DE102014207568A1 - X-ray device - Google Patents

Abstract

The invention relates to an X-ray device (2) comprising an X-ray source (18) and an X-ray detector (20), the X-ray source (18) and the X-ray detector (20) being positioned opposite each other in a gantry (4) and being mounted about an axis of rotation (22). rotatably mounted and that the gantry (4) on a chassis (6) is mounted, which comprises a support bracket (8) extending from a support floor (10) in the vertical direction.

Description

The invention relates to an X-ray device comprising an X-ray source and an X-ray detector.

In some areas or specialist fields of medicine, such as dental medicine, so-called digital volume tomographs (abbreviated to DVT), also called conebeam computer tomographs, are increasingly being used instead of classical computer tomographs in order to generate X-ray images, in particular 2D sectional images.

Corresponding digital volume tomographs are simpler in comparison to classical computer tomographs and therefore also more cost-effective, both for acquisition and maintenance. In this case, a construction with a simple flat-bed detector, also called a flat-panel detector, and an x-ray tube, which rotate opposite to one another on a fixed horizontal circular path, is typical. The entire structure is kept fairly compact, so that corresponding digital volume tomographs are also suitable for smaller practices due to their small footprint.

However, the simpler structure also entails disadvantages, due to which lower image qualities can be achieved with digital volume tomographs than with classical computer tomographs. As a result, inter alia, the so-called soft tissue contrast is reduced, making digital volume tomography for a whole range of medical specialties or subsectors, such as neurology, are unsuitable.

Based on this, the invention has for its object to provide an advantageous X-ray device.

This object is achieved by an X-ray device with the features of claim 1. The dependent claims include in part advantageous and in part self-inventive developments of this invention.

A corresponding X-ray device in this case comprises an X-ray source and an X-ray detector, wherein the X-ray source and the X-ray detector are positioned opposite one another in a gantry, in particular a closed gantry ring, and are rotatably mounted about an axis of rotation. The gantry is in this case mounted on a chassis, which comprises a support post, which extends from a support floor in the vertical direction, relative to the earth system.

Such an x-ray device combines some advantages of a classical computed tomography with the advantages of a digital volume tomograph. Thus, the structure, as in a digital volume tomograph, held quite compact and at the same time allows the use of the gantry a very precise guidance of X-ray source and X-ray detector, which in turn benefits the image quality. In addition, the gantry itself has a shielding effect, so that the spread of the x-rays generated during operation is favorably restricted.

In addition, the x-ray source, the x-ray detector, the gantry and / or the chassis are preferably adapted to a specific medical field and thus to a specific field of application or a particular application scenario and, accordingly, the x-ray device is individualized for a medical specialty or subarea. In order to realize an individual X-ray device, it is always preferred to operate only the technical effort which is absolutely necessary in order to enable the intended examinations or examination methods which are typical for a medical field. In this way, it is then possible to provide X-ray devices for many specialist areas, the acquisition and maintenance costs of which are considerably lower in comparison with the devices available hitherto, in particular in comparison to classical computer tomographs. Due to the individualization is also achieved that a corresponding X-ray device usually has smaller dimensions and accordingly a smaller footprint than current classical computed tomography. Of particular advantage is also the fact that by customizing a significant simplification of the operation can be achieved and is achieved because a corresponding X-ray device just not as many application scenarios and examination options covers, but provided for specific investigations and is specialized accordingly. This typically also reduces the number of possible settings that must be made before starting an exam. In the simplest case, only a handful of preset examination variants are then predefined, from which an operator selects, for example, by tapping a pictogram displayed on a touchscreen.

Among other things, in favor of a compact construction, the chassis of the x-ray device is further preferably designed such that an object to be examined, ie typically a patient, is positioned below the gantry for examination. This variant is particularly suitable for examinations of standing or sitting patients. Such investigations In some cases, they are considered to be more advantageous than examinations on recumbent patients, as carried out by means of classical computer tomographs. For example, in the field of dental medicine, patients are preferably examined while sitting, whereas in the area of orthopedics, various examinations of standing patients, for example for a representation of the spine, are considered to be advantageous.

It is also advantageous if the chassis is designed portal-like and comprises two lateral support posts, each extending from the support floor in the vertical direction. In this case, for example, the base used in the space in which the X-ray device is placed, in which case the support posts further preferably fixed to the ground, so for example screwed to the ground.

Alternatively serves as a support floor a floor assembly that connects the two support posts together, so that in effect is given an independent and in itself very stable structure. In this case, the floor assembly is preferably designed movable and has, for example, rollers or a kind of track drive, so that the chassis serves as a kind of chassis, with the help of the X-ray device can be repositioned as a mobile X-ray device if necessary. In this way, the x-ray device can then be used, for example, alternately in different treatment rooms and / or stowed in a space-saving cabinet or storage room, if it is not needed.

As mentioned above, in the case of the x-ray device presented here, not only the chassis is adapted to the respective medical field, but also the gantry which is attached to the chassis. In this case, the gantry typically has a hollow cylindrical or toroidal basic shape with an axis of symmetry which coincides with the axis of rotation about which the x-ray source and the x-ray detector rotate during operation. This axis of symmetry and thus also the axis of rotation are preferably oriented vertically. In this case, the X-ray source and the X-ray detector then rotate in operation on a circular path that lies in a horizontal plane, similar to the current digital volume tomographs for dental medicine.

Alternatively, the axis of symmetry of the gantry and thus the axis of rotation is tilted against a vertical orientation in the direction of a horizontal orientation. The tilting is specifically predetermined and preferably not compensated by a tilt of a patient to be examined again. Such an embodiment of the X-ray device with tilted gantry is intended, for example, for use in neurology, in which case, for example, a tilting of 60 ° is expedient. In this way, recordings can then be generated from the brain of a patient, whereby the eyes of the patient and in particular the lenses of the eyes of a patient are spared, that is, exposed to a relatively low radiation exposure.

In an advantageous development, the axis of symmetry, and thus the axis of rotation, is adjustable with respect to its orientation, so it can be aligned individually for an examination or even move during an examination. The alignment and / or the movement takes place, for example, completely automatically depending on an operating mode selected by an operator or a selected examination method or an examination program.

Since the technical complexity for the realization of a gantry typically increases, the greater the interior space of the gantry in which an object to be examined, ie a body part of a patient, is positioned, the interior of the gantry is preferably chosen to be just so large that the typical and expected application scenarios are being covered. So if, for example, only examinations are to be made on the head of a patient, it is sufficient to make the gantry such that a head has space in the interior of the gantry. If, on the other hand, examinations of the upper body of a patient are to be carried out, the gantry must be made correspondingly larger.

In addition, the gantry is advantageously suitable for differently configured X-ray detectors, so that, for example, X-ray detectors, such as those used in classical computer tomographs of the latest generation, can be used in the X-ray apparatus. Which type of X-ray detector is actually used depends on the particular field of use, that is, on the particular medical field in which the respective X-ray device is to be used.

In this case, the measuring surface, in particular the size of the measuring surface, of the X-ray detector is preferably also adapted to the respective medical specialty or to the medical application scenario. For example, in the case of an X-ray device for the field of dental medicine, the measuring surface or detector surface of the X-ray detector is just so large that the entire oral cavity of a patient can be completely imaged on the corresponding measuring surface. In other words, the measuring surface of the X-ray detector is just chosen so large that the so-called "Field of View" can be fully mapped with a single shot. As a result, the time required for a corresponding examination can be kept low, which is advantageous in particular because various patients find such examinations uncomfortable and sometimes difficult to keep quiet for the duration of the examination.

Since the X-ray detector is one of the most expensive components of the X-ray apparatus and the manufacturing costs increase with increasing size of the measuring surface of the X-ray detector, it is alternatively provided to select the measuring surface of the X-ray detector smaller than the so-called "field of view" and instead the X-ray detector to compensate during an investigation to map the desired "Field of View" quasi-sequence or in sections. Accordingly, the X-ray device according to a variant embodiment is designed such that the position of the gantry in the vertical direction is adjustable relative to an object to be examined. As a result, it is u.a. It is possible to perform so-called spiral scans, as are common in classical computer tomographs, in order to scan larger areas or volumes during an examination.

It is advantageous if the gantry is mounted on the vertical chassis in such a way that the gantry can be moved in the vertical direction and thus can be moved vertically relative to the chassis and the ground system.

Alternatively, the support floor on a platform with a height drive, so that the platform is movable in the vertical direction relative to the gantry. In this case, then the patient is then moved relative to the earth system, whereas the gantry usually remains in a fixed position relative to the earth system.

If the X-ray device is intended for application scenarios in which a patient is to be examined while sitting, which is advantageous in particular in the field of dental medicine or neurology, then it is further expedient for the support base to have a platform with a patient's seat on which a patient to be examined Patient is placed for an examination.

Also advantageous is in particular a combination of a height-adjustable gantry in which a standing patient can be scanned with an X-ray detector, as is known from a classical computer tomograph, which thus has the high soft tissue contrast required for some clinical applications. This results in the currently not given possibility to realize a 3D X-ray imaging for orthopedic use, by means of which, for example, intervertebral discs are represented. Such an X-ray device or such an X-ray scanner thus offers, in contrast to an X-ray device according to the prior art, also the possibility of imaging joints and intervertebral discs in the functionally natural, namely upright state. In contrast to today's lying imaging, this opens new horizons for the diagnosis of functional disorders of the postural apparatus. Because it allows the "in-situ" representation of the joints in the state in which the problems occur, namely upright posture.

Moreover, it is advantageous if the chassis has at least one fixation device for patient fixation, in particular for application scenarios in which an examination takes a little longer and / or make an uncomfortable posture necessary. In these cases, it is difficult for a patient to remain silent for the duration of the exam, which is typically the prerequisite for high quality radiographs. Here, the fixation device can then be used to fix the patient to be examined and to assist in holding the position. The fixing device is preferably attached to the patient's seat, at least if such is provided.

In addition, in favor of a lower manufacturing outlay, the x-ray device is preferably constructed from modules, wherein different modules are combined with one another for different fields of application or targeted clinical areas, that is to say for different medical specialties. In this case, it is provided, for example, that differently configured gantries, in particular differently sized gantries, can be combined and attached to one and the same chassis and that different x-ray detectors and / or different x-ray sources can be combined with one and the same gantry. In this way, a whole series of different and individually adapted to a medical specialty X-ray devices can be realized with a relatively small number of different modules or assemblies.

Alternatively or additionally, the modular structure is designed such that the user or end customer a chassis, differently designed gantries, especially different sized gantries, different X-ray detectors and / or different X-ray sources are provided so that they combine different modules as needed and can exchange with each other at any time. In particular, the interchangeability of the X-ray detectors is to be regarded as advantageous.

The x-ray source used is preferably an x-ray tube operated in particular pulsed. The X-ray tube then serves as a single-focus X-ray source and, accordingly, an X-ray source that is kept relatively simple compared to a conventional CT scanner is preferably used.

In addition, the X-ray detector is preferably given by a so-called flat-bed detector (flat panel detector), in particular based on Si, as it is also used in digital volume tomographs. A corresponding flat-bed detector has a flat measuring surface and is technically relatively easy to implement.

Alternatively, a detector is used as the X-ray detector, as it is usually installed in classical computed tomography, that is, a detector with a curved measuring surface with a cylindrical shell shape or a spherical surface shape. The basis for such detectors form special ceramics, which show a particularly low afterglow as Absorbtionsmaterial, for which therefore a fast decay characteristic. In addition, such detectors include a scattered beam collimator.

According to a further embodiment variant of the x-ray device, the gantry is equipped with two x-ray sources and two x-ray detectors, one x-ray source being positioned opposite an x-ray detector and the x-ray sources being offset in the gantry, in particular by approximately 90 o. The X-ray device thus has two X-ray source X-ray detector systems, wherein the two systems are preferably not designed for simultaneous operation, but instead are used alternately as needed. The two systems are further preferably designed differently and optimized in particular for different applications. For example, it is envisaged to design an embodiment of the X-ray apparatus such that an X-ray source X-ray detector system comprises an X-ray source and an X-ray detector as in a prior art digital volume tomograph and the second X-ray source X-ray detector system comprises an X-ray source as well has an X-ray detector as in a classical computed tomography.

According to a specially adapted to the field of dental medicine design variant of the X-ray device, this has a simple flat-bed detector and a simple, pulsed-operated X-ray tube. In this case, the measuring surface or detector surface of the flatbed detector is just so large that the oral cavity of a patient can be completely imaged thereon. The flatbed detector and the X-ray tube are housed in a fixed hollow cylindrical Gantryring, which is positioned horizontally at a fixed height so that it is located at head height relative to a seated patient. This represents a particularly simple and therefore cost-effective design variant of the X-ray device, which, however, is typically completely sufficient for the dental medicine sector.

A similarly configured variant of this X-ray device is also provided for the field of ear, nose and throat medicine, but here the flatbed detector is slightly larger in terms of the measuring surface, so that hereby the entire nose and throat area can be completely covered and imaged.

In the field of orthopedics, higher demands are placed on image quality, in particular with regard to soft tissue contrast, for example in the field of dental medicine, which is why an embodiment variant of the x-ray device optimized for this medical field has an x-ray detector and an x-ray source, as used in current classical computer tomographs. These are housed in a gantry, which is vertically aligned, so that patients can be examined by standing with the X-ray device. In this way, in particular an image, so also a 3D image, the spine in the standing allows. The same applies to the shoulder and the hip area, since malpositions can be detected in a standing examination rather than a lying examination, as they are carried out in the case of an examination using a classical computer tomograph. For complete imaging of a spinal column of a patient, the X-ray detector is either made sufficiently large in terms of its measuring surface, or else the X-ray detector is set up to carry out a spiral scan, in this case a vertical spiral scan. For this purpose, preferably the gantry or the gantring is vertically movable.

A similarly configured variant of the X-ray device for the field of orthopedics is also provided for the field of pulmonology, but here is the possible vertical travel for the gantry to the dimensions of a lung of an adult human tuned, so to about 35 cm. Alternatively, the measuring surface of the X-ray detector is extended correspondingly in the vertical direction.

A further embodiment variant of the x-ray device adapted to the fields of neurology accordingly also has an x-ray detector and an x-ray source, as they are currently used in classical computed tomography, but here is the X-ray device designed for a smaller "field of view". The vertical traverse path for spiral scans is about 20 to 25 cm, so that the head of a patient can be scanned completely. Alternatively, an X-ray detector with a correspondingly large measuring surface is used, which is spherically curved, so that the respectively relevant region can be scanned around the axis of rotation in the course of a single detector rotation. The axis of rotation is not vertically aligned, but tilted against the vertical. The X-ray source and the X-ray detector thus do not rotate about the longitudinal axis of a patient or a patient's head, but in a plane tilted against it, so that the sensitive eye lens of a patient has to cope with a relatively low X-ray dose during an examination. For this purpose, either the gantry or the gantring is tilted aligned or the inclination angle of the gantry is variably adjustable.

In addition, a design variant of the x-ray device is provided for veterinary medicine, in which an animal to be examined is scanned lying on a table by means of x-ray radiation. The vertical feed of the X-ray source and the X-ray detector is effected either by a corresponding movement mechanism of the gantry or else the vertical relative position between the gantry and the animal is accomplished by means of a vertically movable table. If, in any case, a moveable table is provided, then it is also advantageous to allow the rotational movement with the aid of the table and, accordingly, to install the gantry with the x-ray detector and the x-ray source in a fixed manner.

Finally, in the case of an X-ray device configured as a universal scanner, it is designed such that different medical fields and application scenarios are covered. Such an x-ray device is in particular intended for shared use in various specialist practices or joint practices with several specialist areas and for smaller care centers. Accordingly, the x-ray device is then adapted to two or more medical specialties. A corresponding universal scanner has a vertical feed either by means of a movable gantry or by means of a movable platform and by a tiltable gantry, in which the alignment of the rotation axis is adjustable and adjustable. In the gantry, an x-ray detector and an x-ray source, as well as an x-ray detector and an x-ray source as in a digital volumetric tomograph, are installed and accommodated in a criss-cross manner, which can then be used alternately after a medical indication.

Embodiments of the invention will be explained in more detail with reference to a schematic drawing. Show:

1 in a perspective view of a first X-ray device with a movable and portal-like chassis and with a gantry,

2 in a perspective view, the first X-ray device with alignable and movable gantry,

3 in a perspective view, a second X-ray device with alignable gantry and movable platform,

4 in a perspective view a vertically oriented gantry,

5 in a perspective view of a tilted gantry,

6 in a perspective view, a horizontally oriented gantry,

7 3 is a perspective view of the first X-ray device with a fixation device and a standing patient;

8th in a perspective view of the first X-ray device with a patient's seat and a sitting patient and

9 in a sectional view of a gantry with two X-ray sources and two X-ray detectors.

Corresponding parts are provided in all figures with the same reference numerals.

An example described below and in 1 illustrated X-ray device 2 has a hollow cylindrical gantry 4 on, attached to a movable chassis 6 is appropriate.

The chassis 6 includes two support posts 8th which extend from a support floor in the vertical direction, with respect to the earth system, and thus form a portal-like structure. Here are the support posts 8th stuck to the support floor, by a floor assembly 10 with rollers attached to it 12 is given, connected, so that the bottom group 10 together with the support posts 8th a stable and stable in itself training rigid support structure at the gantry 4 quasi suspended or suspended.

The X-ray device 2 is thus as a mobile X-ray device 2 designed and as a result, the X-ray device can be 2 If necessary, reposition it at any time, for example, use it alternately in different treatment rooms for examinations on patients. The supply of electrical energy takes place via the supply network of the building, in which the X-ray device 2 is used, the X-ray device 2 For this, a connection cable with a Schuckostecker (connector type F or CEE 7/4) has. That is, the x-ray device 2 connected to a simple household power outlet for operation. For the operation and control of the X-ray device 2 is in one of the support posts 8th integrated a control console through which all inputs and settings for an investigation are entered.

The generation of X-ray images as part of a patient's examination 16 then takes place according to known principle by means of an X-ray source 18 on the one hand and an x-ray detector 20 on the other hand, these being in the gantry 4 positioned opposite one another and thereby about an axis of rotation 22 rotatably mounted. The orientation of the rotation axis 22 is not rigid by the construction of the X-ray device 2 instead, orientation is adjusted depending on the intended examination or examination method, with orientation being adjusted fully automatically as soon as an examination or rather an examination program has been selected by an operator. This is the gantry 4 whose orientation is the orientation of the axis of rotation 22 determined, adjustable on the chassis 6 attached, as in 2 indicated by arrows. As part of the alignment, the gantry 4 while a horizontal axis of rotation 24 , which are parallel to the floor group 10 aligned, twisted. In this way, then different investigation methods can be realized, in which the axis of rotation 22 is oriented differently, as shown in the illustrations 4 to 6 is shown.

6 shows a study or examination method, as is common in classical computed tomography. Here is the patient to be examined 16 on a patient couch 26 positioned and the gantry 4 is oriented such that the axis of rotation 22 parallel to the horizontally aligned central longitudinal axis of the patient 16 lies. In the case of the examination method according to 4 are the median longitudinal axis of the patient 16 and the rotation axis 22 also aligned parallel to each other, but here is the examination of the patient 16 standing, that is, with a vertical orientation of the axis of rotation 22 , 5 Finally, FIG. 3 shows an examination method in which the rotation axis 22 is tilted by 45 ° against a horizontal or against a vertical orientation. The tilting serves to realize a special examination method, in which the axis of rotation also tilts to the central longitudinal axis of the patient to be examined 16 or at least its head is aligned. So that means that this tilting of the gantry 4 not by a corresponding tilted positioning or storage of the patient 16 is compensated.

Furthermore, the gantry 4 as in 2 indicated, movable in the vertical direction. In this way, for example, a spiral scan, as it is known from classical computer tomographs, realize. Additionally or alternatively, the vertical relative movement between the gantry allows 4 and a patient to be examined 16 a simpler positioning of the patient 16 for the investigation, since the gantry 4 can be moved out of the way for positioning. Alternatively, a corresponding vertical relative movement can also be achieved in that not the gantry 4 but the patient to be examined 16 is moved vertically. An appropriately designed X-ray device 2 is in 3 shown. Here is the patient to be examined 16 on a platform 28 positioned with a height drive, not shown, and if necessary with the help of the platform 28 move in vertical direction.

Is the x-ray device 2 Also provided for examinations in which the patient 16 in an uncomfortable posture or position and / or in which the examination takes a relatively long time, the X-ray device has 2 a fixing device 30 on, through which the patient 16 assisted in holding the intended position. In the embodiment according to 7 is the x-ray device 2 for examinations of standing patients 16 intended. As a fixing device 30 Here serves one at the bottom group 10 attached support strip 32 to which the patient refers 16 during the examination, so that it is easier to stay motionless. If necessary, in addition belts not shown in detail around the support strip 32 on the one hand and the patient 16 on the other hand, tied to the patient 16 in addition to fix.

In the case of the embodiment according to 8th is the x-ray device 2 for examinations on seated patients 16 provided and accordingly, the X-ray device 2 as a fixing device 30 a patient seat 34 on which on the floor group 10 is mounted. Here too straps are used for fixation if required. Is the x-ray device 2 for both sedentary and standing patients 16 provided, so are the fixing devices 30 So for example the support bar 32 and the patient seat 34 , reversibly detachable on the floor assembly 10 attached, so that they can be exchanged against each other whenever needed and again.

9 finally shows an alternative embodiment of the gantry 4 in which two x-ray sources 18 and two x-ray detectors 20 in the gantry 4 are housed, wherein in each case an X-ray detector 20 an X-ray source 18 is arranged opposite. The two x-ray sources 18 on the one hand and the two X-ray detectors 20 On the other hand, this is offset by 90 ° to each other within the gantry 4 positioned so that the two X-ray source X-ray detector systems are arranged almost crosswise. Depending on the intended examination method or examination, one of these X-ray source X-ray detector systems is then selected and used to generate X-ray images.

This is an X-ray source 18 as a simple single-focus x-ray tube 36 designed and this is a simple flatbed detector 38 assigned. With this combination, X-ray images can be generated comparable to those of a digital volume tomograph. For examinations in which above all a high soft-tissue contrast is required, then the second X-ray source X-ray detector system, ie the other combination of X-ray source 18 and x-ray detector 20 , intended. Accordingly, the second X-ray source 18 as a multi-focus X-ray source 40 and the second X-ray detector 20 as a detector with a curved measuring surface 42 trained, so designed similarly, as is the case with a classical computed tomography.

The invention is not limited to the embodiment described above. Rather, other variants of the invention can be derived therefrom by the person skilled in the art without departing from the subject matter of the invention. In particular, all the individual features described in connection with the exemplary embodiment can also be combined with each other in other ways, without departing from the subject matter of the invention.

LIST OF REFERENCE NUMBERS

2

X-ray device

4

gantry

6

chassis

8th

support bracket

10

underbody

12

role

14

control panel

16

patient

18

X-ray source

20

X-ray detector

22

axis of rotation

24

axis of rotation

26

patient support

28

platform

30

fixing

32

supporting strip

34

patients seat

36

Single-focus X-ray tube

38

Flatbed detector

40

Multi-focus X-ray source

42

Detector with curved measuring surface

Claims (17)

X-ray device ( 2 ) comprising an X-ray source ( 18 ) and an x-ray detector ( 20 ), characterized in that the X-ray source ( 18 ) and the X-ray detector ( 20 ) Opposite each other in a gantry ( 4 ) and thereby about a rotation axis ( 22 ) are rotatably mounted and that the gantry ( 4 ) on a chassis ( 6 ) is mounted, which a support bracket ( 8th ) extending from a support floor ( 10 ) extends in the vertical direction. X-ray device ( 2 ) according to claim 1, characterized in that the chassis ( 6 ) is configured such that an object to be examined ( 16 ) for a study below the gantry ( 4 ) is positioned. X-ray device ( 2 ) according to claim 1 or 2, characterized in that the chassis ( 6 ) is formed portal-like and two lateral support posts ( 8th ), each extending from the support floor ( 10 ) extend in the vertical direction. X-ray device ( 2 ) according to one of claims 1 to 3, characterized in that the supporting floor ( 10 ) a movable floor assembly ( 10 . 12 ). X-ray device ( 2 ) according to one of claims 1 to 4, characterized in that the axis of rotation ( 22 ) is vertically aligned. X-ray device ( 2 ) according to one of claims 1 to 5, characterized in that the axis of rotation ( 22 ) is tilted against a vertical orientation tilted in the direction of a horizontal orientation. X-ray device ( 2 ) according to one of claims 1 to 6, characterized in that the gantry ( 4 ) on the chassis ( 6 ), that the orientation of the axis of rotation ( 22 ) is adjustable. X-ray device ( 2 ) according to one of claims 1 to 7, characterized in that the position of the gantry ( 4 ) in the vertical direction relative to an object to be examined ( 16 ) is adjustable. X-ray device ( 2 ) according to one of claims 1 to 8, characterized in that the gantry ( 4 ) on the vertical chassis ( 6 ) that the gantry ( 4 ) is movable in the vertical direction. X-ray device ( 2 ) according to one of claims 1 to 9, characterized in that the supporting floor ( 10 ) a platform ( 28 ) with a height drive, so that the platform ( 28 ) is movable in the vertical direction. X-ray device ( 2 ) according to one of claims 1 to 10, characterized in that the supporting floor ( 10 ) a platform ( 28 ) with a patient seat ( 34 ) having. X-ray device ( 2 ) according to one of claims 1 to 11, characterized in that the chassis ( 6 ) a fixing device ( 30 ) for patient fixation. X-ray device ( 2 ) according to one of claims 1 to 12, characterized in that it is constructed from modules, wherein different modules can be combined with each other, in particular different X-ray detectors ( 20 ) with one and the same gantry ( 4 ). X-ray device ( 2 ) according to one of claims 1 to 13, characterized in that the X-ray source ( 18 ) by a, in particular pulsed operated, X-ray tube ( 36 ) given is. X-ray device ( 2 ) according to one of claims 1 to 14, characterized in that the X-ray detector ( 20 ) by a flatbed detector ( 38 ) given is. X-ray device ( 2 ) according to one of claims 1 to 14, characterized in that the X-ray detector ( 20 ) by a detector ( 42 ) of a classical computer tomograph, the detector ( 42 ) has in particular an absorption material of a special ceramic, which shows a particularly low afterglow, and wherein the detector ( 42 ) comprises in particular a stray beam collimator. X-ray device ( 2 ) according to one of claims 1 to 16, characterized in that the gantry ( 4 ) with two x-ray sources ( 18 ) and two X-ray detectors ( 20 ), wherein in each case an X-ray source ( 18 ) an X-ray detector ( 20 ) is positioned opposite and wherein the x-ray sources ( 18 ) in the gantry ( 4 ) are offset from one another, in particular by about 90 °.

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