JP2000217808A - X-ray fluoroscope - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an X-ray fluoroscopic apparatus for appropriately setting an effective field of view of a flat panel X-ray sensor to a part of a subject. An object of the present invention is to provide an X-ray tube (3) for irradiating a subject (1) with X-rays, and an X-ray tube (3) disposed opposite to the X-ray tube (3) and transmitting X-rays of the subject (1). A planar flat panel X-ray sensor 2 to be detected, and a flat panel rotation system that changes a rotational position in a plane direction including an X-ray incident surface of the flat panel X-ray sensor 2 in accordance with an imaging or fluoroscopic part of the subject 1 ( The problem is solved by providing the rotation support member 5 and the flat panel driving unit 6).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an X-ray fluoroscopic apparatus having a long side and a short side and an X-ray incident surface having a planar X-ray detector (hereinafter referred to as a "flat panel X-ray sensor"). Involved
In particular, the present invention relates to an X-ray fluoroscopic apparatus which positions the flat panel X-ray sensor in a plane direction of an X-ray incident surface in accordance with the length and shape of a part of a subject to be X-rayed.

[0002]

2. Description of the Related Art Conventional X-ray fluoroscopy apparatuses use an X-ray film or an image intensifier (I.
I. ), X-ray information such as transmitted X-rays of the subject is converted into an image.

[0003] Also, "Roar Area X-ray Image Sensing Using a PBI Photo Conductor (Lar
ge area x-ray imagesensing using a PbI2
photoconductor), medical imaging (medi
cal imaging) 1998, physics of medical imaging
In recent years, X-ray detectors have been disclosed as flat panel X-rays capable of detecting X-ray information and directly converting the digital information into digital information due to advances in semiconductors, as disclosed in page 22-32, published February 22-24, 1998. Sensors came to be made.

A flat panel X-ray sensor does not need to be developed like an X-ray film, and an image can be observed immediately after photographing. In addition, the flat panel X-ray sensor
I. I. As in the case of I.I., there is no peculiar distortion at the periphery of the image. I. The size of the X-ray fluoroscopy apparatus can be reduced due to its small size as compared with I. I. Because the effective field of view for collecting a captured image or a perspective image is not circular, but is a planar shape having long sides and short sides such as rectangles,
I. I. There is an advantage that the effective field of view can be expanded as compared with.

[0005]

However, while the flat panel X-ray sensor has the advantages described in the prior art, the flat panel X-ray sensor has a rectangular or other shape, so that the effective field of view of the flat panel X-ray sensor can be reduced. There has been a problem that consideration must be given to properly setting the part of the subject.

More specifically, the conventional I.P. I. Then, the alignment with the part of the subject is performed by using the X-ray source, the subject, and the I.D. I. 3
It was good to adjust the distance of each person, but in order to maximize the widened effective field of view of the flat panel X-ray sensor, in addition to the adjustment of these distances, the longitudinal direction and the short- There has been a problem that consideration has to be given to alignment in the hand direction, and there are the following problems between the shape of the flat panel X-ray sensor and the display.

FIG. 11 shows an example in which a flat panel X-ray sensor is arranged on the chest (center of the bone) of the subject. The body axis direction of the subject 1 and the longitudinal direction of the flat panel X-ray sensor 2 are matched. Here is an example. In this example, diagnosis can be performed mainly on the skeleton. If you want to diagnose the left and right lung fields in addition to this bone,
As shown in FIG. 12, it is necessary to replace the flat panel X-ray sensor. FIG. 12 shows an example in which a flat panel X-ray sensor is arranged on the chest (center of the lung field) of the subject, and an example in which the body axis direction of the subject 1 matches the lateral direction of the flat panel X-ray sensor 2. Is shown. In FIG. 12, the longitudinal side of the flat panel X-ray sensor 2 is arranged in the lateral direction in the drawing, so that the subject 1
Can be diagnosed simultaneously with the osteotomy and left and right lung fields. The diagnostic image obtained in this manner is a display example as shown in FIGS. FIG. 13 shows a display example obtained by arranging the television monitor 14 in a vertical shape and obtaining an effective visual field shown in FIG. FIG. 14 shows a display example obtained by arranging the television monitor 14 in a vertical shape and obtaining the effective visual field of FIG. In this case, although the effective field of view of the flat panel X-ray sensor 2 in the horizontal direction of the drawing increases, the display area of the TV monitor 14 in the horizontal direction of the drawing does not increase. There was a problem that cannot be displayed.

Further, as shown in FIG. 14, since only the reduced image can be displayed even though the upper and lower portions of the television monitor are empty, there is a problem that the display area of the television monitor is not effectively used.

Further, as shown in FIG. 16, an image is taken along an organ or an organ of the subject without necessarily making the direction of the body axis of the subject coincide with the long side or the short side of the X-ray detector. It is possible. At this time, the body axis direction of the subject is in the direction indicated by the arrow in FIG. 17, and the examiner intuitively recognizes the body axis direction of the subject requires anatomical knowledge and skill in operation of the apparatus. However, there is a problem that it is difficult for an examiner who has little anatomical knowledge and experience in operating the apparatus.

An object of the present invention is to provide an X-ray fluoroscopic apparatus capable of appropriately setting the effective field of view of a flat panel X-ray sensor to a part of a subject.

Another object of the present invention is to provide an X-ray fluoroscopic apparatus capable of displaying the entire effective field of view without performing image reduction.

Another object of the present invention is to provide an X-ray fluoroscopic apparatus capable of effectively utilizing a display area of a display.

It is another object of the present invention to provide an X-ray fluoroscopic apparatus with improved operability that allows the direction of movement of the detector to be easily recognized.

[0014]

The above object is achieved by providing a subject with X
An X-ray source for irradiating an X-ray, a planar X-ray detector arranged to face the X-ray source and sandwiching the subject, and detecting a transmitted X-ray of the subject; This is achieved by an X-ray fluoroscopic apparatus comprising: detector position control means for changing a rotational position in a plane direction including an X-ray incident surface of the X-ray detector in accordance with the above-mentioned portion.

Further, in addition to the configuration of the X-ray fluoroscopic apparatus, the X-ray detector has a long side and a short side, and the X-ray incident surface is planar, and the X-ray detector has A display for displaying the detected transmitted X-ray image of the subject on a screen, and changing a rotational position of the X-ray detector in a planar direction including the screen in association with the rotational position of the display in a planar direction. The present invention is achieved by an X-ray fluoroscopic apparatus having a display position control means.

Further, an X-ray having a flat panel type X-ray sensor having different vertical and horizontal sizes and a sensor drive unit for changing the direction of the flat panel type X-ray sensor in accordance with the imaging or see-through portion of the subject This is achieved by a fluoroscope.

Further, a flat panel X-ray sensor having different vertical and horizontal sizes, a sensor driving section for changing the direction of the flat panel X-ray sensor in accordance with the imaging or see-through portion of the subject, and a flat panel X-ray sensor This is achieved by an X-ray fluoroscopic apparatus having a display driving unit that changes the direction of the display in accordance with the direction of the line sensor.

Further, in addition to the configuration of the X-ray fluoroscopic apparatus, an angle between one of a long side direction and a short side direction of the X-ray detector and a body axis direction of the subject is set. This is achieved by an X-ray fluoroscopic apparatus, comprising: an angle detecting means for detecting; and a display position setting means for setting a rotational position of the display position control means based on the detected angle.

Further, with respect to the rotation of the X-ray detector up to a preset angle, only the rotation of the display image is performed without rotating in the plane direction including the screen of the display, and the rotation exceeds the preset angle. This is achieved by an X-ray fluoroscopic apparatus characterized by comprising control means for performing rotation in the plane direction including the screen of the display device when the image is displayed.

Further, angle detecting means for detecting an angle between one of a long side direction and a short side direction of the X-ray detector and the body axis direction of the subject, and Means for displaying the body axis direction of the subject on the display based on the X-ray fluoroscopic imaging apparatus.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an X-ray fluoroscopic apparatus according to the present invention will be described with reference to the drawings.

<First Embodiment> First, the configuration of a first embodiment of the X-ray radiographic apparatus of the present invention will be described with reference to FIG.

FIG. 1 is a block diagram showing the configuration of a first embodiment of the X-ray radiography apparatus according to the present invention.

The X-ray radiography apparatus includes an X-ray tube 3 and a flat panel X-ray sensor 2 disposed to face the X-ray tube 3.
A bed 8 on which the subject 1 is to be placed; and a C-shaped arm unit 4 for attaching the flat panel X-ray sensor 2 to each end via the X-ray tube 3, the flat panel driving unit 6, and the rotation support member 5. And a leg 7 attached to the C-arm 4,
It has an operating device 10 for setting and operating operation information by the examiner, and a control unit 11 electrically connected to the operating device 10.

The X-ray tube 3 irradiates the subject 1 placed on the bed 8 with X-rays. The bed 8 can be freely adjusted in the longitudinal direction, the short direction, and the height direction from the floor 9 of the bed 8 while the subject 1 is placed thereon. Here, the part where the bed 8 is installed on the floor 9 is omitted because the drawing becomes complicated. The flat panel X-ray sensor 2 detects transmitted X-rays of the subject 1 and directly converts them into digital information.
The rotation support member 5 rotatably supports the flat panel X-ray sensor 2. The flat panel drive unit 6 rotates the flat panel X-ray sensor 2 via the rotation supporting member 5 freely in the plane direction. The C-arm 4 supports the X-ray tube 3 and the flat panel driving unit 6 so that the X-ray tube 3 and the flat panel X-ray sensor 2 are maintained facing each other. Leg 7
Supports the C-arm 4 at a predetermined height from the floor 9.
The operator 10 operates the flat panel X-ray sensor 2, the position information of the C-arm 4 or the bed 8 by the examiner, the X-ray tube 3
And setting information such as X-ray generation conditions. The control unit 11 controls the positions of the flat panel X-ray sensor 2, the C-arm unit 4, and the bed 8, and the X-ray generation conditions of the X-ray tube 3, based on the set amount of the operation device 10.

Next, the flat panel X-ray sensor 2 shown in FIG.
The configuration (flat panel rotation system) of the rotary member 5, the flat panel driving section 6, and the rotating member 5 will be described with reference to FIG.

FIG. 2 is a block diagram showing the configuration of the flat panel rotation system of FIG.

The flat panel rotation system includes a flat panel X-ray sensor 2, a rotation support member 5 attached to the flat panel X-ray sensor 2, and a flat panel drive unit 6 attached to the rotation support member 5.

The flat panel X-ray sensor 2 is rotatably supported by the rotation support member 5. The rotation support member 5 applies the rotation force from the flat panel drive unit 6 to the flat panel X.
The signal is transmitted to the line sensor 2. The flat panel drive unit 6 is electrically connected to the control unit 11 and outputs a control signal from the control unit 11 and electric power for driving the motor, and obtains the current rotation angle of the flat panel X-ray sensor 2 to obtain the position. A rotation control unit 6a that outputs a signal to the control unit 11, a motor 6b that is electrically connected to the rotation control unit 6a and is supplied with a control signal and power output by the rotation control unit 6a, and a rotation unit of the motor 6b. It has a motor gear 6c that is attached to output the rotational force of the motor 6b, and a drive gear 6d that is attached to the teeth of the motor gear 6c and that is attached so that the rotational force of the motor 6b is transmitted to the rotation support member 5. .

Next, the operation of the flat panel X-ray sensor in the first embodiment of the X-ray radiography apparatus according to the present invention will be described with reference to FIGS.

FIG. 3 is a sequence diagram of the flat panel rotation system of FIG. 2. FIG. 4 is an example of setting the flat panel X-ray sensor by matching the short direction of the flat panel X-ray sensor with the body axis direction of the subject. FIG. 5 is a diagram showing an example in which the flat panel X-ray sensor is set by making the longitudinal direction of the flat panel X-ray sensor coincide with the body axis direction of the subject. The examiner operates and sets the position information of the C-arm 4 and the bed 8 so that the flat panel X-ray sensor 2 can set a desired effective visual field. The control unit 11 controls the movement of the C-arm unit 4 and the bed 8 based on the position setting of the operating device 10.

Next, as shown in FIG.
The rotation angle information of the flat panel X-ray sensor 2 is operatively set on the operating device 10 so that the flat panel X-ray sensor 2 can be set to a more appropriate effective field of view depending on the part of the imaging or fluoroscopy.

More specifically, as shown in FIG. 4, the position 2a of the flat panel X-ray sensor 2 when the lung field is to be provided with an effective visual field in a wide area, and the flat panel X-ray sensor 2 when the abdomen is to be provided with an effective visual field. The rotation angle information such as the position 2b of
The operation is set so that the body axis direction of the subject 1 and the lateral direction of the flat panel X-ray sensor 2 match.

As shown in FIG. 5, the position 2c of the flat panel X-ray sensor when the head is to be used as an effective field of view,
The rotation angle information such as the position 2d of the flat panel X-ray sensor 2 when one lung is to be used as the effective field of view and the position 2e of the flat panel X-ray sensor 2 when one wants to use the thigh as the effective field of view are obtained from the subject 1. Body axis direction and flat panel X-ray sensor 2
The operation is set so that the longitudinal direction of them is the same.

The control unit 11 transmits a rotation angle control signal to the flat panel driving unit 6 based on the rotation setting of the flat panel X-ray sensor 2 and the currently set rotation angle. Then, the rotational force generated by the flat panel driving unit 6 is transmitted to the flat panel X-ray sensor 2 via the rotation support member 5, and the rotation angle of the flat panel X-ray sensor 2 is set.

After the positions of the C-arm 4, the bed 8 and the flat panel X-ray sensor 2 are set in this way, the examiner further applies a voltage (X-ray) to the X-ray tube 3 for generating X-rays. The tube voltage), current (tube current), and irradiation time are set in the operating device 10. The control unit 11 irradiates the subject 1 with X-rays based on the tube voltage, the tube current, and the irradiation time to the X-ray tube 3. X-rays transmitted through the subject 1 are detected by the flat panel X-ray sensor 2, and an X-ray transmission image is obtained as a captured image or a fluoroscopic image.

As described above, in the first embodiment, the effective field of view of the flat panel X-ray sensor is changed by changing the arrangement of the flat panel 2 according to the target area as shown in FIGS. It is possible to appropriately set the position of the subject, and to perform the diagnosis efficiently.

<Second Embodiment> First, the configuration of a second embodiment of the X-ray radioscopic apparatus of the present invention will be described with reference to FIG.

FIG. 6 is a block diagram showing the configuration of a second embodiment of the X-ray radiography apparatus according to the present invention. Here the first
The description of the second embodiment will be omitted, and only the main part of the second embodiment will be described.

The X-ray imaging fluoroscope includes an X-ray tube 3 and a flat panel X-ray sensor 2 disposed to face the X-ray tube 3.
A bed 8 on which the subject 1 is to be placed; and a C-shaped arm unit 4 for attaching the flat panel X-ray sensor 2 to each end via the X-ray tube 3, the flat panel driving unit 6, and the rotation support member 5. And a leg 7 attached to the C-arm 4,
An operating device 10 for setting operation information of the examiner, a control unit 11 electrically connected to the operating device 10, and an image processing unit 13 electrically connected to the flat panel X-ray sensor 2.
And a TV monitor 14 electrically connected to the control unit 11 and the image processing unit 13, a display driving unit 15, and a display driving unit 1.
6.

The operating device 10 sets and operates the display conditions of the television monitor 14 in addition to the information described in the first embodiment. The control unit 11 controls display conditions of the television monitor 14 in addition to the apparatus described in the first embodiment based on the set amount of the operation device 10. The image processing unit 13 transmits the transmitted X-rays of the subject 1 from the flat panel X-ray sensor 2 to the television monitor 1
In order to suitably display the image on the image No. 4, image processing such as a filter is performed. The television monitor 14 displays the image-processed transmitted X-rays of the subject 1 as a captured image or a fluoroscopic image.

Next, the configuration (display rotation system) of the television monitor 14, the display rotation support member 15, and the display drive unit 16 in FIG. 6 will be described with reference to FIG.

FIG. 7 is a block diagram showing the configuration of the display rotating system of FIG.

The display rotation system includes a television monitor 14 and a display rotation support member 15 attached to the television monitor 14.
And a display drive unit 16 attached to the display rotation support member 15.

The television monitor 14 is rotatably supported by the display rotation support member 15. Display rotation support member 15
Converts the rotational force from the display drive unit 16 to the television monitor 14.
To communicate. The display drive unit 16 is electrically connected to the control unit 11, outputs a control signal from the control unit 11 and power for driving the motor, and obtains the current rotation angle of the television monitor 14 and controls it as a position signal. A rotation control unit 16a that outputs to the unit 11, a motor 16b that is electrically connected to the rotation control unit 6a and is supplied with a control signal and power output by the rotation control unit 6a, and a motor that is attached to the rotation unit of the motor 16b. Pulley 16c that outputs rotational force of 16b
A belt 16d attached to the pulley 16c and attached at one end to transmit the rotational force of the motor 16b;
It has a pulley 16e attached to the other end of the belt 16d and linked to the display rotation support member 15.

Next, the operation of the television monitor associated with the flat panel X-ray sensor in the second embodiment of the X-ray radioscopic apparatus of the present invention will be described with reference to FIGS. 6, 8 to 10. .

FIG. 8 is a sequence diagram of the flat panel rotation system and the display rotation system of FIG. 7. FIG. 9 shows a television monitor when the short side direction of the flat panel X-ray sensor coincides with the body axis direction of the subject. FIG. 10 is a diagram showing an example in which the TV monitor is set to be vertically long when the longitudinal direction of the flat panel X-ray sensor is made to coincide with the body axis direction of the subject.

The examiner operates and sets the position information of the C-arm 4 and the bed 8 so that the flat panel X-ray sensor 2 can set a desired effective field of view. Control unit 1
1 controls the movement of the C-arm 4 and the bed 8 based on the position setting of the operating device 10.

Next, as shown in FIG.
The rotation angle information of the flat panel X-ray sensor 2 is operatively set on the operating device 10 so that the flat panel X-ray sensor 2 can be set to a more appropriate effective field of view depending on the part of the imaging or fluoroscopy. At this time, if the body axis direction of the subject 1 and the lateral direction of the flat panel X-ray sensor 2 are set to coincide with each other and the television monitor 14 is set to be vertically long, the control unit 11 The rotation angle of the panel X-ray sensor 2 is read, the rotation angle of the television monitor is read, and a control amount for rotating the television monitor 14 by 90 ° from portrait to landscape is supplied to the display driver 16. The display drive unit 16 rotates the television monitor 14 from the portrait orientation to the landscape orientation via the display rotation support unit 15.

In this way, as shown in FIG. 9, it is possible to display the television monitor 14 horizontally long in accordance with the arrangement of the flat panel X-ray sensor 2 when it is desired to make the lung field an effective field of view over a wide area.

Further, as shown in FIG. 10, when the vertebra is to be used as an effective field of view, it is possible to perform a vertical display in accordance with the arrangement of the flat panel X-ray sensor 2.

As described above, in the second embodiment, as shown in FIG. 9 and FIG. 10, the television monitor 14 according to the change in the arrangement of the flat panel 2 according to the target area.
Is automatically switched to portrait or landscape,
The entire effective field of view can be displayed without image reduction, and the display area of the display can be used effectively.

Although an example using the television monitor 14 as the display has been described, a semiconductor display, for example, a liquid crystal display, a plasma display, a TFT display, or the like may be used. In the case of the TFT display, the depth is smaller and the weight is smaller than that of the television monitor 14, so that the load on the rotary drive unit can be reduced in the present invention, which can further contribute to the reduction in size and weight of the X-ray fluoroscopic apparatus.

In addition, since the X-ray transmission data of the subject obtained in the effective field of view of the flat panel 2 can be used without waste, the inspection can be performed efficiently and
Since the number of times of imaging or fluoroscopy can be reduced, it is possible to contribute to a reduction in the exposure of the subject 1.

<Third and Fourth Embodiments> The first and fourth embodiments
In the second and the second embodiments, the C-arm on the floor is described. However, even if the leg supporting the C-arm has a leg rotation system capable of rotating with respect to the floor, It goes without saying that the present invention can be applied as the third and fourth embodiments. The third and fourth embodiments have the advantage that the flat panel X-ray sensor can be relatively rotated.

In the third and fourth embodiments, the flat panel rotation system attached to the flat panel X-ray sensor can be omitted, or the flat panel rotation system and the leg rotation system can be combined. Good. These embodiments have the advantage that the degree of freedom of movement of the flat panel X-ray sensor can be increased.

<Fifth and Sixth Embodiments> The first and sixth embodiments
It is needless to say that even if a wheel such as a caster is attached to the leg of the second embodiment and the floor has a C-shaped arm that can travel on the floor, it can be applied as the fifth and sixth embodiments, respectively. . The fifth and sixth embodiments can also be applied to a round-trip car type, an operating room carry-in type, a vehicle-mounted type, a see-through table type, and the like, and have an advantage in that diagnostic applications are expanded.

<Seventh and Eighth Embodiments> In addition, the first
It goes without saying that the second embodiment can also be applied as the seventh and eighth embodiments even when the C-arm is suspended from the ceiling. The seventh and eighth embodiments have the advantage that any of the X-ray fluoroscopic apparatuses according to the first and second embodiments can be installed according to the user's desire.

<Ninth and Tenth Embodiments> In the seventh and eighth embodiments, the C-shaped arm suspended from the ceiling has been described. It goes without saying that even those having a rotatable ceiling suspension rotating system can be applied as the ninth and tenth embodiments, respectively. The ninth and tenth embodiments have the advantage that the flat panel X-ray sensor can be relatively rotated. Also,
In the ninth and tenth embodiments, the flat panel rotation system attached to the flat panel X-ray sensor can be omitted, or the flat panel rotation system and the ceiling suspension rotation system can be combined. These embodiments have the advantage that the degree of freedom of movement of the flat panel X-ray sensor can be increased.

<Eleventh and twelfth embodiments>
Needless to say, even if the seventh embodiment and the eighth embodiment have wheels attached to the ceiling suspension portion and have a C-shaped arm portion capable of traveling on the ceiling, they can be applied as the eleventh and twelfth embodiments, respectively. Absent. The eleventh and twelfth embodiments have the advantage that any of the X-ray fluoroscopic apparatuses according to the fifth and sixth embodiments can be installed according to the user's desire.

<Thirteenth Embodiment> FIGS. 4 and 5
In the above, the flat panel X-ray sensor 2 is disposed so as to be parallel to either one of the long side or the short side thereof and the body axis direction of the subject 1. However, in angiography or the like, the blood vessel travels. It is desirable to arrange the sensor so that either one of the long side or the short side of the sensor is aligned with the direction.

FIG. 15 shows an example. The symbol in the figure is 1
Denotes a subject, 8 denotes a bed, and 2f denotes a flat panel X-ray sensor arranged along the iliac artery running from the abdomen to the lower limbs of the subject 1 at a predetermined angle with respect to the body axis direction. Reference numeral 2g denotes a flat panel X-ray sensor arranged so that the effective field of view is optimized by matching the long axis direction of the heart with the long side direction of the sensor.

The blood vessels of the subject 1 are in various running states depending on age, physique, malformation, etc., and the examiner should arrange the flat panel X-ray sensor at a position for diagnosis or treatment while viewing the image. Is effective for improving diagnostic efficiency.

FIG. 16 is an enlarged view of an example in which a flat panel X-ray sensor is arranged at a position of 2 g. 2h is a flat panel X-ray sensor arranged near the sternum where the heart is located.

FIG. 17 shows a display example of an X-ray transmission image obtained from the thus arranged flat panel X-ray sensor.
Reference numeral 14 in the figure is a television monitor. Here, the monitor has a vertically long arrangement in which long sides are arranged in the vertical direction of the drawing. In this case, the positional relationship between the flat panel X-ray sensor and the monitor is such that the effective field of view of the sensor can be displayed to the maximum.

In angiographic fluoroscopy or radiography, in order to inject a contrast agent into a blood vessel with a catheter, it is necessary to advance the distal end of the catheter from the blood vessel into which the catheter is inserted to the blood vessel to be fluoroscopically or radiographed. Since the examiner must pay close attention to the catheter tip, the effective visual field also needs to be linked with the movement of the tip so that the catheter tip is usually arranged at the center of the display screen. The linkage between the distal end portion of the catheter and the central arrangement of the display screen is mainly performed by the examiner moving on the bed 8 on which the examinee 1 is placed.

When the bed 8 is moved in the body axis direction of the subject in such a state of the flat panel X-ray sensor,
The flat panel X-ray sensor 2 relatively moves in the body axis direction, and accordingly, the display on the display also moves in one of the directions indicated by the arrows in FIG. When the flat panel X-ray sensor moves in this way, the examiner needs to determine the effective visual field associated with the movement depending on his / her own anatomical knowledge and operating experience of the apparatus. Operability is not good for few examiners.

An embodiment for solving this problem will be described with reference to FIG.

FIG. 21 shows an example of the configuration of an X-ray fluoroscopic apparatus according to this embodiment.

The X-ray fluoroscopic apparatus comprises an X-ray tube 3 for irradiating the subject 1 with X-rays, and a flat X-ray tube which is disposed opposite to the X-ray tube 3 and detects transmitted X-rays of the subject 1. A panel X-ray sensor 2, a bed 8 on which a subject is placed, and a flat panel X
A flat panel driving unit 6 for supporting the X-ray sensor 2 rotatably in its own plane direction, and a C-arm unit 4 for mounting the X-ray tube 3 and the flat panel driving unit 6 at their respective ends to support them.
A leg 7 for supporting the C-arm unit 4 at a predetermined height from the floor, and an operating device 10 for setting and operating operation information by the examiner
The X-ray tube 3, the flat panel driving unit 6, the image processing unit 13, the display driving unit 16, and the X-ray generator 18 are electrically connected to the operation device 10 and based on operation information set by the operation device 10. And a flat panel X-ray sensor 2 electrically connected to the flat panel X-ray sensor 2
Processing unit 13 that performs image processing on the transmitted X-rays detected in
A television monitor 14 electrically connected to the control unit 11 and the image processing unit 13 for displaying transmitted X-rays processed by the image processing unit 13 as a transmitted X-ray image, and a display for rotatably supporting the television monitor 14 Display rotation unit 15, a display driving unit 16 such as a motor interposed between the television monitor 14 and the display rotation support unit 15, the X-ray tube 3, and the X-ray An X-ray generator 18 that supplies electric power to the tube 3, and an image rotation processing unit 19 that is electrically connected to the flat panel X-ray sensor 2 and performs image rotation processing on transmitted X-rays detected by the flat panel X-ray sensor 2. And

The control unit 11 sets the rotation direction and angle information in the image rotation processing unit 19 in accordance with the operation amount from the operation device 10, and controls the television monitor 14 based on the set information as shown in FIG.
It is configured to determine whether to display as shown in FIG. 8 or to display as shown in FIG. 20, and display in the determined direction of the display.

Further, if a predetermined angle amount is previously determined to be, for example, 45 °, a control signal is transmitted from the control unit 11 to the display driving unit 16 to switch the long side direction and the short side direction of the television monitor 14. Good.

The control unit 11 transmits X-ray information from the X-ray generator 18, for example, X-ray generation energy.
The rotation process of the image or the long side direction and the short side direction of the television monitor 14 may be switched according to the X-ray information.

Further, a switch for switching between the long side direction and the short side direction of the television monitor 14 may be provided in the operating device, and the examiner may manually operate the switch.

Further, at least one or more control tables in which the setting of the switching angle is changed in accordance with the site for obtaining the X-ray transmission image or the procedure in the IVR are stored in advance in a memory or the like readable by the control unit. Then, the table may be selected by the operating device 10 and the control method may be changed based on the selection.

According to the configuration described above, the flat panel X-ray sensor is arranged so that the long axis direction of the heart is aligned with the long side direction of the sensor, and the television monitor 14 is aligned with the body axis of the subject 1 in the long side direction. As shown in FIG.
And an X-ray transmission image is displayed as shown in FIG. With this display, the long side direction of the television monitor 14 coincides with the body axis direction of the subject 1, so that even the examiner with little experience or the like can intuitively determine the next effective visual field that has moved. can do.

Further, as shown in FIG.
When the angle between the short side of the line sensor 2j and the body axis of the subject 1 is small, for example, when the angle is smaller than 45 °, the television monitor 14 is moved to the position where the body axis of the subject 1 and the short side are aligned. The display driver 16 shown in FIG.
If the X-ray transmission image is displayed as shown in FIG. 0, a wider range of the X-ray transmission image can be displayed. In the figure, reference numeral 14 denotes a television monitor, and 17 denotes a detection area.

As an example of this application, "perspective" for obtaining an X-ray transmission image with relatively weak X-ray energy for searching for a lesion is advanced by moving the catheter to the lesion by the display method shown in FIG. If the “photographing” of obtaining an X-ray transmission image with relatively strong X-ray energy for capturing a high-quality image of a lesion is performed by the display method shown in FIG. 17, a series of high-quality images with good operability can be obtained. A fluoroscopic image can be obtained.

Further, since the data of the flat panel X-ray sensor is sequentially stored, even if the data is missing on the television monitor 14, if the stored images are sequentially read and displayed on the television monitor 14, It is also possible to reproduce an image as shown in FIG.

<Fourteenth Embodiment> A flat panel drive unit 6 for rotating and driving the flat panel X-ray sensor 2
Then, the positional relationship between the subject 1 and the body axis direction is detected, and the body axis direction indicated by an arrow and the X-ray transmission image are displayed on the television monitor 14, for example.

More specifically, the display memory for storing images and arrows displayed on the television monitor 14 includes an image memory for storing images and a graphic memory for storing arrows. The displacement of the flat panel drive unit 6 is transmitted to the control unit 11, and the control unit 11 draws an arrow corresponding to the displacement in the graphic memory. Then, on the television monitor 14, the image and the arrow read from the image memory and the graphic memory are combined and displayed.

Thus, the image as shown in the thirteenth embodiment is not lost, and the examiner can also recognize the body axis direction of the subject 1.

The embodiments described above are only some examples of achieving the object of the invention, and it is needless to say that any technique that does not depart from the technical idea of the invention is included in the invention. is there.

[0084]

The present invention has the effect of providing an X-ray fluoroscopic apparatus that appropriately sets the effective field of view of a flat panel X-ray sensor to a part of a subject.

Further, there is an effect that an X-ray fluoroscopic apparatus capable of displaying the entire effective visual field without performing image reduction is provided.

Further, there is an effect that an X-ray fluoroscopic apparatus capable of effectively utilizing the display area of the display is provided.

Also, there is an effect of providing an X-ray fluoroscopic apparatus with improved operability in which the moving direction of the detector can be easily recognized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a first embodiment of an X-ray radioscopic apparatus according to the present invention.

FIG. 2 is a block diagram showing a configuration of a flat panel rotation system in FIG. 1;

FIG. 3 is a sequence diagram of the flat panel rotation system of FIG. 2;

FIG. 4 is a diagram showing an example of setting a flat panel X-ray sensor by making the short side direction of the flat panel X-ray sensor coincide with the body axis direction of a subject.

FIG. 5 is a diagram showing an example of setting a flat panel X-ray sensor by matching the longitudinal direction of the flat panel X-ray sensor with the body axis direction of a subject.

FIG. 6 is a block diagram showing a configuration of a second embodiment of the X-ray radioscopic apparatus according to the present invention.

FIG. 7 is a block diagram showing the configuration of the display rotating system of FIG. 6;

FIG. 8 is a sequence diagram of the flat panel rotation system and the display rotation system of FIG. 7;

FIG. 9 is a diagram showing an example in which the television monitor is set to be horizontally long when the short side direction of the flat panel X-ray sensor is aligned with the body axis direction of the subject.

FIG. 10 is a diagram showing an example in which a television monitor is set to be vertically long when a longitudinal direction of a flat panel X-ray sensor is made to coincide with a body axis direction of a subject.

FIG. 11 is a diagram illustrating an example in which a flat panel X-ray sensor is arranged on the chest of a subject, in which the body axis direction of the subject matches the longitudinal direction of the flat panel X-ray sensor.

FIG. 12 is a diagram showing an example in which a flat panel X-ray sensor is arranged on the chest of a subject, in which the direction of the body axis of the subject matches the lateral direction of the flat panel X-ray sensor.

FIG. 13 is a view showing a display example obtained by arranging the television monitor 14 in a vertical shape and obtaining an effective visual field in FIG. 11;

FIG. 14 is a view showing a display example obtained by arranging the television monitor 14 in a vertical shape and obtaining an effective visual field in FIG. 12;

FIG. 15 is a diagram showing an example in which the flat panel X-ray sensor 2 is arranged at an angle smaller than a predetermined angle with respect to the body axis direction of the subject 1.

FIG. 16 is an enlarged view of FIG.

FIG. 17 is a diagram showing an example of displaying an X-ray transmission image obtained by the flat panel X-ray sensor 2 arranged in FIG.

18 is a diagram showing an example in which an X-ray transmission image is displayed by making only the longitudinal direction of the television monitor 14 in FIG. 17 coincide with the body axis direction of the subject 1;

FIG. 19 is a diagram showing an example in which the flat panel X-ray sensor 2 is arranged at an angle that is equal to or larger than a predetermined angle with respect to the body axis direction of the subject 1.

FIG. 20 shows X obtained by the flat panel X-ray sensor of FIG.
The figure which shows the example which displays an X-ray transmission image by making the body-axis direction of the subject 1 correspond only to the short side direction of the television monitor 14 with respect to the X-ray transmission image.

FIG. 21 is a block diagram showing a configuration of a thirteenth embodiment of the X-ray imaging fluoroscopic apparatus of the present invention.

[Explanation of symbols]

 2 Flat panel X-ray sensor (X-ray detector) 3 X-ray tube 5 Rotation support member 6 Flat panel drive

Claims (3)

[Claims] 1. An X-ray source for irradiating a subject with X-rays, and a planar X-ray that is disposed opposite to the X-ray source with the subject interposed therebetween and detects transmitted X-rays of the subject. An X-ray fluoroscope comprising: a detector; and detector position control means for changing a rotational position in a plane direction including an X-ray incident surface of the X-ray detector in accordance with a portion of the detected transmitted X-ray. Shooting equipment. 2. An X-ray detector according to claim 1, wherein said X-ray detector has a long side and a short side, an X-ray incident surface thereof is planar, and a transmitted X-ray image of said subject detected by said X-ray detector. And a display position control means for changing the rotational position of the X-ray detector in the plane including the screen in association with the plane rotational position of the X-ray detector. The X-ray fluoroscopic apparatus according to claim 1, wherein 3. An angle detecting means for detecting an angle between one of a long side direction and a short side direction of the X-ray detector and a body axis direction of the subject, and 3. An X-ray fluoroscopic apparatus according to claim 2, further comprising a display position setting means for setting a rotational position of said display position control means based on said display position setting means.