CN108324294A - X-ray filming apparatus - Google Patents
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- CN108324294A CN108324294A CN201711343586.1A CN201711343586A CN108324294A CN 108324294 A CN108324294 A CN 108324294A CN 201711343586 A CN201711343586 A CN 201711343586A CN 108324294 A CN108324294 A CN 108324294A
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Abstract
The present invention provides X-ray filming apparatus.To the 4 of x-ray irradiation area among positioned at cathode side while be also precisely detected, and correctly detect x-ray irradiation area.X-ray filming apparatus is provided, is had：X-ray source with the X-ray tube to subject X-ray irradiation；The X-ray aperture that x-ray irradiation area to being irradiated to subject from the x-ray source is limited；The X-ray detector of the X-ray of the subject is irradiated and is penetrated in detection via the X-ray aperture；The image processing part of radioscopic image is generated based on the electric signal exported from the X-ray detector；To 4 of the x-ray irradiation area in the radioscopic image that is generated by the image processing part of expression among positioned at the cathode side of the X-ray tube while the cathode test section that is detected of cathode site information；With the irradiation area test section of the x-ray irradiation area in the radioscopic image is detected based on the cathode site information obtained by the cathode test section.
Description
Technical field
The present invention relates to X-ray filming apparatus, utilize the irradiated region for the X-ray that X-ray aperture settings are irradiated from x-ray source
Domain detects the X-ray through region corresponding with set irradiation area using detector, thus carries out image conversion.
Background technology
A kind of X-ray filming apparatus known to past also reduces X-ray other than reducing the radiation for not needing shooting area
Scattered ray, thus improve image quality, which with this end in view has and penetrate the X irradiated from X-ray tube
The X-ray aperture that the range of exposures of line reduces.In such X-ray filming apparatus, X-ray is obtained using position detector etc.
The location information of aperture, by with the comparable area image in the opening portion of X-ray aperture.
For example, Patent Document 1 discloses being based on location information or X-ray tube angulation by X-ray aperture position detector
Information etc. determines the X-ray imaging apparatus of the X-ray aperture region in image.
Existing technical literature
Patent document
Patent document 1：JP Tetsukai 2008-200075 bulletins
But in the X-ray imaging apparatus of patent document 1, due to not considering therapeutic effect, do not refer to
Difference is generated in acutance when the aperture of the anode-side positioned at X-ray tube is in the aperture with cathode side, sometimes X-ray aperture area
The accuracy of detection in domain can reduce.
X-ray tube by applying the high voltage of tens kV to 100 kV between cathode (filament) and anode (target),
So that the thermoelectron released from cathode is accelerated and collide anode to anode, thus generates X-ray.At this moment, in one anode direction of cathode
On, the X-ray due to being irradiated to anode-side is released after advancing in anode, and the X-ray of low energy is more by anode
Metal absorption, the X-ray of high-energy is more released.On the other hand, the X-ray for being irradiated to cathode side is not likely to by quilt
The influence of Metal absorption in anode.Therefore, anode-side is irradiated in K-A among the X-ray that X-ray tube is irradiated
X-ray Energy distribution can be displaced to higher than be irradiated to cathode side X-ray Energy distribution side (with reference to figure 11).
Therefore, in through the radioscopic image after aperture, and it is located at anode among 4 sides of the x-ray irradiation area of rectangle
Picture near the side of side is compared, and the acutance of the picture near the side of cathode side can become to mitigate.
For this reason, if the side for not grasping x-ray irradiation area correctly is positioned at anode-side or to be located at cathode
Side cannot precisely detect x-ray irradiation area sometimes.
Invention content
The present invention is proposed in view of above-mentioned actual conditions, it is intended that the x-ray bombardment after X-ray transparent aperture
The 4 of region among positioned at cathode side while also precisely detect, to correctly detect x-ray irradiation area.
In order to solve the above problems, the present invention provides means below.
One embodiment of the present invention provides a kind of X-ray filming apparatus, which has：With to tested
The x-ray source of the X-ray tube of body X-ray irradiation；X-ray irradiation area to being irradiated to subject from the x-ray source limits
The X-ray aperture of system；The X-ray detector of the X-ray of the subject is irradiated and is penetrated in detection via the X-ray aperture；Base
The image processing part of radioscopic image is generated in the electric signal exported from the X-ray detector；To indicating by the image processing part
4 of x-ray irradiation area in the radioscopic image of generation among positioned at the cathode side of the X-ray tube while cathode position
Confidence ceases the cathode test section being detected；With it is described to detect based on the cathode site information obtained by the cathode test section
The irradiation area test section of x-ray irradiation area in radioscopic image.
Invention effect
According to the present invention, to the 4 of x-ray irradiation area among positioned at cathode side while also can precisely examine
It surveys, x-ray irradiation area can be correctly detected.
Description of the drawings
Fig. 1 is the block diagram for the schematic configuration for indicating the X-ray filming apparatus involved by the 1st embodiment of the present invention.
Fig. 2 is the place of the storage setting information in the X-ray filming apparatus indicated involved by the 1st embodiment of the present invention
The flow chart of the flow of reason.
Fig. 3 (A) be the present invention the 1st embodiment involved by X-ray filming apparatus in explanation for being shot
The figure in the reading region of the distribution core of the image arrived, Fig. 3 (B) are that the X-ray involved by the 1st embodiment of the present invention is clapped
It takes the photograph in device and indicates the curve graph of distribution core result.
Fig. 4 is the x-ray irradiation area inspection in the X-ray filming apparatus indicated involved by the 1st embodiment of the present invention
Survey the flow chart of the flow of processing.
Fig. 5 is that the cathode site information in the X-ray filming apparatus indicated involved by the 1st embodiment of the present invention generates
The flow chart of the flow of processing.
Fig. 6 (A) be will read region pixel value mark and draw obtained from curve graph, Fig. 6 (B) be with carried out between take processing
The figure that is compared of curve graph.
Fig. 7 is that the cathode site information in the X-ray filming apparatus indicated involved by the 2nd embodiment of the present invention generates
The flow chart of the flow of processing.
Fig. 8 is that the X-ray involved by the 1st embodiment of the present invention and the variation of the 2nd embodiment shoots dress
The curve graph of access and the relationship of location of pixels between setting when taking processing between expression.
Fig. 9 is that the X-ray involved by the 1st embodiment of the present invention and the variation of the 2nd embodiment shoots dress
The curve graph of access and the relationship of tube voltage between setting when taking processing between expression.
Figure 10 is that the X-ray involved by the 1st embodiment of the present invention and the variation of the 2nd embodiment shoots dress
Set it is middle indicate generate frequency image when differential filter coefficient and location of pixels relationship curve graph.
Figure 11 (A) is the figure of the situation for the X-ray for illustrating to generate from X-ray tube, and Figure 11 (B) is to compare to be irradiated to anode-side
With the curve graph of the Energy distribution of the X-ray of cathode side.
Label declaration
1 image processing unit
2 system control units
3 displays
10 X-ray tube rotating mechanisms
11 x-ray sources
12 X-ray apertures
13 X-ray detectors
14 detector rotating mechanisms
20 image processing parts
21 image storage parts
22 cathode test sections
23 irradiation area test sections
28 system information storage parts
30 radioscopic images
31 x-ray irradiation areas
32 read region
P subjects
Specific implementation mode
Hereinafter, embodiments of the present invention will be described for refer to the attached drawing.
X-ray filming apparatus involved by embodiments of the present invention has：It is penetrated with the X to subject X-ray irradiation
The x-ray source 11 of spool；The X-ray aperture that x-ray irradiation area to being irradiated to subject P from x-ray source 11 is limited
12；The X-ray detector 13 of the X-ray of subject P is irradiated and is penetrated in detection via X-ray aperture 3；Make X-ray detector 13
The rotating mechanism 14 of rotation；The image processing part of radioscopic image is generated based on the electric signal exported from X-ray detector 13
20；It is temporarily stored in the image storage part 21 of the radioscopic image generated in image processing part 20；To indicating generated X-ray
4 of x-ray irradiation area in image among positioned at the cathode side of X-ray tube while cathode site information be detected
Cathode test section 22；With based on the cathode site information obtained by cathode test section 22 come the x-ray bombardment area in detection image
The irradiation area test section 23 in domain.
<1st embodiment>
Specifically, as shown in Figure 1, the X-ray filming apparatus involved by the 1st embodiment of the present invention has：X-ray source
11, X-ray aperture 12, X-ray detector 13, rotating mechanism 14, image processing unit 1, system control unit 2 and display
Device 3.X-ray filming apparatus can both shoot radioscopy image, can also shoot X-ray shooting image (static image).
X-ray source 11 have generate X-ray X-ray tube, and by the x-ray bombardment generated in X-ray tube to be detected
Body.X-ray tube is rotated by X-ray tube rotating mechanism 10 drive as needed.X-ray aperture 12 from x-ray source 11 to being irradiated to
The x-ray irradiation area of subject P is limited.The detection of X-ray detector 13 irradiates via X-ray aperture 3 and through tested
The X-ray of body P, by with the comparable electric signal output of the amount of x-ray of transmission to image processing unit 1.X-ray detector 13 is tested
It surveys device rotating mechanism 14 and rotates driving.
Image processing unit 1 has：Image processing part 20, image storage part 21, cathode test section 22 and irradiation area
Test section 23.
Image processing part 20 generates radioscopic image based on the electric signal exported from X-ray detector 13, carries out gray scale etc.
Necessary image procossing, the image storage parts 21 such as grade processing are temporarily stored in the radioscopic image generated in image processing part 20.
It is penetrated positioned at X among 4 sides of the x-ray irradiation area in the radioscopic image generated to expression of cathode test section 22
The cathode site information on the side of the cathode side of spool is detected.
More specifically, for example, the storage region that aftermentioned system control unit 2 is deposited in the acquirement of cathode test section 22 is
The setting information of the X-ray tube of x-ray source 11 in system information storage part 28, is determined based on setting information by image processing part
Cathode site on 20 radioscopic images generated, and generate cathode site information.At this moment, in X-ray tube or X-ray detector
In the case that 13 are rotating, since the relative position of the cathode on the radioscopic image that is generated is different, also obtain together
The rotation information of X-ray tube based on X-ray tube rotating mechanism 10.
Here, the setting information of so-called X-ray tube, is for example stored in by setting person when X-ray filming apparatus is arranged
Information in system control unit 2 e.g. follows process shown in the flow chart of Fig. 2 and the information that obtains.
Hereinafter, illustrating setting information being stored in the mistake of the storage region of system control unit according to the flow chart of Fig. 2
Journey.
In step S11, when X-ray filming apparatus is arranged, pressed in the state of no subject by X-ray filming apparatus
Image is obtained according to the operation of setting person.In following step S12, in the radioscopic image obtained by step S11, such as Fig. 3
(A) shown in like that, 4 sides of the x-ray irradiation area 31 on radioscopic image 30 are read respectively by advance in cross-border mode
The pixel in the reading region 32 for the linear that determining multiple pixels are constituted, and make the distribution of pixel value.
In step S13, the distribution results of the pixel value on 4 sides based on x-ray irradiation area are detected positioned at cathode side
Side.For example, whether the gradient of judgement distribution is more than respectively given threshold value.It is located at the moon among 4 sides of x-ray irradiation area
Pole side near and positioned at anode-side while near, the acutance of image is different, therefore as shown in Fig. 3 (B), is marking
In the case of having painted the pixel value for the location of pixels for reading region 32, the area in the reading region and anode-side of cathode side
Domain, gradient are very different.Similarly, in the reading region of cathode side read other than region and cathode side, gradient
Also it is very different.
Therefore, by by it is each read region distribution results (such as gradient of the curve graph of Fig. 3 (B)) and give threshold
Value is compared, can be from the 4 of x-ray irradiation area when determining positioned at cathode side.Therefore, in step S13, judge X-ray
Whether the distribution results on 4 sides of irradiation area are more than respectively that given threshold value is considered as not being located at more than threshold value
The side of cathode side proceeds to step S14, by be not cathode side the meaning label storage to system information storage part 28.In step
In the judgement of rapid S13, in the case where distribution results are less than threshold value, it is considered as, positioned at the side of cathode side, proceeding to step S15,
By be cathode side the meaning label storage to system information storage part 28.In this way, as setting information, by the moon of x-ray source
The location information of pole and anode is stored to system information storage part 28, terminates above-mentioned processing.In addition, above-mentioned processing is clapped in X-ray
It is carried out when taking the photograph the setting of device primary.
Irradiation area test section 23 is penetrated based on the cathode site information obtained by cathode test section 22 come the X in detection image
Line irradiation area.That is, the position of the boundary line of detection x-ray irradiation area.That is, irradiation area test section 23 is detected according to cathode
The output in portion 22 be cathode site information determine the 4 of x-ray irradiation area among positioned at cathode side while, and in cathode side
While and this other than 3 while keep x-ray irradiation area detection process different according to respective characteristic, thus correctly detect X
Radiation exposure region.
The system that system control unit 2 has the various information including setting information of the storage comprising above-mentioned x-ray source
Information storage part 28 controls image processing unit 1 and above-mentioned each portion, and make to generate in image processing unit 1
Image is shown in display 3.
Display 3 is generated by image processing unit 1 to show according to the instruction of system control unit 2 and is given excessively
The radioscopic image of image procossing.
In addition, image processing unit 1 and system control unit 2 can be configured to by part of it or all comprising CPU (in
Entreat processing unit), the system of memory etc., the program for being stored in storage part in advance is loaded into memory and executed by CPU, thus
It can realize the function in each portion for constituting image processing unit 1 and system control unit 2.In addition, part or all of function
It can also be by ASIC (Application Specific Integrated Circuit, application-specific integrated circuit) or FPGA (Field
Programmable Gate Array, field programmable gate array) etc. hardware constitute.
It is configured as described using the location information of cathode and anode as setting information to illustrate to follow the flow chart of Fig. 4
The x-ray irradiation area detection process being stored in the X-ray filming apparatus of system information storage part 28.
In step S41, irradiation area test section 23, which is taken into, to be generated in image processing part 20 and stores image storage part
21 radioscopic image proceeds to step S42.In step S42, irradiation area test section 23 is directed in be taken into radioscopic image
4 sides on boundary of x-ray irradiation area be nearby based respectively on the cathode site information that is obtained from cathode test section 22 to judge
Whether be cathode side side.In the case where it is the side of cathode side that step S42, which is determined as, step S43 is proceeded to, is being determined as not
Be cathode side side in the case of, proceed to step S44.
Here, whether what irradiation area test section 23 carried out is that the judgement on side of cathode side is based on from cathode test section 22
The cathode site information of acquirement carries out.Cathode site information in cathode test section 22 follows cathode site information generation processing
To generate.Show that cathode site information generates an example of the involved flow chart of processing in Fig. 5.
In the step S51 of Fig. 5, cathode test section 22 obtains setting information from system information storage part 28.Next
Step S52 obtains the rotation information of x-ray source 11 and X-ray detector 2.In step S53, based on setting information and turn
Dynamic information generates the cathode site information on radioscopic image, and is output to irradiation area test section 23.
Return to Fig. 4, in step S43, in order to detect positioned at the boundary line on the side of cathode side generate the 1st between take image.
Step S44, in order to detect positioned at cathode side other than while boundary line and take image between generating the 2nd.
As shown in Figure 6, if curve graph obtained from being marked and drawed with reference to the reading region carried out near each side, for
Cathode side near reading region result and for other than this while near reading region result in, in curve graph
Gradient it is different.For example, the difference of gradient be 3 times in the case of, in order to the precision on the side other than cathode apparently
Unanimously, access between image will be taken to be set as taking 3 times to fetch between image between the 2nd between the 1st.
In the flow chart of figure 4, access is set as 30 between image being taken between the 1st, will take between the 2nd to fetch between image and is set as
10.By into processing is in the ranks taken, can so make the gradient of the two apparently unanimously promote place as the right figure of Fig. 6
Reason.
In step S45, image is taken to generate high frequency imaging respectively taking image and the 2nd between the 1st.This is to pass through
It generates and the high frequency imaging that low frequency component removes is extracted into edge using differential filter etc., thus detect x-ray irradiation area
Boundary.In step S46, straight-line detection is carried out by Hough transform respectively to two high frequency imagings, detects the length of straight line
Degree, boundary value concentration difference, decide whether be x-ray irradiation area boundary line, to determine the coordinate of x-ray irradiation area.
In following step S47, the coordinate transform for the x-ray irradiation area determined is penetrated at for the X before image being taken to generate
The coordinate of line image finally detects x-ray irradiation area, and terminates above-mentioned processing.
In this way, according to the present embodiment, subject is penetrated based on generating in X-ray tube and being irradiated via X-ray aperture
X-ray obtain image, in the images determine x-ray irradiation area determined x-ray bombardment in this case
After whether each side in region is located at the cathode side of X-ray tube, positioned at cathode side while other than with this while keep processing different, from
And detect x-ray irradiation area.Therefore, by for other compared with the lower cathode side of acutance while carry out with its characteristic
Corresponding image procossing can accurately detect the boundary line of x-ray irradiation area.On the other hand, other than due to cathode side
While with cathode side while compared with acutance higher, therefore for the side other than cathode side, handled by corresponding with characteristic, also can
Enough boundary lines for accurately detecting x-ray irradiation area.As a result, the x-ray bombardment on radioscopic image can be correctly detected
Region.
By correctly detecting x-ray irradiation area, due in figures such as tonal gradation processing, the frequency processings carried out later
X-ray irradiation area can be used when as processing, therefore can improve image quality.
In the case of insertion that X-ray aperture is oblique, or the X on radioscopic image is set to penetrate X-ray tube injection
In the case that line irradiation area becomes trapezoidal, also determine the position of cathode side, cathode side while and other than this while make detection
Processing is different, and thus, it is possible to improve the accuracy of detection of x-ray irradiation area.
<2nd embodiment>
In X-ray filming apparatus involved by the 1st above-mentioned embodiment, it is based on setting information and rotation information etc.
Information possessed by information storage part unite to judge the cathode site on radioscopic image.In the present embodiment, based on acquirement
Radioscopic image judges the cathode site shot every time.Due to X-ray filming apparatus composition and cathode site judgement with
Outer processing is identical as above first embodiment, and and the description is omitted, and the flow chart explanation for following Fig. 7 below passes through at image
It manages to judge the cathode site determination processing of cathode site.
In step S71, irradiation area test section 23, which is taken into, to be generated in image processing part 20 and stores image storage part
21 radioscopic image proceeds to step S72.In following step S72, in the image obtained by step S71, such as Fig. 3
(A) shown in like that, 4 sides of the x-ray irradiation area 31 on image 30 are read respectively by being predefined in a manner of cross-border
The pixel in the reading region 32 of linear that constitutes of multiple pixels, and be made distribution.
In step S73, judge whether the distribution results on 4 sides of x-ray irradiation area are more than respectively given threshold value.In X
The 4 of radiation exposure region among positioned at cathode side while near and near the side of anode-side, the acutance of image is not
Together, therefore as shown in Fig. 3 (B), in the case where having marked and drawed the pixel value for the location of pixels for reading region 32, in the moon
The region in the reading region and anode-side of pole side, gradient are very different.Similarly, in the reading region of cathode side and the moon
Reading region other than the side of pole, gradient are also very different.In addition, not applying X-ray aperture i.e. x-ray bombardment when shooting
In the case that region is not limited by X-ray aperture, in the case where marking and drawing the pixel value for location of pixels to reading region 32,
Gradient essentially becomes 0.
Therefore, by comparing it is each read region distribution results (such as gradient of the curve graph of Fig. 3 (B)) and give
Threshold value A can determine that whether used X-ray aperture.In step S72, judge that the distribution results on 4 sides of x-ray irradiation area are each
From whether being more than that given threshold value A has been regarded as X-ray aperture more than threshold value A, step S74 is proceeded to.It is penetrated in X
In the case that the distribution results on 4 sides of line irradiation area are respectively less than given threshold value A, it is regarded as not having X-ray aperture, proceeds to
Step S77.
It is determined from 4 sides of x-ray irradiation area based on each distribution results for reading region in step S74 and is located at cathode side
Side.That is, in step S74, judge whether the distribution results on 4 sides of x-ray irradiation area are more than respectively given threshold value B,
In the case of more than threshold value B, be considered as not be located at cathode side side, proceed to step S75, by be not cathode side the meaning mark
Storage region of the note storage to cathode test section 22.
In the judgement of step S74, in the case where distribution results are less than threshold value B, it is considered as positioned at the side of cathode side, it is preceding
Enter step S76, by be cathode side the meaning label storage to cathode test section 22 storage region.In this way, will indicate that X is penetrated
Storage region of the cathode site information storage of the position of the cathode of line source to cathode test section 22.Judge that 4 sides are complete in step S77
Whether the processing in portion terminates, if being not finished, returns to step S73, repeats the above.The feelings that the processing of whole terminates on 4 sides
Terminate above-mentioned processing under condition.
(variation)
In X-ray filming apparatus involved by the 1st above-mentioned embodiment and the 2nd embodiment, illustrate
Take the example fetched between being set with fixed value when processing.As shown in the graph of figure 8, it is located at X-ray detector in X-ray tube
Center in the case of, fetch between being made according to the position of X-ray aperture from X-ray detector center variable, in this way can be into
The more good detection of row precision.
In addition, X-ray tube not be located at X-ray detector center in the case of (such as X-ray tube have pivot angle, into
Row injects the case where shooting), it fetches between capable of being also variably set according to geometric position.
Further, distribution results can be applied to the tube voltage of X-ray tube when X-ray is shot due to change.That is, pipe
Voltage is higher, is more influenced by X-ray transparent rate and scattered ray, and the gradient of distribution is gentler.Therefore, in this case,
As shown in Figure 9, according to a proportionate relationship for access and tube voltage, geometric position is depended not only upon, is also relied on
Tube voltage can be precisely detected by fetching between change.
Still further, in the above example, illustrate based on cathode site information come the side that cathode is located at and this with
Outer side is fetched different examples between making, but takes image between have to not necessarily generating, micro- when can also make generation high frequency imaging
The COEFFICIENT K of filter-divider cathode side while other than with this while it is different.It is shown with from the center of X-ray detector in Figure 10
Playing peripherally portion makes the example that the coefficient of differential filter becomes larger.It can also be by being generated in cathode side (Yn direction sides) increasing
The coefficient of the differential filter used when high frequency imaging, to point at the boundary line of the x-ray irradiation area of cathode side
It this case that the gentle slope of cloth makes corrections.
In addition, the present invention is not limited to the above embodiments, but it include various modifications example.Embodiment as escribed above
It is to be not necessarily limited to the whole compositions for having explanation to be best understood from the detailed description of the present invention and progress.Such as
A part for the composition of each embodiment can carry out the addition, deletion, displacement of other compositions.
Claims (6)
1. a kind of X-ray filming apparatus, has：
X-ray source with the X-ray tube to subject X-ray irradiation；
The X-ray aperture that x-ray irradiation area to being irradiated to subject from the x-ray source is limited；
The X-ray detector of the X-ray of the subject is irradiated and is penetrated in detection via the X-ray aperture；
The image processing part of radioscopic image is generated based on the electric signal exported from the X-ray detector；
It is penetrated positioned at the X among 4 sides of the x-ray irradiation area in the radioscopic image generated by the image processing part to expression
The cathode test section that the cathode site information on the side of the cathode side of spool is detected；With
The x-ray bombardment area in the radioscopic image is detected based on the cathode site information obtained by the cathode test section
The irradiation area test section in domain.
2. X-ray filming apparatus according to claim 1, wherein
The cathode test section detects the letter of the cathode site on the radioscopic image based on the location information of the X-ray tube
Breath.
3. X-ray filming apparatus according to claim 1, wherein
The cathode test section is examined based on the rotation information of the location information of the X-ray tube and the X-ray detector
Survey the cathode site information in described image.
4. X-ray filming apparatus according to claim 1, wherein
The irradiation area test section by the radioscopic image into processing is in the ranks taken, to generate for detecting the X-ray
Image is taken between the 1st of the boundary line on the side of the cathode side positioned at the X-ray tube in image and for detecting the X-ray
In image be located at cathode side other than while boundary line the 2nd between take image, and image and institute are taken between the described 1st
State the irradiation area for being taken between the 2nd and detecting X-ray in image.
5. X-ray filming apparatus according to claim 1, wherein
The cathode test section is by handling the radioscopic image generated by described image processing unit, to detect described the moon
Pole location information.
6. X-ray filming apparatus according to claim 5, wherein
The inclination of the distribution of the variation of the pixel value of the cathode test section based on the location of pixels for the radioscopic image
Degree, to detect the cathode site information.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-007459 | 2017-01-19 | ||
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000245731A (en) * | 1999-03-04 | 2000-09-12 | Toshiba Corp | Radiographic device |
| US20070086559A1 (en) * | 2003-05-13 | 2007-04-19 | Dobbs Andrew B | Method and system for simulating X-ray images |
| JP2008200075A (en) * | 2007-02-16 | 2008-09-04 | Hitachi Medical Corp | X-ray image diagnostic apparatus |
| CN102289787A (en) * | 2010-05-06 | 2011-12-21 | 西门子公司 | Method and x-ray system for processing an x-ray image |
| CN104955395A (en) * | 2013-01-23 | 2015-09-30 | 株式会社东芝 | X-ray diagnostic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000245731A (en) * | 1999-03-04 | 2000-09-12 | Toshiba Corp | Radiographic device |
| US20070086559A1 (en) * | 2003-05-13 | 2007-04-19 | Dobbs Andrew B | Method and system for simulating X-ray images |
| JP2008200075A (en) * | 2007-02-16 | 2008-09-04 | Hitachi Medical Corp | X-ray image diagnostic apparatus |
| CN102289787A (en) * | 2010-05-06 | 2011-12-21 | 西门子公司 | Method and x-ray system for processing an x-ray image |
| CN104955395A (en) * | 2013-01-23 | 2015-09-30 | 株式会社东芝 | X-ray diagnostic device |
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| CN108324294B (en) | 2021-05-11 |
| JP6789130B2 (en) | 2020-11-25 |
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