CN105451655A - X-ray imaging device and method for displaying x-ray fluoroscopic image - Google Patents
X-ray imaging device and method for displaying x-ray fluoroscopic image Download PDFInfo
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Abstract
In order to provide a technique with which it is possible to arrange, during fluoroscopy, an annotation that moves so as to follow an image, and with which it is possible to use the information of the annotation even during surgery or clinical training, this x-ray imaging device is provided with: an x-ray source; an x-ray detector arranged in opposition to the x-ray source; an image generation unit that generates an x-ray image on the basis of x-rays detected by the x-ray detector; a display unit that displays the x-ray image generated by the image generation unit; and a position recognition unit that recognizes the position of the x-ray detector or the position of a subject with respect to the x-ray detector. The image generation unit includes an annotation addition unit that arranges a predetermined annotation in the x-ray image. The annotation addition unit updates the position of the annotation to be superposed on the x-ray image on the basis of the position of the x-ray detector or the position of the subject as recognized by the position recognition unit.
Description
Technical field
The present invention relates to a kind of X-ray imaging device, relate to the technology configuring mark in fluoroscopy images.
Background technology
X-ray imaging device possesses following functions, namely the radioscopic image obtained, as rest image and perspective record image in, to the position that operator and doctor should pay close attention to, internal organs add mark (such as patent documentation 1).Mark is such as the figure comprising photography time, the text of detected body information, arrow and scale etc.By such mark overlap is presented on shown radioscopic image, patient information required when can point out interpreting blueprints, or easily observe and pay close attention to position, easily judge size etc. in addition, marking Function is one of important Presentation Function of X-ray imaging device.
Prior art document
Patent documentation 1: Japanese Unexamined Patent Publication 2006-192037 publication
Summary of the invention
The problem that invention will solve
But existing pass pouring functions is only limited to the rest image after inspection, perspective record image, for image due to the movement of detected body, the fluoroscopy images that changes to the relation between detected body and X-ray detector and moment, mark cannot be configured in real time.Therefore, mark cannot be enjoyed in perspective and show the convenience brought.
Problem of the present invention is: provide a kind of technology, namely can configure the mark of tracking image and movement in perspective, also can utilize the information of mark in the education, operation of clinical sites.
For the scheme of dealing with problems
X-ray imaging device of the present invention possesses: x-ray source; X-ray detector, itself and above-mentioned x-ray source relatively configure; Image processing part, its X-ray detected according to above-mentioned X-ray detector generates radioscopy image; Display part, it shows the radioscopic image that above-mentioned image processing part generates; Position detection part, it detects the position of above-mentioned X-ray detector or the detected body position relative to above-mentioned X-ray detector, wherein, above-mentioned image processing part possesses: mark appendix, it configures predetermined mark in above-mentioned radioscopy image, above-mentioned mark appendix follows the tracks of position or the detected body position of the X-ray detector that above-mentioned position detection part detects, upgrades the position of the mark overlapping with above-mentioned radioscopy image.
Invention effect
According to the present invention, make the movement of mark tracking image, also can not miss the concern position being configured with mark thus when image moves, thus can checking efficiency be improved.
Accompanying drawing explanation
Fig. 1 is the overall synoptic diagram of the X-ray imaging apparatus of the first embodiment.
Fig. 2 is the functional block diagram of the image processing part (image processing apparatus) of the X-ray imaging apparatus of Fig. 1.
Fig. 3 is the flow chart of the action of the X-ray imaging apparatus representing the first embodiment.
Fig. 4 (a) ~ (c) is the figure of the movement illustrated with FPD mark in rotary moving.
Fig. 5 (a) ~ (c) is the figure of the movement that the mark moved horizontally with FPD is described.
Fig. 6 (a), (b) are the figure of the movement of the mark illustrated with FPD reversion.
Fig. 7 is the figure that the mark of key diagram 4 rotates.
Fig. 8 is the figure representing the embodiment demonstrating 2 kinds of marks.
Fig. 9 (a) ~ (d) is the figure of the change of the mark of the change of the distance that adjoint FPD and detected body are described.
Figure 10 is the figure of an example of the position detection part of the X-ray imaging apparatus representing the 3rd embodiment.
Figure 11 is the functional block diagram of the image processing part (image processing apparatus) of the X-ray imaging apparatus of the 4th embodiment.
Figure 12 is the figure of the amount of movement computational methods that the 4th embodiment is described.
Figure 13 is the flow chart of the action of the X-ray imaging apparatus representing the 4th embodiment.
Figure 14 (a), (b) are the figure of the concept of tomography synthesis (tomosynthesis) of application the 5th embodiment.
Figure 15 is the figure of the movement of the mark that the 5th embodiment is described.
Figure 16 is the figure of the height correction that the 5th embodiment is described.
Detailed description of the invention
The feature of the X-ray imaging apparatus of present embodiment is to possess: x-ray source; X-ray detector, itself and above-mentioned x-ray source relatively configure; Image processing part, its X-ray detected according to above-mentioned X-ray detector generates radioscopy image; Display part, it shows the radioscopic image that above-mentioned image processing part generates; Position detection part, it detects the position of above-mentioned X-ray detector or the detected body position relative to above-mentioned X-ray detector, wherein, above-mentioned image processing part possesses: mark appendix, it configures predetermined mark in above-mentioned radioscopy image, above-mentioned mark appendix follows the tracks of position or the detected body position of the X-ray detector that above-mentioned position detection part detects, upgrades the position of the mark overlapping with above-mentioned radioscopy image.
In addition, the feature of X-ray imaging apparatus is to possess: supporter, and it supports above-mentioned x-ray source and above-mentioned X-ray detector, in above-mentioned supporter, possess above-mentioned position detection part.
In addition, the feature of X-ray imaging apparatus is, the above-mentioned position detecting device that above-mentioned supporter possesses detect relative to above-mentioned detected body the moving horizontally of above-mentioned X-ray detector, rotate and above-mentioned x-ray source and above-mentioned X-ray detector reversion in any one.
In addition, the feature of X-ray imaging apparatus is, the combination of the magnetic detector of the magnetic that above-mentioned position detection part is produced by magnetic generator and this magnetic generator of detection is formed, one side of above-mentioned magnetic generator and magnetic detector be fixed on place above-mentioned detected body bedroom table apparatus on, the opposing party is fixed on above-mentioned X-ray detector.
In addition, the feature of X-ray imaging apparatus is, above-mentioned position detection part possesses: Image recognizing section, it identifies characteristic detected body region from the radioscopic image that above-mentioned image processing part generates, wherein, according to the change of the position of region in above-mentioned radioscopy image that above-mentioned Image recognizing section identifies, detect the position of above-mentioned X-ray detector or above-mentioned detected body position.
In addition, the feature of X-ray imaging apparatus is, the first and second marks that above-mentioned mark appendix configuration categories on above-mentioned radioscopic image is different, the position of above-mentioned first mark is fixing, according to the position of above-mentioned X-ray detector or the position of above-mentioned second mark of detected body location updating.
In addition, the feature of X-ray imaging apparatus is, above-mentioned first mark comprises text message, and above-mentioned second mark comprises graphical information.
In addition, the feature of X-ray imaging apparatus is, above-mentioned position detection part possesses: range determination portion, it measures the distance between detected body and X-ray detector, and above-mentioned mark appendix changes the amplification/minification of the mark be configured in above-mentioned radioscopy image according to the distance measured with above-mentioned range determination portion.
In addition, the feature of X-ray imaging apparatus is, above-mentioned image processing part possesses: reconstructing part, its multiple radioscopic images using the direction of illumination of the X-ray of irradiating from above-mentioned x-ray source different, be reconstructed by multiple tomography composographs different relative to the distance of above-mentioned X-ray detector, above-mentioned mark appendix uses the elevation information correction of above-mentioned tomography composograph to be configured in the position of the mark in above-mentioned radioscopy image.
In addition, the feature of the radioscopy method for displaying image of present embodiment is, configuration mark in radioscopy image, detect the change of the relative position of X-ray detector and detected body concurrently with the generation of above-mentioned radioscopy image, use the updating location information detected to be configured in the position of the mark in above-mentioned radioscopy image.
Below, accompanying drawing is used to describe X-ray imaging device of the present invention and radioscopy method for displaying image in detail.
The X-ray imaging device of present embodiment possesses: x-ray source (11,12); X-ray detector (13), itself and above-mentioned x-ray source are oppositely disposed; Image processing part (15), its X-ray detected according to above-mentioned X-ray detector generates radioscopy image; Display part (16), it shows the radioscopic image that above-mentioned image processing part generates; Position detection part (20,25,155), it detects the position of above-mentioned X-ray detector or the detected body position relative to above-mentioned X-ray detector, wherein, above-mentioned image processing part possesses: mark appendix (151), it configures predetermined mark in above-mentioned radioscopic image, above-mentioned mark appendix follows the tracks of position or the detected body position of the X-ray detector that above-mentioned position detection part detects, upgrades the position of the mark overlapping with above-mentioned radioscopy image.
Below, be example with X-ray imaging apparatus, each embodiment of the X-ray imaging device that present invention will be described in detail with reference to the accompanying.
< first embodiment >
Represent the overall synoptic diagram of X-ray imaging apparatus in FIG, represent the functional block diagram of the image processing part of the X-ray imaging apparatus of Fig. 1 in fig. 2.
As shown in Figure 1, X-ray imaging apparatus mainly possesses X-ray generator 11, X-ray tube 12, X-ray area detector 13, bedroom table apparatus 14, image processing apparatus 15, monitor 16 and operating portion 17.In addition, the X-ray imaging apparatus 100 of present embodiment possesses the FPD control device 18 controlled from the output of X-ray area detector 13 between X-ray area detector 13 and image processing apparatus (image processing part) 15.Operating portion 17 both can possess as the control station with monitor 16 one, also can be the operation tool possessing the respective switch, operation push-button etc. that are wire or wirelessly connected with X-ray generator 11, image processing apparatus 15 etc., or both it.
X-ray generator 11 plays function as x-ray source together with X-ray tube 12, possess photography switch 111, perspective switch 112, when these switches open (ON), export to X-ray tube 12 and be used for the signal of telecommunication that X-ray tube 12 irradiates the X-ray of predetermined X-ray amount.Photography switch 111 is the switches of the X-ray for irradiating single, and perspective switch 112 is the switches for X-ray irradiation continuously, and according to photography or perspective, the voltage exported to X-ray tube 12, electric current can be different.X-ray tube 12 produces the X-ray corresponding with the signal of telecommunication from X-ray generator 11.
X-ray area detector 13, except using except FPD, can also use the known detectors such as I.I (image supercharge), but in the present embodiment, uses the FPD that the advantages such as resolution is high, wide dynamic range are many.
X-ray tube 12 and FPD13 are made mutual relative configuration by supporter 19 supporting.As supporter 19, such as, can utilize the supporter rotatably possessing circular shape arm, so-called C arm relative to pillar.In this case, X-ray tube 12 and FPD13 are fixed on the position separating 180 ° on the circular arc of C arm, C arm is rotated relative to pillar, it can be made thus to reverse up and down, or obtain arbitrary angle relative to the detected body 30 lain on bedroom table apparatus 14.In addition, FPD13 can be fixed on rotatably on C arm in the face parallel with its x-ray bombardment face.Thereby, it is possible to change the direction relative to detected body 30.
In addition, supporter 19 possesses makes the mechanism part of X-ray tube 12 and FPD13 movement in the horizontal direction (not shown) relative to bedroom table apparatus 14, by these mechanism part, in the horizontal direction or above-below direction can change the position of detected body 30 relative to X-ray tube 12 and FPD13.
Supporter 19 possesses the position detecting device 20 for detecting because of above-mentioned rotating mechanism, the X-ray tube 12 of mechanism's generation moved horizontally and the change in location of FPD13.Specifically, the FPD rotation detector of the C arm rotation detector possessing the rotation of detection level C arm and the rotation detecting FPD13.As these rotation detectors, the known angular transducers such as encoder can be used.In addition, for the change in location of horizontal direction, the distance measuring sensors such as laser type, infrared-type, magnetic-type can be used.
Rotation amount, the displacement of the FPD13 detected by these position detecting devices 20 are sent to image processing apparatus 15, for changing the position of the mark be configured in herein in radioscopic image.
FPD control device 18 uses the signal of telecommunication from FPD13 output and generates the view data of each frame, is sent to image processing apparatus 15.When having an X-rayed, to each frame more new image data, the view data after upgrading is sent to image processing apparatus 15.
Image processing apparatus 15 uses the view data sent from FPD control device 18 to generate the view data of display, is presented in monitor 16.Monitor 16 can show radioscopic image, and doubles as GUI (graphic user interface) together with operating portion 17.In this case, in monitor 16, display and the various pointer processing corresponding image, carried out movement by the operation of operating portion 17, selected the image corresponding with the process wished, can perform this process thus by the operation of pointer.
Then, use the functional block diagram of Fig. 2, the function of image processing apparatus 15 is described.
Image processing apparatus 15 as shown in Figure 2, possesses mark appendix 151, incidental information storage part 152, display image production part 153, GUI portion 154.
Mark appendix 151 is according to the operation of operating portion 17, mark is configured in the precalculated position of the view data be presented in monitor 16, the C arm of position detecting device 20 transmission that input possesses from supporter 19, the change of the anglec of rotation of FPD, FPD13, relative to bedroom table apparatus 14 amount of movement in the horizontal direction, are configured in the labeling position in view data according to the information updating relevant with these positions.
Incidental information storage part 152 is stored in the image, text data etc. that are presented at target, such as mark, frame line etc. in display frame beyond radioscopic image.
Display image production part 153 controls the display frame of monitor 16, is presented at the information marked, detected body is relevant in the picture of monitor 16 together with the view data sent from FPD control device 18.
GUI portion 154 stores figure, the image of the GUI be presented in monitor 16, and according to the operation of the operating portion 17 via GUI, the function of control mark appendix 151, display image production part 153, other image processing apparatus makes to carry out predetermined process.
Then, the action of the X-ray imaging device of said structure is described.At this, with the situation of having an X-rayed for example is described.In perspective, sequentially obtain multiple radioscopic image, be presented in monitor 16 as fluoroscopy images.Represent the step of action in figure 3.
First, operating the supporter 19 of X-ray tube 12 and FPD13 under the state lying on bedroom table apparatus 14 making detected body 30, configuring X-ray tube 12 and FPD13 with clipping the desired location of detected body 30.Then, from X-ray tube 12 to FPD13 X-ray irradiation.FPD control device 18, according to the view data image data generating of each frame sent from FPD13, is sent to image processing apparatus 15.Image processing apparatus 15 makes necessary frame line, incidental information and generates display image overlappingly from the view data that FPD control device 18 sends, and outputs to monitor 16.Carry out the x-ray bombardment of low X-ray amount continuously from X-ray tube 12, FPD control device 18 is to each frame more new image data send image processing apparatus 15.Consequently in monitor 16, show animation (S101) with the temporal resolution of frame rate.
Mark is configured in the desired location (S102) of the animated image be presented in monitor 16 by operator.The configuration marked is carried out by the GUI be presented at together with animated image in monitor 16.Such as, in the picture of monitor 16, multiple mark image (icon) is shown.Operator, by the operation of operating portion 17 (mouse etc.), selects one to multiple mark images, moves it the arbitrary position on image and show from multiple mark images of display.In addition, if select it according to the kind marked, then the precalculated position being configured in picture will be marked.
Represent the example of the mark be configured on image in figures 4 and 5.Mark 401 shown in Fig. 4 (a) is made up of the figure of arrow, is configured to the chest (heart) indicating detected body image 400.Mark 501 shown in Fig. 5 (a) is scales, is configured in the right side of detected body image 500.
If start perspective, then image processing apparatus 15 also receives the positional information (S103) of FPD13 from position detecting device 20.Under the position of FPD13 does not have vicissitudinous situation, the position of display image does not also change, and therefore marks and proceeds perspective with also keeping initial position.If the change in location of FPD13, be then accompanied by this, the position of fluoroscopy images also changes (S104).Meanwhile, the positional information of the FPD13 detected by position detecting device 20 is sent to image processing apparatus 15, and mark appendix 151 carries out moving (S105) according to the positional information of FPD13 of the position receiving the current mark image shown.To perspective terminates (S106), mark is also followed the tracks of the movement of FPD13 and moves.
In addition, configure the position of mark in the picture, the rotation amount of FPD13 and amount of movement according under original state (S102), produce the situation marking and depart from from display frame.In this case, also mark is not shown.Then, detected body position corresponding to the picture position marked with initial configuration in the movement due to FPD13 after this become be included in FPD13 camera coverage in, again mark is configured in this picture position.
The position of the FPD13 with initial configuration during mark is reference value, the position obtaining the FPD13 after moving, as positional information, easily can realize the function be again presented at by the mark departed from from display frame in picture due to mobile grade of FPD13 after this thus.
In addition, in figure 3, describe the situation of carrying out the configuration (S102) marked on fluoroscopy images, but the state that also fluoroscopy images can be set to rest image temporary transient, namely stop x-ray bombardment state under carry out this process.Thereby, it is possible to the useless radiation during Processing for removing.
Then, the mark corresponding to content describing the positional information obtained from position detecting device 20 in detail moves process.In the positional information sent from position detecting device 20, the amount of movement of the horizontal direction of the FPD13 that the presence or absence of the reversion of the FPD13 that the rotation amount of the FPD13 having FPD rotation detector to detect, C arm rotation detector detect, distance measuring sensor detect.For each situation, in Fig. 4 ~ Fig. 6, indicate the situation of movement of the mark of the movement following the tracks of FPD13.
Fig. 4 indicates the movement of the mark 401 of the rotation following the tracks of FPD13.If FPD13 rotates in the counterclockwise angle θ from the original state shown in Fig. 4 (a) as Suo Shi (b), the view data then sent from FPD13 rotates up θ in the side contrary with the direction of rotation of FPD13, and display image becomes the image 410 shown in (c).When this near initial heart mark 401 being configured in detected body image 30, if mark 1 P of 401, the coordinate of front end in picture of such as arrow do not change, then mark 401 different relative to the position of detected body image 410.Therefore, if image processing apparatus 15 inputs the anglec of rotation θ of FPD13 from position detecting device 20, then as shown in Figure 7, relative to the center of the display image corresponding with the center of rotation of FPD13, the coordinate of the some P of mark 401 is made to move the angle identical with the anglec of rotation of FPD13.At this, if the center of rotation of FPD13 is the center of FPD13, then the centre coordinate of view data becomes center of rotation when mark 401 is rotated.At this, for the purpose of simplifying the description, the centre coordinate of view data is set to (0,0).
Coordinate for the some P of mark 401 moves, if the coordinate of initial some P is set to P1 (x1, y1), φ is set to by by the y-axis of center of rotation and line angulation center of rotation and some P1 coupled together, the coordinate P2 (x2, y2) of the some P after rotating θ is then represented with following formula (1), (2).
x2＝Lsin(φ+θ)(1)
y2＝Lcos(φ+θ)(2)
Wherein, L=√ (x1
2+ y1
2)
By changing the coordinate of configuration mark like this, marking the rotation of tracking image and moving, the mark 411 as shown in Fig. 4 (c), maintaining the position relative to detected body image.
Fig. 5 represents the movement of the mark 501 moved horizontally following the tracks of FPD13.In Figure 5, mark 501 is scales, but when mark is figure as shown in Figure 4 too.
If FPD13 such as moves along the body direction of principal axis of detected body to lower limb side from the original state shown in Fig. 5 (a), then Ru shown in (b), detected body image 510 moves to the top in the direction contrary with the moving direction of FPD13, i.e. picture.At this moment, if mark appendix 151 is from distance measuring sensor input level displacement (the in this case distance of Y-direction: Δ Y), then calculate and move horizontally apart from the distance (Δ y) in corresponding image coordinate with this, as shown in the formula the position of (3) mobile like that configuration mark 501.Consequently mark 511 to move together with the image of detected body, remain on same position relative to detected body.In addition, when being the mark securing x coordinate as scale, mark is only followed the tracks of the movement of the FPD13 in y direction and moves, but when as shown in Figure 4 arrow 401, mark is also followed the tracks of the x direction of FPD13 and the movement in y direction and moves (following formula (3) and (4)).
y2＝y1+Δy(3)
x2＝x1+Δx(4)
In addition, as the embodiment of Fig. 5, fluoroscopy images 500 is configured with scale 501, follow the tracks of the movement of transmission picture in perspective and moving ratio chi 501 in real time, the effect identical with being configured with just in time large scale 512 as shown in Fig. 5 (c) can be obtained thus, for the detected body of the size of overflowing from picture, also size can be measured.
Fig. 6 indicates the movement of the mark 601 of the reversion following the tracks of FPD13.X-ray tube 12 is configured in the upside of detected body 30, FPD13 is configured in the situation (upper pipe overtube) of downside by Fig. 6 (a), supposes to be configured in the fluoroscopy images 600 of this state by mark 601 in step s 102.Fig. 6 (b) is relative with (a), represents the state (lower pipe undertube) reversed in the position of X-ray tube 12 and FPD13.If C arm rotation detection portion detects the reversion of the position having had FPD13 from the original state shown in (a) as (b), image processing apparatus 15 have input this inversion information, then the view data sent from FPD13 becomes with display image the image 610 reversed left and right.
If mark appendix 151 have input inversion information, then the some P of mark is moved to coordinate (-x1, y1) from coordinate (x1, y1).Thus, even if FPD13 reversion, also mark 611 is configured in the position identical with original state (a) relative to detected body 30.
As described above, according to the present embodiment, the where configuration mark no matter on image, can both show precalculated position and the mark of fluoroscopy images integratedly.
In addition, in Fig. 4 ~ Fig. 6, indicate the situation carrying out independently rotating, moving horizontally, reverse respectively, but when the movement of FPD13 is their combination, by combinatorial formula (1), formula (2), the movement of the mark of the movement following the tracks of FPD13 can be carried out.
In addition, in Fig. 4 ~ Fig. 6, indicate the situation showing a kind of mark, but also can show different types of multiple mark.Such as, also can the arrow 401 on same picture shown in allocation plan 4 and the scale shown in Fig. 5 501.In this case, arrow 401 follows the tracks of moving horizontally with moving horizontally of FPD13, but scale 501 can only move in the vertical direction.
And then, except following the tracks of the mark of FPD13, also can show other marks in the fixed position on picture.Represent the embodiment showing 2 kinds of marks in fig. 8.In this embodiment, the mark 802 of the mark (arrow) 801, the not tracking image that associate with the preposition of detected body image 800 is configured with.Mark 802 demonstrates the text messages such as information, such as detected body information, the comment that will often show in frame, in the illustrated embodiment in which, is configured in the fixed position of the bottom right of picture.
Mark 801 (811) tracking image from 800 to 810 as shown in right part of flg moves and moves, but mark 802 (812) is positioned at fixing position and does not move.
< second embodiment >
The feature of the X-ray imaging device of present embodiment is: the process carrying out the Scalable making mark tracking image.
X-ray imaging device is identical with the structure of the first embodiment shown in Fig. 1 with Fig. 2 with the structure of image processing apparatus, also quotes these accompanying drawings in the present embodiment.Below, be described centered by different points.
The X-ray imaging device of present embodiment possesses the mechanism of the distance changed between FPD13 and detected body 30.Such mechanism both can possess in supporter 19, also can possess in bedroom table apparatus 14, but situation about possessing in bedroom table apparatus 14 is described below.The vertical movement mechanism that bedroom table apparatus 14 possesses makes bedroom table apparatus 14 move up and down, and can adjust the distance lain between the detected body 30 of bedroom platform and FPD13 thus.The position detecting device 20 detecting upper and lower amount of movement is possessed in this vertical movement mechanism.As position detecting device 20, both can use the distance measuring sensor etc. of the amount of movement in detection level direction in the first embodiment, also can be the detector etc. of distance by the energy conversion required for the displacement of upper-lower position.The image processing apparatus 15 upper and lower amount of movement that receiving position checkout gear 20 detects during perspective.
As shown in Fig. 9 (a), if the distance between detected body 30 and FPD13 is such as from the change in location described in dotted line to position indicated by the solid line, detected body 30 is left from FPD13, then the image 900 (Fig. 9 (b)) of detected body 30 is exaggerated, and becomes such (image 910) shown in Fig. 9 (c).The amplification of image is all identical with y direction for x direction, can use the distance between the detected body 30 after the distance d1 between the detected body 30 before amplification and FPD13, amplification and FPD13 and obtain.
Distance d1, d2 between the detected body 30 that mark appendix 151 utilizes position detecting device 20 to detect and FPD13, calculating after moving up and down from the position being configured with mark 901 in the picture of Fig. 9 (a) should the coordinate of position of movement, mark 901 is moved to the position calculated.In perspective, carry out the detection of distance and the movement of mark 901 continuously with predetermined timing, the amplification of the image therefore produced due to the change of distance and the mobile of mark are linked.Therefore, animation shows and mark 901 is fixed on same position on detected body picture and the situation of enlarged image.
When the vertical movement mechanism action of bedroom table apparatus 14 makes the distance between detected body 30 and FPD13 reduce too, display image 910 is reduced into the state of Fig. 9 (b) from the state of Fig. 9 (c), be accompanied by this, mark 911 moves, and mark 901 (911) can keep fixing relation relative to detected body image 900 (901).
In addition, when becoming the state shown in Fig. 9 (d) when amplifying further from the state shown in Fig. 9 (c), mark 921 departs from from display frame and does not show.But, when downscaled images again, be again shown under the state in precalculated position being configured in detected body image in the same manner as the first embodiment.
In addition, in any picture zoomed in or out, there is the moving horizontally of FPD13, when rotating, can mark 901 made in the same manner as the first embodiment to move horizontally or rotate.
< the 3rd embodiment >
Present embodiment is applicable to being applied to supporting X-ray tube 12 and is not connected with bedroom table apparatus 14 with the supporter 19 of FPD13 and can the X-ray imaging device of freely movement.When such X-ray imaging device, the positional information of FPD13 cannot be obtained from supporter 19.Therefore, present embodiment is obtained the positional information of FPD13 by the position detecting device configured independently from supporter 19.As position detecting device, the combination of the magnetic detector of the magnetic that magnetic generator and this magnetic generator of detection such as can be used to produce.
Below, centered by the point different from the first embodiment, present embodiment is described.Represent an embodiment of the position detecting device 25 that the X-ray imaging device of present embodiment possesses in Fig. 10.In the embodiment shown in fig. 10, magnetic generator 251 is configured in the corner above bedroom table apparatus 14, Magnetic Sensor 252 is configured on FPD13 (such as its center).Magnetic Sensor 252 can detect intensity and the direction of the magnetic that the magnetic generator 251 that possesses in the corner of bedroom table apparatus 14 produces, and can detect the position of Magnetic Sensor 252 relative to each magnetic generator 251.
Such as, using the center of bedroom table apparatus 14 as the reference position of Magnetic Sensor 252 time, can according to the intensity of the magnetic from magnetic generator 251A, 251B and from the magnetic of magnetic generator 251C, 251D intensity between the change of ratio, detect the amount of movement of the above-below direction of the paper relative to reference position.Equally, can according to the intensity of the magnetic from magnetic generator 251A, 251C and from the magnetic of magnetic generator 251B, 251D intensity between the change of ratio, detect the amount of movement of the left and right directions of the paper relative to reference position.
The signal of telecommunication corresponding relative to the amount of movement of bedroom table apparatus 14 (detected body) with FPD13 detected by Magnetic Sensor 252 is input to the image processing apparatus 15 of X-ray imaging device.In the same manner as the first embodiment, the mark appendix 151 of image processing apparatus 15, according to the amount of movement of the FPD13 of input, makes the mark be attached in animation (fluoroscopy images) follow the tracks of mobile.In addition, for the reversion of X-ray tube 12 and FPD13, information can be obtained from supporter 19.
For the distance between detected body and FPD13, such as, according to from the increase and decrease of magnetic total amount of 4 magnetic generators 251 being configured in bedroom table apparatus 14, the amount of movement of FPD13 relative to the vertical direction of bedroom table apparatus 14 can be detected.By using the amount of movement of vertical direction, labeling position can be moved accordingly with the Scalable of image in the same manner as the second embodiment.
According to the present embodiment, possess can relative in bedroom the table apparatus 14 independently X-ray tube 12 of movement and the X-ray imaging device of FPD13, also can detect the change of the relative position between detected body 30 and FPD13, use this testing result to make the mark tracking image be configured in fluoroscopy images.
< the 4th embodiment >
The feature of present embodiment is: be not the positional information that position detecting device, the magnetic detector possessed from supporter 19 obtains FPD13, but detected by image procossing by image processing apparatus.
Represent the functional block diagram of the image processing apparatus of the X-ray imaging device of present embodiment in fig. 11.In fig. 11, represent the key element identical with Fig. 2 with identical symbol, and omit the description.As shown in figure 11, image processing apparatus 15 possesses mark appendix 151, incidental information storage part 152, display image production part 153, GUI portion 154, Image recognizing section 155.
Image recognizing section 155 detects the part (hereinafter referred to as characteristic area) with character shape on the image of being specified by the operation of operating portion 17, and record position.Such as when being configured in fluoroscopy images by mark, the appointment of characteristic area can be carried out by operating portion 17 appointed area.
It is desirable to surrounding that characteristic area is the position being configured with mark (near), the immediate vicinity of image.But, when not there is the part of character shape near the center being configured with the surrounding of position of mark, image, also can specify part in addition.In addition, characteristic area can be a place, but also can specify more than 2 places.When being appointed as more than 2 places by characteristic area, even if the view data at one place departs from due to the movement of FPD, as long as other characteristic areas are included in view data, the detection of position also can be carried out.In addition, even if mark had once been offset to outside picture, when turning back in picture, the display marked can also again carried out.And then by characteristic area more than record 2 place, be not merely able to detect moving horizontally of FPD, can also rotation be detected.
View data for each frame sent from FPD control device 18 carries out the detection of characteristic area.In this case, both can be carried out the image of characteristic area itself by image recognition technology, also can extract the characteristic quantity of pixel value, the characteristic quantity etc. of profile out for the image of characteristic area, according to the characteristic quantity recognition feature region of extracting out.
Image recognizing section 155 and then the positional information (centre coordinate of such as characteristic area) using the characteristic area identified, the positional information of characteristic area of specifying at first, calculate the amount of movement (direction and size) of characteristic area.When the periphery specific characteristic region marked, the moving direction can seeing characteristic area as is identical with amount of movement with the moving direction of the position being configured with mark with amount of movement.In addition, as shown in figure 12, when the characteristic area of specifying at first is 2 place Q11, Q12, calculate the position identical with the position P2 of the line segment L2 relative to position Q21 with Q22 be connected after movement relative to the mark allocation position P1 of the line segment L1 connecting Q11 with Q12 as position P2.
With reference to the action of the X-ray imaging device of the process description present embodiment shown in Figure 13.In fig. 12, the process identical with Fig. 3 is represented with identical symbol.If start to have an X-rayed (S101), then corresponding with the operation of operating portion 17, mark appendix 151 will mark the precalculated position (S102) be configured on fluoroscopy images.In addition, with the operation of operating portion 17 accordingly in the periphery specific characteristic region (S201) of position being configured with mark.Image recognizing section 155 calculates the image model, characteristic quantity etc. of the characteristic area of specifying, and stores together with its coordinate.Then, concurrently each image of each frame is carried out to the detection of characteristic area with the continuation (S103) of perspective, calculate the amount of movement (S202) of the position relative to the characteristic area of specifying at first.
When characteristic area moves (S203), mark appendix 151 makes mark move the amount of movement identical with the amount of movement calculated by Image recognizing section 155.Thus, same with the first embodiment, mark can be made in real time to follow the tracks of moving horizontally of FPD.But, when as scale, mark is configured in picture one-sided of obstacle is not produced to image, such as only carry out the movement in the y direction of picture.
In the flow process of Figure 13, the situation of the appointment (S201) that fluoroscopy images carries out configuration (S102) and the characteristic area marked is described, but by the state that fluoroscopy images is set to rest image temporary transient, namely stop x-ray bombardment state under carry out these process, can radiation be reduced.
Same with the first embodiment in the present embodiment, mark of more than two kinds can be utilized simultaneously, such as secure the mark of position and the mobile mark linked with FPD.In this case, one is only made to follow the tracks of FPD and move.
According to the present embodiment, the situation that X-ray imaging device does not possess position detecting device 20 can also be applied to, can not also additional magnetic detector etc. be needed in addition.
< the 5th embodiment >
Present embodiment is the embodiment applying the present invention to tomography synthesis.The basic structure of device is identical with the structure shown in Fig. 1 with Fig. 2 or Figure 12, in the following description, quotes the key element described in these accompanying drawings as required.
First, with reference to Figure 14 and Figure 15, the concept that tomography synthesizes, the application of synthesizing tomography are described.
As shown in Figure 14 (a), from X-ray tube 12 X-ray irradiation, when obtaining the radioscopic image of detected body, for the direction of illumination of X-ray, detect the value of gained after integration transmission X-ray.Therefore, the position 141,142,143 of overlapping with the direction of illumination of X-ray detected body keeps overlappingly by image conversion (image 241,242,243).When making X-ray different to the direction of illumination of FPD13, as shown in Figure 14 (b), different corresponding from the height relative to FPD13, produces deviation (image 341,342,343) at the position of overlap.Tomography synthesis is the technology of the image according to the different face of the multiple image reconstruction height making the direction of illumination of X-ray different.By obtain according to each height reconstructed image be called tomography composograph.
In the present embodiment, as shown in figure 15, in the multiple tomography composographs 451,452 obtained by tomography process cinematography, configure mark 455, in fluoroscopy images 450 after this, configure this mark.At this moment, use the elevation information that the tomography composograph being configured with mark has respectively, revise the positional information of mark.Same with the first ~ four embodiment, the positional information that the position detecting device 20 possessed from the supporter 19 of X-ray tube and FPD or magnetic detector 25 or obtain from the Image recognizing section of image processing apparatus 15 and amount of movement calculating part marks.
As shown in figure 16, suppose at the height relative to FPD13 to be configured with mark 455 in the image 451 (Figure 15) of height h, the coordinate of predetermined 1 P (front end of such as arrow) of mark is at this moment set to x1.When X-ray tube 12 and FPD13 move Δ x θ in the-x direction relative to detected body 30, the amount of movement can seen as close to FPD13 part on image is roughly the same with the amount of movement of FPD13, in this case, if mark 455 to be set to coordinate x1+ Δ x θ, then mark the movement that 455 follow the tracks of FPD13.On the other hand, more relative to amount of movement Δ x (h) of the mark allocation position in the image 451 that the height of FPD13 is h, specifically represent with following formula (5).
Δx(h)＝Δxθ{L/(L－h)}(5)
In formula, L represents the distance between x-ray tube 12 and FPD13.
Formula (5) be height function, be by height correction after amount of movement.The moving direction of FPD13 and the moving direction of image have contrary relation, therefore by amount of movement Δ x (h) obtained according to formula (5) that moved up in the side contrary with the moving direction of FPD13 by the mark 455 be configured in image 451, mark follows the tracks of FPD.For the mark 456 be configured in the image 452 (Figure 15) different from image 451 relative to the height of FPD, also similarly amount of movement can be calculated according to formula (5).
Like this, according to the present embodiment, can carry out following the tracks of mobile according to implementing revised FPD relative to the height of FPD13.
Above, describe the embodiments of the present invention, but feature of the present invention be mark tracking image to make the image configurations beyond to rest image change in location based on, both each embodiment had been not limited to, also can suitably combine each embodiment in addition, or omit the function of a part of each embodiment.
In addition, can also the apparatus structure realizing function of the present invention suitably be changed.Such as, in the above-described embodiment, describe main image processing apparatus to realize the situation of feature functionality of the present invention, but be not limited to image processing apparatus, form the title in its each portion, can the key element of carrying out same process be set in CPU.
Industrial utilizability
According to the present invention, provide a kind of X-ray imaging device that can effectively utilize marking Function.
Description of reference numerals
11:X ray generating devices; 12:X ray tube; 13:X ray plane detector (FPD); 14: bedroom table apparatus; 15: image processing apparatus; 16: monitor; 17: operating portion; 18:FPD control device; 19: supporter; 20,25: position detecting device; 30: detected body; 151: mark appendix; 152: incidental information storage part; 153: display image production part; 154:GUI portion; 155: Image recognizing section.
Claims (10)
1. an X-ray imaging device, is characterized in that, possesses:
X-ray source;
X-ray detector, itself and above-mentioned x-ray source relatively configure;
Image processing part, its X-ray detected according to above-mentioned X-ray detector generates radioscopy image;
Display part, it shows the radioscopic image that above-mentioned image processing part generates; And
Position detection part, it detects the position of above-mentioned X-ray detector or the detected body position relative to above-mentioned X-ray detector,
Above-mentioned image processing part possesses: mark appendix, and it configures predetermined mark in above-mentioned radioscopy image,
Above-mentioned mark appendix follows the tracks of position or the detected body position of the X-ray detector that above-mentioned position detection part detects, upgrades the position of the mark overlapping with above-mentioned radioscopy image.
2. X-ray imaging device according to claim 1, is characterized in that,
X-ray imaging device possesses: supporter, and it supports above-mentioned x-ray source and above-mentioned X-ray detector,
Above-mentioned position detection part is possessed in above-mentioned supporter.
3. X-ray imaging device according to claim 2, is characterized in that,
The above-mentioned position detecting device that above-mentioned supporter possesses detect above-mentioned X-ray detector relative to the moving horizontally of above-mentioned detected body, rotate and above-mentioned x-ray source and above-mentioned X-ray detector reversion in any one.
4. X-ray imaging device according to claim 1, is characterized in that,
The combination of the magnetic detector of the magnetic that above-mentioned position detection part is produced by magnetic generator and this magnetic generator of detection is formed, a side in above-mentioned magnetic generator and magnetic detector be fixed on place above-mentioned detected body bedroom table apparatus on, the opposing party is fixed on above-mentioned X-ray detector.
5. X-ray imaging device according to claim 1, is characterized in that,
Above-mentioned position detection part possesses: Image recognizing section, it identifies characteristic detected body region from the radioscopic image that above-mentioned image processing part generates, the change of the position of region in above-mentioned radioscopy image that above-mentioned position detection part identifies according to above-mentioned Image recognizing section, detects the position of above-mentioned X-ray detector or above-mentioned detected body position.
6. X-ray imaging device according to claim 1, is characterized in that,
The first and second marks that above-mentioned mark appendix configuration categories on above-mentioned radioscopic image is different, the position of above-mentioned first mark is fixing, according to the position of above-mentioned X-ray detector or the position of above-mentioned second mark of detected body location updating.
7. X-ray imaging device according to claim 6, is characterized in that,
Above-mentioned first mark comprises text message, and above-mentioned second mark comprises graphical information.
8. X-ray imaging device according to claim 1, is characterized in that,
Above-mentioned position detection part possesses: range determination portion, it measures the distance between detected body and above-mentioned X-ray detector, and the distance that above-mentioned mark appendix and above-mentioned range determination portion measure changes the amplification/minification of the mark be configured in above-mentioned radioscopy image accordingly.
9. X-ray imaging device according to claim 1, is characterized in that,
Above-mentioned image processing part possesses: reconstructing part, its multiple radioscopic images using the direction of illumination of the X-ray of irradiating from above-mentioned x-ray source different, multiple tomography composographs that the distance of reconstruct apart from above-mentioned X-ray detector is different, above-mentioned mark appendix uses the elevation information correction of above-mentioned tomography composograph to be configured in the position of the mark in above-mentioned radioscopy image.
10. a radioscopy method for displaying image, is characterized in that,
Configuration mark in radioscopy image,
And the generation of above-mentioned radioscopy image detects the change of the relative position between X-ray detector and detected body concurrently, the positional information detected is used to come the position of the mark of Reconfigurations in above-mentioned radioscopy image.
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