X-ray imaging apparatus

Abstract

The present invention relates to the structure of a device applicable to use in particular dental or medical X-ray imaging. The device further comprises a support component (12) on which an X-ray source (14), an X-ray detector, and a visible light emitting component (141') are mounted, and the support component (12) is configured to enable positioning of the X-ray source (14) and the visible light emitting component (141') in essentially the same position relative to the support component (12), so that when positioned in essentially the same position at a given time, a given field pattern is directed toward the X-ray detector (15) in essentially the same direction. Additionally, the device comprises a first frame portion (11) extending in a first direction and including a first end and a second end, and the support component (12) on which the X-ray source (14), the X-ray detector, and the visible light emitting component (141') are mounted extends from the first frame portion (11) in a second direction that is essentially perpendicular to the first direction.

Description

Technology Field

[0001] The present invention relates to dental or medical radiography. In particular, the structure of the device according to the present invention can be applied to use in dental or medical X-ray imaging situations. Background Technology

[0002] When exposing living organisms to ionizing radiation to generate images of anatomical structures for medical purposes, imaging must be performed with the lowest possible radiation dose to acquire images of reasonable quality, taking into account the purpose of the imaging. The problem to be solved

[0003] One parameter that must be considered regarding radiation dose is the volume of the anatomical structure being exposed. When one does not want to irradiate unnecessary parts of the anatomical structure, one faces the problem of proper relative positioning of the desired structure and the components of the imaging device.

[0004] To facilitate such positioning, various positioning lights have been used, for example. Such lights can be configured to cast a laser line or light field onto the anatomical structure, for instance. In the context of radiography, the term light field-indicator is often used to refer to equipment included in an X-ray imaging system configured to "predict" the shape and dimensions of the irradiation field during subsequent exposure. Such systems may include components that remain between the X-ray source and the detector even during imaging exposure, whereas in some other systems, such components that would have remained between the X-ray source and the detector are moved away from the X-ray beam path prior to 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-dimensional or three-dimensional image can be reconstructed.

[0006] Traditional CT devices are large and massive, and are typically mounted on the floor. The patient is positioned for imaging within the device's examination opening, typically on an examination platform that extends horizontally and moves laterally.

[0007] For example, since the development of cone beam computed tomography (CBCT) technology, which uses slower rotational speeds for imaging means, devices with a weight less than that of more traditional CT devices have been developed. Among CBCT devices, there are some that are not designed to be mounted on the floor, for example, but are configured to be mobile.

[0008] Some recently designed CT devices are multi-purpose devices that support more than one imaging modality, such as those configured to enable both 2D and 3D radiography. However, as more functionality is added, the complexity of the device tends to increase, for example, as a result of placing new types of degrees of freedom of movement in one or more components of the device. Additionally, the weight of the device can increase, and at the same time, some modifications may introduce new problems related to positioning anatomical structures for exposure. means of solving the problem

[0009] The object of the present invention is a medical or dental X-ray imaging device, wherein in one specific embodiment, the device is a CBCT device, said device having novel features relating to the mutual positioning of an anatomical structure for imaging exposure and an imaging means of the device.

[0010] The characteristic features of the present invention are defined in claim 1. More specifically, such features include an apparatus of the present disclosure configured to enable a light field indicator system to cast a visible light field pattern from the same location where the X-ray beam generating system essentially emits an X-ray irradiation beam during imaging exposure.

[0011] The present invention is now described in more detail with reference to some of the preferred embodiments and the accompanying drawings. Brief explanation of the drawing

[0012] FIG. 1 is a general schematic side view illustrating, as an example, components of an imaging device applicable to include the features of the present disclosure. FIGS. 2a through 2c illustrate, by way of example, some structural details of an embodiment including a motorized guide configuration arranged and functionally connected to an X-ray source and an X-ray detector. FIG. 3 illustrates a guide configuration shown in FIG. 2a through 2c that is partially covered by a housing of a support configuration for an X-ray source (14) and an X-ray detector (15). FIGS. 4a to 4c illustrate a configuration for realizing the principle of projecting a visible light field pattern toward an X-ray detector from the same position as the position configured to essentially emit an X-ray beam during exposure, for example. FIG. 5 illustrates an embodiment in which an X-ray source and an X-ray detector are positioned and extended outside the housing of a support component for the X-ray source and the X-ray detector. FIG. 6 illustrates a general schematic side view of an embodiment similar to that shown in FIG. 1, arranged with elements that allow the orientation to be changed. FIG. 7 is a schematic diagram of a device in which a specific component is driven to a position other than the base position and is in a horizontal position. FIG. 8a illustrates some details of a patient support suitable for use in the device of the present disclosure as an example. FIG. 8b illustrates a cross-section of the patient support as an example. FIG. 9 is a block diagram illustrating an example of the features of the device's control system. Specific details for implementing the invention

[0013] A more complete understanding of the components, processes, and devices disclosed herein may be obtained by referring to the accompanying drawings. These drawings are schematic representations based merely on convenience and ease of explaining the disclosures and are therefore not intended to indicate the relative size and dimensions of the devices or their components, nor are they intended to define or limit the scope of exemplary embodiments.

[0014] While specific terms are used in the following description for clarity, they are intended to refer only to specific structures of embodiments selected for illustrative purposes in the drawings and are not intended to define or limit the scope of the disclosure. In the drawings and the following description, it should be understood that similar reference numerals refer to components of similar function.

[0015] Unless otherwise clearly indicated by the context, the singular form includes plural referents.

[0016] As used herein, the terms approximately, generally, and substantially are intended to include structural or numerical modifications that do not significantly affect the purpose of the element or number modified by these terms. For example, the term substantially may include a range of variation such as 25%, or 10%, or 0% from the mentioned relationship.

[0017] As used in the specification and claims, the term “comprising” may include embodiments that are “constituting” and “essentially constituting”. The terms “comprising,” “having,” “having,” “may,” “containing,” and variations thereof are intended to be open transitional phrases, terms, or words that require the presence of a named element / step and allow the presence of other elements / steps, as used herein.

[0018] FIG. 1 illustrates an apparatus comprising a longitudinally extended frame portion (11) that extends in a first direction and has a first end and a second end. From this longitudinally extended frame portion (11) or "elongated frame portion (11)", a supporting component (12) that supports an X-ray source (14) and an X-ray detector (15) (not shown in FIG. 1) extends in a second direction, and the second direction is substantially orthogonal to the first direction. The X-ray source (14) and the X-ray detector (15), which may be referred to together as an X-ray imaging assembly (14, 15) or a part thereof, may be mounted essentially opposite each other on the supporting component (12) for the X-ray source (14) and the X-ray detector (15), but in an embodiment of the present invention, their relative positions may be arranged to be adjustable.

[0019] It should be noted that the device of FIG. 1, which includes the structure as described above, is merely one example of a preferred embodiment in the context in which the present invention may be implemented. Other types of frames and support components, such as a "C-type arm" for supporting an X-ray source and an X-ray detector, may also be applicable as merely one example.

[0020] Although medical and dental X-ray imaging devices often include patient supports, FIG. 1 illustrates a specific type of patient support (18) structure mechanically connected to an elongated frame portion (11). Such patient support (18), which may be applied for use in various embodiments of the present invention, includes a surface extending substantially parallel to the elongated frame portion (11). And, while such patient support (18) is optional, in the specific embodiment of FIG. 1, the patient support (18) has essentially the same length as the elongated frame portion (11).

[0021] Although examples of how an X-ray source (14) and an X-ray detector (15) can be mounted on a support component (12) for an X-ray imaging assembly (14, 15) are presented when some of the other drawings of the present disclosure are further discussed below, FIG. 1 generally illustrates a support component (12) for an X-ray imaging assembly (14, 15) comprising a housing (121). The housing (121) may cover a ring-shaped gantry (122) on which the X-ray imaging assembly (14, 15) is mounted. In one embodiment, the housing (121) may be extended to completely cover the X-ray source (14) and the X-ray detector (15), and in another embodiment, the gantry housing (121) may cover the components that mount the X-ray source (14) and the X-ray detector (15) to the gantry (122), but may not cover the X-ray source (14) and the X-ray detector (15) themselves.

[0022] The X-ray source (14) and X-ray detector (15) may be arranged to be rotatable around a rotation axis (13). In one embodiment, the ring-shaped gantry (122) on which the X-ray source (14) and X-ray detector (15) are mounted is rotatable. In a specific configuration shown in FIG. 1, which illustrates a general schematic side view as described above, this rotation axis (13) may coincide with or be aligned with the central axis of the housing (121) and the ring-shaped gantry (122) of the support configuration (12) for the X-ray imaging assembly (14, 15) as described above.

[0023] Accordingly, according to one embodiment not directly illustrated in FIG. 1, for example, the device includes a driving mechanism (16) arranged to drive an X-ray source (14) and an X-ray detector (15) around a rotation axis (13). The rotation axis (13) may be a physical axis or a virtual rotation axis, as in the case of FIG. 1.

[0024] According to one embodiment, for example, the rotation axis (13) or rotation center of the X-ray source (14) and X-ray detector (15) coincides with the center axis (13) of the gantry (122) when driven along a curved path and thereby defining the position of the virtual rotation axis (13).

[0025] According to one embodiment, the rotation axis (13) is a momentary (optional virtual) rotation axis, and the position of this momentary rotation axis with respect to the center axis of the housing (121) and / or the ring-shaped gantry (122) of the support component (12) for the X-ray imaging assembly (14, 15) as described above may be arranged to change.

[0026] Rotation may be arranged to be performed by rotating the gantry (122) by any conventional mechanism known to a person skilled in the art. In one embodiment, a drive belt driven by at least one pulley is arranged to extend around the ring-shaped gantry (122). Such a configuration may enable the rotation of the gantry (122) over an angle well exceeding 360 degrees.

[0027] According to another embodiment, another driving mechanism (17) may be arranged in the device to enable the support component (12) for the X-ray imaging assembly (14, 15) to move back and forth in a direction substantially parallel to the direction in which the elongated frame portion (11) extends. According to one embodiment, the driving mechanism (17) may be arranged to move the support component (12) along or parallel to the elongated frame portion (11).

[0028] According to one embodiment, a driving mechanism (17) for driving a supporting component (12) in a direction substantially parallel to the direction in which the elongated frame portion (11) extends may include a motor arranged in the supporting component (12) for the X-ray imaging assembly (14, 15) itself.

[0029] Regardless of the details of the components of the driving mechanism (17) for driving the supporting component (12) along or alongside the elongated frame portion (11), in one embodiment, the components of the device allow the supporting component (12) to be driven along essentially the entire length between the first end and the second end of the elongated frame portion (11).

[0030] Referring to FIGS. 2a through 2c, FIGS. 2a through 2c illustrate, by way of example, some structural details of one possible embodiment that may be used to implement the present invention. In FIGS. 2a through 2c, a portion of the housing (121) of the support component (12) for the X-ray imaging assembly (14, 15) is removed, thereby allowing to see a guide component (50) that can be arranged to be functionally connected to at least the X-ray source (14) of the imaging assembly (14, 15). According to one embodiment, the guide component (50) is motor-driven.

[0031] FIGS. 2a through 2c illustrate two guide components (50) configured to enable the X-ray source (14) and the X-ray detector (15) to move laterally with respect to their support component (12) or to the gantry (122), but according to one embodiment, the guide components (50) are arranged only with respect to the X-ray source (14).

[0032] Lateral movement of the X-ray source (14) and / or X-ray detector (15) relative to the support member (12) or gantry (122) can be implemented to occur on a plane orthogonal to the axis of rotation (13) around which the X-ray source (14) and X-ray detector (15) are arranged to rotate.

[0033] According to one embodiment, for example, at least one guide component (50) as described herein is mounted on a ring-shaped gantry (122) arranged in a support component (12) that supports an X-ray imaging assembly (14, 15).

[0034] The range of movement provided by the guide component (50) may include a base position and first and second extreme positions located in opposite directions from the base position.

[0035] FIGS. 2a through 2c illustrate embodiments in which structurally identical guide components (50) are arranged for both the X-ray source (14) and the X-ray detector (15). For the sake of clarity in the drawings, the guide components (50) are depicted in different details, and since not all components are depicted in all drawings, each and all components are not presented in FIGS. 2a through 2c with their respective reference numerals.

[0036] According to one embodiment, for example, the guide component (50) includes at least a carriage (51) (shown in FIG. 2c) mounted on the X-ray source (14) to enable lateral movement of the X-ray source. The lateral movement range of the carriage (51) may include a base position and first and second extreme positions located opposite to the base position.

[0037] Additionally, according to one embodiment, at least one guide component (50) includes at least one guide groove or rail (52) on the side of the support component (12) or gantry (122) and a matching component (52') on the side of the carriage (51) (again, illustrated in FIG. 2c).

[0038] According to one embodiment, at least one guide component (50) may include a motor-driven component (53) functionally connected to a carriage (51), and the motor-driven component (53) provides lateral movement of at least the X-ray source (14) within the lateral movement range.

[0039] According to one embodiment, the motor-driven component (53) may include a drive screw (54) that is aligned parallel to at least one guide groove or rail (52) and functionally connected to the carriage (51). According to the embodiment illustrated in FIGS. 2a through 2c, the drive screw (54) is arranged to rotate via a belt (531) driven by a motor (532), but another component that rotates the drive screw (54) may be used instead.

[0040] According to another embodiment, the guide component (50) may include a position sensor array (55) configured to obtain information regarding the position of the X-ray source (14) and / or the X-ray detector (15) within a lateral movement range of at least one of the X-ray source (14) and the X-ray detector (15).

[0041] According to one embodiment, the position sensor array (55) may be configured to detect the position of the carriage (51) within the lateral movement range of the carriage (51).

[0042] According to one other embodiment, a signal path may be arranged between the control system of the device and at least one guide component (50).

[0043] According to one embodiment, the signal path may include a signal path between the position sensor array (55) and the control system of the device.

[0044] According to one embodiment, the position sensor array (55) is an absolute position sensor array (55).

[0045] According to one embodiment, the absolute position sensor array (55) may include a magnetic component (56) that is structurally connected to a carriage (51) and movably connected to a rod (57) that extends parallel to at least one guide groove or rail (52) and a driving screw (54).

[0046] According to one embodiment, the first longitudinal extension frame portion (11) is arranged to extend horizontally or to be moved to extend horizontally, and the motor-driven portion (53) of the guide portion (50) is arranged to self-hold with respect to both i) a position of at least one of the X-ray source (14) and the X-ray detector (15) within a lateral movement range and ii) a rotational position in which the first driving mechanism (16) is configured to move the X-ray source (14) and the X-ray detector (15) around a virtual or physical rotation axis (13).

[0047] According to one embodiment, the X-ray source (14) and the X-ray detector (15) extend from one same side of the ring-shaped gantry housing (121), while the corresponding particular side of the ring-shaped gantry housing (121) may otherwise include a closed surface, but an opening (59) for at least one of the X-ray source (14) and the X-ray detector (15) exists on such surface. The opening (59) may be dimensioned to allow a lateral range of movement of the X-ray source (14) and / or the X-ray detector (15) when guided by at least one guide component (50).

[0048] FIGS. 2c and FIGS. 3 illustrate an embodiment comprising a mounting bracket (58) configured to extend through an opening (59) within a gantry housing (121). The mounting bracket (58) may be secured to the carriage (51) on one side and to the X-ray source (14) and / or X-ray detector (15) on the other side. Mounting brackets (58) with different dimensions may be used. As another detail, generally with respect to the guide configuration, movement does not necessarily have to be lateral.

[0049] Referring to FIGS. 4a to 4c, a configuration including more light-emitting components compared to FIGS. 2a to 2c is illustrated. Alternatively, referring to the disclosure of the background art of the present invention, a light field indicator (141) including a visible light emitting component (141') configured to emit a visible light field pattern is illustrated.

[0050] In the exemplary configurations of FIGS. 4a to 4c, the visible light emitting component (141') is arranged to be fixedly positioned on the collimator component (142) of the X-ray source (14), and these three components are arranged to be movable together as a fixed assembly. The movement of the assembly can be realized, for example, by a guide component (50) of the type described above.

[0051] The light emission component (141') may also, alternatively, be attached directly to the X-ray source (14) (housing of), or attached elsewhere to the frame structure of the collimator component (142) which is attached to or functionally connected to the X-ray source (14).

[0052] In the configuration as illustrated in FIGS. 4a through 4c, the visible light emission component (141') may be configured to project different light field patterns with respect to its shape and size. Preferably, the X-ray beam collimator component (142) has essentially the same shape and / or size, configured to confine the X-ray beam.

[0053] Accordingly, when considering the use of the above components, an array as shown in FIGS. 4a through 4c, comprising an X-ray source (14), a collimator component (142), and a visible light emission component (141'), can be moved to the position according to FIG. 4a before imaging exposure, so that the visible light emission component (141') is essentially located at the same position where the X-ray source is located in FIG. 4b, that is, at the position where the X-ray beam will be emitted during imaging exposure.

[0054] In other words, and more generally, the supporting component (12) having the X-ray source (14) and the X-ray detector can be configured to enable the X-ray source (14) and the visible light emission component (141') to be positioned in essentially the same location, so that when the X-ray source and the visible light emission component are positioned in essentially the same location at a given time, a given field pattern can be directed toward the X-ray detector (15) in essentially the same direction.

[0055] Accordingly, the configuration as illustrated in FIGS. 4a to 4c enables a procedure to first drive a visible light emitting configuration (141') at a position according to FIG. 4a, for example, position an anatomical structure to be imaged within the imaging area of ​​the device, and then adjust the light field pattern according to a given imaging mode to be applied and according to that specific individual anatomical structure to cast onto the anatomical structure.

[0056] This procedure may further include a control system of the device comprising information regarding the interrelationship between the dimensions of the X-ray beam collimation and the dimensions of the light field pattern cast toward the X-ray detector (15), so that the dimensions of the visible light and X-ray irradiation beams near the X-ray detector (15) correspond substantially to each other, or, in other words, the dimensions of the visible light pattern and the X-ray irradiation field pattern at a given distance from the X-ray detector (15) correspond substantially to each other.

[0057] According to one embodiment, information regarding the size and shape of a visible light pattern is provided for controlling an X-ray beam collimator, and the components or components of the collimator component (142) are moved to range the opening, and thus when the X-ray source (14) is moved to a position substantially corresponding to the position where the visible light pattern was projected onto the anatomical structure, the shape and size of the X-ray beam pattern striking the anatomical structure will at least substantially correspond to the shape and size of the light pattern.

[0058] According to another embodiment, the adjustment of the optical field pattern occurs through the control of the collimator component (142), and when the opening limited by the collimator component (142) is adjusted, the shape and size of the optical field pattern are adjusted accordingly based on the cross-relationship information recorded in the control system of the device. That is, in this embodiment, since the control can occur through the control of the collimator component (142), a separate input means for adjusting the optical field pattern is not required.

[0059] In all of the above embodiments, the control system of the device may include information regarding which types of X-ray beams and optical field patterns correspond to each other under a given situation, such as the situation of a given imaging mode to be applied. Additionally, the imaging mode may be, for example, imaging a specific anatomical structure from a specific direction, which generally means that the surface of the anatomical structure will be located at roughly the same distance from the X-ray detector (15) and thus at roughly the same distance from the X-ray source (14) and the light-emitting component (141) when positioned at the corresponding same location within the support component (12). When the imaging mode involves rotation of the anatomical structure, i.e., scanning the anatomical structure by an X-ray beam, the optical field pattern may be configured to show all or at least a portion of the entire area to which the X-ray beam will move during the scan, instead of showing the position of the X-ray beam pattern at the initial position of the X-ray beam, or in addition to it. In the case of tomography and especially CBCT imaging modes, the area of ​​the anatomical structure indicated by the visible light emission component (141') may be related to the volume of the anatomical structure to be covered by the given CT imaging mode when using the given collimation setting of the X-ray beam.

[0060] For example, when using the type of array shown in FIGS. 4a through 4c, it is not necessarily required to have light field patterns and X-ray beam patterns of exactly the same shape and size depending on the situation. For example, the focal point or emission point of the emitting visible light and X-ray beam does not need to be located at exactly the same distance from the X-ray detector (15), and its angle of divergence does not need to be exactly the same. Regarding any differences that may exist, the difference and the distance to the location (i.e., the surface of the anatomical structure) where the pattern is to be essentially matched can be taken into account. This information on the relationship can be recorded in the control system of the device, so that the pattern dimensions can be configured to essentially correspond to each other under a given situation.

[0061] FIGS. 4a through 4c illustrate an embodiment in which the components, an X-ray source (14), an X-ray beam collimator component (142), and a visible light emission component (141'), are arranged to move as an integrated assembly, but this embodiment includes configuring the control system of the device to provide information on the size and shape of the generated light field pattern to the X-ray beam collimator component (142) or vice versa, and an alternative arrangement realizes only the X-ray source (14) and the light field indicator (141) as a fixed assembly, which will subsequently be arranged to move relative to the collimator component (142). In such an embodiment, the collimator component (142) may be used to limit both the visible light beam and the X-ray beam.

[0062] Regarding the accuracy of the correspondence between beam size and shape, or field pattern size and shape, when compared to 3D tomographic imaging, it is more important in terms of a specific modality to match them closely with each other when using an imaging device to take a single 2D radiograph.

[0063] Additionally, referring to FIG. 5, according to one embodiment, the support member (12) comprises a ring-shaped gantry housing (121) that accommodates i) at least one guide member (50) and optionally ii) a driving mechanism (16) arranged to move an X-ray imaging assembly (14, 15) around a virtual or physical rotation axis (13), while the X-ray source (14) and image detector (15) are arranged to be positioned and extend outside the ring-shaped gantry housing (121).

[0064] According to one embodiment, the X-ray source (14) and / or X-ray detector (15) may include a housing for the X-ray source (14) and / or X-ray detector (15), which is designed and dimensioned so that the housing covers an opening (59) through which a mounting bracket (58) extends at all positions within the lateral movement range of at least one of the X-ray source (14) and the X-ray detector (15).

[0065] According to one embodiment, where there is more than one guide component (50), they may include the same number of components having the same function to form an assembly that functions similarly. For example, the guide components may be identical, while optionally the mounting bracket (58) may be different to be specifically adapted to the X-ray source (14) and the image detector (15).

[0066] According to one embodiment, when the housing (121) of the support component (12) does not house the X-ray source (14) and the X-ray detector (15), and functions primarily or solely as a housing for 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 in a device to drive the X-ray source (14) and the X-ray detector (15) around a rotation axis (13), the support component (12) can be realized to be lighter and to provide better access to the imaging volume between the X-ray source (14) and the X-ray detector (15). Additionally, this embodiment can make it easier for a staff member to have a clear view of the imaging volume inside the housing (121) where the patient is to be positioned for exposure.

[0067] Referring to FIG. 6, which illustrates a specific component of one embodiment as an example and as a general schematic side view, in addition to the first elongated frame portion (11) described above, there is a second elongated frame portion (21) mechanically connected to the first elongated frame portion (11) and having essentially the same length as the first elongated frame portion (11).

[0068] According to one embodiment, and continuing with reference to FIG. 6, an articulated connecting member (22) for mechanically connecting the first and second elongated frame members (11, 21) is arranged near the first end of the elongated frame members (11, 12) to allow tilting of the first elongated frame member (11) around at least one tilt axis for the second elongated frame member (21). This at least one tilt axis may be an axis orthogonal to the direction in which the first and second elongated frame members (11, 21) extend, as well as to the direction in which the supporting member (12) for the X-ray imaging assembly (14, 15) extends vertically from the first longitudinally extended frame member (11).

[0069] In the embodiment illustrated in FIG. 6, at least one inclined axis is horizontal.

[0070] According to another embodiment, a mounting structure (23), not directly illustrated in FIG. 6, is arranged on the side of the second elongated frame portion (21) in relation to an articulated connection component (22). The mounting structure (23) is arranged to be movable along or alongside the second elongated frame portion (21).

[0071] According to another embodiment, for example, a locking mechanism (24) configured to enable the connection and disconnection of the first and second elongated frame parts (11, 21) is arranged near the second end of the second elongated frame part (21). In particular, the locking mechanism (24) may be arranged near the second end of the first and second elongated frame parts (11, 21) and may be configured to enable the first and second elongated frame parts (11, 21) to be connected and disconnected together near the second end of the first and second elongated frame parts (11, 21).

[0072] When the second elongated frame portion (21) is stably mounted and the locking mechanism (24) does not connect the first and second elongated frame portions (11, 21), the second end of the first elongated frame portion (11) moves freely laterally, while the articulated connecting portion (22) between the frame portions (11, 21) allows the first elongated frame portion (11) to rotate around a horizontal inclined axis near the first end of the first elongated frame portion (11). In the case of a vertical starting position, such a movably arranged mounting structure allows the first end of the first elongated frame portion (11) to descend and ascend.

[0073] The components that allow the inclination of the first elongated frame portion (11) and the lowering and raising of the first end of the first elongated frame portion (11), as well as the components of the aforementioned locking mechanism (24), may vary, and examples thereof are disclosed in more detail in pending patent application FI 20190054 incorporated herein by reference.

[0074] FIG. 6 illustrates a device on a stage in which the first end of the first elongated frame portion (11) is moved downward and the second end of the first elongated frame portion (11) is moved horizontally on a surface. The device of FIG. 6 may be configured to allow the first end of the first elongated frame portion (11) to descend completely to the vicinity of the second end of the second elongated frame portion (21).

[0075] According to another embodiment not directly illustrated in FIG. 6, the driving mechanism (27) is arranged to be functionally connected to the second elongated frame portion (21) to drive the mounting structure (23) along or alongside the second elongated frame portion (21). When mechanically connected to the first elongated frame portion (11) and near its first end, the driving mechanism (27) can move the first end of the first elongated frame portion (11) in the direction in which the second elongated frame portion (21) extends.

[0076] The driving mechanism (27) driving the mounting structure (23) may be a component similar to the driving mechanism (17) driving the supporting component (12) of the X-ray imaging assembly (14, 15) along or alongside the first elongated frame portion (11).

[0077] According to one embodiment, the driving mechanism (27) driving the mounting structure (23) includes a chain drive unit.

[0078] FIG. 7 is, by way of example, a general schematic diagram of a device extending in a horizontal direction. Although not shown in FIG. 7, the device may include a configuration as described in relation to FIG. 6 that allows the elongated frame portion (11) to change the direction in which it extends. While the support component (12) for the X-ray imaging assembly (14, 15) of FIG. 7 is not similar to the support component of FIG. 6, FIG. 7 illustrates a specific component of the device driven to a position other than its base position.

[0079] That is, for example, regarding the mode of access to the volume between the X-ray source (14) and the X-ray detector (15), FIG. 7 illustrates a method in which a specific component of the device can be moved to various positions within a range of movement arranged for this purpose. According to the corresponding embodiment, the aforementioned embodiment for moving at least one of the X-ray source (14) and the X-ray detector (15) laterally can be used to facilitate patient access within the support component (12) for the X-ray imaging assembly (14, 15), but other similarly configured components or other similarly functioning components can be arranged in the device to also move the support component (12) for the X-ray imaging assembly (14, 15) itself laterally relative to the elongated frame portion (11). By incorporating such a linear movement mechanism (50') into the device, for example, much more space can be provided so that the patient can be properly positioned for exposure after entering the imaging area.

[0080] Accordingly, according to one embodiment, the device further includes a linear movement mechanism (50') arranged to enable the support component (12) for the X-ray imaging assembly to move relative to the longitudinal extension frame component (11) in a direction perpendicular to the direction in which the longitudinal extension frame component (11) extends. The linear movement range of the support component (12) may include a base position and first and second extreme positions relative to the first longitudinal extension frame component (11).

[0081] When the support component (12) for the X-ray imaging assembly (14, 15) is extended in a direction perpendicular to the longitudinal extension frame portion (11), the direction in which the linear movement mechanism (50') moves the support component (12) for the X-ray imaging assembly (14, 15) relative to the longitudinal extension frame portion (11) is also perpendicular to that direction.

[0082] With respect to the base position provided by the linear movement mechanism (50') for the support component (12) for the X-ray imaging assembly (14, 15), in the embodiment, either the first and second extreme positions may be the base position. The same applies to at least the guide component (50) for the X-ray source.

[0083] According to another embodiment and as illustrated in FIG. 8a, a connecting component (19, 20) that mechanically connects the patient support member (18) to the elongated frame portion (11) may include a patient support adjustment mechanism (19', 20') configured to enable the patient support member (18) to be displaced closer to and further away from the (first) elongated frame portion (11).

[0084] According to another embodiment, the patient support driving mechanism (19", 20") is functionally connected to and arranged with the patient support adjusting mechanism (19', 20').

[0085] According to another embodiment, the patient support adjustment mechanism (19', 20') may include a first adjustment mechanism (19') arranged together with its driving mechanism (19") contained within the patient support driving mechanism (19", 20") at a first end of substantially the elongated frame portion (11), and a second adjustment mechanism (20') arranged together with its driving mechanism (20") contained within the patient support driving mechanism (19", 20") at a second end of substantially the elongated frame portion (11).

[0086] According to one embodiment, for example, a patient support adjustment mechanism (19', 20') is functionally connected to a control system of the device and configured to control a patient support driving mechanism (19", 20") of the patient support adjustment mechanism (19', 20').

[0087] According to one embodiment, for example, the control system controls a connecting component (19, 20) comprising a first adjusting component (19') having a driving component (19") substantially arranged at the first end of the (first) elongated frame portion (11) and a second adjusting component (20') having a driving component (20") substantially arranged at the second end of the (first) elongated frame portion (11) so as to maintain the same distance between the (first) elongated frame portion (11) and the patient support portion (18) at the first and second ends of the elongated frame portion (11) when adjusting the distance between the elongated frame portion (11) and the patient support portion (18).

[0088] According to another embodiment, the distance between the end of the (first) elongated frame part (11) and the patient support part (18) can be adjusted to be different.

[0089] According to one embodiment, as illustrated in FIG. 8b, considering the aforementioned first direction of the patient support member (18), the cross-section of the main part of the patient support member is curved to better support the patient on the concave surface of the patient support member (18).

[0090] According to one other embodiment, as shown in FIG. 8b, at the edge (181) of the cross-section of the patient support (18), the shape of the cross-section is converted to be curved in the opposite direction.

[0091] According to one other embodiment and as further illustrated in FIG. 8b, a retaining structure (182) is arranged near the edge of the aforementioned cross section of the patient support (18) and on the side facing the concave surface side of its main part. The retaining structure (182) may be, for example, an elongated handle or attachment structure for receiving a strap designed to extend over or on the concave side of the patient support (18), and may be used to provide additional support to the patient and thereby help to maintain a stationary state during imaging exposure.

[0092] According to one embodiment, and as already generally described above, various degrees of freedom of movement of the components of the device, including those that can be arranged relative to the patient support (18), can be utilized when positioning the patient, or more precisely, the anatomical structure for exposure. For example, considering the situation of the patient's shoulder to be examined while lying on the patient support (18) similar to what has been described above, the patient support (18) can first be driven so that the patient is positioned at the height position where it is easiest for the patient to board the patient support (18). Thereafter, when the patient is lying on the patient support (18), at least one of i) the height position of the patient support (18), ii) the horizontal position of the support component (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 lateral movement range provided for at least one of the X-ray source (14) and the X-ray detector (15) can be adjusted so that the desired anatomical structure is located within the field of view of the device. Clearly, this is within the limits of the degrees of freedom of movement of the components of the device arranged for this purpose.

[0093] The structure according to the embodiment enables various patient entry and positioning operations to be placed in the device. Additionally, it can be used to perform, for example, things other than traditional types of CT imaging, and in addition to CT imaging, imaging modes having only linear movement and no rotation of the X-ray imaging assembly can also be appropriately used. Specifically, the embodiment can be applied in relation to positioning anatomical structures for individual 2D imaging exposure.

[0094] The operation mode described above may include, as a pre-exposure operation, driving a guide component (50) for an X-ray source (14) to which the visible light emission component (141') is connected so that the visible light emission component (141') is moved to essentially be positioned at the base position of the X-ray source (14), and adjusting the field pattern generated by the visible light emission component (141') to a default shape and size. The default shape and size may be set according to an imaging mode that can be arranged to be selected from the user interface of the device.

[0095] According to one embodiment, the selected imaging mode may include driving an X-ray source (14) and an X-ray detector (15) to a predetermined distance from their base position. The device may be configured to allow, after such pre-exposure operation, to draw a light field pattern according to the characteristics of a given anatomical structure positioned for imaging and accordingly adjust the size and / or shape of the X-ray beam to be used during imaging exposure.

[0096] In one embodiment, the array comprises a component or components adapted to determine the position and / or shape of an anatomical structure positioned for imaging, and subsequently, a control system uses such knowledge to adjust the X-ray beam collimation and / or projected visible light pattern on the anatomical structure. There exists not only a technique for determining the distance to a surface and the shape of the surface in a coordinate system, but also a technique for transferring information from one coordinate system to another coordinate system when the geometry of the imaging array (and its related components) and its interrelationship with respect to the coordinate system in which the surface position and shape are determined are known. In an embodiment, instead of determining the shape of the surface of the anatomical structure, for example, only the shortest distance from the same position to the surface of the anatomical structure may be determined.

[0097] Pre-exposure operations regarding the mutual positioning of anatomical structures and imaging assemblies, and adjusting the X-ray beam size and shape according to a given imaging mode and even according to the anatomical structure to be imaged, may be applied in relation to various imaging modes arranged in the imaging device. Such operations may generally include a control system of the device comprising geometric information regarding the mutual positioning of an X-ray source, a light-emitting component (141'), an X-ray detector and / or a patient support, and thus, for a given light field pattern and the position where it is cast, the control system comprises corresponding collimation information for limiting the X-ray beam when the X-ray beam is emitted from a given position of the X-ray source in relation to a given imaging mode.

[0098] The operation mode may include, as an example, a pre-exposure operation for an X-ray source (14) to which a visible light emission component (141') is connected, which drives the guide component (50) for the X-ray source (14) so ​​that the visible light emission component (141') is essentially positioned at the base position of the X-ray source (14) before driving the X-ray source (14) and the X-ray detector (15) from their base positions, and which adjusts the field light pattern generated by the visible light emission component (141') to a default shape and size. The default shape and size may be preset according to an imaging mode selected from the user interface of the device.

[0099] According to one embodiment, for example, the selected imaging mode includes driving an X-ray source (14) and an X-ray detector (15) to a predetermined distance from their base position. The device may be configured to allow, after such pre-exposure operation, to draw a light field pattern and, accordingly, adjust the size and / or shape of the X-ray beam to be used during imaging exposure, depending on the characteristics of a given individual anatomical structure positioned for imaging.

[0100] In relation to a given patient entry operation or patient entry mode, according to one embodiment, it includes a visible light emitting component (141') positioned at the same location where an X-ray source is positioned during subsequent imaging exposure or at the start of subsequent imaging exposure.

[0101] According to one embodiment, subsequently, the light field indicator (141) may be configured to project a light beam having the same shape as the X-ray beam that the X-ray source (14) is configured to emit or can be adjusted to emit. This light field indicator (141) may be mounted, for example, as a component separate from the X-ray source (14) on the same guide component (50) as the X-ray source (14) and may be mounted movably relative to the support component (12). Accordingly, the range of movement of the guide component (50) on which the X-ray source (12) and the light-emitting component may be mounted is preferably configured so that the X-ray source (14) and the light-emitting component (141') may be positioned at the same location within the range of movement provided by the guide component (50). This configuration provides a novel device that enables a positioning light pattern to be cast onto a target to be imaged from the same location where the actual X-ray imaging exposure occurs or starts.

[0102] FIG. 9 illustrates, as a block diagram, an example of a component of a control system applicable for use in the device. The control system according to FIG. 9 is configured to enable the operation of an X-ray source (14) and an X-ray detector (15) (imaging means or assembly) during exposure according to an imaging mode. The component controlling the operation of the X-ray source (14) and the X-ray detector (15) may include a component physically arranged in the X-ray source (14) and / or the X-ray detector (15) and / or elsewhere within the device.

[0103] The control system may be further configured to control various driving means of the device, for example, a driving means for driving one or more guide components (50) and a driving means for moving and rotating a supporting component (20) for an X-ray imaging assembly (14, 15). The signal path may also be arranged to control the aforementioned components in relation to adjusting the shape and size of the field pattern and positioning the components in relation to the supporting component (12).

[0104] The control system of FIG. 9 additionally illustrates a patient entry mode feature that may include an optional feature of rotating the X-ray imaging assembly (14, 15) as well as controlling at least one of the aforementioned driving means.

[0105] In the case of a device that includes a signal path to a mounting structure (23) as further discussed above, additionally illustrated in FIG. 9, and a motor-driven locking mechanism (24) for connecting and disconnecting the first and second elongated frame parts (11, 21) as described above, the control system may control the driving of the locking mechanism (24).

[0106] Overall, the control system may be arranged to control the aforementioned operation or a part thereof. The aforementioned structure and functionality facilitate positioning and provide various possibilities for performing imaging of the patient's desired volume.

[0107] Control signals for various operations may be triggered in response to input from the user interface of the detected operation or device. The memory of the control system may include various interrelationship information of protocols regarding one or more entry and / or imaging modes, as well as pattern shapes and dimensions and related control protocols as described above.

[0108] Although various embodiments have been described 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 irradiation and functionally connected to the X-ray source, comprising a collimator component configured to limit the X-ray irradiation generated by the X-ray source to a beam to be aimed toward the X-ray detector and to define an X-ray irradiation field pattern; a visible light emission component, comprising a light field indicator configured to project a visible light field pattern to be aimed toward the X-ray detector; and a control system comprising control information regarding an imaging mode. The apparatus further comprises a support component on which the X-ray source, the X-ray detector, and the visible light emission component are mounted, wherein the support component is configured to enable positioning the X-ray source and the visible light emission component at essentially the same position relative to the support component, so that when positioned at essentially the same position at a given time, a given field pattern is directed toward the X-ray detector in essentially the same direction. Additionally, the device may include a first frame portion that extends in a first direction and includes a first end and a second end, and a support portion on which an X-ray source, an X-ray detector, and a visible light emission component are mounted extends from the first frame portion in a second direction that is essentially perpendicular to the first direction.

[0109] To add or summarize some of the features described above, the embodiment may include a configuration in which the supporting component may include a ring-shaped structure, which may include a ring-shaped gantry and a housing that accommodates at least the ring-shaped gantry.

[0110] Positioning the X-ray source and the visible light emission component in essentially the same location may include arranging the X-ray source and the visible light emission component so as to be movable in a direction perpendicular to both the first and second directions.

[0111] The X-ray source, the collimator component, and the visible light emission component are arranged to be movable as a fixed assembly. Meanwhile, the X-ray source and the visible light emission component may be arranged to be movable as fixed units with respect to the collimator component.

[0112] The optical field indicator may 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 pattern of an optical field that displays an area as a combination. Additionally, the optical field indicator may be configured to enable the projection of visible light field patterns of different sizes and / or different shapes, and the collimator component enables the limitation of X-ray irradiation field patterns of different sizes and / or different shapes.

[0113] The control system may include cross-relation information regarding the dimensions of a visible light field pattern and an X-ray irradiation field pattern at a given distance from an X-ray detector, and the light field indicator and collimator components are configured to enable the dimensions and / or shape of their respective field patterns according to the cross-relation information so that the field patterns cover essentially the same area at the given distance from the X-ray detector. Additionally or alternatively, the cross-relation information may include cross-relation information regarding a given imaging mode.

[0114] The given imaging mode may be a CBCT imaging mode, and the control system is configured to enable the area at a given distance from the X-ray detector (15) regarding the volume to be covered in relation to the given CBCT imaging mode and when using the given collimation setting of the X-ray beam, to be indicated by a visible light field pattern.

[0115] The array may include a component or components configured to determine the position and / or shape of an anatomical structure positioned for imaging, and accordingly, the control system is configured to use said knowledge to adjust the X-ray beam collimation and / or projected visible light pattern on the anatomical structure, wherein said position and / or shape defines a corresponding given distance from the X-ray detector (15).

[0116] Additionally, the control system may be configured to receive information about the characteristics of the visible light pattern it projects from a light field indicator, and to convert said received information into information about a method for controlling the operation of a collimator component to adjust the X-ray irradiation field pattern so as to correspond at least substantially to the size and shape of the area indicated by the projected visible light pattern.

[0117] The control system may be further configured to receive information from a collimator component regarding the characteristics of the X-ray irradiation field pattern it limits, and to convert said received information into information regarding a method for controlling the operation of an optical field indicator to adjust the visible light field pattern to correspond at least substantially to the size and shape of the X-ray irradiation field pattern.

[0118] The device may include a first guide component mounted on a support component, and an X-ray source and a visible light emission component are mounted together as a fixed unit, and the first guide component is configured to enable the fixed unit to move, and the range of movement includes a base position and first and second extreme positions. The first guide component may include a carriage mounted on the fixed unit including the X-ray source and the visible light emission component, and the range of movement of the carriage includes a base position and first and second extreme positions.

[0119] The first guide component may include at least one guide groove or rail on one side of the support component and a matching component on one side of the carriage. Meanwhile, the first guide component may include a motor-driven component functionally connected to the carriage, and the motor-driven component provides movement of a fixed unit including an X-ray source and a visible light emission component within a range including first and second extreme positions. Additionally, the first guide component may include a position sensor array configured to acquire information regarding the position of the fixed unit including the X-ray source and the visible light emission component within its movement range, and the position sensor array is configured to detect the position of the carriage within the carriage's movement range. The first guide component may be configured to enable the fixed unit to move laterally, and the motor-driven component may include a drive screw, the drive screw being aligned parallel to at least one guide groove or rail and functionally connected to the carriage.

[0120] The position sensor array may include a magnetic component that is structurally connected to a carriage and movably connected to a rod extending parallel to at least one guide groove or rail of a guide component and the drive screw.

[0121] A mounting bracket can be fixed to a carriage and, on the other hand, to a fixed unit including an X-ray source and a visible light emission component, thereby mechanically connecting the fixed unit to a guide component.

[0122] A signal path may be provided between the first guidance component and the control system. The signal path may include a signal path between the position sensor array and the control system.

[0123] Additionally, a signal path can be provided between the collimator component (142) and the control system, and between the optical field indicator (141) and the control system, so that the collimator component (142) and the optical field indicator (141) can be controlled according to mutual relationship information.

[0124] The ring-shaped structure may include a ring-shaped gantry that also accommodates a first guide component. Additionally, the housing may include a surface having at least one opening, said at least one opening is for mounting at least one X-ray source through said at least one opening by a mounting bracket, said at least one opening is dimensioned to allow a range of movement of the X-ray source guided by said guide component.

Claims

Claim 1 A dental or medical X-ray imaging device comprising: an X-ray detector (15); an X-ray source (14) configured to generate X-ray irradiation and including a collimator component (142) functionally connected to the X-ray source (14) - the collimator component (142) is configured to limit the X-ray irradiation generated by the X-ray source (14) into a beam to be aimed toward the X-ray detector (15) and to define an X-ray irradiation field pattern -; a light field indicator (141) including a visible light emission component (141') and configured to project a visible light field pattern to be aimed toward the X-ray detector (15); A device comprising a control system including control information regarding an imaging mode, wherein the device comprises a support component (12) on which an X-ray source (14), an X-ray detector (15), and a visible light emission component (141') are mounted—the support component (12) is configured to enable positioning the X-ray source (14) and the visible light emission component (141') at essentially the same position relative to the support component (12), so that when positioned at essentially the same position at a given time, a given field pattern is directed toward the X-ray detector (15) in essentially the same direction—and additionally a first frame portion (11) extending in a first direction and including a first end and a second end—the support component (12) on which the X-ray source (14), the X-ray detector (15), and the visible light emission component (141') are mounted extends from the first frame portion (11) in a second direction that is essentially perpendicular to the first direction. Claim 2 A device according to claim 1, wherein the supporting member (12) includes a ring-shaped structure, and the ring-shaped structure includes a ring-shaped gantry (122) and at least a housing (121) that accommodates the ring-shaped gantry (122). Claim 3 An apparatus according to claim 1 or 2, wherein positioning the X-ray source (14) and the visible light emission component (141') in essentially the same location includes arranging the X-ray source (14) and the visible light emission component (141') so as to be movable in a direction perpendicular to both the first and second directions. Claim 4 A device characterized in that, in any one of claims 1 to 3, the X-ray source (14), the collimator component (142), and the visible light emission component (141') are arranged to be movable as a fixed assembly. Claim 5 A device characterized in that, in any one of claims 1 to 4, the X-ray source (14) and the visible light emission component (141') are arranged to be movable as fixed units with respect to the collimator component (142). Claim 6 A device according to any one of claims 1 to 5, wherein the light field indicator (141) is configured to generate a visible light field pattern such that the visible light field pattern is a region that is substantially uniformly illuminated or a pattern of light fields that indicates a region as a combination. Claim 7 An apparatus according to any one of claims 1 to 6, characterized in that the light field indicator (141) is configured to enable projecting a visible light field pattern of different sizes and / or different shapes, and the collimator component (142) is configured to enable limiting an X-ray irradiation field pattern of different sizes and / or different shapes. Claim 8 An apparatus according to any one of claims 1 to 7, wherein the control system includes cross-relation information regarding the dimensions of a visible light field pattern and an X-ray irradiation field pattern at a given distance from an X-ray detector, and the light field indicator (141) and the collimator component (142) are configured to enable the dimensions and / or shape of their respective field patterns to be adjusted according to the cross-relation information so that the field pattern covers essentially the same area at the given distance from the X-ray detector (15), and / or the cross-relation information includes cross-relation information regarding a given imaging mode. Claim 9 An array characterized in that, in claim 8, the given imaging mode is a CBCT imaging mode, and the control system is configured to enable the area at a given distance from the X-ray detector (15) regarding the volume to be covered in relation to the given CBCT imaging mode and when using the given collimation setting of the X-ray beam, to be indicated by a visible light field pattern. Claim 10 An array according to claim 8 or 9, wherein the array comprises a component or components configured to determine the position and / or shape of an anatomical structure positioned for imaging, and accordingly, a control system configured to use said knowledge to adjust the X-ray beam collimation and / or projected visible light pattern on the anatomical structure, wherein said position and / or shape defines said given distance from the X-ray detector (15). Claim 11 An apparatus characterized in that, in any one of claims 1 to 10, the control system receives information about the characteristics of the visible light pattern that it projects from the light field indicator (141) and is configured to convert said received information into information about a method for controlling the operation of the collimator component (142) to adjust the X-ray irradiation field pattern so as to at least substantially correspond to the size and shape of the area indicated by the projected visible light pattern, and / or the control system receives information about the characteristics of the X-ray irradiation field pattern that it limits from the collimator component (142) and is configured to convert said received information into information about a method for controlling the operation of the light field indicator (141) to adjust the visible light field pattern so as to at least substantially correspond to the size and shape of the X-ray irradiation field pattern. Claim 12 A device according to any one of claims 1 to 11, wherein the device comprises a first guide component (50) mounted on a support component (12), an X-ray source (14) and a visible light emission component (141') are mounted together as a fixed unit, and the first guide component (50) is configured to enable the fixed unit to move, and the range of movement includes a base position and first and second extreme positions. Claim 13 A device according to claim 12, wherein the first guide component (50) comprises a carriage (51) mounted on the fixed unit including an X-ray source (14) and a visible light emission component (141'), and the range of movement of the carriage (51) includes a base position and first and second extreme positions. Claim 14 A device according to claim 13, wherein the first guide component (50) comprises at least one guide groove or rail (52) on the side of the support component (12) and a matching component (52') on one side of the carriage (51). Claim 15 A device according to claim 14, wherein the first guide component (50) comprises a motor-driven component (53) functionally connected to the carriage (51), and the motor-driven component (53) provides the movement of the fixed unit comprising the X-ray source (14) and the visible light emission component (141') within the range including the first and second extreme positions. Claim 16 A device according to any one of claims 13 to 15, wherein the first guide component (50) comprises a position sensor array (55) configured to acquire information regarding the position of the fixed unit including an X-ray source (14) and a visible light emission component (141') within the movement range, and the position sensor array (55) is configured to detect the position of the carriage (51) within the movement range of the carriage (51). Claim 17 A device according to any one of claims 13 to 16, wherein the first guide component (50) is configured to enable the fixed unit to move laterally, and the motor-driven component (53) includes a drive screw (54), and the drive screw (54) is aligned parallel to the at least one guide groove or rail (52) and is functionally connected to the carriage (51). Claim 18 In claim 17, the device is characterized in that the position sensor array (55) comprises a magnetic component (56) that is structurally connected to the carriage (51) and movably connected to a rod (57) that extends parallel to the at least one guide groove or rail (52) of the guide component (50) and the drive screw (54). Claim 19 A device characterized in that, in any one of claims 13 to 18, a mounting bracket (58) is fixed to a carriage (51) and, on the other hand, to a fixed unit comprising an X-ray source (14) and a visible light emitting component (141'), and said fixed unit is mechanically connected to a guide component (50). Claim 20 A device characterized in that, in any one of claims 12 to 19, a signal path is provided between the first guide component (50) and the control system, and the signal path includes a signal path between the position sensor array (55) and the control system. Claim 21 An array characterized in that, in any one of claims 8 to 20, a signal path is provided between the collimator component (142) and the control system, and between the optical field indicator (141) and the control system, so as to enable the collimator component (142) and the optical field indicator (141) to be controlled according to mutual relationship information. Claim 22 A device according to any one of claims 2 to 21, wherein the housing (121) comprises a surface having at least one opening (59), said at least one opening (59) is for mounting at least one X-ray source (14) through said at least one opening (59) by a mounting bracket (58), said at least one opening (59) is dimensioned to allow a range of movement of the X-ray source (14) guided by said guide component (50).

Images