CN100469312C

CN100469312C - Radiographic image diagnosis device

Info

Publication number: CN100469312C
Application number: CNB038174103A
Authority: CN
Inventors: 池田重之; 中泽哲夫
Original assignee: Hitachi Medical Corp
Current assignee: Hitachi Ltd
Priority date: 2002-07-22
Filing date: 2003-07-22
Publication date: 2009-03-18
Anticipated expiration: 2023-07-22
Also published as: CN1671323A; JP4164644B2; WO2004008965A1; JP2004056566A

Abstract

A radiographic image diagnosis device includes an X-ray source for applying X-ray to an examinee, an X-ray detection device arranged to oppose to the X-ray source so as to sandwich the examinee together with the X-ray source, thereby acquiring image data of the examinee for each frame at a predetermined frame rate, valid image recognition means for judging whether image data acquired by the frame rate is one obtained under X-ray irradiation, and an image processing section for processing only the image data judged to be an image obtained under X-ray irradiation by the valid image recognition means and displaying or/and recording the image data.

Description

The radioscopic image diagnostic equipment

Technical field

The present invention relates to the radioscopic image diagnostic equipment, particularly the technology of simple realization digital X-ray photography (DR) device.

Background technology

On being shown in TV Monitor etc. from the radioscopic image of X-ray detector output when in the past, the radioscopic image diagnostic equipment constitutes x-ray bombardment to subject.X-ray detector will be converted to optical imagery by possessing image intensifier as cesium iodide faces such as (CsI) (below be designated as I.I.) through the X ray information of subject, make this optical imagery be converted to image information by television camera etc.

In image processing apparatus, use image acquisition board etc., will from the image collection of television camera in memorizer, carry out various Flame Image Process, store in the hard disk unit (HDD), and with image conveyer to display panel.The pictorial display that so carries out the Flame Image Process acquisition is in TV Monitor, for the usefulness of diagnosis.In this prior art, in order to photograph radioscopic image, the exposure of X ray just need be regularly synchronous with the frame of television camera, that is to say, the synchronizing signal that television camera cooperates image processing apparatus to provide is carried out work, and the timing arrangement of the exposure of X ray and this television camera is synchronous.This X ray DR device is for example opened in the flat 7-322141 communique on the books the spy.

Fig. 6 represents the formation of the DR device of existing type.

Among the figure, the memorizer that (Radiography) beginning switches, 8 expression frame-grab plates, 9 expression display, 10 expression hard disk units, 11 expression central processoies (CPU), 12 expression X ray interfaces, 13 expression synchronization control circuits, 20 expression CPU use is taken in 1 expression X-ray tube ball, 2 expression subjects, 3 expression I.I. (ImageIntensifier), 4 expression television cameras, 5 expression X ray high tension generators, 6 expression perspective (Fluoroscopy) beginning switches, 7 expressions.

Fig. 8 is the skeleton diagram of formation of the light exposure control that is used for X-ray tube of the existing X ray photographic attachment of expression.Be provided with allotter 101 between I.I.3 and television camera 4, allotter 101 comprises photomultiplier tube 102 and the half-reflecting mirror 104 that possesses daylighting open country 103.The path of part optical image to the wild 103 direction warpages of daylighting, is incided the daylighting open country 103 of photomultiplier tube 102 by reflecting mirror 104.Fig. 9 is the chart of photomultiplier tube work in the existing X ray photographic attachment of expression.As can be seen from the figure, the light quantity that incides daylighting open country 103 is carried out integration, when this integrated value surpassed the threshold value Th of regulation, the exposure of X ray stopped.Certainly, in existing technology, the control of not taking Fig. 8 or Fig. 9 and so on that also has, and be to use intervalometer etc., the time is in accordance with regulations carried out the exposure of X ray.

Like this,, in I.I.3, be converted to optical signal, in television camera 4, be converted to picture signal Image from the controlled x-ray bombardment of time of exposure of X-ray tube ball 1 emission and through subject 2.This picture signal is acquired in frame-grab plate (FGB) 8, and the control by CPU11 is shown in the display (Disp) 9 or records in the hard disk unit (HDD) 10.

In existing technology,, need carry out Synchronization Control to obtaining regularly of X ray control and image, thereby be provided with synchronization control circuit 13 and X ray interface 12 in order to obtain these images.In addition, also need to make television camera 4 external sync, supply with synchronizing signal Vsync from synchronization control circuit 13 to television camera 4, television camera 4 works asynchronously with this synchronizing signal.The control sequence of this situation as shown in Figure 7.

In Fig. 6 and Fig. 7, Vsync represents the vertical synchronizing signal of the image of television camera 4, Rsw represents that Exposure represents the X ray exposure signal from X ray high tension generator 5 from the commencing signal of taking beginning switch 7, and Image represents the effective picture signal from television camera 4.Be commonly referred to as 1 frame from a Vsync to next Vsync, the update times of the frame of each second is called frame per second during pictorial display.

When television camera 4 carries out Image Acquisition synchronously with Vsync,,, just begin to take as long as imported the Rsw signal no matter when Vsync rises.As shown in Figure 6, via X ray interface (X I/F) 12, be sent to synchronization control circuit (Syncro I/F) 13 from the input of taking the Rsw signal that begins switch 7.After synchronization control circuit 13 receives this signal, with the synchronous timing of next Vsync to X ray interface 12 output X ray exposure control signals, X ray interface 12 is to X ray high tension generator 5 output X ray exposure signals.Wherein, as above-mentioned shown in Figure 9, from the rising of X ray exposure signal Exposure constantly, the photomultiplier tube 102 of allotter 101 just continues to be subjected to light, when the integrated value that is judged as the X ray amount reaches optimum image threshold value shown in Figure 9, stop the exposure of X-ray tube.In addition, also can adopt the additive method that does not use this photomultiplier tube 102, for example, can judge that various parameters determine a time of exposure, in the scope of a frame, in the time of exposure of regulation, begin to make exposure signal Exposure to continue from exposure according to experience.Then, the order that the timing output frame capture board 8 of the next Vsync after the X ray exposure obtains image information is obtained image at the Image place, finishes the shooting of 1 image.

Make radioscopic image become digital picture and popularize fast in recent years for the DR device of the usefulness of diagnosis, still, in order to realize top said external sync photography, the television camera 4 and the synchronization control circuit 13 that need special outfit to adapt with it.And use after these special video cameras and the synchronization control circuit 13, will there be the problem that equipment volume is big, cost is high.Therefore, if needn't use these special video cameras and synchronization control circuit 13 when carrying out Image Acquisition, so just can provide small-sized, image picking-up system at a low price.

On the other hand, for existing X ray camera chain (in other words, to there be the video signal of the television camera of external sync function to be presented on the TV Monitor as fluoroscopy images, the systems that photographic images is exported by X-ray film etc.), it is also very high to transform the cry that can carry out the digital type image shooting as with cheap price.For this reason, be necessary to consider significantly to transform the method that just can realize the digital picture diagnosis to existing systems by parts or the unit that digital photography is used is installed.

Summary of the invention

In view of above problem, the object of the present invention is to provide the radioscopic image diagnostic equipment and digital image acquiring device and image processing apparatus, the radioscopic image diagnostic equipment, needn't use the television camera and the synchronization control circuit of band external sync function, just can realize radioscopic image is obtained as numerical data, and digital image acquiring device and image processing apparatus can transform the existing radioscopic image diagnostic equipment as the digital radioscopic image diagnostic equipment.

To achieve these goals, the radioscopic image diagnostic equipment of the present invention, it is characterized in that, be provided with: x-ray source, subject irradiation X ray X ray is detected the dress device, itself and above-mentioned x-ray source are oppositely arranged, and with obtain from the asynchronous regulation frame per second of X ray of above-mentioned x-ray source irradiation with through the corresponding radioscopic image of the X ray of above-mentioned subject and with its output; Judgment device judges whether from each two field picture of above-mentioned X-ray detector frame per second output in accordance with regulations be the radioscopic image that carries out the X ray exposure; And equipment to showing and/or writing down, the image that is judged to be radioscopic image by above-mentioned judgment device is handled and demonstration and/or record, if the above-mentioned image that is judged to be radioscopic image is the multiframe consecutive image, then the accumulated image of these successive radioscopic images is handled, and shown and/or record.

In addition, effective image recognition apparatus of image can be frame-grab plate or CPU when differentiating the X ray exposure.And the addition of image also can be undertaken by the memorizer that frame-grab plate or CPU and CPU use.And image processing part is CPU usually.When the X ray from x-ray source exposure has surpassed when a certain amount of, the X ray interrupt signal will output in the x ray generator, also can reserve required X ray light exposure in advance, carry out the control of corresponding time of exposure by intervalometer.

As above-mentioned X-ray detector, can be suitable for the combination of I.I. and television camera (ccd video camera), also can be suitable for by the flasher that lonizing radiation is converted to light and be subjected to behind the light that light is converted to the photodiode of the signal of telecommunication and read X ray detecting element that the switch element of the electric charge that is converted by light in the photodiode forms by 2 dimensions arrange form 2 tie up X ray sensors (X ray flat surface sensor) etc.

Promptly, use does not have the X-ray detector (according to obtaining the X-ray detector of pairing radioscopic image of the X ray that sees through and output with the frame per second of the asynchronous regulation of X ray of shining from x-ray source) of external sync function, the X ray exposure is carried out with X-ray detector is asynchronous, according to image information, whether each two field picture that automatic judgement is exported from above-mentioned X-ray detector frame per second in accordance with regulations carries out the radioscopic image after the X ray exposure.Afterwards, only the image that is judged as radioscopic image is handled and demonstration and/or record.In addition, be the multiframe consecutive image if be judged as the image of radioscopic image, the accumulated image to these successive radioscopic images shows and/or record so.

Thus, can use does not have the low price of external sync function video camera etc., and simultaneously X ray can be exposing at arbitrary timing, thereby x ray generator also needn't be transformed low-cost, that the short time just can be realized this system installation and transformation.

Description of drawings

Fig. 1 is the block diagram that the summary of radioscopic image diagnostic equipment embodiment of the present invention constitutes.

Fig. 2 is the block diagram of a kind of embodiment of the frame-grab plate shown in the presentation graphs 1.

Fig. 3 is the timing diagram of shooting order among expression the present invention.

Fig. 4 is the timing diagram of the shooting order when representing time of exposure above a frame.

Fig. 5 is the block diagram of the another kind of embodiment of the frame-grab plate shown in the presentation graphs 1.

Fig. 6 is the block diagram that the existing DR device summary of expression constitutes.

Fig. 7 is the timing diagram of the existing DR device shooting order of expression.

Fig. 8 is the skeleton diagram of the part of the existing X ray photographic attachment formation of expression.

Fig. 9 is the chart of the work of photomultiplier tube in the existing X ray photographic attachment of expression.

The specific embodiment

Below, according to accompanying drawing embodiments of the present invention are described.

Fig. 1 be expression the present invention and the block diagram that constitutes of the summary of radioscopic image diagnostic equipment embodiment.Among the figure, 1 expression X-ray tube ball, 2 expression subjects, 3 presentation video booster (I.I.), 41 expression television cameras, 5 expression X ray high tension generators, 6 expression perspective beginning switches, the beginning switch is taken in 7 expressions, and 14 expressions have the frame-grab plate of effective image identification function, 9 expression display, 10 expression hard disk units, 11 expression central processoies (CPU), 20 expression CPU memorizeies, expression is included in the memorizer among the CPU or the memorizer of CPU use.

Whether television camera 41 is no matter have the output of X ray can carry out image taking, and frame per second in accordance with regulations (for example 30 frame/seconds) outputs to view data in the frame-grab plate 14.This television camera 41 also can not be equipped with the external sync function.

In addition, after X ray high tension generator 5 receives from the commencing signal Rsw that takes beginning switch 7, carry out the X ray exposure, be used for the radioscopy photography.In the present invention, about the control of X ray time of exposure, can adopt with above-mentioned about the same formation of Fig. 8 of prior art.In other words, as the explanation among Fig. 9, rising from X ray exposure signal Exposurer, the part of the optical image of the two-dimentional face output of I.I.3 incides in the photomultiplier tube 102 of allotter 101, when its integrated value reaches optimum image threshold value shown in Figure 9, stop the exposure of X-ray tube.Perhaps, also can use intervalometer after beginning shooting, to continue the exposure regular hour, make the X ray light exposure reach setting, stop exposure afterwards again.In addition, the present invention is different with above-mentioned existing technology, and the time of its X ray exposure can cross over more than 2 frames.

Below, effective image identification function of frame-grab plate 14 is described.Fig. 2 is the block diagram of first kind of embodiment of expression frame-grab plate 14.This frame-grab plate 14 by

frame memory

15,16,18 and change-over switch 17 and effectively image recognition portion 19 form.

, to frame memory 15, be transferred to frame memory 16 afterwards and note from the Imagery Data Recording of above-mentioned television camera 41 inputs, simultaneously, also be transferred to effective image recognition portion 19.In effective image recognition portion 19, calculate from the meansigma methods of the view data of frame memory 15 inputs, use this meansigma methods to judge that the view data of input is the image of X ray output.

Image when X ray does not expose, shot image data is the black noise of television camera 41, therefore the value that the meansigma methods of this black noise is added a difference if the meansigma methods of the view data of input surpasses above-mentioned threshold value, so just can conclude that it is effective image as threshold value.In addition, also can add median filter, carry out black noise image and the effectively identification of image by making rectangular histogram.

For example, to using ccd video camera to describe as the situation of above-mentioned television camera 41.Black noise is usually below a few percent of dynamic range in the numeral output of CCD.There are 40 bit black noises in the output of supposing 4096 bits, will add on the meansigma methods of black noise so+value after the 460 bit left and right sides differences is as threshold value (500 bit), just can make black noise image and effective separation of images fully.Obtain the meansigma methods of above-mentioned black noise, can adopt the bit number addition of each pixel again divided by the method for number of pixels.Because the meansigma methods of general black noise is at 10% below more than 0.1% of dynamic range, therefore the meansigma methods of supposing black noise basically just can be very ideally with black noise image and effective separation of images in about 10% of dynamic range.At this moment difference can be considered in obtaining the process of meansigma methods.

According to the result after using said method to judge, change-over switch 17 is switched, only with effective Imagery Data Recording in frame memory 18, and with this image recording in hard disk unit 10, perhaps on display 9, show.

Order when using the above processing method that illustrates to carry out the X ray photography as shown in Figure 3.Among the figure, Vsync represents the vertical synchronizing signal of television camera 41, and Rsw represents that Exposure represents the X ray exposure signal of x ray generator 5 from the commencing signal of taking beginning switch 7, and Image represents the effective picture signal from television camera 41.When taking beginning, produce and the irrelevant asynchronous shooting commencing signal Rsw of the inner synchronousing signal of television camera 41.As the represented relation of arrow 53, to take commencing signal Rsw one and produce, X ray is just exposure at once.Fig. 3 is the situation that finishes X ray exposure signal Exposure within 1 frame of television camera 41, and the exposure of X ray is between two Vsync.When between these two Vsync, taking, because not exposure of X ray in the along the line represented scope 51 of X ray exposure signal Exposure, at this moment will photograph black noise, and in scope 50, will photograph effective image that the exposure owing to X ray obtains.The data that comprise effective image that obtain in scope 50 are the states that comprise black noise, and as the represented relation of arrow 54, the next frame after the X ray exposure will be sent in the frame-grab plate (FGB) 14 as view data.Fig. 7 of expression prior art, be to produce the timing that vertical synchronizing signal Vsync afterwards produces with commencing signal Rsw, X ray begins exposure, and in the present invention, as the represented relation of arrow 53, be that X ray just begins exposure when producing Rsw after beginning, this point is different with prior art.

In the present invention, the formation of detector and x-ray source also can be the same with Fig. 8.In other words, can be as shown in Figure 9, from the rising of X ray exposure signal Exposure, the photomultiplier tube 102 of allotter 101 just continues the beam incident optical picture, when its integrated value reaches optimum image threshold value shown in Figure 9, stop the exposure of X-ray tube.Perhaps also can be as mentioned above, the parameter during according to shooting determines a shooting time, make the light exposure of X ray be fit to the subject position, but the intervalometer of use setting-up time etc. carries out the exposure of X ray within official hour.

Below with reference to Fig. 4, to carry out X ray exposure during when surmounting 1 frame, the processing when perhaps crossing over before and after the synchronizing signal Vsync describes.

Even the length of X ray exposure is within 1 frame, because during time exceeding 1 frame that exposure asynchronous when making view data appear in successive 2 frames, perhaps exposed, the image that is judged as radioscopic image will be a consecutive image of crossing over multiframe.At this moment, CPU11 only need carry out accumulation process to these successive radioscopic images.Order to Fig. 4 describes below.According to the represented relation of arrow 53, taking after commencing signal Rsw produces, carry out exposure with the X ray of the irrelevant asynchronous regulation of the inner synchronousing signal of television camera 41 from X-ray tube 1.In X ray exposure signal Exposure, shown in

scope

501 and 502, two frames are crossed in the exposure of X ray, but the time of exposure 501 of X ray and 502 is than 1 frame weak point of the prior art.At this moment, radioscopic image Image also has

arrow

54 and 55 represented relations respectively, obtains successive two frames.Comprise black noise 51 and

effective image

501 and 502 in the view data of each frame, the time of exposure of X ray is short, and the data volume of corresponding effectively image is also few.But if with the radioscopic image data addition of this two frame, its quantity of information can be made 1 width of cloth radioscopic image fully.

For example, during time of exposure is above 1 frame (for example 1/30 second), when the X ray exposure of the image of each frame that television camera 41 is obtained is respectively 17ms, because the X ray light exposure is cut apart, thereby the image of each frame is not easy saturated, if these images are synthetic, in the time of maximum, may obtain dynamic range and be 2 times image.Therefore, the pixel that the data of 12 bits just can not be reproduced scope saturated, on this during for example for shooting 1 frame if be divided into the image taking of 2 frames, is carried out addition afterwards again, and maximum can obtain the dynamic range of 13 bits.Therefore, the selecting range of Flame Image Process during with the image conversion after enlarging enlarges and obtains the range of choice of wishing to reproduce the corresponding image in position.

And, when the multiframe that surpasses more than 3 frames of 2 frames is crossed in the exposure of X ray, effective image that is bound to export continuously, so can be from the effective image of initial acquisition the time, the frame of following continuous arrival is detected one by one and adds up, till not having effective image.In this method, also be coupled with the corresponding black noise of accumulated image width of cloth number, but because the incident light quantity when usually taking is enough big for black noise, so necessary picture quality can obtain to diagnose the time.

In addition, carried out relatively large X ray exposure according to the thickness of subject 2, even but more with the opposite X ray of estimating that sees through and entered high light in the television camera 41, read by being divided into a plurality of frames, can prevent that also television camera 41 from producing halation.

In the present embodiment, be to handle by the identification that frame-grab plate 14 has carried out effective image, but the identification of effective image shown in Figure 2 handle also can by use within CPU11 and the CPU or outside the CPU that is equipped with carry out with memorizer 12 and software.Along with the high speed of CPU and memory access rate in recent years, the frame memory of processing shown in Figure 2 can realize on the memorizer 12 that CPU uses, thereby realizes that Real time identification handles, and can further reduce cost.

In addition, effectively the accumulation process of image also can realize by frame-grab plate 14.Its embodiment as shown in Figure 5.Among the figure, 15,16,18,20,21 expression frame memories, 17 expression change-over switches, the effective image recognition of 19 expressions portion, 22 presentation video operational parts.Effectively image recognition portion 19 carries out the identification of effective image by method shown in Figure 2, and initial effective image recording is in frame memory 18.If the image of next frame also is effective image, should continue to be recorded in the frame memory 20 by effective image so.If the image of next frame is not effective image,, carry out image output more so with the image addition in image operation handling part 22 in frame memory 18 and the frame memory 20.

Whether the calculation process of carrying out in image operation portion 22 can be that the information of effective image is controlled by obtain expression from effective image recognition portion 19.

Frame memory

18,20,21 can be prepared in advance according to the longest needed frame number of x-ray bombardment time that can imagine.In addition, if frame memory is prepared more greatly, even the frame number increase also can be handled with this frame memory so.As mentioned above, handling when the addition of effective image is when carrying out in frame-grab plate 14, can alleviate the processing burden of CPU11, thereby can adopt cheap CPU.

In addition, after beginning switch 6 is had an X-rayed in operation, will hang down the X ray of amount when emission is taken than X ray continuously from X-ray tube ball 1 by 5 controls of X ray high tension generator, for example stride hundreds of frames and launch continuously, its result will export effective image of striding hundreds of frames continuously from television camera 41.In the CPU11 that has frame-grab plate 14 and memorizer 20, imported effective image continuously, the image in the time of these continuous effective images can being judged as perspective so if surpass the x-ray bombardment time of the maximum that produces when X ray is taken.At this moment, the image of each frame can not addition and directly output.Perhaps, also can the image of each frame not added up but directly output when perspective beginning switch 6 has been imported commencing signal.

Therefore in this embodiment, used the television camera 41 that does not carry out external sync, can also dispose the frame-grab plate of exportable synchronizing signal, also can make television camera 41 external sync and use.In this case, need adjust, so that in successive X ray exposure, also can not make the output of the overexposure of video camera or photo detector saturated the frame per second of TV video camera and filter lens etc.Like this, just can directly realize Fig. 3 and order shown in Figure 4.

In addition, in this embodiment, be that combination by I.I.3 and television camera (ccd video camera) 41 is a picture signal with the X ray conversion of signals, but also can use by flasher, photodiode, read that the switch element of conversion back electric charge forms 2 tie up X ray sensors (flat surface sensor) etc.

In addition, as the explanation of being carried out in the prior art, added the allotter 101 of band photomultiplier tube 102 between television camera 41 in Fig. 1 and the I.I.3, the electric charge that can prevent overexposure or pixel like this is saturated, can also prevent the unnecessary excessive exposure to subject simultaneously.It can feed back after receiving the X ray of ormal weight, makes x ray generator interrupt the generation of X ray.What have such X ray interrupt function has an ABC (AutoBrightness Control) etc.

As mentioned above, in the present invention, can carry out digital photography by adding not, owing to can regularly carry out the exposure of X ray arbitrarily with the low price video camera of external sync function etc., thereby do not need x ray generator is transformed, thereby the low price of implement device.In addition,, a bit transform, just can realize digital radioscopy camera function by adding a radioscopic image blood processor that has been equipped with frame-grab plate etc. with effective image identification function for the existing apparatus that itself has video camera.Like this, the DR mode can be migrated or transform as to the existing radioscopic image diagnostic equipment with X-ray film camera function.And, by increasing the interrupt function of X ray, can effectively prevent the undue irradiation of X ray, and the electric charge of over-exposed or pixel is saturated etc.

Claims

1. a radioscopic image diagnostic equipment is characterized in that, comprising:

X-ray source is exposed to X ray on the subject;

X-ray detection device is oppositely arranged for the mode of described x-ray source with the clamping subject, and obtains the view data of this subject at each frame, with the frame per second of regulation;

Effective image recognition apparatus is the effective image that obtains under the X ray exposure if surpass predetermined threshold value then judge in the meansigma methods of the described view data of described each frame; And

Image processing part if be judged as the frame that contains the effective image under the X ray exposure by described effective image recognition apparatus, then handled the view data in this frame, and is shown, or record, or demonstration and record.

2. the radioscopic image diagnostic equipment according to claim 1 wherein, also is provided with the image portion that adds up, and is under the successive situation of multiframe in the view data that is judged as described radioscopic image, view data in the arbitrary frame in these a plurality of frames that add up.

3. the radioscopic image diagnostic equipment according to claim 2, wherein, described effective image recognition apparatus is frame-grab plate or CPU.

4. according to the claim 2 or the 3 described radioscopic image diagnostic equipments, wherein, the described image portion of adding up is frame-grab plate or CPU and CPU memorizer.

5. the radioscopic image diagnostic equipment according to claim 2, wherein,

Described image adds up portion during from the effective image of initial acquisition, the frame of following continuous arrival is detected one by one and adds up, till not having effective image.

6. the radioscopic image diagnostic equipment according to claim 4, wherein, described image processing part is CPU.

7. according to each the described radioscopic image diagnostic equipment in the claim 1 to 3, wherein, when the X ray from the x-ray source exposure surpasses when a certain amount of, the signal of X ray is interrupted in described x-ray detection device output.

8. according to each the described radioscopic image diagnostic equipment in the claim 1 to 3, wherein, described x-ray detection device adopts the combination of image intensifier and television camera, or 2 ties up X ray sensors for what be made of flasher and photodiode and switch element.

9. the radioscopic image diagnostic equipment according to claim 1, wherein,

Described effective image recognition apparatus again divided by number of pixels, is obtained the meansigma methods of black noise with the bit number addition of each pixel,

Whether described effective image recognition apparatus is judged in described each frame is effective image, when the meansigma methods of described view data surpasses the threshold value that meansigma methods with described black noise adds that a difference obtains, judge that described view data is the effective image that obtains under the X ray exposure.

10. a radioscopic image blood processor is characterized in that, comprising:

Effectively image recognition apparatus if the meansigma methods of the view data of the subject that obtains with the regulation frame per second surpasses predetermined threshold value, then judges it is the effective image that obtains under the X ray exposure in each frame; And

Image processing part is handled the view data that is judged as the effective image under the X ray exposure by described effective image recognition apparatus, and is shown, or record, or demonstration and record.

11. radioscopic image blood processor according to claim 10 wherein, also is provided with the image portion that adds up, and is under the successive situation of multiframe in the view data that is judged as described radioscopic image, the view data of the arbitrary frame that only adds up.

12. radioscopic image blood processor according to claim 11, wherein, described effective image recognition apparatus is frame-grab plate or CPU.

13. according to claim 11 or 12 described radioscopic image blood processor, wherein, the described image portion of adding up is frame-grab plate or CPU and CPU memorizer.

14. the radioscopic image diagnostic equipment according to claim 11, wherein,

15. radioscopic image blood processor according to claim 13, wherein, described image processing part is CPU.

16. radioscopic image blood processor according to claim 10, wherein,