JP5387829B2 - X-ray equipment - Google Patents

Description

  The present invention relates to an X-ray imaging apparatus, and more particularly to an X-ray imaging apparatus suitable for performing long imaging such as whole spine imaging and all lower limb imaging.

  As this type of X-ray imaging apparatus, for example, a top plate for supporting a subject in a supine position or an upright position, an X-ray tube and an X-ray detector arranged opposite to each other with the top plate interposed therebetween, and an X-ray tube An X-ray tube moving mechanism that supports and swings in a vertical plane, and an X-ray detector that supports the X-ray detector and moves parallel to the top plate following the swinging motion of the X-ray tube Some have a mechanism (see, for example, Patent Documents 1 and 2).

  In long-time imaging, first, the X-ray tube is moved to the imaging distance setting position in a direction perpendicular to the top plate, and data on that position is input to the X-ray imaging apparatus to set the imaging distance. . Next, at the imaging distance setting position, a light beam is irradiated from a projector for confirming the X-ray irradiation range built in the X-ray tube, and the X-ray tube is tilted manually by the operator, so that the length of the subject is increased. One end of the scale shooting range is illuminated. Then, the position determination button provided on the X-ray tube is pressed by the operator, and one end of the long imaging range is set. Furthermore, the X-ray tube is tilted in the opposite direction by the operator's manual operation, and the other end of the subject's long imaging range is illuminated by the light beam from the projector. Is pressed, and the other end of the long shooting range is set.

  Next, data on both end positions of the long imaging range, imaging distance data, a predetermined value of the length of the detection surface of the X-ray detector, and a predetermined length of the overlapping portion when the X-ray images are joined together The long imaging range is divided into a plurality of imaging ranges based on the value and a predetermined value of the distance between the X-ray detector and the top plate, and the X-ray irradiation range per imaging is determined, and the long imaging is performed. The initial position of the X-ray tube (position on the vertical line passing through the center of the long imaging range), the moving range, and data of each imaging position are calculated, and the X-ray detector corresponding to the moving range of the X-ray tube The data of the imaging position corresponding to each moving range and each imaging position of the X-ray tube is calculated.

  The X-ray tube and the X-ray detector are respectively moved from one end of the moving range to the other end, and during that time, the X-ray tube and the X-ray detector are exposed from the X-ray tube at a plurality of imaging positions including the imaging positions at both ends of the moving range. Each time, X-rays are emitted, and transmitted X-rays from the subject are detected by the X-ray detector, whereby a plurality of continuous X-ray images are acquired. The acquired plurality of X-ray images are sequentially joined together in an image processing unit, and a long X-ray image of the subject is generated and displayed on a monitor.

  Thus, the physician can observe the entire region of interest based on the combined X-ray image having a total field of view wider than the field of view of the individual X-ray images, so that long imaging is an effective X-ray. It is one of the photography methods.

However, in the conventional X-ray imaging apparatus, prior to long imaging, the operator manually operates the both ends of the long imaging range by visually observing the light beam emitted from the projector for checking the X-ray irradiation range. Therefore, even if the same operator's image of the same part of the same subject is taken by the same operator, the long imaging range fluctuates every time the image is taken, for example, the progress state of the subject's medical condition In addition, there was a problem that it was difficult to follow up the recovery state after surgery.
In addition, the maximum range in which the X-ray detector can move is limited due to the structure of the X-ray imaging apparatus. After setting one end of the long imaging range, when setting the other end, If the end exceeds the maximum movable range of the X-ray detector, an error occurs and the position cannot be set. However, since the operator cannot know in advance the position of the end of the maximum movable range of the X-ray detector, he must set the other end of the long imaging range depending on his own intuition. This was very complicated for the operator.

JP 2004-358254 A JP 2008-161593 A

  Accordingly, an object of the present invention is to enable an operator to easily and accurately set a long photographing range during long photographing.

In order to solve the above problems, the present invention provides an X-ray tube and an X-ray detector facing each other across a subject, and the X-ray tube is swung along the body axis of the subject. The X-ray detector is made to follow the X-ray tube and translated along the body axis of the subject so that the X-ray tube and the X-ray detector are photographed in a predetermined length. Move from one end of the moving range corresponding to the range toward the other end, while irradiating the subject with X-rays from the X-ray tube at a plurality of imaging positions including both ends of the moving range, By detecting transmitted X-rays from the subject by the X-ray detector, a plurality of continuous X-ray images are acquired, and the X-ray images of the subject are joined by joining them together. In an X-ray imaging apparatus for generating a line image, the X-ray inspection is performed from the X-ray tube. An imaging distance determining unit that records an imaging distance to the instrument and records data related to the imaging distance, an imaging that determines the long imaging range, and the moving range of the X-ray tube and the X-ray detector A range determining unit, wherein the imaging range determining unit is configured to preset one end position data input unit for receiving data of a position of one end of the long imaging range and a moving path of the X-ray detector. Based on the fixed position data, the data of the position of one end of the long shooting range, and the data related to the shooting distance, the data of the position of the other end of the long shooting range is calculated, and the long A position data calculation unit that calculates data of positions at both ends of the moving range of the X-ray tube and the X-ray detector corresponding to the X-ray imaging range. is there.
In this configuration, the preset fixed position on the movement path of the X-ray detector is set at the other end side of the long imaging range among both ends of the preset maximum movable range of the X-ray detector. It is preferable to set the position of the end at the position.

  In order to solve the above-described problems, the present invention also provides an X-ray tube and an X-ray detector that are opposed to each other with a subject interposed therebetween, and the X-ray tube is swung along the body axis of the subject. The X-ray detector is moved or translated, and the X-ray detector is caused to follow the X-ray tube to be translated along the body axis of the subject. The X-ray tube is irradiated with X-rays at a plurality of imaging positions including both ends of the moving range while moving from one end to the other end of the moving range corresponding to the scale imaging range. Then, by detecting transmitted X-rays from the subject by the X-ray detector, a plurality of continuous X-ray images are acquired, and the X-ray images are joined together to obtain the length of the subject. In an X-ray imaging apparatus that generates a scale X-ray image, from the X-ray tube, An imaging distance to the line detector is determined, an imaging distance determining unit that records data relating to the imaging distance, the long imaging range, and the moving range of the X-ray tube and the X-ray detector are determined. A shooting range determination unit that performs input of data on the length of a shooting range per shot and data on the number of shots, and the like. One end position data input unit that receives input of one end position data, a predetermined value of the length of the overlapping portion when connecting the length of the photographing range per one photographing and the number of photographing data, and the X-ray image The length of the long shooting range is calculated based on the length of the long shooting range, the data of the position of one end of the long shooting range, and the data of the shooting distance. A position data calculation unit that calculates data of the position of the other end of the long imaging range and data of positions of both ends of the moving range of the X-ray tube and the X-ray detector corresponding to the long imaging range The X-ray imaging apparatus is characterized by comprising:

In order to solve the above-described problems, the present invention also provides an X-ray tube and an X-ray detector that are opposed to each other with a subject interposed therebetween, and the X-ray tube is swung along the body axis of the subject. The X-ray detector is caused to move, and the X-ray detector is caused to follow the X-ray tube to be translated along the body axis of the subject so that the X-ray tube and the X-ray detector are moved in a predetermined long imaging range. The X-ray tube irradiates the subject with X-rays at a plurality of imaging positions including both ends of the moving range, while moving from one end to the other end of the moving range corresponding to By detecting transmitted X-rays from the subject with the X-ray detector, a plurality of continuous X-ray images are acquired, and the X-ray images of the subject are joined together to obtain long X-rays of the subject. An operation method of an X-ray imaging apparatus for generating an image, wherein (1) the X-ray tube performs imaging When the shooting distance is set by being moved to the remote setting position, data relating to the shooting distance is recorded. (2) When the position of one end of the long shooting range is set, one end of the long shooting range is recorded. Position data is recorded, (3) data of a preset fixed position on the movement path of the X-ray detector is acquired, (4) position data of one end of the long imaging range, and the X Based on the data of the preset fixed position on the moving path of the line detector and the data on the imaging distance, the moving range of the X-ray tube is bisected by a perpendicular to the body axis of the subject. The data of the initial position of the X-ray tube and the data of the positions of both ends of the moving range of the X-ray tube are calculated, the data of the position of the other end of the long imaging range, and the X-ray detection Data of the position of both ends of the moving range of the container It is obtained by constituting the method comprising and.
In this configuration, the preset fixed position on the movement path of the X-ray detector is set at the other end side of the long imaging range among both ends of the preset maximum movable range of the X-ray detector. It is preferable to set the position of the end at the position.

In order to solve the above-described problems, the present invention also provides an X-ray tube and an X-ray detector that are opposed to each other with a subject interposed therebetween, and the X-ray tube is swung along the body axis of the subject. The X-ray detector is caused to move, and the X-ray detector is caused to follow the X-ray tube to be translated along the body axis of the subject so that the X-ray tube and the X-ray detector are moved in a predetermined long imaging range. The X-ray tube irradiates the subject with X-rays at a plurality of imaging positions including both ends of the moving range, while moving from one end to the other end of the moving range corresponding to By detecting transmitted X-rays from the subject with the X-ray detector, a plurality of continuous X-ray images are acquired, and the X-ray images of the subject are joined together to obtain long X-rays of the subject. An operation method of an X-ray imaging apparatus for generating an image, wherein (1) the X-ray tube performs imaging When the shooting distance is set by moving to the remote setting position, the shooting distance setting position data and the shooting distance data are recorded, and (2) the position of one end of the long shooting range is set. , Recording the data of the position of one end of the long shooting range, (3) based on the data of the shooting distance setting position, the data of the position of one end of the long shooting range , and the data related to the shooting distance, Data on the position of one end of the moving range of the X-ray detector corresponding to one end of the long imaging range at the imaging distance setting position, and data on the position of one end of the moving range of the X-ray detector corresponding thereto (4) acquiring data of a preset fixed position on the movement path of the X-ray detector, and (5) data of the imaging distance setting position and the movement path of the X-ray detector. Of the above Based on the fixed position data and the data related to the imaging distance, data on the position of the other end of the moving range of the X-ray tube corresponding to the other end of the long imaging range at the imaging distance setting position; A method of calculating data corresponding to the position of the other end of the movement range of the X-ray detector corresponding thereto is configured.
In this configuration, the preset fixed position on the movement path of the X-ray detector is set at the other end side of the long imaging range among both ends of the preset maximum movable range of the X-ray detector. It is preferable to set the position of the end at the position.

  In order to solve the above-described problems, the present invention also provides an X-ray tube and an X-ray detector that are opposed to each other with a subject interposed therebetween, and the X-ray tube is swung along the body axis of the subject. The X-ray detector is caused to move, and the X-ray detector is made to follow the X-ray tube so that the X-ray detector can be translated along the body axis of the subject. Move from one end of the moving range corresponding to the range toward the other end, while irradiating the subject with X-rays from the X-ray tube at a plurality of imaging positions including both ends of the moving range, By detecting transmitted X-rays from the subject by the X-ray detector, a plurality of continuous X-ray images are acquired, and the X-ray images of the subject are joined by joining them together. An operation method of an X-ray imaging apparatus for generating a line image, wherein (1) the X-ray tube is When the shooting distance is set by moving to the shadow distance setting position, data relating to the shooting distance is recorded, and (2) the length of the shooting range per shot, the number of shots, and the overlap when joining X-ray images The length of the long shooting range is calculated based on a predetermined value of the length of the portion, and the data of the position of the other end of the long shooting range is calculated using the length data of the long shooting range. (3) when the position of one end of the long shooting range is set, the data of the position of one end of the long shooting range is recorded; and (4) the data of the position of one end of the long shooting range; Based on the data related to the imaging distance, data on the initial position of the X-ray tube such that the moving range of the X-ray tube is divided into two equal parts with respect to the body axis of the subject, and movement of the X-ray tube Calculate the position data at both ends of the range and It is obtained by constituting the method characterized by calculating the data of the positions of both ends of the movement range of the X-ray detector.

  In order to solve the above-described problems, the present invention also provides an X-ray tube and an X-ray detector that are opposed to each other with a subject interposed therebetween, and the X-ray tube is swung along the body axis of the subject. The X-ray detector is caused to move, and the X-ray detector is caused to follow the X-ray tube to be translated along the body axis of the subject so that the X-ray tube and the X-ray detector are moved in a predetermined long imaging range. The X-ray tube irradiates the subject with X-rays at a plurality of imaging positions including both ends of the moving range, while moving from one end to the other end of the moving range corresponding to By detecting transmitted X-rays from the subject with the X-ray detector, a plurality of continuous X-ray images are acquired, and the X-ray images of the subject are joined together to obtain long X-rays of the subject. An operation method of an X-ray imaging apparatus for generating an image, wherein (1) the X-ray tube performs imaging When the shooting distance is set by moving to the remote setting position, the shooting distance setting position data and the shooting distance data are recorded, and (2) the position of one end of the long shooting range is set. And (3) based on data on the shooting distance setting position, data on the position of one end of the long shooting range, and data on the shooting distance. Data of the position of one end of the moving range of the X-ray tube corresponding to one end of the long imaging range at the imaging distance setting position, and data of the position of one end of the moving range of the X-ray detector corresponding thereto (4) calculating the length of the long imaging range based on a predetermined value of the length of the imaging range per imaging, the number of imaging images and the length of the overlapping portion when the X-ray images are joined together, The long A step of calculating data of a position of the other end of the long shooting range using data of a length of the shadow range; (5) data of the shooting distance setting position and a position of the other end of the long shooting range; And the data on the other end of the moving range of the X-ray tube corresponding to the other end of the long imaging range at the imaging distance setting position, and the corresponding X The method is characterized by calculating data on the position of the other end of the movement range of the line detector.

  According to the present invention, when data on the position of one end of the long imaging range is input, movement of the X-ray detector such as data on the position of the other end of the preset maximum movable range of the X-ray detector is performed. Calculate the data of the position of the other end of the long shooting range by using the data of the preset fixed position on the route or by using the data of the shooting range length and the number of shots per shooting. Therefore, in long shooting, simply set the shooting distance and the position of one end of the long shooting range of the subject manually, and the position of the other end of the long shooting range and this long shooting The positions of both ends of the moving range of the X-ray tube and the X-ray detector corresponding to the range are automatically set. As a result, the setting of the long shooting range by the operator becomes very simple, the shooting time can be shortened, and the long shooting range of the subject may fluctuate with each long shooting. Thus, it is possible to accurately observe the progress of the medical condition of the subject and the recovery state after the operation.

1 is a block diagram of an X-ray imaging apparatus according to a first embodiment of the present invention. It is a figure explaining the determination method of the moving range of a long imaging | photography range and a corresponding X-ray tube and an X-ray detector in the X-ray imaging apparatus of FIG. It is a figure similar to FIG. 2 explaining another method for obtaining the position of the upper end of the long photographing range. It is the figure which expanded the upper end side of the long imaging | photography range of FIG.2 (B), and is a figure explaining the calculation method of the position of the both ends of the movement range of the X-ray tube by a position data calculation part. It is a figure explaining the determination method of the long imaging | photography range and the movement range of a corresponding X-ray tube and an X-ray detector when an imaging distance setting position is made into the initial position of the X-ray tube at the time of long imaging | photography. It is a flowchart explaining the setting operation | movement of the long imaging | photography range of the X-ray imaging apparatus of FIG. It is a figure explaining the determination method of the long imaging | photography range and the movement range of the X-ray tube and X-ray detector corresponding to it in the X-ray imaging apparatus by 2nd Example. It is a flowchart explaining the setting operation | movement of the long imaging | photography range in the X-ray imaging apparatus by 2nd Example of this invention. It is a block diagram of the X-ray imaging apparatus by 3rd Example of this invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram of an X-ray imaging apparatus according to a first embodiment of the present invention. In this embodiment, the X-ray imaging apparatus has a configuration in which the X-ray tube swings around its focal point along the body axis of the subject during long imaging.
With reference to FIG. 1, the X-ray imaging apparatus includes a base 19 on which a partition 1 made of an X-ray transmitting material is erected. Then, the subject M stands on the base 19 in front of the partition 1 during the long photographing. In the case of a configuration in which the subject M taking the prone position is photographed long, a top plate for supporting the subject in the prone position is provided instead of the partition 1.
The X-ray imaging apparatus is also disposed in front of the partition 1 and irradiates the subject M with X-rays 2. The X-ray imaging apparatus is disposed on the back side of the partition 1 and transmits X-rays from the subject M. The X-ray detector 3 is detected.

  The X-ray tube 2 includes a diaphragm 2a that limits the X-ray irradiation range. The X-ray detector 3 is a flat panel X-ray detector (FPD). As an X-ray detector, an image intensifier tube (II) and a TV camera can be used instead of the FPD.

  A high voltage power supply device 6 is connected to the X-ray tube 2, and the X-ray tube 2 is supported by an X-ray tube moving mechanism 4, is movable in the horizontal and vertical directions to the initial position, and during long imaging, In the initial position, the head can swing around the body axis of the subject M around the focal point of the X-ray tube 2. The X-ray tube moving mechanism 4 includes a vertical position of the X-ray tube 2 (for example, a height from the floor surface), a horizontal position (for example, a distance from the detection surface of the X-ray detector 3), and a neck. A position detector 5 for detecting a swing angle (an angle formed by the center of the X-ray irradiated from the X-ray tube 2 with respect to the horizontal direction) is provided.

The X-ray detector 3 is supported by an X-ray detector moving mechanism 7, follows the movement of the X-ray tube 2 during long imaging, and is parallel (vertical direction) to the partition 1 and the subject. It is movable in the body axis direction of M. The X-ray detector moving mechanism 7 is provided with a position detector 8 that detects the position of the X-ray detector 3 in the vertical direction.
The movable range of the X-ray tube 2 and the X-ray detector 3 is limited due to the structure of the X-ray imaging apparatus, and the X-ray tube 2 and the X-ray detector 3 can move only within the maximum movable range. Absent.

  The X-ray tube 2, the high-voltage power supply device 6, the X-ray tube moving mechanism 4 and the X-ray detector moving mechanism 7 are controlled by the control unit 9. The control unit 9 controls these devices and mechanisms based on various commands and data input from the operation unit 10. Further, the control unit 9 holds data of positions at both ends of the maximum movable range of the X-ray detector 3.

The X-ray imaging apparatus also determines an imaging distance D from the X-ray tube 2 to the X-ray detector 3 (detection surface), and data related to the imaging distance D (data on the imaging distance D and preset values) An imaging distance determining unit 11 that records data of the distance d between the X-ray detector 3 and the imaging surface 20, a long imaging range S along the body axis direction of the subject M, and an X-ray tube corresponding thereto. 2 and an imaging range determining unit 12 that determines a moving range of the X-ray detector 3.
The shooting range determination unit 12 includes a one-end position data input unit 13 that receives input of position data of one end of the long shooting range S. The one-end position data input unit 13 includes a projector for checking an X-ray irradiation range built in the X-ray tube 2 and two position determination buttons (an upper position determination button and a lower end) provided on the operation panel of the X-ray tube 2. Position determination button).

  The imaging range determination unit 12 also reads from the control unit 9 the data of the position of the end on the other end side of the long imaging range S out of both ends of the maximum movable range L of the X-ray detector 3, Based on the read position data and data related to the imaging distance D, the position data of the other end of the long imaging range S is calculated, and the X-ray tube 2 and X-ray detection corresponding to the long imaging range S are calculated. It has a position data calculation unit 14 for calculating data of positions at both ends of the moving range of the device 3.

  Next, a method for determining the long imaging range S by the imaging range determination unit 12 and the corresponding movement range of the X-ray tube 2 and the X-ray detector 3 will be described. FIG. 2 is a diagram for explaining a method for determining the long photographing range S and the corresponding moving range. In FIG. 2, the floor is the origin, the x-axis is set in the horizontal direction, and the y-axis is set in the vertical direction along the moving direction of the X-ray detector. In FIG. 2, L represents the maximum movable range (upper end W1, lower end W2) of the X-ray detector 3, point Q ′ represents the imaging distance setting position of the X-ray tube 2, and point Q represents the X-ray. The initial position of the tube 2 is represented, the points A and B represent the upper end and the lower end of the long imaging range S, respectively, and the point C represents the upper end of the moving range of the X-ray detector 3. In this example, when the upper end A of the long imaging range S is set, the lower end B of the long imaging range S and the corresponding ends of the movement range of the X-ray tube 2 and the X-ray detector 3 are automatically set. Shall be set to

  First, referring to FIG. 2A, the X-ray tube 2 is moved manually to the imaging distance setting position Q ′ by the operator, and the imaging distance setting button (not shown) of the X-ray tube 2 is pressed by the operator. It is. At this time, the imaging distance determining unit 11 receives the detection signal of the position detector 5 and records the vertical position and the horizontal position of the X-ray tube 2 respectively. Further, the imaging distance determining unit 11 determines the imaging distance D from the horizontal position of the X-ray detector 3 determined based on the detection signal of the position detector 8 and the horizontal position of the X-ray tube 2. Then, the data of the imaging distance D is recorded as data relating to the imaging distance D together with the data of the distance d between the X-ray detector 3 and the imaging surface 20 set in advance.

Next, a light beam is emitted from the projector of the X-ray tube 2 and the X-ray tube 2 is tilted manually by the operator at the imaging distance setting position Q ′ to illuminate the upper end A of the long imaging range S. The upper end position determination button of the X-ray tube 2 is pressed, and the position of the upper end A of the long imaging range S is set. At this time, the one-end position data input unit 13 receives the detection signal from the position detector 5 and receives the position y _{0 in} the vertical direction of the X-ray tube 2 and the swing angle α of the X-ray tube 2. Further, the one-end position data input unit 13 determines the vertical position of the upper end A of the long imaging range S based on those data and a preset distance d between the X-ray detector 3 and the imaging surface of the subject M. The direction position y ₂ is
y ₂ = y ₀ + (D−d) × tan α (1)
Ask for and record.
In addition, the position data calculation unit 14
y ₃ = y ₀ + D × tan α (2)
Thus, the vertical position y ₃ of the upper end C of the moving range of the X-ray detector 3 corresponding to the upper end A of the long imaging range S is obtained and recorded.

  In this embodiment, the one-end position data input unit 13 obtains the position data of the upper end A of the long imaging range S based on the swing angle α of the X-ray tube 2. Instead of the angle α, for example, a marker is slidably attached to a part of the X-ray detector moving mechanism 7 (for example, a detector support), and the height of the marker from the floor surface is detected by a detecting means. The position of the upper end A of the long photographing range S can be obtained by using the detected marker height data. FIG. 3 is a view similar to FIG. 2 for explaining a method of determining the position of the upper end A of the long photographing range in the case of the latter configuration.

In FIG. 3, the position of the marker when setting the upper end A of the long shooting range is C (y ₃ ),
(Y ₃ −y ₀ ) :( y ₂ −y ₀ ) = D: (D−d) (3)
Therefore, if equation (2) is solved for y ₂ ,
y ₂ = [(D−d) × y ₃ + d × y ₀ ] / D (4)
From this equation, the position y ₂ of the upper end A of the long photographing range is obtained.

Referring to FIG. 2B again, the position data calculation unit 14 determines from the control unit 9 in the vertical direction of the lower end W2 among the ends W1 and W2 of the maximum movable range L of the X-ray detector 3. It reads the position y _5, the y _5, the vertical position of the lower end of the movement range of the X-ray detector 3 which corresponds to the lower end B of the long region imaging range S. The position data calculation unit 14 further includes a vertical direction of an initial position Q of the X-ray tube 2 (in this embodiment, a position where the moving range of the X-ray tube 2 during long imaging is an equal angle θ up and down). The position y ₁ of
_{y 1 = y 5 + (y} 3 -y 5) / 2 (5)
Ask for and record.

The position data calculation unit 15 also calculates the vertical position y ₄ of the lower end B of the long shooting range S,
(Y ₃ −y ₅ ) :( y ₂ −y ₄ ) = D: (D−d) (6)
An expression derived from
_{y 4 = y 2 - (D} -d) / D × (y 3 -y 5) (7)
Ask for and record.

The position data calculation unit 15 further obtains positions (angle θ) at both ends of the moving range of the X-ray tube 2. FIG. 4 is an enlarged view of the upper end side of the long imaging range of FIG. 2B, and is a diagram for explaining a method of calculating the positions of both ends of the moving range of the X-ray tube by the position data calculation unit. Therefore, in FIG. 4, the same components as those in FIG. 2 are indicated by the same symbols as those in FIG. Referring to FIG. 4, on the upper end A side of the long imaging range, the X-ray irradiation range is represented by a line segment AJ (= u), one end of which is A (y ₂ ) and the other end is J (y ₇ ). if,
y ₇ = y ₂ −u (8)
If the position on the incident line of X-rays is point I (y ₆ ),
_{y 6 = y 2 -a (9} )
It is. Also, from the nature of the angle bisector,
a: b = √ [(D−d) ² + (y ₂ −y ₁ ) ² ]: √ [(D−d) ² + (y ₇ −y ₁ ) ² ]
Is established. Furthermore, from the proportional division of distance,
a = u × a / (a + b)
= U × √ [(D−d) ² + (y ₂ −y ₁ ) ² ] / [√ ((D−d) ² + (y ₂ −y ₁ ) ² ) + √ ((D−d) ² + (Y ₇ -y ₁ ) ² )]
= U × √ [(D−d) ² + (y ₂ −y ₁ ) ² ] / [√ ((D−d) ² + (y ₂ −y ₁ ) ² ) + √ ((D−d) ² + (Y ₂ −y ₁ −u) ² )] (10)
So,
y ₆ = y ₂ −u × √ [D ² + (y ₂ −y ₁ ) ² ] / [√ (D ² + (y ₂ −y ₁ ) ² ) + √ (D ² + (y ₂ −y ₁₎ -U) ² )] (11)
Is obtained. Therefore, the position of the upper end of the moving range of the X-ray tube 2 corresponding to the upper end A of the long imaging range is
θ = tan ⁻¹ [(y ₆ −y ₁ ) / (D−d)] (11)
It becomes.
From this equation, the position θ of the lower end of the moving range of the X-ray tube 2 is calculated in the same manner.
Thus, the imaging range determination unit 12 determines the long imaging range S and the movement range of the X-ray tube 2 and the X-ray detector 3 corresponding thereto.

In this embodiment, the initial position Q of the X-ray tube 2 at the time of long imaging is set to a position different from the imaging distance setting position Q ′, and the movement range of the X-ray tube 2 at the time of long imaging is set up and down. However, as shown in FIG. 5, the imaging distance setting position can be the initial position Q of the X-ray tube 2 during long imaging. In this case, the position y ₂ of the upper end A of the long imaging range S and the position y 3 of the upper end C of the movement range of the corresponding X-ray detector ₃ are obtained in the same manner as described above.

The lower end B of the maximum movement range of the X-ray detector 3, i.e. from position y ₅ of the lower end of the movement range of the X-ray detector 3 are known,
(Y ₃ −y ₅ ) :( y ₂ −y ₄ ) = D: (D−d) (12)
Than,
_{y 4 = y 2 + (D} -d) / D × (y 3 -y 5) (13)
From the position y ₄ of the lower end B of the long region imaging range is obtained.
Further, since the position y ₀ of the initial position Q ′ of the X-ray tube 2 is also known, the positions (angles β and γ) of both ends of the moving range of the X-ray tube 2 corresponding to both ends of the long imaging range are shown in FIG. 2 and similar to the case of FIG.

  FIG. 6 is a flowchart for explaining the setting operation of the long imaging range S of this X-ray imaging apparatus. Referring to FIG. 6, first, the X-ray tube 2 is moved manually to an imaging distance setting position by an operator, and an imaging distance setting button (not shown) of the X-ray tube 2 is pressed by the operator. At this time, the imaging distance determination unit 11 receives the detection signals from the position detector 5 and the position detector 8, calculates the imaging distance D from the X-ray tube 2 to the X-ray detector 3 (detection surface), and the imaging distance. The data of D is recorded as data relating to the imaging distance D together with the data of the distance d between the X-ray detector and the imaging surface determined in advance (step 1).

  Thereafter, the X-ray tube 2 is irradiated with a light beam from an X-ray irradiation range confirmation projector (not shown) built in the X-ray tube 2 and the X-ray tube 2 is tilted manually by the operator, so that the length of the subject M is long. One end of the photographing range, for example, the upper end is illuminated (step 2). Then, a position determination button (not shown) of the X-ray tube 2 is pressed by the operator, and at this time, the X-ray tube 2 input from the one-end position data input unit 13 of the imaging range determination unit 13 to the position data calculation unit 14. Based on the position and swing angle data, the position data of the upper end of the long photographing range S is calculated (step 3).

  Next, the position data calculation unit 15 of the imaging range determination unit 12 reads data of the position of the lower end of the maximum movable range L of the X-ray detector 3 from the control unit 9 (step 4). Further, the position data calculation unit 14 reads out the data of the lower end position of the maximum movable range of the X-ray detector 3, the data regarding the imaging distance D, and the data of the upper end position of the long imaging range S. Based on the above, the initial position of the X-ray tube 2 at the time of long photographing (in this case, the position where the moving range of the X-ray detector 3 becomes an equal angle up and down) and the lower end of the long photographing range S Position data and position data at both ends of the moving range of the X-ray tube 2 and X-ray detector 3 corresponding to the long imaging range S are calculated (step 5).

In this embodiment, when the upper end of the long imaging range S is set, the lower end of the long imaging range S and both ends of the moving range of the X-ray tube 2 and the X-ray detector 3 are automatically set. However, conversely, when the lower end of the long imaging range S is set, the upper end of the long imaging range S and both ends of the moving range of the X-ray tube 2 and the X-ray detector 3 are automatically set. It can also be made to set up automatically.
In addition, when one end of the long shooting range S is manually set and then the other end is manually set, the registration of the position data of the other end that has been automatically set is canceled, and the other is manually performed. The set position data of the other end is registered, and thereby the long imaging range S and the moving range of the X-ray tube 2 and the X-ray detector 3 are set.

  Referring to FIG. 1 again, the control unit 8 determines the data regarding the imaging distance D, the predetermined value of the length of the detection surface of the X-ray detector 3, and the length of the overlapping portion when the X-ray images are joined together. Based on the predetermined value, the long imaging range S and the X-ray tube 2 and the moving range of the X-ray detector 3 are divided, and the X-ray tube 2 includes the imaging positions at both ends of the long imaging range S, and Data of a plurality of imaging positions of the X-ray detector 3 is calculated, and control signals are transmitted to the X-ray tube 2, the X-ray tube moving mechanism 4, the high voltage power supply device 6 and the X-ray detector moving mechanism 7, and the X-ray tube 2 and the X-ray detector 3 are moved from one end to the other end of the moving range, and during that time, the subject M is irradiated with X-rays from the X-ray tube 2 at a plurality of imaging positions. The transmitted X-ray from the examiner M is detected by the X-ray detector 3.

  The X-ray imaging apparatus also reads a detection signal from the X-ray detector 3, acquires a plurality of continuous X-ray images, and connects the X-ray images to form a long X-ray image of the subject. An image processing unit 16 to be generated, an image memory 17 for storing X-ray image data generated by the image processing unit 16, and a monitor 18 connected to the image memory 17 are provided.

  In this way, the X-ray tube 2 and the X-ray detector 3 are moved from one end (I) to the other end (II) of the movement range along the body axis direction of the subject M. The subject M is irradiated with X-rays from the X-ray tube 2 at a plurality of imaging positions including imaging positions at both ends, and transmitted X-rays from the subject M are detected by the X-ray detector 3 each time. Then, the detection signal of the X-ray detector 3 is read by the image processing unit 16, and the image processing unit 16 acquires a plurality of continuous X-ray images based on the detection signal, and sequentially connects these X-ray images. Thus, a long X-ray image of the subject M is generated. The generated long X-ray image data is stored in the image memory 17, and the long X-ray image data of the subject M is read out from the image memory 17 by the monitor 18. It is displayed on the monitor 18.

  In the first embodiment described above, when one end of the long imaging range is set, the position of the other end of the long imaging range is determined based on the data of the positions of both ends of the maximum movable range of the X-ray detector. The positions of both ends of the moving range of the X-ray tube and the X-ray detector corresponding to the long imaging range are automatically set. According to the second embodiment of the present invention, the imaging range per imaging is set. The position of the other end of the long imaging range and the positions of both ends of the moving range of the X-ray tube and the X-ray detector are automatically set based on the data of the length and the number of images taken.

  In the above-described embodiment, when the other end of the long imaging range is automatically set after setting one end of the long imaging range, the long imaging range out of both ends of the maximum movable range of the X-ray detector 3 is set. The data of the position of the end on the other end side is used, but instead of this configuration, the data of the fixed position set in advance on the moving path of the X-ray detector 3 after setting one end of the long imaging range The same calculation as in the above-described embodiment can be used to automatically set the other end of the long photographing range.

  In the second embodiment, the shooting range determination unit 12 further includes a data input unit 15 such as the number of shots for receiving data of the length of the shooting range per shot and data of the number of shots. Only the configuration of the position data calculation unit 14 of the imaging range determination unit 12 is different from that of the first embodiment. Therefore, the block diagram showing the overall configuration of the second embodiment is almost the same as FIG. Therefore, the description of the same configuration as that of the embodiment of FIG. 1 is omitted below.

  FIG. 7 is a diagram for explaining the principle of determining the long imaging range S and the corresponding movement ranges of the X-ray tube 2 and the X-ray detector 3 in the second embodiment. In FIG. 7, as in FIG. 2, the floor is the origin, the x axis is set in the horizontal direction, and the y axis is set in the vertical direction along the moving direction of the X-ray detector. In FIG. 7, a point Q ′ represents an imaging distance setting position of the X-ray tube 2, a point Q represents an initial position of the X-ray tube 2, and points A and B respectively represent the long imaging range S. The upper end and the lower end are represented, and the point C and the point G represent the upper end and the lower end of the movement range of the X-ray detector 3, respectively. In this example, when the upper end A of the long imaging range S is set, the lower end B of the long imaging range S and the corresponding ends of the movement range of the X-ray tube 2 and the X-ray detector 3 are automatically set. Shall be set to

Referring to FIG. 7A, in the second embodiment, the shooting distance D is determined by the shooting distance determining unit 11 and data relating to the shooting distance D is recorded in the same manner as in the embodiment of FIG. , the end position data input unit 13 of the photographing range determination unit 12 is calculated vertical position y ₂ of the upper end a of the long region imaging range and the upper end of the moving range of the X-ray detector 3 by the position data calculation unit 14 position y ₃ in the vertical direction C is calculated.

According to the second embodiment, data of the shooting range length w and the number of shots N per shot is input to the shooting number etc. data input unit 15 of the shooting range determination unit 12, and the position data calculation unit 14 Based on the data of the imaging range length w and the number of imaging N per imaging and the predetermined value f of the overlapping portion length f when the X-ray images are joined together,
S = w × N−f × (N−1) (14)
To calculate the length S of the long photographing range.

Referring to FIG. 7B, the position data calculation unit 14 further
_{y 4 = y 2 -S (15} )
y ₁ = y ₂ −S / 2 (16)
To calculate the vertical position y ₄ of the lower end B of the long imaging range and the initial position Q ₁ of the initial position Q of the X-ray tube 2,
(Y ₃ −y ₅ ) :( y ₂ −y ₄ ) = D: (D−d) (17)
Y ₅ = y ₃ −D / (D−d) × (y ₂ −y ₄ ) (18)
Thus, the vertical position y ₅ of the lower end G of the movement range of the X-ray detector 3 is calculated.

Further, the position data calculation unit 14 calculates the positions (angle θ) of both ends of the moving range of the X-ray tube corresponding to both ends of the long imaging range in the same manner as in FIGS.
Thus, the imaging range determination unit 13 determines the long imaging range S and the movement range of the X-ray tube 2 and the X-ray detector 3 corresponding thereto.

  FIG. 8 is a flowchart for explaining the setting operation of the long imaging range S in this X-ray imaging apparatus. Referring to FIG. 8, first, the X-ray tube 2 is moved to the imaging distance setting position manually by the operator, and the imaging distance setting button (not shown) of the X-ray tube 2 is pushed by the operator. At this time, the detection signal of the position detector 5 is input to the imaging distance determination unit 11, the imaging distance D from the X-ray tube 2 to the X-ray detector 3 (detection surface) is calculated, and the data of the imaging distance D is Along with data on the distance d between the X-ray detector 3 and the imaging surface 20 set in advance, the data is recorded as data relating to the imaging distance D (step 1).

  In addition, data of the shooting range length w and the number of shots N per shot is input to the number of shots data input unit 15 (step 2). Then, the position data calculation unit 15 calculates the length of the long imaging range S from the w and N data and the predetermined value of the length f of the overlapping portion when the X-ray images are joined (step 3). ).

  Thereafter, the X-ray tube 2 is irradiated with a light beam from an X-ray irradiation range confirmation projector (not shown) built in the X-ray tube 2 and the X-ray tube 2 is tilted manually by the operator, so that the length of the subject M is long. One end of the photographing range, for example, the upper end is illuminated (step 4). Then, a position determination button (not shown) of the X-ray tube 2 is pressed by the operator. At this time, the position data input unit 13 of the imaging range determination unit 12 sends the position of the X-ray tube 2 to the position data calculation unit 14. The data of the swing angle is input, and the position data calculation unit 14 calculates the data of the position of the upper end of the long shooting range S based on the data (step 5).

  Further, the position data calculation unit 14 determines the length of the long shooting range S based on the length data of the long shooting range S, the position data of one end of the long shooting range S, and the data related to the shooting distance D. The data of the position of the lower end, the data of the initial position of the X-ray tube 2, and the data of the positions of both ends of the moving range of the X-ray tube 2 and the X-ray detector 3 corresponding to the long imaging range S are calculated ( Step 6).

  Also in this embodiment, as in the first embodiment, the control unit 8 is used to connect the data regarding the shooting distance D, the data of the shooting range length per shot and the number of shots, and the X-ray image. The long imaging range S and the movement range of the X-ray tube 2 and the X-ray detector 3 are divided based on the predetermined value of the length of the overlapping portion, and the imaging positions at both ends of the long imaging range S are included. The data of a plurality of imaging positions of the X-ray tube 2 and the X-ray detector 3 are calculated, and control signals are sent to the X-ray tube 2, the X-ray tube moving mechanism 4, the high-voltage power supply device 6 and the X-ray detector moving mechanism 7. The X-ray tube 2 and the X-ray detector 3 are moved from one end of the moving range to the other end while X-rays are irradiated from the X-ray tube 2 to the subject M at a plurality of imaging positions. Each time, the transmitted X-ray from the subject M is detected by the X-ray detector 3. Make.

  In this way, the X-ray tube 2 and the X-ray detector 3 are moved from one end (I) to the other end (II) of the movement range along the body axis direction of the subject M. The subject M is irradiated with X-rays from the X-ray tube 2 at a plurality of imaging positions including imaging positions at both ends, and transmitted X-rays from the subject M are detected by the X-ray detector 3 each time. Then, the detection signal of the X-ray detector 3 is read by the image processing unit 16, and the image processing unit 16 acquires a plurality of continuous X-ray images based on the detection signal, and sequentially connects these X-ray images. Thus, a long X-ray image of the subject M is generated. The generated long X-ray image data is stored in the image memory 17, and the long X-ray image data of the subject M is read out from the image memory 17 by the monitor 18. It is displayed on the monitor 18.

  In the X-ray imaging apparatus of the present invention, in the case of long imaging, if the imaging distance and the position of one end of the long imaging range of the subject are manually set, the position of the other end of the long imaging range, The positions of both ends of the moving range of the X-ray tube and the X-ray detector corresponding to the scale imaging range are automatically set. Thereby, the setting of the long shooting range by the operator becomes very simple, and the shooting efficiency is greatly improved. In addition, since only one end of the long photographing range is manually set and the other end is mechanically set, there is no possibility that the long photographing range of the subject fluctuates every time long photographing is performed. It is possible to accurately observe the progress of the disease state and the postoperative recovery state.

The configuration of the present invention is not limited to the above-described embodiment. For example, in the first and second embodiments, the subject takes a standing position, and the X-ray tube swings around the focal point along the subject's body axis while taking a long image. As shown in FIG. 9, as shown in FIG. 9, the subject takes a prone position and the X-ray tube moves in parallel along the body axis direction of the subject during long imaging. You can also.
In the embodiment of FIG. 9, a top plate 1 ′ made of an X-ray transmitting material that supports the subject M in a supine position is provided, and the top plate 1 ′ can be moved up and down by a top plate moving mechanism 21. Moreover, it is movable in the longitudinal direction and the width direction in the horizontal plane. The top plate moving mechanism 4 includes a position detector 22 that detects the height of the top plate 1 ′ from the floor surface. The X-ray tube 2 is supported by the X-ray moving mechanism 4 and is movable in the horizontal direction and the vertical direction. The X-ray moving mechanism 4 is provided with a position detector 5, and the X-ray tube 2 has a vertical position. The position in the direction, the position in the horizontal direction, and the swing angle (the angle formed by the center of the X-ray irradiated from the X-ray tube 2 with respect to the horizontal direction) are detected.

  In this embodiment, the configuration of the X-ray detector 3, the X-ray detector moving mechanism 7 and the position detector 8, the control unit 9 and the operation unit 10, the image processing unit 16, the image memory 17 and the monitor 18 are as follows. This is the same as the first and second embodiments.

Also in this embodiment, in the case of long photographing, if the photographing distance and the position of one end of the long photographing range of the subject are manually set, the position of the other end of the long photographing range and the long photographing The positions of both ends of the moving range of the X-ray tube and the X-ray detector corresponding to the range are automatically set.
In this case, the determination of the shooting distance D by the shooting distance determination unit 11 and the recording of data related to the shooting distance D, and the input of the data of one end position (horizontal position) of the long shooting range by the one end position data input unit 13 are as follows. The operation is the same as in the above-described embodiment in which the X-ray tube swings, but the operation of the position data calculation unit 14 is slightly different from that in the above-described embodiment.

  That is, in the case where the X-ray tube 2 is moved in parallel with the top plate 1 during long imaging, the X-ray tube 2 and the X-ray detector 3 are arranged at the center of the X-rays emitted from the X-ray tube 2. Since the beam and the center of the X-ray detector 3 are always moved so as to coincide with each other, the position data calculation unit 14 sets the horizontal position of one end of the long imaging range S per imaging. From the data of the X-ray irradiation range, the horizontal position data of one end of the moving range of the X-ray tube 2 and the X-ray detector 3 corresponding to one end of the long imaging range is calculated. Further, the position data calculation unit 14 reads out the horizontal position data of the other end side of the long imaging range out of both ends of the maximum movable range of the X-ray detector 3, and the corresponding X-ray tube The horizontal position data of the other end of the moving range 2 is calculated, and the horizontal position data of the other end of the long imaging range is calculated from the X-ray irradiation range data per imaging.

  Also in this embodiment, similarly to the above-described embodiment in which the X-ray tube swings, the control unit 8 includes the data regarding the imaging distance D and the predetermined value of the length of the detection surface of the X-ray detector 3. The long imaging range S and the movement range of the X-ray tube 2 and the X-ray detector 3 are divided based on a predetermined value of the length of the overlapping portion when the X-ray images are joined, and the long imaging range is divided. Data of a plurality of imaging positions of the X-ray tube 2 and the X-ray detector 3 including the imaging positions at both ends of S are calculated, and the X-ray tube 2, the X-ray tube moving mechanism 4, the high-voltage power supply device 6, and the X-ray detection The X-ray tube 2 and the X-ray detector 3 are moved from one end of the moving range to the other end while the X-ray tube 2 and the X-ray detector 3 are moved from one end of the moving range to the other end. M is irradiated with X-rays, and X-ray detector 3 transmits transmitted X-rays from subject M each time. Therefore, to detect.

  In this way, the X-ray tube 2 and the X-ray detector 3 are moved from one end (I) to the other end (II) of the movement range along the body axis direction of the subject M. The subject M is irradiated with X-rays from the X-ray tube 2 at a plurality of imaging positions including imaging positions at both ends, and transmitted X-rays from the subject M are detected by the X-ray detector 3 each time. Then, the detection signal of the X-ray detector 3 is read by the image processing unit 16, and the image processing unit 16 acquires a plurality of continuous X-ray images based on the detection signal, and sequentially connects these X-ray images. Thus, a long X-ray image of the subject M is generated. The generated long X-ray image data is stored in the image memory 17, and the long X-ray image data of the subject M is read out from the image memory 17 by the monitor 18. It is displayed on the monitor 18.

DESCRIPTION OF SYMBOLS 1 Screen 1 'Top plate 2 X-ray tube 2a Aperture 3 X-ray detector 4 X-ray tube moving mechanism 5 Position detector 6 High voltage power supply device 7 X-ray detector moving mechanism 8 Position detector 9 Control unit 10 Operation unit 11 Photographing Distance determination unit 12 Shooting range determination unit 13 One end position data input unit 14 Position data calculation unit 15 Number of shots and other data input unit 16 Image processing unit 17 Image memory 18 Monitor 19 Base 20 Imaging surface 21 Top plate moving mechanism 22 Position detector A Upper end of the long imaging range B Lower end of the long imaging range C Upper end of the moving range of the X-ray detector d Distance between the imaging surface and the X-ray detector D Imaging distance f Overlapping portion when X-ray images are joined Length G Lower end of the moving range of the X-ray detector L Maximum movable range of the X-ray detector M Subject N Number of shots Q Initial position for long shooting Q ′ Shooting distance setting position S Long shooting range w 1 shooting Shooting range length per hit W1 Upper end of the maximum movable range of the X-ray detector W2 Lower end of the maximum movable range of the X-ray detector α Swing angle β of the X-ray tube, γ Both end positions of the moving range of the X-ray tube θ Movement of the X-ray tube Range end position

Claims (8)

An X-ray tube and an X-ray detector are opposed to each other with the subject interposed therebetween, and the X-ray tube is swung or translated along the body axis of the subject. The X-ray tube and the X-ray detector are moved in parallel along the body axis of the subject following the X-ray tube, and the X-ray tube and the X-ray detector are moved from one end to the other end of the moving range corresponding to a predetermined long imaging range. The X-ray tube irradiates the subject with X-rays at a plurality of imaging positions including both ends of the moving range, and transmits X-rays from the subject to the X-rays. In an X-ray imaging apparatus that generates a long X-ray image of the subject by acquiring a plurality of continuous X-ray images by detecting by an X-ray detector and connecting the X-ray images.
An imaging distance determining unit for determining an imaging distance from the X-ray tube to the X-ray detector and recording data relating to the imaging distance;
An imaging range determination unit for determining the long imaging range, and the moving range of the X-ray tube and the X-ray detector;
The photographing range determination unit
One end position data input unit for receiving input of data of one end position of the long photographing range;
Corresponds to the long imaging range based on the data of the preset fixed position on the moving path of the X-ray detector, the data of the position of one end of the long imaging range, and the data related to the imaging distance. An X-ray imaging apparatus comprising: a position data calculation unit that calculates data of positions at both ends of a moving range of the X-ray tube and the X-ray detector.   The preset fixed position on the movement path of the X-ray detector is an end on the other end side of the long imaging range among both ends of the preset maximum movable range of the X-ray detector. The X-ray imaging apparatus according to claim 1, wherein the X-ray imaging apparatus is a position. An X-ray tube and an X-ray detector are opposed to each other with the subject interposed therebetween, and the X-ray tube is swung or translated along the body axis of the subject. The X-ray tube and the X-ray detector are moved in parallel along the body axis of the subject following the X-ray tube, and the X-ray tube and the X-ray detector are moved from one end to the other end of the moving range corresponding to a predetermined long imaging range. The X-ray tube irradiates the subject with X-rays at a plurality of imaging positions including both ends of the moving range, and transmits X-rays from the subject to the X-rays. In an X-ray imaging apparatus that generates a long X-ray image of the subject by acquiring a plurality of continuous X-ray images by detecting by an X-ray detector and connecting the X-ray images.
An imaging distance determining unit for determining an imaging distance from the X-ray tube to the X-ray detector and recording data relating to the imaging distance;
An imaging range determination unit for determining the long imaging range, and the moving range of the X-ray tube and the X-ray detector;
The photographing range determination unit
A data input section such as the number of shots to receive data of the length of the shooting range per shot and the number of shots;
One end position data input unit for receiving input of data of one end position of the long photographing range;
The length of the long imaging range is calculated based on a predetermined value of the length of the imaging range per imaging and the data of the number of imaging images and the length of the overlapping portion when the X-ray images are joined, , Based on the data on the length of the long shooting range, the data on the position of one end of the long shooting range, and the data on the shooting distance, the data on the position of the other end of the long shooting range, An X-ray imaging apparatus comprising: a position data calculating unit that calculates data of positions of both ends of the moving range of the X-ray tube and the X-ray detector corresponding to a long imaging range. An X-ray tube and an X-ray detector are arranged opposite to each other with the subject interposed therebetween, the X-ray tube is swung along the body axis of the subject, and the X-ray detector is moved to the X-ray. The X-ray tube and the X-ray detector are moved from one end to the other end of the moving range corresponding to a predetermined long imaging range by following the tube and translating along the body axis of the subject. The X-ray tube irradiates the subject with X-rays at a plurality of imaging positions including both ends of the moving range, and transmits X-rays from the subject to the X-ray detection. This is an operation method of an X-ray imaging apparatus that generates a long X-ray image of the subject by acquiring a plurality of continuous X-ray images by detecting with a detector and joining the X-ray images together. And
(1) When the X-ray tube is moved to the imaging distance setting position and the imaging distance is set, data relating to the imaging distance is recorded,
(2) When the position of one end of the long shooting range is set, the data of the position of one end of the long shooting range is recorded,
(3) acquiring data of a preset fixed position on the movement path of the X-ray detector;
(4) Based on the data on the position of one end of the long imaging range, the data on the preset fixed position on the movement path of the X-ray detector, and the data on the imaging distance, the X-ray tube Calculating the initial position data of the X-ray tube such that the moving range of the X-ray tube is bisected by a perpendicular to the body axis of the subject, and data on the positions of both ends of the moving range of the X-ray tube, A method of calculating data of a position at the other end of the long imaging range and data of positions at both ends of the moving range of the X-ray detector. An X-ray tube and an X-ray detector are arranged opposite to each other with the subject interposed therebetween, the X-ray tube is swung along the body axis of the subject, and the X-ray detector is moved to the X-ray. The X-ray tube and the X-ray detector are moved from one end to the other end of the moving range corresponding to a predetermined long imaging range by following the tube and translating along the body axis of the subject. The X-ray tube irradiates the subject with X-rays at a plurality of imaging positions including both ends of the moving range, and transmits X-rays from the subject to the X-ray detection. This is an operation method of an X-ray imaging apparatus that generates a long X-ray image of the subject by acquiring a plurality of continuous X-ray images by detecting with a detector and joining the X-ray images together. And
(1) When the X-ray tube is moved to the shooting distance setting position and the shooting distance is set, the data of the shooting distance setting position and the data related to the shooting distance are recorded,
(2) When the position of one end of the long shooting range is set, the data of the position of one end of the long shooting range is recorded,
(3) Corresponding to one end of the long photographing range at the photographing distance setting position based on the data of the photographing distance setting position, the data of the position of one end of the long photographing range, and the data regarding the photographing distance. Calculating data on the position of one end of the moving range of the X-ray tube and data on the position of one end of the moving range of the X-ray detector corresponding thereto;
(4) Obtain data of a preset fixed position on the movement path of the X-ray detector,
(5) Based on the data of the imaging distance setting position, the data of the preset fixed position on the movement path of the X-ray detector, and the data related to the imaging distance, the length at the imaging distance setting position Data of the position of the other end of the moving range of the X-ray tube corresponding to the other end of the X-ray imaging range and data of a position of the other end of the moving range of the X-ray detector corresponding to the other are calculated. And how to.   The preset fixed position on the movement path of the X-ray detector is an end on the other end side of the long imaging range among both ends of the preset maximum movable range of the X-ray detector. 6. A method according to claim 4 or claim 5, characterized in that it is a position. An X-ray tube and an X-ray detector are arranged opposite to each other with the subject interposed therebetween, the X-ray tube is swung along the body axis of the subject, and the X-ray detector is moved to the X-ray. The X-ray tube and the X-ray detector are moved from one end to the other end of the moving range corresponding to a predetermined long imaging range by allowing the X-ray tube and the X-ray detector to move in parallel along the body axis of the subject. The X-ray tube irradiates the subject with X-rays at a plurality of imaging positions including both ends of the moving range, and transmits X-rays from the subject to the X-rays. An operation method of an X-ray imaging apparatus that acquires a plurality of continuous X-ray images by detecting by a detector and generates a long X-ray image of the subject by joining the X-ray images. There,
(1) When the X-ray tube is moved to the imaging distance setting position and the imaging distance is set, data relating to the imaging distance is recorded,
(2) calculating the length of the long photographing range based on a predetermined value of the length of the photographing range per photographing, the number of photographing, and the length of the overlapping portion when joining the X-ray images, Calculate the data of the position of the other end of the long shooting range using the length data of the shooting range,
(3) When the position of one end of the long shooting range is set, the data of the position of one end of the long shooting range is recorded,
(4) Based on the data on the position of one end of the long imaging range and the data on the imaging distance, the moving range of the X-ray tube is bisected by a perpendicular to the body axis of the subject. The data of the initial position of the X-ray tube and the data of the positions of both ends of the moving range of the X-ray tube are calculated, and the data of the positions of both ends of the moving range of the X-ray detector are calculated. And how to. An X-ray tube and an X-ray detector are arranged opposite to each other with the subject interposed therebetween, the X-ray tube is swung along the body axis of the subject, and the X-ray detector is moved to the X-ray. The X-ray tube and the X-ray detector are moved from one end to the other end of the moving range corresponding to a predetermined long imaging range by following the tube and translating along the body axis of the subject. The X-ray tube irradiates the subject with X-rays at a plurality of imaging positions including both ends of the moving range, and transmits X-rays from the subject to the X-ray detection. This is an operation method of an X-ray imaging apparatus that generates a long X-ray image of the subject by acquiring a plurality of continuous X-ray images by detecting with a detector and joining the X-ray images together. And
(1) When the X-ray tube is moved to the shooting distance setting position and the shooting distance is set, the data of the shooting distance setting position and the data related to the shooting distance are recorded,
(2) setting a position of one end of the long photographing range and recording data of a position of one end of the long photographing range;
(3) Corresponding to one end of the long photographing range at the photographing distance setting position based on the data of the photographing distance setting position, the data of the position of one end of the long photographing range , and the data regarding the photographing distance. Calculating data on the position of one end of the moving range of the X-ray tube and data on the position of one end of the moving range of the X-ray detector corresponding thereto;
(4) The length of the long photographing range is calculated based on a predetermined value of the length of the photographing range per photographing, the number of photographing, and the length of the overlapping portion when joining X-ray images. Calculate the data of the position of the other end of the long shooting range using the range length data,
(5) Based on the data on the shooting distance setting position, the data on the position of the other end of the long shooting range, and the data on the shooting distance, the other end of the long shooting range at the shooting distance setting position A method of calculating data of a position of the other end of the movement range of the corresponding X-ray tube and data of a position of the other end of the movement range of the corresponding X-ray detector.

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