 and the support structure 26 of the first gantry part 21. The translational movement of the first gantry part 21 relative to the second gantry part 22 can, for example, be driven with electrical energy from the energy storage ET of the supporting gantry part T when the rotor 24 rotates relative to the supporting gantry part T. The translational movement of the first gantry part 21 relative to the second gantry part 22 can, for example, be driven with electrical energy from the energy storage ER of the rotor 24 when the rotor 24 is at rest relative to the supporting gantry part T.

[0090] The Fig. 8 The computed tomography device 1 shown is a mobile head computed tomography device. The gantry 20 has the head shell 19 and the body support device 7. A person's head can rest on the head shell 19, while the person's head is located in the opening 9 for head imaging. The body support device 7 can be used to support a shoulder region of the person, while the person's head is located in the opening 9 for head imaging and rests on the head shell 19. The gantry 20 further has a panel V for separating an interior region of the gantry 20 from an environment L of the gantry 20. The computed tomography device 1 further has an operating system with a touch-sensitive screen 8, which is arranged on the gantry 20.

[0091] The Fig. 9shows a flowchart of a method for energy transmission in a computed tomography device 1, wherein the computed tomography device 1 has a gantry 20 with a supporting gantry part T, a rotor 24 and an energy transmission system C, wherein the rotor 24 has the projection data acquisition system 27 and an energy storage ER and is rotatably mounted relative to the supporting gantry part T, the method comprising: bringing about V1 a rest state of the rotor 24 relative to the supporting gantry part T such that the rotor 24 is at rest relative to the supporting gantry part T, carrying out V2 an energy transfer from the supporting gantry part T to the energy storage ER of the rotor 24 by means of the energy transfer system C while the rotor 24 is at rest relative to the supporting gantry part T, rotating V3 the rotor 24 relative to the supporting gantry part T, supplying V4 the projection data acquisition system 27 with electrical energy from the energy storage ER of the rotor 24 during the rotation V3 of the rotor 24 relative to the supporting gantry part T.

Claims

1. Computed tomography device (1), having a gantry (20) with a supporting gantry part (T) and a rotor (24), - wherein the rotor (24) has a projection data acquisition system (27) and an energy store (ER) for supplying energy to the projection data acquisition system (27) and is rotatably mounted relative to the supporting gantry part (T), - wherein the gantry (20) has an energy transmission system (C) which is configured for energy transmission from the supporting gantry part (T) to the energy store (ER) of the rotor (24), wherein during the energy transmission from the supporting gantry part (T) to the energy store (ER) of the rotor (24), the rotor (24) is at rest relative to the supporting gantry part (T), - characterised in that the energy transmission system (C) is further configured for energy transmission from the energy store (ER) of the rotor (24) to the supporting gantry part (T), wherein during the energy transmission from the energy store (ER) of the rotor (24) to the supporting gantry part (T), the rotor (24) is at rest relative to the supporting gantry part (T).

2. Computed tomography device (1) according to claim 1, - wherein the gantry (20) has a chassis (FW) which is configured for a travel movement of the gantry (20) relative to a base area (U), - wherein the energy transmission from the energy store (ER) of the rotor (24) to the supporting gantry part (T) takes place during the travel movement of the gantry (20).

3. Computed tomography device (1) according to claim 2, - wherein the supporting gantry part (T) has an electric travel drive (FA) which interacts with the chassis (FW), - wherein the energy transmission from the energy store (ER) of the rotor (24) to the supporting gantry part (T) takes place by means of the energy transmission system (C) from the energy store (ER) of the rotor (24) to the electric travel drive (FA) in order to drive the travel movement of the gantry (20) by means of the travel drive (FA).

4. Computed tomography device (1) according to one of claims 1 to 3, - wherein the supporting gantry part (T) has an energy store (ET), - wherein the energy transmission from the supporting gantry part (T) to the energy store (ER) of the rotor (24) takes place by means of the energy transmission system (C) from the energy store (ET) of the supporting gantry part (T) to the energy store (ER) of the rotor (24) and / or wherein the energy transmission from the energy store (ER) of the rotor (24) to the supporting gantry part (T) takes place by means of the energy transmission system (C) from the energy store (ER) of the rotor (24) to the energy store (ET) of the supporting gantry part (T).

5. Computed tomography device (1) according to one of claims 1 to 4, - wherein the supporting gantry part (T) has a first connecting element (C1) of the energy transmission system (C), - wherein the rotor (24) has a second connecting element (C2) of the energy transmission system (C), - wherein the first connecting element (C1) and the second connecting element (C2) are aligned correspondingly to one another for establishing an energy transmission connection, - wherein the first connecting element (C1) and the second connecting element (C2) are aligned correspondingly to one another for establishing the energy transmission connection when the rotor (24) is in a coupling angular position relative to the supporting gantry part (T).

6. Computed tomography device (1) according to claim 5, - wherein the energy transmission connection is an electrical plug connection of the first connecting element (C1) and of the second connecting element (C2) to one another.

7. Computed tomography device (1) according to claim 5, - wherein the energy transmission connection is configured for contactless electrical energy transmission between the first connecting element (C1) and the second connecting element (C2).

8. Computed tomography device (1) according to one of claims 5 to 7, - wherein the gantry (20) has a coupling apparatus (C12) which is configured to arrange the first connecting element (C1) and the second connecting element (C2) in a coupling position relative to one another, while the rotor (24) is at rest relative to the supporting gantry part (T), and to arrange the first connecting element (C1) and the second connecting element (C2) in a decoupling position relative to one another while the rotor (24) is at rest relative to the supporting gantry part (T), - wherein the energy transmission connection is established by coupling the first connecting element (C1) and the second connecting element (C2) to one another when the rotor (24) is in the coupling angular position relative to the supporting gantry part (T) and when the first connecting element (C1) and the second connecting element (C2) are arranged in the coupling position relative to one another, - wherein the energy transmission connection is interrupted by decoupling the first connecting element (C1) and the second connecting element (C2) from one another when the first connecting element (C1) and the second connecting element (C2) are arranged in the decoupling position relative to one another.

9. Method for energy transmission in a computed tomography device (1), wherein the computed tomography device (1) has a gantry (20) with a supporting gantry part (T), a rotor (24) and an energy transmission system (C), wherein the rotor (24) has the projection data acquisition system (27) and an energy store (ER) and is rotatably mounted relative to the supporting gantry part (T), the method comprising: - causing (V1) an idle state of the rotor (24) relative to the supporting gantry part (T) in such a way that the rotor (24) is at rest relative to the supporting gantry part (T), - carrying out (V2) energy transmission from the supporting gantry part (T) to the energy store (ER) of the rotor (24) by means of the energy transmission system (C) while the rotor (24) is at rest relative to the supporting gantry part (T), - rotating (V3) the rotor (24) relative to the supporting gantry part (T), - supplying (V4) the projection data acquisition system (27) with electrical energy from the energy store (ER) of the rotor (24) during rotation (V3) of the rotor (24) relative to the supporting gantry part (T), - characterised in that energy transmission from the energy store (ER) of the rotor (24) to the supporting gantry part (T) is performed by means of the energy transmission system (C) while the rotor (24) is at rest relative to the supporting gantry part (T).

10. Method according to claim 9, - wherein a travel movement of the gantry (20) relative to a base area (U) is carried out by means of a chassis (FW), - wherein the energy transmission from the energy store (ER) of the rotor (24) to the supporting gantry part (T) is carried out during the travel movement of the gantry (20).

11. Method according to claim 10, - wherein, as a result of the energy transmission from the energy store (ER) of the rotor (24) to the supporting gantry part (T) by means of the energy transmission system (C), electrical energy for an electric travel drive (FA) which interacts with the chassis (FW) is transmitted from the energy store (ER) of the rotor (24) to the supporting gantry part (T), - wherein the travel movement of the gantry (20) is driven by means of the electric travel drive (FA) based on the electrical energy for the electric travel drive (FA).

12. Method according to one of claims 9 to 11, - wherein the supporting gantry part (T) has a first connecting element (C1) of the energy transmission system (C), wherein the rotor (24) has a second connecting element (C2) of the energy transmission system (C), wherein the first connecting element (C1) and the second connecting element (C2) are aligned correspondingly to one another for establishing an energy transmission connection, - wherein the rotor (24) is angularly positioned in a coupling angular position relative to the supporting gantry part (T) in such a way that the first connecting element (C1) and the second connecting element (C2) are aligned correspondingly to one another for establishing the energy transmission connection.

13. Method according to claim 12, - wherein the energy transmission connection is established by coupling the first connecting element (C1) and the second connecting element (C2) to one another by arranging the first connecting element (C1) and the second connecting element (C2) in a coupling position relative to one another while the rotor (24) is at rest relative to the supporting gantry part (T) and is in the coupling angular position relative to the supporting gantry part (T), - wherein the energy transmission connection is interrupted by decoupling the first connecting element (C1) and the second connecting element (C2) from one another by arranging the first connecting element (C1) and the second connecting element (C2) in a decoupling position relative to one another while the rotor (24) is at rest relative to the supporting gantry part (T) and is in the coupling angular position relative to the supporting gantry part (T).