Computed tomography scanner with a vibration measuring device

Abstract

Computed tomography device (1) comprising a gantry (20) and a vibration measuring device (5), - wherein the gantry (20) comprises a supporting structure (23), a pivot bearing (4B) and a pivot frame (24), - wherein the vibration measuring device (5) is attached to the support structure (23), - wherein the rotating frame (24) is rotatably arranged on the supporting structure (23) by means of the rotary bearing (4B) relative to the supporting structure (23) and to the vibration measuring device (5) about an axis of rotation (4A), - wherein the vibration measuring device (5) is set up to record longitudinal vibration data relating to longitudinal vibrations (Z) of the supporting structure (23), wherein the longitudinal vibrations (Z) of the supporting structure (23) occur parallel to the axis of rotation (4A), - wherein the vibration measuring device (5) is set up to record transverse vibration data relating to transverse vibrations (X) of the supporting structure (23), wherein the transverse vibrations (X) of the supporting structure (23) are perpendicular to the axis of rotation (4A).

Description

[0001] The invention relates to a computed tomography device with a vibration measuring device.

[0002] Significant imbalances can occur in a computed tomography (CT) scanner due to the high speeds at which its components rotate. These imbalances should be minimized as much as possible, particularly for reasons of safety, image quality, and the lifespan of the affected components, especially the rotary bearing. During in-service balancing, the CT scanner is operated and balanced under normal operating conditions, for example, in the examination room or in a test environment, such as a production line. By attaching vibration sensors and performing calibration runs, suitable positions for balancing weights can be determined using a balancing algorithm, such as one based on the coefficient of influence method. Ideally, after balancing, the CT scanner should have low static imbalance and low moment imbalance.

[0003] The state of the art in this context includes US 2005 / 0 013 403 A1, US 2009 / 0 177 419 A1 and DE 10 2018 209 466 A1.

[0004] The invention aims to provide an alternative to conventional vibration measurement in computed tomography systems, particularly with regard to improving the accuracy and / or robustness of the vibration measurement, without requiring more sensitive and therefore more expensive sensors. The independent claims relate to solutions to this problem. The dependent claims relate to specific embodiments of these solutions. Regardless of the grammatical gender of a given term, persons of male, female, or other gender identities are included.

[0005] The invention relates to a computed tomography device comprising a gantry and a vibration measuring device, - wherein the gantry comprises a supporting structure, a pivot bearing and a rotating frame, - wherein the vibration measuring device is attached to the supporting structure, - wherein the rotary frame is rotatably arranged on the support structure about an axis of rotation relative to the support structure and the vibration measuring device by means of the rotary bearing, - wherein the vibration measuring device is set up to record longitudinal vibration data relating to longitudinal vibrations of the supporting structure, wherein the longitudinal vibrations of the supporting structure occur parallel to the axis of rotation, - wherein the vibration measuring device is set up to record transverse vibration data relating to transverse vibrations of the supporting structure, wherein the transverse vibrations of the supporting structure are perpendicular to the axis of rotation.

[0006] The vibration data can include, in particular, acceleration data, velocity data, and / or displacement data. The vibration data can specifically relate to vibrations caused by an imbalance in the rotational movement of the rotating frame relative to the supporting structure around the axis of rotation. In particular, it can be specified that the longitudinal vibrations occur horizontally and / or that the transverse vibrations occur horizontally.

[0007] For example, the vibration measuring device may include a vibration sensor for recording longitudinal vibration data and a vibration sensor for recording transverse vibration data. Alternatively, the vibration measuring device may include a multi-axis vibration sensor for recording both longitudinal and transverse vibration data.

[0008] Each vibration sensor mentioned here can, for example, be designed as a microelectromechanical system (MEMS) and / or be mounted on a sensor suspension so that it can oscillate relative to the supporting structure. The sensor suspension can, in particular for the mechanical pre-amplification of the vibrations, have a natural frequency that is close to the rotational frequency of the rotating frame's movement around the axis of rotation relative to the supporting structure.

[0009] Attaching vibration sensors to the supporting structure has the advantage that they are not directly affected by a replacement of the slewing frame and / or maintenance of the slewing bearing, and in particular do not need to be mechanically and / or electronically disconnected from their corresponding connection partners.

[0010] The vibration measuring device can provide measurement data, particularly with a combination of measurement signals suitable for operational balancing. Specifically, it can measure the reaction forces in the rotary bearing within the supporting structure over time, caused by the unbalanced masses. These can be, in particular, radial bearing forces and / or axial bearing forces. The axial bearing forces can cause harmonic movement of the supporting structure in a longitudinal direction, especially in the form of longitudinal vibrations. The radial bearing forces can cause harmonic movement in a direction perpendicular to the longitudinal direction, for example, in a transverse direction, especially in the form of transverse vibrations.A particularly advantageous influence coefficient matrix can be created using a vibration sensor located in the upper part of the supporting structure near the plane of the pivot bearing, which records longitudinal and transverse vibration data.

[0011] This means that less sensitive, but more cost-effective vibration sensors can be used to perform sufficiently accurate operational balancing on a computed tomography device, even if the vibration values ​​are relatively low, for example due to rigidly mounted support structures.

[0012] One embodiment provides that the rotary bearing extends annularly in a plane of rotation and / or that the vibration measuring device has a vibration sensor positioned substantially coplanar to the plane of rotation. In particular, it may be provided that the vibration sensor positioned substantially coplanar to the plane of rotation is configured to detect longitudinal vibration data and / or that the vibration sensor positioned substantially coplanar to the plane of rotation is configured to detect transverse vibration data. In particular, the multi-axis vibration sensor may be positioned substantially coplanar to the plane of rotation.

[0013] One embodiment provides that the support structure is designed for placement on the floor of an examination room and / or that the vibration measuring device is attached in a region of the support structure far from the floor and / or at an edge of the support structure far from the floor. The region far from the floor can be located, for example, in the upper half of the support structure, particularly in the upper third. It is especially possible that the region far from the floor and a region near the floor are opposite each other with respect to the axis of rotation. Higher vibration values ​​can be detected in the region far from the floor, particularly because of the greater amplitude of movement possible there compared to the region near the floor.

[0014] One embodiment provides that the computed tomography device has a data processing unit and / or that the data processing unit is configured to calculate measurement data relating to an imbalance of the rotating frame and / or a balancing of the rotating frame, based on the longitudinal vibration data and / or the transverse vibration data.

[0015] In particular, the gantry may be provided with a first set of primary balancing weights and / or a second set of secondary balancing weights. Specifically, the first set of primary balancing weights may be attached to the rotating frame in such a way that the first set of primary balancing weights follows a rotational movement of the rotating frame relative to the supporting structure about the axis of rotation. Specifically, the second set of secondary balancing weights may be attached to the rotating frame in such a way that the second set of secondary balancing weights follows the rotational movement of the rotating frame relative to the supporting structure about the axis of rotation.

[0016] In particular, it may be provided that the first set of first balancing weights is arranged in a first balancing plane and / or that the second set of second balancing weights is arranged in a second balancing plane. The first balancing plane may, for example, be parallel to the second balancing plane. The axis of rotation may, for example, be perpendicular to the first balancing plane and / or perpendicular to the second balancing plane.

[0017] In particular, based on the measurement data relating to the imbalance of the rotating frame and / or the balancing of the rotating frame, a position and / or a mass for at least one first balancing weight of the first set of first balancing weights and / or a position and / or a mass for at least one second balancing weight of the second set of second balancing weights can be determined and / or set.

[0018] One embodiment provides that the support structure has a support frame, a tilting frame and a tilting bearing, wherein the tilting frame is arranged on the support frame by means of the tilting bearing in such a way that a tilting angle of the tilting frame relative to the support frame can be changed by a tilting movement of the tilting frame relative to the support frame about the tilting axis, wherein the rotating frame is arranged on the tilting frame by means of the pivot bearing in such a way that the rotating frame follows the tilting movement of the tilting frame.

[0019] The tilting axis can be horizontal. In particular, it can be provided that, for a reference angle of the tilting frame relative to the support frame, the axis of rotation is horizontal and / or coincident with a system axis of the gantry. In particular, it can be provided that the longitudinal vibrations of the support structure occur parallel to the axis of rotation when the tilting frame is arranged at the reference angle relative to the support frame.

[0020] In particular, it may be provided that the vibration measuring device is attached to the tilting frame in such a way that the vibration measuring device is at rest relative to the tilting frame during the tilting movement of the tilting frame, or that the vibration measuring device is attached to the support frame in such a way that the vibration measuring device is at rest relative to the support frame during the tilting movement of the tilting frame.

[0021] One embodiment provides that the vibration measuring device has a tilting frame vibration sensor, wherein the tilting frame vibration sensor is attached to the tilting frame in such a way that the tilting frame vibration sensor follows the tilting movement of the tilting frame.

[0022] One embodiment provides that the vibration measuring device has a support frame vibration sensor, wherein the support frame vibration sensor is attached to the support frame in such a way that during the tilting movement of the tilting frame the support frame vibration sensor is at rest relative to the support frame.

[0023] One embodiment provides that the gantry has an X-ray source for generating X-rays and an X-ray detector for detecting the X-rays, wherein the X-ray source and the X-ray detector are attached to the rotating frame and cooperate to acquire projection data, wherein the X-ray source and the X-ray detector are at rest relative to the rotating frame when the rotating frame rotates about the axis of rotation relative to the supporting structure.

[0024] One embodiment provides that the gantry has an opening for receiving an object under investigation, wherein the opening extends in a tunnel shape along the axis of rotation, and / or that the rotating frame is arranged in a ring shape around the opening.

[0025] The invention further relates to the use of a vibration measuring device in the computed tomography device according to the invention, in particular to record the longitudinal vibration data and the transverse vibration data.

[0026] Furthermore, a method for acquiring longitudinal vibration data and transverse vibration data for a computed tomography device is hereby disclosed, - wherein the computed tomography device has a gantry and a vibration measuring device, - wherein the gantry comprises a supporting structure, a pivot bearing and a rotating frame, - wherein the vibration measuring device is attached to the supporting structure, - wherein the rotary frame is rotatably arranged on the support structure about an axis of rotation relative to the support structure and the vibration measuring device by means of the rotary bearing, - wherein longitudinal vibration data relating to longitudinal vibrations of the supporting structure are recorded by means of the vibration measuring device, wherein the longitudinal vibrations of the supporting structure occur parallel to the axis of rotation, - wherein transverse vibration data relating to transverse vibrations of the supporting structure are recorded by means of the vibration measuring device, wherein the transverse vibrations of the supporting structure are perpendicular to the axis of rotation.

[0027] Within the scope of the invention, features described in relation 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 article "a" or "an" does not preclude the possibility that the feature in question may be present multiple times.

[0028] The following section explains features of the invention and provides examples that may be helpful for understanding the invention and / or the technical problem to be solved, with reference to the accompanying figures. The representation in the figures is schematic, highly simplified, and not necessarily to scale. The Fig. Figure 1 shows a sectional view of a gantry with a first vibration sensor for capturing first transverse vibration data and a second vibration sensor for capturing second transverse vibration data. The Fig. Figure 2 shows another sectional view of the gantry with the first vibration sensor for capturing the first transverse vibration data and the second vibration sensor for capturing the second transverse vibration data. The Fig. Figure 3 shows a sectional view of a gantry with a vibration sensor for capturing longitudinal vibration data and a vibration sensor for capturing transverse vibration data. The Fig. Figure 4 shows another sectional view of the gantry with the vibration sensor for recording longitudinal vibration data and the vibration sensor for recording transverse vibration data. The Fig. Figure 5 shows a sectional view of another example of a gantry with a vibration sensor for capturing longitudinal vibration data and a vibration sensor for capturing transverse vibration data. The Fig. Figure 6 shows another sectional view of the further example for the gantry with the vibration sensor for recording the longitudinal vibration data and the vibration sensor for recording the transverse vibration data. The Fig. Figure 7 shows a sectional view of a gantry with a multi-axis vibration sensor for capturing longitudinal vibration data and for capturing transverse vibration data. The Fig. Figure 8 shows another sectional view of the gantry with the multi-axis vibration sensor for capturing longitudinal vibration data and for capturing transverse vibration data. The Fig. Figure 9 shows a computed tomography scanner with a gantry and a vibration measuring device.

[0029] The Fig. Figure 1 shows a sectional view of the gantry 20 with the first vibration sensor 5X1 for capturing first transverse vibration data relating to the first transverse vibrations X1 of the supporting structure 23, and the second vibration sensor 5X2 for capturing second transverse vibration data relating to the second transverse vibrations X2 of the supporting structure 23.

[0030] The example shown provides that the supporting structure 23 has a support frame 21, a tilting frame 22 and a tilting bearing 2B, wherein the tilting frame 22 is arranged on the support frame 21 by means of the tilting bearing 2B so that it can be tilted relative to the support frame 21 about a tilting axis 2A, such that the tilting angle of the tilting frame 22 relative to the support frame 21 can be changed by a tilting movement of the tilting frame 22 relative to the support frame 21 about the tilting axis 2A, wherein the rotating frame 24 is arranged on the tilting frame 22 so that it can be rotatably arranged relative to the tilting frame 22 about the pivot axis 4A by means of the pivot bearing 4B, such that the rotating frame 24 follows the tilting movement of the tilting frame 22.

[0031] The Fig. Figure 2 shows another sectional view of the gantry 20 with the first vibration sensor 5X1 for acquiring the first transverse vibration data and the second vibration sensor 5X2 for acquiring the second transverse vibration data. The first balancing plane 5E1 is parallel to the second balancing plane 5E2 and parallel to the rotary bearing plane 4E. The axis of rotation 4A is perpendicular to the first balancing plane 5E1 and perpendicular to the second balancing plane 5E2. The first balancing plane 5E1 is spaced from the second balancing plane 5E2 along the axis of rotation 4A.

[0032] In particular, the rotary frame 24 can extend along the axis of rotation 4A to the first balancing plane 5E1 and to the second balancing plane 5E2, even if the corresponding areas of the rotary frame 24 are not shown in the sectional view. The pivot bearing plane 4E is located between the first balancing plane 5E1 and the second balancing plane 5E2. In another embodiment, the first balancing plane 5E1 is located between the pivot bearing plane 4E and the second balancing plane 5E2.

[0033] The first vibration sensor 5X1 is attached to the support frame 21 approximately at the level of the isocenter, i.e., at the level of the system axis 1A, coplanar to the first balancing plane 5E1. The second vibration sensor 5X2 is attached to the support frame 21 approximately at the level of the isocenter, i.e., at the level of the system axis 1A, coplanar to the second balancing plane 5E2.

[0034] The Fig. Figure 3 shows a sectional view of the gantry 20 with the vibration sensor 5Z for acquiring longitudinal vibration data and the vibration sensor 5X for acquiring transverse vibration data. The vibration sensor 5Z is attached to the tilting frame 22 such that it follows the tilting movement of the frame, and the vibration sensor 5X is attached to the support frame 21 such that it remains stationary relative to the support frame 21 during the tilting movement of the frame. The example shown provides that the support structure 23 is designed for installation on the floor of an investigation room, with the vibration measuring device 5 attached in a region of the support structure 23 far from the floor and / or at an edge of the support structure 23 far from the floor.

[0035] The Fig. Figure 4 shows another sectional view of the gantry 20 with the vibration sensor 5Z for acquiring longitudinal vibration data and the vibration sensor 5X for acquiring transverse vibration data. The vibration sensor 5X is located in the transverse plane 5E, which is vertical and perpendicular to the system axis 1A and coplanar with the pivot plane 4E. The example shown provides that the pivot bearing 4B extends annularly in the pivot plane 4E, with the vibration sensor 5Z and the vibration sensor 5X being positioned coplanar with the pivot plane 4E.

[0036] The one in Fig. Gantry 20 shown in Figure 4 can have a first set of first balancing weights and a second set of second balancing weights. The first set of first balancing weights can be arranged in the first balancing plane 5E1. The first balancing plane 5E1 is shown by way of example in the Fig. 2 shown and can accordingly also be found in Gantry 20, which is located in the Fig. As shown in Figure 4, the second set of second balancing weights can be arranged in the second balancing plane 5E2. The second balancing plane 5E2 is shown by way of example in the Fig. 2 shown and can accordingly also be found in Gantry 20, which is located in the Fig. As shown in Figure 4, the bearing plane 4E may be located between the first balancing plane 5E1 and the second balancing plane 5E2, or the first balancing plane 5E1 may be located between the bearing plane 4E and the second balancing plane 5E2. In another embodiment, the bearing 4B extends into a balancing plane, for example, the first balancing plane 5E1, such that the balancing plane and the bearing plane 4E are coincident.

[0037] The Fig. Figure 5 shows a sectional view of another example of the gantry 20 with the vibration sensor 5Z for acquiring longitudinal vibration data and the vibration sensor 5X for acquiring transverse vibration data, wherein the vibration sensor 5Z is attached to the tilting frame 22 such that it follows the tilting movement of the tilting frame 22, and wherein the vibration sensor 5X is attached to the tilting frame 22 such that it follows the tilting movement of the tilting frame 22. In another embodiment, the vibration sensor 5X is positioned substantially coplanar to the pivot plane 4E and attached to the tilting frame 22 such that it follows the tilting movement of the tilting frame 22.

[0038] The Fig. Figure 6 shows another sectional view of the further example for the gantry 20 with the vibration sensor 5Z for recording the longitudinal vibration data and the vibration sensor 5X for recording the transverse vibration data. The vibration sensor 5X is located in the transverse plane 5E, which is vertical and perpendicular to the system axis 1A and spaced apart from the pivot plane 4E along the system axis 1A.

[0039] The one in Fig. Gantry 20 shown in Figure 6 can have a first set of first balancing weights and a second set of second balancing weights. The first set of first balancing weights can be arranged in the first balancing plane 5E1. The first balancing plane 5E1 is shown by way of example in the Fig. 2 shown and can accordingly also be found in Gantry 20, which is located in the Fig. Figure 6 shows that the second set of second balancing weights can be arranged in the second balancing plane 5E2. The second balancing plane 5E2 is shown by way of example in the Fig. 2 shown and can accordingly also be found in Gantry 20, which is located in the Fig. Figure 6 shows that the second balancing plane 5E2 is congruent with the transverse plane 5E. In particular, it may be provided that the rotary bearing plane 4E is located between the first balancing plane 5E1 and the second balancing plane 5E2, or that the first balancing plane 5E1 is located between the rotary bearing plane 4E and the second balancing plane 5E2.

[0040] The Fig. Figure 7 shows a sectional view of the gantry 20 with the multi-axis vibration sensor 5XZ for capturing longitudinal vibration data and for capturing transverse vibration data.

[0041] The Fig. Figure 8 shows another sectional view of the gantry 20 with the multi-axis vibration sensor 5XZ for acquiring longitudinal and transverse vibration data. The multi-axis vibration sensor 5XZ is positioned coplanarly with respect to the rotary bearing plane 4E.

[0042] The one in Fig. Gantry 20 shown in Figure 8 can have a first set of first balancing weights and a second set of second balancing weights. The first set of first balancing weights can be arranged in the first balancing plane 5E1. The first balancing plane 5E1 is shown by way of example in the Fig. 2 shown and can accordingly also be found in Gantry 20, which is located in the Fig. Figure 8 shows that the second set of second balancing weights can be arranged in the second balancing plane 5E2. The second balancing plane 5E2 is shown by way of example in the Fig. 2 shown and can accordingly also be found in Gantry 20, which is located in the Fig. Figure 8 shows that the rotary bearing plane 4E may be located between the first balancing plane 5E1 and the second balancing plane 5E2, or that the first balancing plane 5E1 may be located between the rotary bearing plane 4E and the second balancing plane 5E2.

[0043] The Fig. Figure 9 shows the computed tomography device 1, comprising the gantry 20 and the vibration measuring device 5, - wherein the gantry 20 comprises the support structure 23, the rotary bearing 4B and the rotary frame 24, - wherein the vibration measuring device 5 is attached to the support structure 23, - wherein the rotary frame 24 is rotatably arranged on the support structure 23 by means of the rotary bearing 4B relative to the support structure 23 and to the vibration measuring device 5 about the axis of rotation 4A, - wherein the vibration measuring device 5 is set up to record longitudinal vibration data relating to longitudinal vibrations Z of the supporting structure 23, wherein the longitudinal vibrations Z of the supporting structure 23 occur parallel to the axis of rotation 4A, - wherein the vibration measuring device 5 is set up to record transverse vibration data relating to transverse vibrations X of the supporting structure 23, wherein the transverse vibrations X of the supporting structure 23 are perpendicular to the axis of rotation 4A.

[0044] The tilting axis 2A can be horizontal. In particular, it can be provided that, for a reference angle of the tilting frame 22 relative to the support frame 21, the rotational axis 4A is horizontal and / or coincident with a system axis 1A of the gantry 20. In particular, it can be provided that the longitudinal vibrations Z of the support structure 23 occur parallel to the rotational axis 4A when the tilting frame 22 is arranged at the reference angle relative to the support frame 21.

[0045] The computed tomography scanner 1 comprises the patient table 10 with the table base 11 and the table board 12. The examination object 13 is positioned on the table board 12. The table board 12 is movable relative to the table base 11 along the system axis 1A. The computed tomography scanner 1 includes the data processing unit 30 with the memory 31, the data transmission interface 32, the processor 33, the image processing computer 3, the manual input unit 38, and the visual output unit 39 for a graphical user interface (GUI).

[0046] The example shown provides that the computed tomography device 1 has the data processing unit 30, wherein the data processing unit 30 is configured to calculate measurement data relating to an imbalance of the rotating frame 24 and / or a balancing of the rotating frame 24, based on the longitudinal vibration data and / or the transverse vibration data.

[0047] The example shown provides that the gantry 20 includes an X-ray source 44 for generating X-rays 47 and an X-ray detector 48 for detecting the X-rays 47. The X-ray source 44 and the X-ray detector 48 are attached to the rotating frame 24 and work together to acquire projection data. The X-ray source 44 and the X-ray detector 48 are at rest relative to the rotating frame 24 when the rotating frame 24 rotates about the axis of rotation 4A relative to the support structure 23. The object under investigation 13 can be, for example, a patient or a phantom. The X-rays 47 can interact with an area of ​​the object under investigation 13, in particular when the object under investigation 13 is inserted into the opening 9 along the system axis 1A such that the area of ​​investigation is located within the radiological interaction zone 4.

[0048] The example shown provides that the gantry 20 has the opening 9 for receiving the object of investigation 13, wherein the opening 9 extends in a tunnel shape along the axis of rotation 4A, wherein the rotating frame 24 is arranged in a ring shape around the opening 9. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 2005 / 0 013 403 A1

[0003] US 2009 / 0 177 419 A1

[0003] DE 10 2018 209 466 A1

[0003]

Claims

[1] Computed tomography device (1) comprising a gantry (20) and a vibration measuring device (5), - wherein the gantry (20) comprises a supporting structure (23), a pivot bearing (4B) and a pivot frame (24), - wherein the vibration measuring device (5) is attached to the support structure (23), - wherein the rotating frame (24) is rotatably arranged on the supporting structure (23) by means of the rotary bearing (4B) relative to the supporting structure (23) and to the vibration measuring device (5) about an axis of rotation (4A), - wherein the vibration measuring device (5) is set up to record longitudinal vibration data relating to longitudinal vibrations (Z) of the supporting structure (23), wherein the longitudinal vibrations (Z) of the supporting structure (23) occur parallel to the axis of rotation (4A), - wherein the vibration measuring device (5) is set up to record transverse vibration data relating to transverse vibrations (X) of the supporting structure (23), wherein the transverse vibrations (X) of the supporting structure (23) are perpendicular to the axis of rotation (4A). [2] Computed tomography device (1) according to claim 1, - wherein the rotary bearing (4B) extends in a ring shape in a rotary bearing plane (4E), - wherein the vibration measuring device (5) has a vibration sensor positioned substantially coplanar to the plane of the rotary bearing (4E). [3] Computed tomography device (1) according to claim 1 or 2, - wherein the supporting structure (23) is designed for installation on the floor of an examination room, - wherein the vibration measuring device (5) is attached in a ground-remote area of ​​the support structure (23) and / or at a ground-remote edge of the support structure (23). [4] Computed tomography device (1) according to any one of claims 1 to 3, - wherein the computed tomography device (1) has a data processing unit (30), - wherein the data processing unit (30) is configured to calculate measurement data relating to an imbalance of the rotating frame (24) and / or a balancing of the rotating frame (24) based on the longitudinal vibration data and / or the transverse vibration data. [5] Computed tomography device (1) according to any one of claims 1 to 4, - wherein the supporting structure (23) comprises a support frame (21), a tilting frame (22) and a tilting bearing (2B), - wherein the tilting frame (22) is arranged on the support frame (21) by means of the tilting bearing (2B) so as to be tiltable relative to the support frame (21) about a tilting axis (2A) such that a tilting angle of the tilting frame (22) relative to the support frame (21) can be changed by a tilting movement of the tilting frame (22) relative to the support frame (21) about the tilting axis (2A), - wherein the rotating frame (24) is arranged on the tilting frame (22) so as to be rotatable about the axis of rotation (4A) relative to the tilting frame (22) by means of the pivot bearing (4B) that the rotating frame (24) follows the tilting movement of the tilting frame (22). [6] Computed tomography device (1) according to claim 5, - wherein the vibration measuring device (5) comprises a tilting frame vibration sensor, - wherein the tilt frame vibration sensor is attached to the tilt frame (22) in such a way that the tilt frame vibration sensor follows the tilting movement of the tilt frame (22). [7] Computed tomography device (1) according to claim 5 or 6, - wherein the vibration measuring device (5) comprises a support frame vibration sensor, - wherein the support frame vibration sensor is attached to the support frame (21) in such a way that during the tilting movement of the tilting frame (22) the support frame vibration sensor is at rest relative to the support frame (21). [8] Computed tomography device (1) according to any one of claims 1 to 7, - wherein the gantry (20) comprises an X-ray source (44) for generating X-ray radiation (47) and an X-ray detector (48) for detecting the X-ray radiation (47), - wherein the X-ray source (44) and the X-ray detector (48) are attached to the rotating frame (24) and work together to acquire projection data, - wherein the X-ray source (44) and the X-ray detector (48) are at rest relative to the rotating frame (24) when the rotating frame (24) rotates relative to the supporting structure (23) about the axis of rotation (4A). [9] Computed tomography device (1) according to any one of claims 1 to 8, - wherein the gantry (20) has an opening (9) for receiving an object of investigation (13), - wherein the opening (9) extends in a tunnel shape along the axis of rotation (4A), - wherein the rotating frame (24) is arranged in a ring shape around the opening (9). [10] Use of a vibration measuring device (5) in the computed tomography device (1) according to any one of claims 1 to 9, in particular to acquire the longitudinal vibration data and the transverse vibration data.

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