X-ray imaging device

Abstract

The invention relates in particular to the construction of an apparatus adapted for use in a dental or medical X-ray imaging environment. The apparatus comprises a support construction 12, an X-ray source 14, an X-ray detector and a visible light light emitting construction 141' mounted to the support construction 12, and wherein the support construction 12 is configured to be able to position the X-ray source 14 and the visible light light emitting construction 141' at substantially the same position relative to the support construction 12 so as to direct a given field pattern in substantially the same direction to the X-ray detector 15 when positioned at said substantially the same position at a given time. The apparatus comprises a first frame portion 11 extending in a first direction and comprising a first end portion and a second end portion, the support construction 12 mounting the X-ray source 14, the X-ray detector and the visible light light emitting construction 141' extending from the first frame portion 11 in a second direction substantially at right angles to the first direction.

Description

TECHNICAL FIELD

[0001] The present invention relates to dental or medical radiography. In particular, the structure of the apparatus according to the present invention is suitable for use in the context of dental or medical X-ray imaging. BACKGROUND

[0002] When exposing a living being to ionizing radiation, in order to produce a medical anatomical image, the imaging has to be performed with as low as possible, but still reasonable image quality, radiation dose according to the imaging purpose.

[0003] One parameter to consider in relation to the radiation dose is the volume of the exposed anatomical structure. When it is not desired to irradiate non-essential parts of the anatomical structure, one faces the problem of correctly positioning the desired anatomical structure and the components of the imaging apparatus relative to each other.

[0004] In order to facilitate such positioning, various positioning lights have been used, for example. These lights can be configured to project, for example, laser lines or light fields on the anatomical structure. In the context of radiography, the term light field indicator is sometimes used to refer to an apparatus incorporated in an X-ray imaging system, which is configured to "predict" the shape and size of the irradiation field during a subsequent exposure. Such systems can include components that are also allowed to remain between the X-ray source and the detector during the imaging exposure, while in some other systems these components that remain between the X-ray source and the detector are moved out of the X-ray beam path prior to the X-ray exposure.

[0005] Computed tomography (CT) is a form of X-ray imaging, in which a volume to be imaged is irradiated from different directions, and from the image information thus acquired, a desired two- or three-dimensional image can be reconstructed.

[0006] Conventional CT apparatuses are large and heavy and are typically installed on the floor. The patient is positioned to be imaged within the examination opening of the apparatus and typically on a horizontally extending and laterally movable examination platform.

[0007] Since the development of cone beam computed tomography (CBCT) technology using slower rotation speeds of the imaging means, apparatuses have been developed that are lighter in weight than more conventional CT apparatuses. In CBCT apparatuses, there are also, for example, CBCT apparatuses that are not designed to be installed on the floor but are configured to be movable.

[0008] Some CT apparatuses designed recently are multi-purpose apparatuses supporting more than one imaging mode, like those configured to enable both 2D and 3D radiography. However, when having more functionality, the complexity of the apparatus tends to increase, for example, due to the arrangement of one or more new degrees of freedom of motion to the components of the apparatus. In addition, the weight of the apparatus can then increase, and some modifications can create new challenges in relation to positioning the anatomical structure for exposure. SUMMARY

[0009] It is an object of the present invention to provide a medical or dental X-ray imaging apparatus, in one particular embodiment a CBCT apparatus, having novel features related to the mutual positioning of the imaging means of the apparatus and the anatomical structure for the imaging exposure.

[0010] The characterizing features of the invention are defined in claim 1. More specifically, these features include that the apparatus of the present disclosure is configured to enable the light field indicator system to project a visible light field pattern from a position substantially the same as the position from which the X-ray beam generating system emits the X-ray radiation beam during the imaging exposure. BRIEF DESCRIPTION OF DRAWINGS

[0011] The invention will now be described in more detail with reference to some preferred embodiments of the invention and the accompanying drawings, in which:

[0012] Figure 1 is a schematic overall side view showing components of an imaging apparatus suitable for including the features of the present disclosure as an example.

[0013] Figures 2a-2c shows some structural details of an embodiment including a motorized guide configuration arranged in functional connection with the X-ray source 14 and the X-ray detector 15 as an example.

[0014] Figure 3 shows a guide configuration as Figures 2a-2c shown, which is partly covered by a housing of a support configuration for the X-ray source 14 and the X-ray detector 15.

[0015] Figures 4a-4c shows a configuration implementing the principle of projecting a visible light field pattern towards the X-ray detector from a position substantially the same as the position configured to emit the X-ray beam during the exposure.

[0016] Figure 5 shows an embodiment in which the X-ray source and the X-ray detector are located outside and extending outside the housing of the support configuration for the X-ray source and the X-ray detector.

[0017] Figure 6 shows a schematic overall side view similar to the embodiment shown in Figure 1 , which is arranged with an element capable of changing orientation.

[0018] Figure 7 is a schematic overall view of the apparatus in a horizontal position, in which certain components are driven to positions other than their base point positions.

[0019] Figure 8aSome details of a patient support suitable for use in the apparatus of the present disclosure are shown as an example.

[0020] Figure 8b As an example a cross section of a patient support is shown.

[0021] Figure 9 is a block diagram illustrating an example of features of a control system of an apparatus. DETAILED DESCRIPTION

[0022] A more complete understanding of the components, processes, and apparatus disclosed herein may be obtained by referring to the accompanying drawings, which are merely schematic diagrams for convenience and ease of illustrating the present disclosure and are therefore not intended to indicate relative sizes and dimensions of devices or components thereof and / or to define or limit the scope of the exemplary embodiments.

[0023] Although specific terms are used in the following description for the sake of clarity, these terms are intended to refer only to the specific structures of the embodiments selected for illustration in the drawings and are not intended to define or limit the scope of the present disclosure. In the following drawings and the following description, it should be understood that the same reference numerals refer to components having the same function.

[0024] The singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise.

[0025] The terms approximately, roughly, and substantially are intended to encompass structural or numerical modifications when used herein that do not significantly affect the purpose of the element or number modified by the term. For example, the term substantially can include a range of variations such as 25%, 10%, or 0% of the relationship described.

[0026] As used in the specification and claims, the term "comprising" may include the embodiments of "consisting of" and "consisting essentially of. As used herein, the terms "comprises," "including," "having," "having," "can," "containing," and variations thereof are intended to be open transitional phrases, terms, or words that require the presence of specified elements / steps and allow for the presence of additional elements / steps.

[0027] Figure 1 The apparatus is shown comprising a longitudinally extending frame portion 11 extending in a first direction and having a first end and a second end. A support structure 12 extends from the longitudinally extending frame portion 11 or "elongated frame portion 11" in a second direction, the support structure supporting an X-ray source 14 and an X-ray detector 15 (such as in FIG. Figure 1The second direction is substantially orthogonal to the first direction. The X-ray source 14 and the X-ray detector 15 may be collectively referred to as an X-ray imaging assembly 14, 15 or part of an X-ray imaging assembly, and may be mounted substantially opposite each other to the support structure 12 for the X-ray source 14 and the X-ray detector 15, but in an embodiment of the present invention, their relative positions are also arranged to be adjustable.

[0028] It should be noted that the structure including the above discussed Figure 1 The device is only an example of a preferred embodiment in the context in which the present invention may be implemented. As just one example, other types of frames and support structures may also be applicable, such as those comprising a "C-arm" for supporting an X-ray source and an X-ray detector.

[0029] Although medical and dental X-ray imaging equipment often include a patient support, Figure 1 One particular type of patient support 18 structure is shown that is mechanically connected to the elongated frame portion 11. This patient support 18 suitable for use in various embodiments of the present invention includes a surface that extends substantially parallel to the elongated frame portion 11. Furthermore, while this patient support 18 is optional, it is preferred that the patient support 18 be mechanically connected to the elongated frame portion 11. Figure 1 In certain embodiments, the patient support 18 is substantially the same length as the elongated frame portion 11 .

[0030] As further discussed below with respect to other figures of the present disclosure, examples of how the X-ray source 14 and the X-ray detector 15 may be mounted to the support structure 12 for the X-ray imaging assemblies 14, 15 are presented. Figure 1 The support structure 12 for the X-ray imaging assemblies 14, 15 is generally shown to include a housing 121. The housing 121 can cover an annular gantry 122 to which the X-ray imaging assemblies 14, 15 are mounted. In one embodiment, the housing 121 can extend to completely cover the X-ray source 14 and the X-ray detector 15. In another embodiment, the gantry housing 121 can cover the structure by which the X-ray source 14 and the X-ray detector 15 are connected to the gantry 122, rather than covering the X-ray source 14 and the X-ray detector 15 themselves.

[0031] The X-ray source 14 and the X-ray detector 15 may be arranged to be rotatable about the rotation axis 13. In one embodiment, the annular gantry 122 on which the X-ray source 14 and the X-ray detector 15 are mounted is rotatable. Figure 1In the particular construction shown, the rotation axis 13 coincides or can be made to coincide with the central axis of the support structure 12 for the X-ray imaging assemblies 14, 15, the central axis of the housing 121 and the central axis of the annular gantry 122 as described above.

[0032] Therefore, according to one aspect, Figure 1 Not directly visible in FIG, for example, the device comprises a drive mechanism 16 arranged to drive the X-ray source 14 and the X-ray detector 15 around the axis of rotation 13. Figure 1 In this case, the rotation axis 13 can be a physical axis or a virtual rotation axis.

[0033] According to one aspect, the rotation axis 13 or center of rotation of the X-ray source 14 and X-ray detector 15 coincides with the central axis of the gantry 122 , for example, when driven along a curved path and thereby defining the position of the virtual rotation axis 13 .

[0034] According to one aspect, the rotation axis 13 is an instantaneous (optionally virtual) rotation axis, and the position of the instantaneous rotation axis relative to the central axis of the support structure 12 for the X-ray imaging components 14, 15 as described above, the central axis of the housing 121 and / or the central axis of the annular gantry 122 can be arranged to change.

[0035] The rotation can be arranged to be performed by rotating the frame 122 by any conventional mechanism known to those skilled in the art. In one embodiment, a drive belt driven by at least one pulley is arranged to extend around the annular frame 122. Such a configuration enables the frame 122 to rotate over an angle even exceeding 360 degrees.

[0036] According to another aspect, a further drive mechanism 17 may be arranged to the apparatus to move the support structure 12 for the X-ray imaging assemblies 14, 15 back and forth in a direction substantially parallel to the direction in which the elongated frame portion 11 extends. According to one aspect, the drive mechanism 17 may be arranged to move the support structure 12 along or alongside the elongated frame portion 11.

[0037] According to one aspect, the drive mechanism 17 for driving the support structure 12 in a direction substantially parallel to the direction in which the elongated frame portion 11 extends may comprise a motor arranged to the support structure 12 for the X-ray imaging assemblies 14, 15 itself.

[0038] Regardless of the construction details of the drive mechanism 17 that drives the support structure 12 along the slender frame portion 11 or beside the slender frame portion 11, in one embodiment, the construction of the device allows the support structure 12 to be driven along substantially the entire length between the first end and the second end of the slender frame portion 11.

[0039] Steering Figure 2a-2c , which show some structural details of one possible embodiment that can be used when implementing the present invention as an example. Figures 2a-2c , a portion of the housing 121 of the support structure 12 for the X-ray imaging assemblies 14, 15 is removed, which makes visible the guide structure 50, which can be arranged in functional connection with at least the X-ray source 14 of the X-ray imaging assemblies 14, 15. According to one embodiment, the guide structure 50 is motorized.

[0040] Although Figures 2a-2c Two guide structures 50 are shown that are configured to enable lateral movement of the X-ray source 14 and the X-ray detector 15 relative to their support structure 12 or relative to the gantry 122, but according to one embodiment only the guide structure 50 is arranged for the X-ray source 14.

[0041] Lateral movement of the X-ray source 14 and / or X-ray detector 15 relative to the support structure 12 or gantry 122 may be implemented to occur in a plane orthogonal to the axis of rotation 13 about which the X-ray source 14 and X-ray detector 15 are arranged to rotate.

[0042] According to one aspect, at least one guide structure 50 , for example as discussed herein, is mounted to an annular gantry 122 that is disposed to the support structure 12 that supports the X-ray imaging assemblies 14 , 15 .

[0043] The range of motion provided by the guide structure 50 may include a base position, a first extreme position and a second extreme position located in an opposite direction from the base position.

[0044] Although Figures 2a-2c An embodiment is shown in which a structurally identical guide arrangement 50 is arranged for both the X-ray source 14 and the X-ray detector 15, and the guide arrangement 50 is shown in different details for the sake of clarity of the drawings, since not all components are even visible in all of these drawings, and not every and every component is shown. Figures 2a-2c Each of the figures is shown with a corresponding reference numeral.

[0045] According to one aspect, as an example, the guide structure 50 includes a bracket 51 mounted to at least the X-ray source 14 for lateral movement thereof. Figure 2c The lateral motion range of the bracket 51 may include a base position and a first limit position and a second limit position located in a direction opposite to the base position.

[0046] Furthermore, according to one aspect, at least one guide structure 50 comprises: at least one guide slot or rail 52 on one side of the support structure 12 or frame 122; and a mating structure 52' (also on one side of the bracket 51) Figure 2c (see in the ).

[0047] According to one aspect, the at least one guiding structure 50 may include a motorized structure 53 functionally connected to the bracket 51, the motorized structure 53 providing lateral movement of at least the X-ray source 14 within the lateral range of movement.

[0048] According to one aspect, the motorized structure 53 may include a drive screw 54 aligned parallel to the at least one guide slot or rail 52 and arranged in functional connection with the carriage 51. Figures 2a-2c In the embodiment shown in FIG, the drive screw 54 is arranged to be rotated by a belt 531 driven by a motor 532, but another configuration may alternatively be used to rotate the drive screw 54.

[0049] According to yet another aspect, the guide structure 50 may include a position sensor device 55 configured to obtain information about the position of the X-ray source 14 and / or the X-ray detector 15 within a lateral motion range of at least either one of the X-ray source 14 and the X-ray detector 15 .

[0050] According to one aspect, the position sensor device 55 can be configured to detect the position of the bracket 51 within the lateral range of motion of the frame 51 .

[0051] According to a further aspect, a signal path can be arranged between the at least one guide formation 50 and a control system of the device.

[0052] According to one aspect, the signal path may include a signal path between the position sensor device 55 and a control system of the device.

[0053] According to one aspect, the position sensor device 55 is an absolute position sensor device 55 .

[0054] According to one aspect, the absolute position sensor arrangement 55 may include a magnetic component 56 structurally connected to the bracket 51 and movably connected to a rod 57 extending parallel to the at least one guide slot or rail 52 and the drive screw 54 .

[0055] According to one aspect, the first longitudinally extending frame portion 11 extends horizontally or is arranged to move to extend horizontally, and the motorized structure 53 of the guide structure 50 is arranged to be self-retaining with respect to: i) a position of at least either one of the X-ray source 14 and the X-ray detector 15 within their lateral range of motion; and ii) a rotational position in which the first drive mechanism 16 is configured to move the X-ray source 14 and the X-ray detector 15 about a virtual or physical axis of rotation 13.

[0056] According to one embodiment, the X-ray source 14 and the X-ray detector 15 extend from the same side of the annular gantry housing 121, and this particular side of the annular gantry housing 121 may include an otherwise closed surface, but an opening 59 is present on the surface for at least either the X-ray source 14 or the X-ray detector 15. The opening 59 may be sized to allow a range of lateral motion of the X-ray source 14 and / or the X-ray detector 15 when guided by the at least one guide structure 50.

[0057] Figure 2c and Figure 3 An embodiment is shown that includes a mounting bracket 58 configured to extend through an opening 59 in the gantry housing 121. The mounting bracket 58 can be secured to the bracket 51 on one side and to the X-ray source 14 and / or X-ray detector 15 on the other side. Mounting brackets 58 of varying sizes can be used. As another detail, regarding the general guide configuration, the motion it enables need not necessarily be lateral.

[0058] Reference Figures 4a-4c ,and Figure 2a 22c, the structure shown further includes a light emitting component. Alternatively, referring to the above disclosure of the background of the present invention, a light field indicator 141 including a visible light emitting structure 141' is shown, which is configured to emit a visible light field pattern.

[0059] exist Figures 4a-4c In the example structure of , the visible light emitting structure 141 'is arranged to be positioned fixed to the collimator structure 142 of the X-ray source 14, and the three components are arranged to be movable together as a fixed assembly. The movement of the assembly can be achieved, for example, by the guide structure 50 as discussed above.

[0060] As an alternative, the light emitting construction 141 ′ may also be directly attached to (the housing of) the X-ray source 14 or elsewhere attached to a frame structure of a collimator construction 142 which is attached to or functionally connected to the X-ray source 14 .

[0061] In such Figures 4a-4cIn the illustrated configuration, the visible light emitting arrangement 141' can be configured to project light field patterns that differ in shape and size. Preferably, the X-ray beam collimator arrangement 142 is configured to confine the X-ray beams to substantially the same shape and / or size.

[0062] Therefore, when considering the use of this structure, the X-ray source 14, the collimator structure 142 and the visible light emitting structure 141 ' are as follows. Figures 4a-4c The device shown can be moved to a position according to the Figure 4a The position of the visible light emitting structure 141 'is located at the same position as the X-ray source. Figure 4b is located at substantially the same position as that at which the X-ray beam was emitted during the imaging exposure.

[0063] In other words and more generally, the support structure 12 carrying the X-ray source 14 and the X-ray detector can be constructed to be able to position the X-ray source 14 and the visible light emitting structure 141' at substantially the same position, so that when they are located at the substantially same position at a given time, they can guide a given field pattern in substantially the same direction towards the X-ray detector 15.

[0064] picture Figures 4a-4c The structure shown thus implements a process, for example, first driving the visible light emitting structure 141 "to the Figure 4a The anatomical structure to be imaged is positioned in the imaging region of the device, and the light field pattern thereby to be projected onto the anatomical structure is then adjusted according to the given imaging mode to be applied and according to the specific individual anatomical structure.

[0065] The process may also include a control system for the device, the control system including information about the correlation between the size of the light field pattern projected onto the X-ray detector 15 and the collimation of the X-ray beam, so that the sizes of the visible light and X-ray illumination beams substantially correspond to each other near the X-ray detector 15. Or, in other words, the sizes of the visible light pattern and the X-ray illumination field pattern are substantially corresponding to each other at a given distance from the X-ray detector 15.

[0066] According to one embodiment, information on the size and shape of the visible light pattern is provided for X-ray beam collimator control, and one or more components of the collimator structure 142 are moved so as to define an opening through which the shape and size of the X-ray beam pattern striking the anatomical structure at least substantially corresponds to the shape and size of the light pattern when the X-ray source 14 has been moved to a position that substantially corresponds to the position at which the visible light pattern is projected.

[0067] According to another embodiment, adjusting the light field pattern occurs via control of the collimator structure 142, such that when the opening limited by the collimator structure 142 is adjusted, the shape and size of the light field pattern are adjusted accordingly, as based on correlation information recorded in the control system of the device. That is, in such an embodiment, a separate input device for adjusting the light field pattern is not required, as its control can occur via control of the collimator structure 142.

[0068] In both embodiments described above, the control system of the device can include information about which X-ray beam and light field pattern correspond to each other in a given situation (e.g., in the context of a given imaging mode to be applied). The imaging mode can be, for example, imaging a certain anatomical structure from a certain direction, meaning that, generally speaking, the surface of the anatomical structure will be located at more or less the same distance from the X-ray detector 15—and therefore also more or less the same distance from the X-ray source 14 and the light emitting element 141 when it is positioned in the same position in the support structure 12. When the imaging mode involves rotating around the anatomical structure (i.e., scanning the anatomical structure with an X-ray beam), the light field pattern can be configured to display all or at least part of the entire area traveled by the X-ray beam during the scan, instead of or in addition to displaying the position of the X-ray beam pattern at its initial position. In the case of a tomography scan, particularly a CBCT imaging mode, the area of ​​the anatomical structure indicated by the visible light emitting element 141' can be related to the volume of the anatomical structure covered by the given CT imaging mode using a given collimation setting for the X-ray beam.

[0069] use Figures 4a-4c In an arrangement such as that shown, it is not necessarily necessary, for example, for the light field pattern and the X-ray beam pattern to have exactly the same shape and size, depending on the context. On the one hand, the focal points or emission points of the diverging visible light and X-ray beams do not need to be at exactly the same distance from the X-ray detector 15, and their divergence angles do not need to be exactly the same. With respect to any differences that may exist, they can be taken into account when understanding the differences and the distances from the location where the patterns should substantially match (i.e., the surface of the anatomical structure). Such relevant information can be recorded in the control system of the device, and the pattern sizes can thus be configured to substantially correspond to each other in a given case.

[0070] Figures 4a-4cAn embodiment is shown in which the components X-ray source 14, X-ray beam collimator arrangement 142 and visible light emitting arrangement 141' are arranged to move as an integrated assembly, the embodiment including a control system of the construction apparatus to provide information on the size and shape of the light field pattern being generated to the X-ray beam collimator arrangement 142, or vice versa, an alternative arrangement is to implement only the X-ray source 14 and light field indicator 141 as fixed components, which would then be arranged to move relative to the collimator arrangement 142. In such an embodiment, the collimator arrangement 142 can be used to confine both the visible light beam and the X-ray beam.

[0071] As for the accuracy of the correspondence between beam size and shape or field pattern size and shape, in some respects it is more critical to have them closely match each other when taking a single 2D radiograph using an imaging device than when taking a 3D tomographic image.

[0072] refer to Figure 5 According to one aspect, the support structure 12 includes an annular gantry housing 121 that houses i) at least one guide structure 50; and optionally also ii) a drive mechanism 16, which is arranged to move the X-ray imaging assemblies 14, 15 around a virtual or physical rotation axis 13, while the X-ray source 14 and the image detector 15 are arranged to be positioned outside the annular gantry housing 121 or extend outside the annular gantry housing 121.

[0073] According to one embodiment, the X-ray source 14 and / or the X-ray detector 15 may include a housing for the X-ray source 14 and / or the X-ray detector 15, which is designed and dimensioned so that in all positions within the lateral range of motion of at least any one of the X-ray source 14 and the X-ray detector 15, the housing covers the opening 59 through which the mounting bracket 58 extends.

[0074] According to one aspect, when there is more than one guide structure 50, they can include the same number of components having the same function to form a similar functional assembly. As an example, the guide structures can be the same, while the mounting brackets 58 can optionally be different, such as specifically adapted for the x-ray source 14 and the image detector 15.

[0075] According to one aspect, the housing 121 of the support structure 12 does not enclose the X-ray source 14 and the X-ray detector 15, but serves primarily or solely as a housing for, for example, a ring-shaped gantry 122 on which the X-ray source 14 and the X-ray detector 15 are mounted and for a structure arranged to be attached to the device for driving the X-ray source 14 and the X-ray detector 15 about the rotation axis 13. The support structure 12 can be made lighter and provide the possibility of better access for patients and personnel to the imaging volume between the X-ray source 14 and the X-ray detector 15. Such a solution can also make it easier for personnel to have a clear line of sight at the imaging volume within the housing 121, where the patient will be positioned for exposure.

[0076] Go to Figure 6 , which shows certain parts of an embodiment by way of example and as a schematic overall side view, wherein, in addition to the part discussed above, which can be called the first slender frame part 11, there is also a second slender frame part 21 having a length substantially the same as the length of the first slender frame part 11, which is mechanically connected to the first slender frame part 11.

[0077] According to one aspect and still with reference to Figure 6 A hinged connection structure 22 is arranged near the first ends of the slender frame portions 11, 12 to mechanically connect the first slender frame portion 11 and the second slender frame portion 21 to allow the first slender frame portion 11 to be tilted about at least one tilt axis relative to the second slender frame portion 21. The axis of the at least one tilt axis can be an axis that is orthogonal to the direction along which the first slender frame portion 11 and the second slender frame portion 21 extend and the direction along which the support structure 12 for the X-ray imaging assemblies 14, 15 extends (perpendicular to the first longitudinally extending frame portion 11).

[0078] exist Figure 6 In the embodiment shown, at least one tilt axis is horizontal.

[0079] According to another aspect, on one side of the second elongated frame portion 21, Figure 6 A mounting structure 23, not directly visible in the drawing, is arranged in connection with the hinged connection 22. The mounting structure 23 is arranged to be movable along or beside the second elongated frame portion 21.

[0080] According to another aspect, for example, a locking mechanism 24 is disposed near the second end of the second elongated frame portion 21, the locking mechanism 24 being configured to connect and disconnect the first elongated frame portion 11 and the second elongated frame portion 21. In particular, the locking mechanism 24 may be disposed near the second ends of the first elongated frame portion 11 and the second elongated frame portion 21 and configured to connect and disconnect the first elongated frame portion 11 and the second elongated frame portion 21 near the second ends of the first elongated frame portion 11 and the second elongated frame portion 12.

[0081] When the second elongated frame portion 21 is stably mounted and the locking mechanism 24 does not connect the first elongated frame portion 11 and the second elongated frame portion 21, the second end of the first elongated frame portion 11 is free to move laterally, while the hinged connection 22 between the frame portions 11, 21 near the first end of the first elongated frame portion 11 allows the first elongated frame portion 11 to rotate about the horizontal tilt axis. In the vertical starting position, this movably arranged mounting structure as described above allows the first end of the first elongated frame portion 11 to be lowered and raised.

[0082] While the construction allowing the first elongated frame portion 11 to tilt and allowing the first end of the first elongated frame portion 11 to descend and ascend, as well as the construction of the locking mechanism 24 discussed above, can vary, such an example is disclosed in more detail in co-pending patent application FI20190054, which is incorporated herein by reference.

[0083] Figure 6 The apparatus is shown in a stage where the first end of the first elongated frame portion 11 has moved downwardly and the second end of the first elongated frame portion 11 has moved horizontally over a surface. Figure 6 The apparatus may be configured to allow the first end of the first elongated frame portion 11 to be lowered all the way to near the second end of the second elongated frame portion 21 .

[0084] According to Figure 6 In another aspect not directly visible in the drawings, the drive mechanism 27 is arranged in functional connection with the second elongated frame portion 21 to drive the mounting structure 23 along or beside the second elongated frame portion 21. When the drive mechanism 27 is mechanically connected to the first elongated frame portion 11, near the first end of the first elongated frame portion 11, the drive mechanism 27 can move the first end of the first elongated frame portion 11 in the direction along which the second elongated frame portion 21 extends.

[0085] The drive mechanism 27 for driving the mounting structure 23 may be of similar construction to the drive mechanism 17 for driving the support structure 12 of the X-ray imaging assemblies 14 , 15 along or beside the first elongated frame portion 11 .

[0086] According to one aspect, the drive mechanism 27 for driving the mounting structure 23 comprises a chain drive.

[0087] Figure 7 is a schematic overall view of a device extending in the horizontal direction as an example. Figure 7 Not shown, but the apparatus may include a combination of Figure 6 The configuration in question allows for changing the direction in which the elongated frame portion 11 extends. Figure 7 The support structure 12 for the X-ray imaging components 14 and 15 is Figure 7 The support structure is not similar, but Figure 7 Certain components of the apparatus are also shown being driven to positions other than their home position.

[0088] That is, with respect to, for example, entering and exiting the containment area between the X-ray source 14 and the X-ray detector 15, Figure 8a 1 shows how certain components of the apparatus can be moved to various positions within their provided range of motion. According to this embodiment, while the embodiments of the present invention discussed above enable lateral movement of at least one of the X-ray source 14 and the X-ray detector 15 to facilitate patient entry and exit from the interior of the support structure 12 for the X-ray imaging assemblies 14, 15, another similarly configured structure or another similarly functional structure can be arranged in the apparatus to also enable lateral movement of the support structure 12 for the X-ray imaging assemblies 14, 15 themselves relative to the elongated frame portion 11. By incorporating such a linear motion mechanism 50' into the apparatus, for example, even more room can be provided for the patient to enter the imaging area and then be correctly positioned for exposure.

[0089] Therefore, according to one aspect, the apparatus further comprises a linear motion mechanism 50' arranged to enable the support structure 12 for the X-ray imaging assembly to move relative to the longitudinally extending frame portion 11 in a direction at right angles to the direction in which the longitudinally extending frame portion 11 extends. The linear motion range of the support structure 12 includes a base position relative to the first longitudinally extending frame portion 11 and first and second extreme positions.

[0090] When the support structure 12 for X-ray imaging components 14 and 15 extends in a direction at right angles to the longitudinally extending frame part 11, the linear motion mechanism 50' causes the support structure 12 for X-ray imaging components 14 and 15 to move relative to the longitudinally extending frame part 11 in a direction also at right angles to this direction.

[0091] Regarding the base position provided by the linear motion mechanism 50 ′ of the support structure 12 for the X-ray imaging assemblies 14 , 15 , in an embodiment, either the first extreme position or the second extreme position may be the base position. Regarding the guide structure 50 for at least the X-ray source 14 , the same applies.

[0092] According to yet another aspect and as Figure 8b As shown, the connection structure 19, 20 that mechanically connects the patient support 18 to the slender frame part 11 may include a patient support adjustment mechanism 19', 20', which is configured to enable the patient support 18 to be shifted closer to and further away from the (first) slender frame part 11.

[0093] According to another aspect, the patient support drive mechanism 19 ″, 20 ″ is arranged in functional connection with the patient support adjustment mechanism 19 ′, 20 ′.

[0094] According to another aspect, the patient support adjustment mechanism 19', 20' may include: a first adjustment mechanism 19' included in a patient support drive mechanism 19", 20" substantially located at a first end of the elongated frame portion 11, the first adjustment mechanism 19' being arranged together with its drive mechanism 19"; and a second adjustment mechanism 20' included in a patient support drive mechanism 19", 20" substantially located at a second end of the elongated frame portion 11, the second adjustment mechanism 20' being arranged together with its drive mechanism 20".

[0095] According to one aspect, for example, the patient support adjustment mechanisms 19 ′, 20 ′ are arranged in functional connection with a control system of the apparatus, and the control system is configured to control the patient support drive mechanisms 19 ″, 20 ″ of the patient support adjustment mechanisms 19 ′, 20 ′.

[0096] According to one aspect, for example, the control system is constructed to control connection structures 19, 20, which include: a first adjustment mechanism 19' and a drive mechanism 19" basically arranged at the first end of the (first) slender frame portion 11; a second adjustment mechanism 20' and a drive mechanism 20" basically arranged at the second end of the (first) slender frame portion 11, so as to keep the distance between the (first) slender frame portion 11 and the patient support 18 the same at the first end and the second end of the slender frame portion 11 when adjusting the distance between the (first) slender frame portion 11 and the patient support 18.

[0097] According to another aspect, the distance between the end of the (first) elongated frame portion 11 and the end of the patient support 18 can be adjusted to be different.

[0098] According to one aspect, Figure 8b As shown, considering the above-mentioned first orientation of the patient support 18 , the cross section of the main portion thereof is curved in order to better support the patient on the concave surface of the patient support 18 .

[0099] According to another aspect, Figure 8b As shown, at an edge 181 of the cross section of the patient support 18, the shape of the cross section becomes curved in the opposite direction.

[0100] According to another aspect and Figure 9 As further shown in FIG, a retaining structure 182 is disposed near an edge of the cross-section of the patient support 18 and on a side opposite the concave surface of the main portion thereof. The retaining structure 182 may be, for example, an elongated handle or attachment structure to receive a strap designed to extend over or on the concave side of the patient support 18 to provide further support to the patient and thereby help keep the patient still during imaging exposures.

[0101] According to an aspect, and generally as described above, various degrees of freedom of motion of components of the apparatus, including those that can be arranged for the patient support 18, can be utilized in positioning the patient, or more precisely, the anatomical structure for exposure. As an example, consider the case of a patient shoulder to be examined while the patient is lying on the patient support 18 as described above. One can first drive the patient support 18 to a height position that is most easily accessible to the patient for the patient support 18. Then, while the patient is lying on the patient support 18, at least one of the following positions can be adjusted: i) the height position of the patient support 18, ii) the horizontal position of the support structure 12 for the X-ray imaging assembly 14, 15; and iii) the position of at least one of the X-ray source 14 and the X-ray detector 15 within the range of lateral motion provided for it, so that the desired anatomical structure will be located in the field of view of the apparatus. Obviously, this is within the range of degrees of freedom of motion of the components of the apparatus arranged for it.

[0102] The structures according to embodiments enable arranging the apparatus for various patient access and positioning operations. They can also be used to perform imaging modalities that are non-rotational, e.g., in addition to, and apart from, the conventional type of CT imaging, but can deploy only linear motion of the X-ray imaging assembly. In particular, embodiments are applicable in environments where the anatomical structure is positioned for single 2D imaging exposure.

[0103] An operational mode such as the one discussed above can include, as a pre-exposure operation, driving the guide structure 50 for the X-ray source 14 in connection with the visible light emitting structure 141’ so that the visible light emitting structure 141’ will be moved to be positioned substantially at the base point position of the X-ray source 14, and the field pattern to be generated by the visible light emitting structure 141’ will be adjusted to have a default shape and size. The default shape and size can be set according to the imaging mode, which can be arranged to be selected from a user interface of the apparatus.

[0104] According to an embodiment, the selected imaging mode can include driving the X-ray source 14 and the X-ray detector 15 a distance from their base point positions. The apparatus can be structured to allow, following such a pre-exposure operation, adjusting the light field pattern, and thereby adjusting the size and / or shape of the X-ray beam to be used during the imaging exposure, according to characteristics of the given anatomical structure that is positioned for imaging.

[0105] In one embodiment, the device is equipped with one or more components adapted to determine the position and / or shape of an anatomical structure positioned for imaging, and a control system adapted to adjust the collimation of the x-ray beam and / or the visible light pattern projected on the anatomical structure using this knowledge. Techniques exist for determining the distance and shape of a surface in a coordinate system, as well as for transferring information from one coordinate system to another, in which case the geometry of the imaging device (and its associated components) is known and its relevance to the coordinate system used to determine the position and shape of the surface. In embodiments, instead of determining the shape of the anatomical surface, for example, simply the shortest distance from the same location to the anatomical surface may be determined.

[0106] Pre-exposure operations related to the relative positioning of the anatomical structure and the imaging assembly, and adjusting the size and shape of the X-ray beam according to a given imaging mode and even according to the anatomical structure to be imaged, can be applied in the context of various imaging modes arranged in the imaging device. Such operations can generally include a control system of the device, which includes geometric information about the relative positions of the X-ray source, the light-emitting structure 141', the X-ray detector, and / or the patient support, so that for a given light field pattern and the position at which it is projected, the control system includes corresponding collimation information for limiting the X-ray beam when the X-ray beam is emitted at a given position of the X-ray source in the context of the given imaging mode.

[0107] As an example, the operating mode may include a pre-exposure operation in which, before optionally driving the X-ray source 14 and the X-ray detector 15 from their base position, the guide structure 50 for the X-ray source 14 connected to the visible light emitting structure 141′ is driven so that the visible light emitting structure 141′ is moved to a substantially base position of the X-ray source 14 and the light field pattern generated by the visible light emitting structure 141′ is adjusted to a default shape and size. The default shape and size may be preset according to the imaging mode selected from the user interface of the device.

[0108] According to one embodiment, as an example, the selected imaging mode includes driving the X-ray source 14 and the X-ray detector 15 a distance from their base point positions. The apparatus can be configured to allow, after such pre-exposure operations, the light field pattern to be adjusted according to the characteristics of a given individual anatomical structure positioned for imaging, and thereby adjust the size and shape of the X-ray beam to be used during the imaging exposure.

[0109] With respect to a given patient access operation or patient access mode, according to one aspect, it includes positioning the visible light emitting construction 141 ′ at the same location where the X-ray source will be positioned during or at the beginning of a subsequent imaging exposure.

[0110] According to one aspect, the light field indicator 141 can then be configured to project a light beam having the same shape as the shape of the X-ray beam that the X-ray source 14 is configured to emit or is adjustable to emit. Such a light field indicator 141 can, for example, be mounted to the same guide structure 50 as the X-ray source 14 as a separate component from the X-ray source 14 so as to be movably mounted relative to the support structure 12. The range of motion of the guide structure 50 to which the X-ray source 14 and the light-emitting components can be mounted is then preferably configured such that the X-ray source 14 and the light-emitting structure 141' can be positioned at the same position within the range of motion provided by the guide structure 50. This configuration provides a novel apparatus by which one can project a positioning light pattern onto an object to be imaged from the same position at which the X-ray imaging exposure actually occurs or begins.

[0111] Figure 9 An example of components of a control system suitable for use in an apparatus according to the invention is shown in a block diagram. Figure 9 The control system is configured to enable the operation of the X-ray source 14 and the X-ray detector 15 (imaging devices or components) to be controlled during exposure. The components that control the operation of the X-ray source 14 and the X-ray detector 15 may include components that are physically arranged in the X-ray source 14 and / or the X-ray detector 15 and / or elsewhere in the device.

[0112] The control system may also be configured to control various drives of the apparatus, such as those that drive the one or more guide structures 50 and those that move the X-ray imaging assemblies 14, 15. Signal paths may also be arranged for controlling the components discussed above in relation to adjusting the shape and size of the field pattern and positioning those components relative to the support structure 12.

[0113] Figure 9 The control system also illustrates an optional feature for rotating the X-ray imaging assemblies 14, 15 and a patient access mode feature, which may include controlling at least one of the drive devices described above.

[0114] ​ The figure further shows a signal path to a mounting structure 23 as further discussed above, and where the apparatus includes a motorized locking mechanism 24 for connecting and disconnecting the first and second elongated frame portions 11, 21 as discussed above, the control system can also control actuation of the locking mechanism 24.

[0115] In summary, the control system may be arranged to control the operations as discussed above or parts thereof.The structure and functionality as discussed above provide various possibilities for conveniently positioning and performing imaging of a desired volume of a patient.

[0116] Control signals for various operations can be triggered in response to detected operations or input from a user interface of the device. The memory of the control system can include various relevant information about pattern shapes and sizes, as discussed above, as well as related control protocols, as discussed above, and protocols related to one or more entry and / or imaging modes.

[0117] While various embodiments have been discussed above, the apparatus of the present disclosure may be described as a dental or medical X-ray imaging apparatus comprising: an X-ray detector; an X-ray source configured to generate X-ray radiation and including a collimator structure, the collimator structure being functionally connected to the X-ray source, the collimator structure being configured to limit the X-ray radiation generated by the X-ray source 14 to a beam aimed in the direction of the X-ray detector and defining a field pattern of X-ray radiation; a light field indicator comprising a visible light emitting structure and configured to project a visible light field pattern aimed in the direction of the X-ray detector 15; and a control system including control information related to an imaging mode. The apparatus includes a support structure on which the X-ray source, the X-ray detector, and the visible light emitting structure are mounted, the support structure being configured to enable the X-ray source and the visible light emitting structure to be positioned at substantially the same position relative to the support structure so as to direct a given field pattern in substantially the same direction toward the X-ray detector when positioned at the substantially same position at a given time. In addition, the device may include a first frame portion extending in a first direction and including a first end and a second end, wherein a support structure on which an X-ray source, an X-ray detector and a visible light emitting structure are mounted extends from the first frame portion in a second direction substantially at right angles to the first direction.

[0118] To add to or summarize some of the features discussed above, embodiments may include that the support structure may include an annular structure that may include an annular frame and a housing that houses at least the annular frame.

[0119] Positioning the X-ray source and the visible light emitting construction at substantially the same location may include arranging the X-ray source and the visible light emitting construction to be movable in directions at right angles to both the first direction and the second direction.

[0120] The X-ray source, the collimator arrangement and the visible light emitting arrangement are arranged to be movable as a fixed assembly. Alternatively, the X-ray source and the visible light emitting arrangement may be arranged to be movable relative to the collimator arrangement as a fixed unit.

[0121] The light field indicator can be configured to generate a visible light field pattern such that the visible light field pattern is a substantially uniformly illuminated area, or includes a light field pattern that is combined to indicate an area. Furthermore, the light field indicator can be configured to project visible light field patterns of varying sizes and / or shapes, and the collimator structure can be configured to confine X-ray illumination field patterns of varying sizes and / or shapes.

[0122] The control system may include relevant information regarding the size of the visible light field pattern and the X-ray illumination field pattern at a given distance from the X-ray detector, and the light field indicator and the collimator are configured to adjust the size and / or shape of their respective field patterns based on the relevant information so that the field patterns cover substantially the same area at the given distance from the X-ray detector. In addition, or alternatively, the relevant information may include relevant information regarding a given imaging mode.

[0123] The given imaging mode may be a CBCT imaging mode, and the control system is configured to indicate, by means of a visible light field pattern, an area at a given distance from the X-ray detector 15 that is related to the volume covered for the given CBCT imaging mode and using a given collimation setting of the X-ray beam.

[0124] The apparatus may comprise one or more components configured to determine the position and / or shape of an anatomical structure positioned for imaging, and the control system may then be configured to adjust the X-ray beam collimation and / or the visible light pattern projected onto the anatomical structure using this knowledge, the position and / or shape then defining a given distance from the X-ray detector 15.

[0125] The control system can also be configured to receive information about the characteristics of the visible light pattern projected by the light field indicator from the light field indicator, and convert the information about the characteristics of the received visible light pattern into information on how to control the operation of the collimator structure to adjust the X-ray irradiation field pattern to at least substantially correspond to the size and shape of the area indicated by the projected visible light pattern.

[0126] The control system can also be configured to receive information about the characteristics of the X-ray exposure field pattern limited by the collimator structure from the collimator structure, and convert the received information about the characteristics of the X-ray exposure field pattern into information about how to control the operation of the light field indicator 141 to adjust the visible light field pattern to a size and shape that at least substantially corresponds to the X-ray exposure field pattern.

[0127] The apparatus can include a first guide construction mounted to the support construction, and the X-ray source and the visible light emitting construction are mounted together as a fixed unit, the first guide construction being configured to enable movement of the fixed unit, the range of movement of the fixed unit including a base point position, a first limit position and a second limit position. The first guide construction can include a carriage mounted to the fixed unit including the X-ray source and the visible light emitting construction, the range of movement of the carriage including a base point position, a first limit position and a second limit position.

[0128] The first guide construction can include at least one guide slot or rail on a side of the support construction and a mating structure on a side of the carriage. On the other hand, the first guide construction can include a motorized construction functionally connected to the carriage, the motorized construction providing movement of the fixed unit including the X-ray source and the visible light emitting construction within a range including the first limit position and the second limit position. The first guide construction can further include a position sensor device configured to acquire information about the position of the fixed unit including the X-ray source and the visible light emitting construction within the range of movement, the position sensor device being configured to detect the position of the carriage within the range of movement of the carriage. The first guide construction can be configured to enable lateral movement of the fixed unit, and the motorized construction can include a drive screw aligned parallel to the at least one guide slot or rail and arranged in functional connection with the carriage.

[0129] The position sensor device can include a magnetic component structurally connected to the carriage and movably connected to a rod extending parallel to the at least one guide slot or rail and the drive screw of the guide construction.

[0130] A mounting bracket can be fixed to the carriage, on the other hand, a mounting bracket is fixed to the fixed unit including the X-ray source and the visible light emitting construction to mechanically connect the fixed unit to the guide construction.

[0131] A signal path is provided between the first guide construction and the control system. The signal path can include a signal path between the position sensor device and the control system.

[0132] A signal path can also be provided between the collimator construction 142 and the control system and between the light field indicator and the control system to enable control of the collimator construction 142 and the light field indicator in accordance with the relevant information.

[0133] The ring-shaped structure can include a ring-shaped gantry that also houses the first guide arrangement. The housing can further include a surface having at least one opening through which the X-ray source is mounted by passing the mounting bracket through the at least one opening, wherein the at least one opening is sized to allow a range of motion of the X-ray source guided by the guide arrangement.

Claims

1. A medical X-ray imaging device, comprising: X-ray detector (15); an X-ray source (14) configured to generate X-ray radiation and comprising a collimator configuration (142) functionally connected to the X-ray source (14), the collimator configuration (142) configured to confine the X-ray radiation generated by the X-ray source (14) to a beam that is aimed in the direction of the X-ray detector (15) and defines a field pattern of the X-ray radiation; a light field indicator (141) comprising a visible light emitting structure (141') and configured to project a visible light field pattern aimed in the direction of the X-ray detector (15); a control system including control information related to an imaging mode; The device is characterized in that the device includes a support structure (12), the X-ray source (14), the X-ray detector (15) and the visible light emitting structure (141') are mounted on the support structure, and wherein the support structure (12) is constructed to be able to move the X-ray source (14) and the visible light emitting structure (141') to be respectively positioned at the same position relative to the support structure (12), so that when located at the same position at a given time, the X-ray irradiation field pattern and the visible light field pattern are respectively directed to the X-ray detector (15) in substantially the same direction, and the device also includes a first frame portion (11) extending in a first direction and including a first end and a second end, wherein the support structure (12) on which the X-ray source (14), the X-ray detector and the visible light emitting structure (141') are mounted extends from the first frame portion (11) in a second direction substantially at right angles to the first direction.

2. The device according to claim 1, characterized in that The support structure (12) comprises an annular structure, and the annular structure comprises an annular frame (122) and a shell (121) that at least accommodates the annular frame (122).

3. The device according to claim 1, characterized in that Positioning the X-ray source (14) and the visible light emitting structure (141') at the same position relative to the support structure (12) includes: arranging the X-ray source (14) and the visible light emitting structure (141') to be movable in a direction at right angles to both the first direction and the second direction.

4. The device according to any one of claims 1 to 3, characterized in that The X-ray source (14), the collimator structure (142) and the visible light emitting structure (141') are arranged to be movable as fixed components.

5. The device according to any one of claims 1 to 3, characterized in that The X-ray source (14) and the visible light emitting structure (141') are arranged to be movable relative to the collimator structure (142) as a fixed unit.

6. The device according to any one of claims 1 to 3, characterized in that The light field indicator (141) is configured to generate a visible light field pattern such that the visible light field pattern is a substantially uniformly illuminated area, or includes a light field pattern that indicates an area as a combination.

7. The device according to any one of claims 1 to 3, characterized in that The light field indicator (141) is configured to project visible light field patterns of different sizes and / or different shapes, and the collimator structure (142) is configured to limit X-ray irradiation field patterns of different sizes and / or different shapes.

8. The device according to any one of claims 1 to 3, characterized in that The control system includes relevant information related to the size of the visible light field pattern and the X-ray irradiation field pattern at a given distance from the X-ray detector, and the light field indicator (141) and the collimator structure (142) are constructed to be able to adjust the size and / or shape of the visible light field pattern and the X-ray irradiation field pattern according to the relevant information, so that the visible light field pattern and the X-ray irradiation field pattern cover substantially the same area at a given distance from the X-ray detector (15), and / or the relevant information includes relevant information related to a given imaging mode.

9. The device according to claim 8, characterized in that The given imaging mode is a CBCT imaging mode, and the control system is configured to be able to indicate, by means of the visible light field pattern, an area at a given distance from the X-ray detector (15) that is related to a volume covered for the given CBCT imaging mode and using a given collimation setting of the X-ray beam.

10. The device according to claim 8, characterized in that The apparatus comprises one or more components configured to determine a position and / or shape of an anatomical structure for imaging, and the control system is configured to be capable of adjusting the X-ray beam collimation and / or the visible light field pattern projected on the anatomical structure, the position and / or shape defining the given distance from the X-ray detector (15).

11. The device according to any one of claims 1 to 3, characterized in that The control system is constructed to receive information about the characteristics of the visible light field pattern projected by the light field indicator from the light field indicator (141), and convert the received information about the characteristics of the visible light field pattern into information on how to control the operation of the collimator structure (142) to adjust the X-ray irradiation field pattern to at least substantially correspond to the size and shape of the area indicated by the projected visible light field pattern, and / or the control system is constructed to receive information about the characteristics of the X-ray irradiation field pattern limited by the collimator structure from the collimator structure (142), and convert the received information about the characteristics of the X-ray irradiation field pattern into information on how to control the operation of the light field indicator (141) to adjust the visible light field pattern to at least substantially correspond to the size and shape of the X-ray irradiation field pattern.

12. The device according to any one of claims 1 to 3, characterized in that The device includes a first guiding structure (50) mounted to a supporting structure (12), wherein an X-ray source (14) and a visible light emitting structure (141') are mounted together as a fixed unit, and the first guiding structure (50) is configured to enable the fixed unit to move, and the range of motion of the fixed unit includes a base point position, a first extreme position and a second extreme position.

13. The device according to claim 12, characterized in that The first guiding structure (50) includes a bracket (51) mounted to the fixing unit including the X-ray source (14) and the visible light emitting structure (141'), and the range of motion of the bracket (51) includes a base point position, a first limit position, and a second limit position.

14. The device according to claim 13, characterized in that The first guide structure (50) includes at least one guide groove or guide rail (52) on one side of the support structure (12) and a matching structure (52') on one side of the bracket (51).

15. The device according to claim 14, characterized in that The first guiding structure (50) includes a motorized structure (53) functionally connected to the bracket (51), and the motorized structure (53) provides movement of the fixing unit including the X-ray source (14) and the visible light emitting structure (141') within a range including a first extreme position and a second extreme position.

16. The device according to claim 15, characterized in that The first guiding structure (50) includes a position sensor device (55), which is configured to obtain information related to the position of the fixing unit including the X-ray source (14) and the visible light emitting structure (141') within the range of motion, and the position sensor device (55) is configured to detect the position of the bracket (51) within the range of motion of the bracket (51).

17. The device according to claim 16, characterized in that The first guide structure (50) is configured to enable lateral movement of the fixing unit, and the motorized structure (53) includes a drive screw (54) aligned parallel to the at least one guide slot or guide rail (52) and arranged in functional connection with the bracket (51).

18. The device according to claim 17, characterized in that The position sensor device (55) comprises a magnetic component (56) which is structurally connected to the bracket (51) and movably connected to a rod (57) which extends parallel to the at least one guide slot or guide rail (52) of the first guide structure (50) and the drive screw (54).

19. The device according to claim 13, characterized in that The mounting bracket (58) is fixed to the bracket (51), and on the other hand, the mounting bracket (58) is fixed to the fixing unit including the X-ray source (14) and the visible light emitting structure (141') to mechanically connect the fixing unit to the first guide structure (50).

20. The apparatus according to claim 16, wherein A signal path is provided between the first guide configuration (50) and the control system, the signal path including a signal path between the position sensor device (55) and the control system.

21. The device according to claim 8, characterized in that Signal paths are provided between the collimator structure (142) and the control system and between the light field indicator (141) and the control system to control the collimator structure (142) and the light field indicator (141) according to relevant information.

22. The device according to claim 2, characterized in that The housing (121) includes a surface having at least one opening (59) for mounting at least an X-ray source (14) by passing a mounting bracket (58) through the at least one opening (59), wherein the at least one opening (59) is sized to allow a range of motion of the X-ray source (14) guided by a first guide structure (50) mounted to the support structure (12).

Images