JPH119579A - X-ray diagnostic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make possible to replace an X-ray detector with one of a desirable size easily by providing a solid plane detecting means whose field of vision is changeable that forms an X-ray image corresponding with X-ray radiated from an X-ray generating means. SOLUTION: A solid plane detector 5 that is structured by arranging X-ray detection elements in rows and columns, each comprised of pixels and thin film transistors in the form of an array two dimensionally, converts radiated X-ray to visible ray with a phosphor, forms electric charges corresponding with visible ray by photo diodes and accumulates them in an accumulation capacitor. And electric charges accumulated in the accumulation capacitor are read on a pixel by pixel basis for each line as image signals and outputted. Here, a connection having a inverted trapezoidal cross section is provided on the rear side of each solid plane detector 6 so that multiple solid plane detectors 6 different in the field of vision may be replaced and mounted, a supporting and fixing section and a replacement and detachment mechanism which the solid plane detectors 6 can be mounted on and dismounted from are arranged in the interface between a vertical driving and moving mechanism 7 and a solid plane detector.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray diagnostic apparatus, and more particularly to an X-ray diagnostic apparatus in which an X-ray detector can be easily exchanged for a desired size.

[0002]

2. Description of the Related Art In a conventional X-ray diagnostic apparatus, an image intensifier (II) is used as an X-ray detector, and a small amount of X-rays are irradiated to a subject. At the time of “perspective” for imaging, the X-ray information transmitted through the subject is converted into optical information, and this optical information is condensed by an optical lens and
The image is captured by a V-camera and a fluoroscopic image is displayed. Further, at the time of “imaging” in which a large amount of X-rays are emitted to the subject to perform imaging, a cassette is set in a cassette holder provided in the X-ray diagnostic apparatus, and imaging is performed using an X-ray film. It has become. At the time of this imaging, by using a film changer, it is possible to omit the exchange of the cassette for each imaging, thereby enabling continuous imaging, and controlling the X-ray aperture to expose the X-ray from the X-ray tube. By narrowing the irradiation range, spot imaging can be performed by exposing X-rays only to desired locations.

[0003] Such fluoroscopy and radiography are performed in different sizes depending on the case site where X-ray imaging is performed. I. The X-ray diagnostic apparatus provided with is used for different purposes.
Conventionally, different sizes of I.P. I.
It has been common practice to install an X-ray diagnostic apparatus having the following features and to move a patient to each room to perform imaging or the like. Today, however, an arm system for a one-room two-specialist circulatory organ as shown in FIG. Is a common system.

This arm system is compatible with a 16 inch (or 12 inch, 14 inch, etc.) I.D. I. A general positioner which is an X-ray diagnostic apparatus having a 9 inch I.D. I. And a cardiac positioner, which is an X-ray diagnostic apparatus having the above structure, in one room.

The cardiac positioner includes a ceiling mounting portion 100 for mounting the positioner on a ceiling, and a support arm 10 having one end held by the ceiling mounting portion 100.
1 and a C-arm holder 102 provided on the other end side of the support arm 101 for rotatably holding a substantially C-shaped C-arm 103, and provided on both ends of the C-arm 103 so as to face each other. 9 inch I.D. I. 105
And an X-ray generation unit 104.

The C arm 103 has I. An up-down drive mechanism 106 is provided to control the movement of the 105 in the up-down direction (the direction approaching the X-ray generation unit 104 and the direction moving away from the X-ray generation unit 104). , Through a vertical movement hole provided in the C-arm 103. I. 105 moves up and down.

Similarly, the general positioner includes a ceiling mounting portion 111 for mounting the positioner on a ceiling.
A support arm 112 having one end held by a ceiling mounting portion 111; and a C arm holder 113 provided on the other end of the support arm 112 for rotatably holding a substantially C-shaped C arm 117. , C-arm 117 are provided at opposite ends thereof, respectively.
I. 115 and an X-ray generation unit 114.

The C-arm 117 has I. I. 115 is moved up and down (the direction approaching the X-ray generator 114 and the X-ray generator 1
14 is provided, which controls the movement in the direction away from
6 through the vertical movement hole provided in the C arm 117 by the movement control of I.6. I. 115 moves up and down.

In such an arm system, a positioner to be used is selected according to a case part, and a common table 10 is used.
7 is rotated by 90 ° to 180 °, and photographing or the like is performed using a general positioner or a cardiac positioner alone. Thereby, each positioner can be installed in one room, so that hospital space can be made more efficient. Further, since each positioner can share a table or the like, resources can be made more efficient. .

On the other hand, as a conventional X-ray diagnostic apparatus, FIG.
2. Description of the Related Art An under-tube type television bed apparatus as shown in FIG.

The television couch apparatus includes an X-ray generation unit 121 provided inside a couch 124, a movable couch 122 movable along a longitudinal direction of the couch 124 and a short direction orthogonal thereto. The I.V.
I. 123.

[0012] In the case of taking a picture with this television bed apparatus, the moving table 122 is used for I.D. I. 123 is moved to a target part. As a result, the X-ray generation unit 121 provided inside the bed 124 has the I.D. I. It moves so as to face 123. And I. I. An image is taken by bringing the 123 into close contact with the target part.

Such a television bed apparatus is disclosed in I.I. I. 1
Since it is possible to bring the 23 into close contact with the target portion, it is possible to obtain a high-quality captured image without forcibly enlarging the optical information corresponding to the X-ray information. For this reason, it is mainly used for precise diagnosis of the digestive system in the supine position.

[0014]

Here, an X-ray diagnostic apparatus, which is a conventional general positioner, cardiac positioner and television bed apparatus, is disclosed in I.I. I. 105, 11
The field of view size (photographing size) is changed by changing the enlargement ratio of 5,121.
I. line detector I. Is used, so you can only change the field of view to a few limited sizes,
In addition, there is a problem that the resolution and the display magnification are uniquely determined by the selected visual field size.

[0015] Even if the field of view size is changed, the I.V. I. Since the size of the subject itself does not change, even if the size of the visual field is reduced, accessing the narrow part of the subject becomes difficult as ever.

In addition, I. I. Is deteriorated over time and needs to be replaced when it reaches the end of its life. I. It is necessary to remove the optical system and TV camera for replacement,
I have to rely on a service person who is an expert. For this reason, it is impossible for the user to perform the replacement alone, and there is a problem that the system cannot be quickly restored.

In a composite system including a general positioner and a cardiac positioner, the difference between each positioner is described in I.C. I. Only size. For this reason, I. I. If it can be exchanged for a different size, each positioner can be supplemented with one positioner, and a composite system can be constructed with one positioner.

Further, in a cardiac catheter examination, it is necessary to spatially follow complicated blood vessel travel, and it is general to perform fluoroscopic imaging using a biplane that simultaneously uses two positioners, a general positioner and a cardiac positioner. . The required field of view in a cardiac catheterization test is 9 inches, and high image quality is required so that the narrowing of blood vessels and the tip of a thin catheter can be visually recognized. Close fluoroscopic imaging is fundamental, but in this combined system, 12 inches to 16 inches are used. I. I. And 9 inches of I. I. Are used at the same time, so that the I.V. I. When comrades interfere with each other, I.D. I. May be difficult to adhere to each other. However, as described above, in this combined system, the user can use the I.D. I. Can not be replaced.

Further, the television bed apparatus is a large I.D. I. I.121 is used and I.I. I. There has been a growing demand for improvements in operability such as positioning of an optical system and followability. In addition, I. I. It is impossible for the user to replace it because it is large and heavy. I. Can not be replaced.

Further, since this television bed apparatus cannot take a large FFD, it is not suitable for photographing a chest or a surgical area, and it is necessary for an operator to approach a subject from both sides of the bed. In certain surgical procedures such as endoscopic examination under fluoroscopy, it is difficult to secure a space for application of equipment and a working space. Therefore, depending on the hospital, in addition to the under tube apparatus which is a television bed apparatus, an over tube apparatus Are prepared separately, so that they can flexibly respond according to the diagnostic use. Therefore, it is desired to provide a system having both functions of the under-tube device and the over-tube device.

The present invention has been made in view of the above-described problems, and has as its object to provide an X-ray diagnostic apparatus that can easily replace an X-ray detector with a desired size.

[0022]

To solve the above-mentioned problems, an X-ray diagnostic apparatus according to the present invention comprises: an X-ray generating means for generating X-rays for irradiating a subject; and an X-ray generating means. Solid state detecting means for changing the size of a field of view for forming an X-ray image corresponding to the X-rays emitted from the camera.

More specifically, the solid flat panel detecting means includes a plurality of solid flat panel detectors having different visual field sizes, and replacement attaching / detaching means for enabling each solid flat panel detector to be detached and exchanged. The field size and the like are changed by exchanging with a solid-state flat panel detector having a desired field size by the exchange attaching / detaching means.

Alternatively, the solid plane detecting means has a plurality of X-ray detecting surfaces having different visual field sizes, and is rotated by a rotating means such as a motor in accordance with a case part or the like to obtain a desired surface. The size of the field of view is changed by using the detection surface.

Further, for example, the field of view is changed by folding a plurality of solid planar detection pieces of a predetermined field of view that are mechanically and electrically connected by hinges, flexible cables, or the like. The visual field size is changed by mechanically and electrically connecting and dividing the solid flat surface detecting pieces through connection terminals provided on each solid flat surface detecting piece.

As a result, a large I.D.
I. Instead, small, thin, and light solid-state flat detectors are sometimes used as X-ray detectors, and different solid-state flat detectors with different visual field sizes, resolutions, dynamic ranges, etc. are selected according to the case or target site. However, it can be easily replaced at the user level. In addition, a single X-ray diagnostic apparatus can compensate for the need to introduce several types of systems depending on the resolution, dynamic range, and field size.

Further, since the solid-state flat detector can be easily attached and detached, the solid-state flat detector can be shared between other modalities, and the resources can be effectively used. In addition, for example, when the X-ray detector needs to be replaced between fluoroscopy and radiography, it is possible to immediately cope with such a case. It can be omitted.

Further, by selecting an X-ray detector having a small visual field size, it is possible to access a narrow place of the subject. For example, when used for surgery,
Accessibility can be improved such that the crotch can be easily seen through. In addition, when used for circulatory organs, it is possible to prevent the inconvenience of introducing a plurality of systems in order to flexibly respond according to the examination site,
It is possible to reduce the burden on the hospital from the economic aspect.

Here, when the field of view is changed, the X-ray diagnostic apparatus is required to control the X-ray aperture and the like corresponding to the solid plane detector. And system parameter storage means for storing system parameters which are information on the device. The system parameter storage means is provided in the solid-state flat panel detector or in the device.

For example, when the X-ray detector is replaced, the control means reads out the system parameters from the solid-state flat panel detector or from the system parameter storage means provided in the apparatus, and controls the X-ray detector. Control such as centering with the X-ray generation means is performed.

Alternatively, when a plurality of solid flat surface detecting pieces are folded, connected, and divided to change the field of view,
A control unit reads out system parameters from a system parameter storage unit provided in the apparatus and controls the centering and the like.

Thus, when the size of the visual field is changed,
The field of view of the X-ray detector, image acquisition parameters, X-ray aperture conditions, mechanical interference data, pixel density data, etc. can be automatically loaded into the device, and the user can exchange solid-state flat detectors. By simply performing such operations, complicated data transfer and the like due to the exchange and the like can be omitted.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the X-ray diagnostic apparatus according to the present invention will be described below in detail with reference to the drawings.

First, the X-ray diagnostic apparatus according to the present invention can be applied to an X-ray diagnostic apparatus (stationary holding apparatus) mounted on a ceiling in a room.

The X-ray diagnostic apparatus according to the first embodiment
As shown in FIG. 1, a ceiling mounting portion 1 for mounting the device on a ceiling, a support arm 2 having one end rotatably held about the first rotation axis by the ceiling mounting portion 1, On the other end side, a C-arm holder 3 held rotatably around a second rotation axis substantially orthogonal to the first rotation axis, and the C-arm holder 3
A substantially C-shaped C-arm 4 which is held so as to be slidable about a third rotation axis substantially orthogonal to the second rotation axis, and is opposed to both ends of the C-arm 4 respectively. And a 9-inch solid flat panel detector 6 and an X-ray generation unit 5.

The C-arm 4 is provided with an up-down drive moving mechanism 7, which causes the solid flat panel detector 6 provided on the C-arm 4 to approach the X-ray generation unit 5. The movement is controlled in the direction and in the direction away from the X-ray generation unit 5, respectively.

The solid-state flat panel detector 6 is constituted by two-dimensionally arranging X-ray detecting elements composed of pixels and thin film transistors (TFTs) in columns and rows in an array. The light is converted into visible light by the body, and charges corresponding to the visible light are formed by the photodiode and stored in the storage capacitor. The charge stored in the storage capacitor is read and output as an image signal for each line in a pixel unit.

Such a solid-state flat panel detector 6 can be formed thinner, lighter and more compact than an image intensifier (II), and its handling is easy.

Here, the X-ray diagnostic apparatus is configured such that a plurality of solid-state flat panel detectors 6 having different visual field sizes (imaging sizes) are exchanged and mounted in such a configuration.

More specifically, the back surface of each solid flat panel detector 6 (the surface opposite to the surface to which X-rays are irradiated) is shown in FIG.
(A) to (c), the cross-section of the connecting portion 1 having an anti-trapezoidal shape
0 is provided, and on the connecting surface of the vertical drive moving mechanism 7 with the solid flat panel detector 6, a support fixing section 11 and a replacement attaching / detaching mechanism 12 for making the solid flat panel detector 6 detachable are provided. ing.

As shown in FIG. 3 (a), the exchange mounting / removing mechanism 12 has a substantially equilateral triangular-shaped rotating support portion 20 which comes into contact with the slope of the anti-trapezoidal connecting portion 10 of the solid flat panel detector 6, and A detachable lever 21 provided on the side of the section 20 opposite to the side to which the solid flat panel detector 6 is connected, and a support member 22 having one end fixed to the vertical drive / movement mechanism 7 and the other end supporting the rotary support section 20 And a rotation shaft 23 that rotatably supports the rotation support portion 20 with the support member 22.

More specifically, the exchange mechanism 12 includes
As shown in FIG. 3A, the rotation support portion 20 is supported by being penetrated by a rotation shaft 26, and one end of the rotation shaft is rotatably supported by a support member 22. The rotation support section 20 and the support member 2
By providing a spring member 25 formed in a shape penetrated by the rotation shaft 26, the rotation support portion 20 is elastically supported. In addition, the rotation support portion 20
Is supported by the spring member 25 so that the bottom surface thereof is parallel to the connection surface of the solid-state flat panel detector 6 of the vertical drive movement mechanism 7.

Next, a description will be given of the operation of replacing and attaching / removing the solid flat panel detector 6 by such an exchange / attachment mechanism 12 for the solid flat panel detector 6.

First, when the solid state detector 6 is mounted on the vertical drive / movement mechanism 7, the edge of the connecting part 10 of the solid state detector 6 is hooked on the support fixing part 11 as shown in FIG. Then, one end of the solid flat panel detector 6 (one end of the connection part 10) is fixed by bringing the two into contact.

Next, in this state, when the other end of the solid flat panel detector 6 is pushed up to the vertical drive moving mechanism 7 side, FIG.
As shown in (2), the other end of the connection portion 10 and the rotation support portion 20 of the exchange mechanism 12 come into contact with each other. In a state where both are in contact,
When the solid flat panel detector 6 is further pushed up, the spring member 25
The rotation supporting portion 20 elastically supported by the rotating member rotates clockwise against the elastic force of the spring member 25, and the connecting portion 10 and the vertical drive moving mechanism 7 come into contact with each other. On this occasion,
The rotation support part 20 rotates counterclockwise by the elastic force of the spring member 25, and contacts the slope of the connection part 10.
The bottom surface returns to a position parallel to the connection surface of the vertical drive moving mechanism 7 with the solid flat panel detector 6.

As a result, as shown in FIG. 2 (c), the solid flat panel detector 6 is held by the support / fixing unit 11 and the exchange / detachment / removal mechanism 12 such that the anti-trapezoidal connection unit 10 is hooked. Thus, the solid flat panel detector 6 can be mounted on the vertical drive moving mechanism 7.

Next, when the solid flat panel detector 6 thus mounted is to be removed, the detachable lever 21 provided on the rotary support section 20 is rotated counterclockwise as shown in FIG. 2C. .

As a result, the rotation supporting portion 20 is detached from the other end of the connecting portion 10, and the rotating and supporting portion 20 moves from the supporting and fixing portion 11 to the connecting portion 10.
One end comes off. Thus, the solid flat panel detector 6 can be detached from the vertical drive moving mechanism 7.

When the solid state detector 6 is removed, the bottom surface of the rotary support portion 20 is parallel to the connecting surface of the vertical drive movement mechanism 7 with the solid state detector 6 due to the elastic force of the spring member 25. It returns to a certain position.

As described above, in the X-ray diagnostic apparatus, the connecting section 10 is provided on the solid flat panel detector 6 side, and the support fixing section 11 and the exchange attaching / detaching mechanism 12 are provided on the vertical drive moving mechanism 7 side.
Is provided. In addition, the I.V. I. Instead, the solid-state flat detector 6 that is lightweight, thin, compact, and easy to handle is used. Therefore, the user can select a plurality of solid flat panel detectors 6 having different visual field sizes, resolutions, dynamic ranges, and the like according to the case site and the like, and can easily replace the solid flat panel detectors 6.

For example, the X-ray diagnostic apparatus is used as a general positioner (general circulatory apparatus) by using a solid-state flat panel detector having a large field of view of 16 inches.
This 16-inch solid-state flat panel detector can be replaced with a 9-inch small-field solid-state flat panel detector so that it can be used as a cardiac positioner.

Further, for example, when the solid-state flat panel detector 6 needs to be replaced between fluoroscopy in which a small amount of X-rays are exposed and imaging is performed, and imaging in which a large amount of X-rays are exposed and imaging is performed. In this case, it is possible to immediately respond to this, and it is possible to omit a device dedicated to photographing (such as a film changer or a spot photographing device) which has been conventionally required.

Further, since the solid state flat detector 6 can be freely exchanged, the solid state flat detector 6 can be used not only by the X-ray diagnostic apparatus but also by other modalities. Effective utilization can be achieved.

If a solid flat panel detector having a small visual field size is selected, it is possible to easily access a narrow place of a patient. For example, in the case of a surgical use, it is easy to see through a hip joint. Can be performed, and accessibility can be improved.

In order to respond flexibly to each case and the like, the hospital had to introduce several types of systems having different visual field sizes, resolutions, dynamic ranges, and the like. Since the X-ray diagnostic apparatus can supplement the cost, it is possible to reduce the economic burden on the hospital side.

Next, a system parameter memory is provided in each of the solid state detectors 6 which can be exchanged as described above. For example, a field size, an image acquisition parameter, an X-ray aperture condition, defective pixel data, mechanical “System parameters” such as interference data are stored.

Specifically, as shown in FIG. 5, the “field size (detector size)” is the solid-state flat detector 6.
Is stored. For example, if the size of the visual field of the solid flat panel detector is six-section size used to indicate the size of a so-called photograph, "0001";
Four-bit data such as "0010" for a quarter cut size, "0011" for a large cut size, and "0101" for a half cut size are stored.

On the other hand, as shown in FIG.
The connection surface 6a of the connection portion 10 has a parameter terminal 31
Is provided on the connecting surface 7a of the vertical drive moving mechanism 7 with the solid flat panel detector 6. The parameter terminal 30 is engaged with the parameter terminal 31.

At the time of replacement of the solid state flat detector 6 described above,
The solid state detector 6 is replaced so that the parameter terminals 30 and 31 are engaged. When the solid-state flat panel detector 6 is replaced, the X-ray diagnostic apparatus reads the system parameters stored in the system parameter memory via the respective parameter terminals 30 and 31, and reads the system parameters from the controller (FIG. (Not shown).

The control device determines the movable range of the X-ray diaphragm in the X-ray generator 5 based on the X-ray diaphragm conditions, and moves the X-ray diaphragm within this determined movable range in accordance with the operation of the operator. The aperture driving mechanism is controlled as described above.

The controller performs mechanical contact determination at the time of rotational movement of the C-arm 4 and at the time of vertical movement of the solid flat panel detector 6 based on the mechanical interference data. The C-arm drive mechanism and the vertical movement drive mechanism 7 are controlled so that the C-arm 4 is rotated and the solid flat panel detector 6 is vertically moved in accordance with the operation of the operator. When the operator performs an operation to support the movement of each part in the direction in which the contact occurs, the control device stops the rotational movement of the C-arm 4 and the vertical movement of the solid flat panel detector 6 before each part makes contact. , So that contact of each part is prevented beforehand.

The control device also controls the solid-state flat panel detector 6 according to the visual field size, image acquisition parameters, and defective pixel data.
It is configured to switch a read control signal for reading an image signal from the solid state detector 6 and to switch a processing method of an image signal read from the solid-state flat panel detector 6.

Thus, when the solid state detector 6 is replaced, an appropriate read control signal and an image processing method suitable for the solid state detector 6 are automatically selected, so that an appropriate image can be easily obtained. it can.

Further, every time the solid flat panel detector 6 is replaced, troublesome work of exchanging and setting information unique to the solid flat panel detector 6 can be omitted, and the convenience of the X-ray diagnostic apparatus can be improved. Can be achieved.

The system parameters may be stored not in the solid-state flat panel detector 6 but in the X-ray diagnostic apparatus. In this case, the X-ray diagnostic apparatus stores in advance system parameters for each solid-state flat panel detector, and a parameter terminal corresponding to the system parameter is provided on the X-ray diagnostic apparatus side. At the time of attachment, the parameter terminal arrangement of the attached solid flat panel detector 6 is detected, and based on this detection result, the system parameters for each solid flat panel detector may be confirmed.

Next, in the above description of the first embodiment, a plurality of solid-state flat panel detectors having different visual field sizes and the like are prepared. It is possible to realize a plurality of different visual field sizes and the like with a container.

That is, as shown in FIG. 6A, two solid flat panel detectors 32 and 33 having different visual field sizes and the like are bonded back to back to form one solid flat panel detector. Then, by rotating one of the solid flat panel detectors 32 and 33 according to the case site or the like, it is possible to use one solid flat panel detector with two visual field sizes or the like.

As shown in FIG. 6B, two solid flat panel detectors 34 and 35 having different visual field sizes and the like are arranged close to adjacent surfaces of a rectangular parallelepiped, and rotated according to the case site and the like. By using one of the solid-state flat panel detectors 34 and 35, it is possible to use one solid-state flat panel detector with two visual field sizes or the like. In this case, if the solid-state flat panel detector 35 having a small visual field size or the like is selected,
For example, it can be adapted to a narrow place such as a hip joint. The solid flat detectors 34 and 35 may be provided in, for example, a triangular prism other than a rectangular parallelepiped.

As shown in FIG. 6 (c), the longitudinal ends of three solid flat panel detectors 36 to 38 each having the same rectangular visual field size or the like (or different visual field sizes) may be hinged. Each of the solid flat panel detectors 36 to 38 is electrically connected by a flexible cable or the like, and each of the solid flat panel detectors 36 to 38 is folded according to the case site. By using this, it is possible to realize the use of one solid-state flat panel detector in three visual field sizes and the like.

As shown in FIG. 6D, connection terminals are provided at the longitudinal ends of three solid flat panel detectors 39 to 40 having, for example, the same view size of a rectangular shape (different view sizes may be used). The solid flat panel detectors 39 to 40 are connected mechanically and electrically with connection terminals according to the case site and the like, so that three solid flat panel detectors can be used with one solid flat panel detector.
It can be used in two visual field sizes or the like.

Even if any of the solid-state flat panel detectors shown in FIGS. 6A to 6D is used, it is possible to perform imaging in different visual field sizes and the like. The effect can be obtained.

In the configuration shown in FIGS. 6 (c) and 6 (d), there is a concern that a junction portion between the solid-state flat detectors becomes a non-imageable portion and a noise-like line (dead line) is generated on a captured image. However, for example, when the X-ray diagnostic apparatus is used for surgery, it is only necessary to be able to grasp the positional relationship between the bone and the surgical instrument. Therefore, even if such a deadline occurs on the image, no problem occurs. Absent. In the case where importance is placed on the image quality, the dead line is interpolated by the pixels on both sides of the joint by image processing, so that the captured image can have high image quality.

The replacement of the solid-state flat panel detector may be performed manually or automatically according to the X-ray conditions and the setting of the diagnostic site.

Next, an X-ray diagnostic apparatus according to a second embodiment of the present invention will be described.

The X-ray diagnostic apparatus according to the second embodiment
A detector holder for accommodating solid-state flat panel detectors having different visual field sizes is provided.

The X-ray diagnostic apparatus according to the second embodiment has the same configuration as the X-ray diagnostic apparatus according to the first embodiment except that the detector holder is provided. The reference numerals of the portions indicating the same operation are referred to, and the duplicate description of the portions will be omitted.

That is, in the X-ray diagnostic apparatus according to the second embodiment, as shown in FIG. 7, a detector holder 50 for accommodating each solid-state flat panel detector 6 having a different visual field size is provided in an up-down drive moving mechanism 7. Have been. 2 (a) to 2 (c), the bottom surface of the detector holder 50 (the surface to which the X-rays are emitted from the X-ray generation unit 5) is provided with A mechanism 12 is provided to establish connection with each solid-state flat panel detector 6.

On one side of the detector holder 50,
A plurality of insertion ports 51 for inserting each solid flat panel detector 6
The solid flat panel detectors 6 are inserted through the insertion ports 51 so that the solid flat panel detectors 6 are housed in the detector holder 50.

Here, X using such a C-arm 4
When a solid-state flat panel detector is used as the X-ray detector in the X-ray diagnostic apparatus, the solid-state flat panel detector is based on the I.D. I. , The weight balance with the X-ray generator 5 is lost, and the torque required for each rotation (slide rotation, spindle rotation, support column rotation, etc.) increases, and as a result, a high-capacity prime mover is required, The device may be large and heavy.

However, this detector holder 50 has a total weight (weight of the vertical drive / movement mechanism 7 + weight of the detector holder 50+ The weight of the replacement solid planar detector 6 housed in the detector holder 50) is designed to be suspended from the weight of the X-ray generator 5.

In such an X-ray diagnostic apparatus, a user takes out a desired solid-state flat panel detector 6 from among the solid-state flat panel detectors 6 housed in the detector holder 50, and attaches this to the bottom surface of the detector holder 50. The support fixing part 1 provided in the part
1 and the replacement mechanism 12. Thereby, when replacing the solid state flat detector 6, the trouble of carrying the solid state flat detector 6 can be omitted, the replacement can be facilitated, and the solid state flat detector 6 is prevented from being damaged. Besides being possible, the same effects as those of the X-ray diagnostic apparatus according to the above-described first embodiment can be obtained.

Since the total weight of the detector holder 50 and the weight of the X-ray generation unit 5 when the solid flat panel detector 6 is stored are suspended, a lightweight solid flat panel detector can be used. The rotation of the C-arm 4 can be balanced while using the C-arm. Therefore, in order to balance the rotation of the C-arm 4, a “weight” such as a counterweight is separately provided.
Can be prevented.

In the X-ray diagnostic apparatus according to the second embodiment, the solid flat panel detector 6 is replaced manually. However, the replacement is performed by the vertical drive moving mechanism 7 or the detector holder 50. For example, a disc changer mechanism used in a CD player, a video disc player, or the like (selects one solid flat panel detector to be used from several types of solid flat panel detectors in a retracted position, and selects this solid flat panel detector May be provided from the evacuation position to the fluoroscopic position, and the replacement may be performed automatically.

Next, an X-ray diagnostic apparatus according to a third embodiment of the present invention will be described.

In the third embodiment, the X according to the present invention is used.
The line diagnostic apparatus is applied to a television bed system as shown in FIG.

That is, the television couch system according to the third embodiment includes a television couch device 70 in which an X-ray generator 66 is provided inside a couch 63, and a TV couch device 7.
In addition to the X-ray generation unit 66, the X-ray generation arm 71 irradiates the patient on the couch 63 with X-rays.

The X-ray generating section 66 provided inside the bed 63 of the television bed apparatus 70 is movable in the longitudinal direction of the bed 63 and in the short direction perpendicular thereto, depending on the part to be imaged. The movement is controlled.

Further, the television bed apparatus 70 is provided with a movable table 64 movable along the longitudinal direction of the bed 63 and the short direction perpendicular to the longitudinal direction. The movable table 64 has an X-ray generator 6 provided inside the bed 63.
6 is provided with a mounting hole 64a for mounting a solid-state flat panel detector 65 that receives an X-ray image corresponding to the X-rays emitted from 6. A portion of the movable table 64 where the solid flat panel detector 65 mounted via the mounting hole 64a contacts, and a section where the solid flat panel detector 65 mounted via the mounting hole 64a contacts the movable table 64. Are provided with respective parameter terminals, and each of the attached solid flat panel detectors 65 is provided with a parameter terminal.
The “system parameters” such as the visual field size are fetched through the respective parameter terminals in the same manner as described above, and control of each unit such as the X-ray aperture is performed.

The bed 63 has an X-ray generation arm 71.
A mounting hole 67 is provided for mounting a solid-state flat panel detector 65 that receives an X-ray image corresponding to the X-rays emitted from the device. The portion of the bed 63 where the solid flat panel detector 65 mounted via the mounting hole 67 abuts, and the mounting hole 6
Parameter terminals are provided at portions of the solid flat panel detector 65 attached via the bed 7 in contact with the bed 63, and the “system parameters” such as the visual field size of each mounted solid flat panel detector 65 are provided. In the same manner as described above, the data is fetched through the respective parameter terminals, and the respective units such as the X-ray aperture are controlled.

The X-ray generating arm 71 is attached to a mounting portion 60 movably held along a rail provided on a ceiling or the like.
An extendable telescopic arm 61 provided to be suspended from the mounting portion 60;
And an X-ray generation section 62 provided on the side opposite to the first mounting section 60.

With such a configuration, the television bed system can be used as an undertube device and an overtube device.

That is, when using the television bed system as an undertube device, the user selects a solid flat panel detector 65 having a desired visual field size or the like, and mounts it on the movable base 64 through the mounting hole 64a. I do. As a result, the system parameters of each of the attached solid flat panel detectors 65 are taken into the television bed apparatus 70 via the parameter terminals as described above, and the respective units are automatically set and controlled. Then, the user controls the movement of the X-ray generation unit 66 provided in the moving table 64 and the bed 63 in accordance with the case site and performs imaging. Thereby, the television bed system can be used as an under tube device.

When using the television bed system as an overtube device, the user selects a solid flat panel detector 65 having a desired visual field size or the like and mounts it on the bed 63 through the mounting hole 67. . As a result, the system parameters of each of the attached solid flat panel detectors 65 are taken into the television bed apparatus 70 via the parameter terminals as described above, and the respective units are automatically set and controlled. Next, the user controls the movement of the bed 63 according to the case site and the like, and also controls the movement of the X-ray generation arm 71 to perform imaging. Thereby, the television bed system can be used as an overtube device.

As described above, the television bed system is
In addition to selecting a solid flat panel detector 65 having a desired visual field size or the like and mounting it through the mounting hole 64a or the mounting hole 67, it is possible to perform optimal imaging according to the case site and the like. The same effect as in the first embodiment can be obtained. Further, the solid flat surface detector 65 is attached to the mounting hole 6.
The television bed system can be used as an overtube device by mounting the television bed system on a bed through X-ray irradiation using the X-ray generation arm 71 via the bed 7. Therefore, the TV bed system is
One unit can be used as an under-tube device and an over-tube device, which can reduce the economic burden on the hospital side.

Finally, the embodiments described above are only examples of the present invention. For this reason, it goes without saying that various modifications can be made according to the design and the like within a range not departing from the technical idea according to the present invention.

[0096]

As described above, the X-ray diagnostic apparatus according to the present invention uses solid-state flat panel detecting means as the X-ray detector and has a detector replacement / removal mechanism. It can be easily exchanged to one with a resolution and a desired dynamic range.

Further, since predetermined parameter information is stored for each solid plane detecting means, every time the solid plane detecting means is replaced, troublesome information such as inputting information on the replaced solid plane detecting means is required. Delivery and setting work can be omitted.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an appearance of an X-ray diagnostic apparatus according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining a replacement procedure of an X-ray detector of the X-ray diagnostic apparatus according to the first embodiment.

FIG. 3 is a view for explaining an exchange mechanism of an X-ray detector provided in the X-ray diagnostic apparatus according to the first embodiment;

FIG. 4 is a diagram showing an X-ray detector provided in the X-ray diagnostic apparatus according to the first embodiment and terminals provided on a detachable portion of the X-ray detector.

FIG. 5 is a diagram showing an example of parameters transferred when an X-ray detector is replaced in the X-ray diagnostic apparatus according to the first embodiment.

FIG. 6 is a diagram showing an example of an X-ray detector whose field of view size can be changed.

FIG. 7 is a diagram illustrating an appearance of an X-ray diagnostic apparatus according to a second embodiment of the present invention.

FIG. 8 is a diagram illustrating an appearance of a television bed system according to a third embodiment of the present invention.

FIG. 9 is a diagram showing an appearance of a conventional composite system including a general positioner and a cardiac positioner.

FIG. 10 is a diagram showing an appearance of a conventional television bed apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ceiling mounting part, 2 ... Support arm, 3 ... C arm holder, 4 ... C arm 5 ... X-ray generation part, 6 ... X-ray detection part, 7 ... Vertical drive movement mechanism, 10 ... Connection part 11 ... Support fixing Parts, 12 ... replacement attachment / detachment mechanism, 30, 31 ...
Parameter terminal 50: detector holder, 64a, 67: mounting hole, 62,
66: X-ray generating unit 70: TV bed apparatus, 71: X-ray generating arm

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masahiko Ono 1385-1 Shimoishigami, Otawara-shi, Tochigi Pref. Toshiba Nasu Plant

Claims (8)

[Claims] An X-ray generating means for generating X-rays for irradiating a subject, and a field size for forming an X-ray image corresponding to the X-rays emitted from the X-ray generating means can be changed. An X-ray diagnostic apparatus comprising: a solid flat surface detecting unit. 2. The solid-state flat panel detecting device according to claim 1, further comprising: a plurality of solid-state flat panel detectors having different visual field sizes; 2. The X-ray diagnostic apparatus according to 1. 3. The storage device according to claim 1, further comprising a storage unit provided on a side where each of said solid plane detection units is attached and detached, for storing each of said solid plane detection units.
The X-ray diagnostic apparatus according to claim 1. 4. The X-ray diagnosis according to claim 3, wherein the storage means has its own weight when each of the solid flat surface detection means is stored, corresponding to the X-ray generation means. apparatus. 5. The X plane according to claim 1, wherein said solid plane detecting means changes the field size by rotating a plurality of X-ray detection planes having different field sizes fixed to different planes. X-ray diagnostic device. 6. The X-ray diagnostic apparatus according to claim 1, wherein said solid plane detecting means changes a visual field size by folding a plurality of solid planar detecting pieces formed in a predetermined visual field size. 7. A system parameter storage means for storing a system parameter which is information on each of the solid plane detecting means, and when the solid plane detecting means is exchanged, the exchanged solid plane detection means is used from the system parameter storage means. 7. A control device according to claim 1, further comprising control means for reading a system parameter relating to the means and performing control according to the system parameter.
X-ray diagnostic device. 8. The apparatus according to claim 7, wherein said control means performs at least centering of the solid-plane detecting means and the X-ray generating means based on the read system parameter of the solid-plane detecting means. X-ray diagnostic device.