CN102379709B - Radioactive-ray image shooting device and radioactive-ray image shooting method - Google Patents
Radioactive-ray image shooting device and radioactive-ray image shooting method Download PDFInfo
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- CN102379709B CN102379709B CN201110240122.4A CN201110240122A CN102379709B CN 102379709 B CN102379709 B CN 102379709B CN 201110240122 A CN201110240122 A CN 201110240122A CN 102379709 B CN102379709 B CN 102379709B
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Abstract
The invention provides a radioactive-ray image shooting device, which allows rapid positioning of a shot image for process observation to seek reproducibility. The radioactive-ray image shooting device of the invention comprises a radioactive ray source; a radioactive ray detector; a radioactive-ray image data acquiring unit; an image processing unit for generation of a shot image; a storage unit for storing the shot image, shot body information and shooing menu information together; a retrieval unit fro reading out a previous shot image and previous shooting menu information from the storage unit, based on the shot body information; a region setting unit for setting a concerned region for process observation on the previous shot image, based on the information inputted via an input unit; a radiation field control unit which controls the radioactive ray source and a collimator blade according to the previous shooting menu information and the concerned region; and a radiation field lamp which projects a region substantially identical to the concerned region to the radioactive ray detector or the shot body.
Description
Technical field
The present invention relates to X-ray imaging apparatus and radiation image photography method that the radiation image of subject is photographed, specifically, X-ray imaging apparatus and radiation image photography method that in order to process observation repeatability photographs to the same position of subject is preferably related to.
Background technology
In the X-ray of medical field, in order to reduce the irradiation dose of X-ray to subject, collimator is used to control the aperture amount of X-ray manually or automatically.In addition, in recent years, the radioscopic image photographic attachment utilizing flat panel detector (Flat Panel Detector:FPD) to obtain the digital picture of X-ray is used, in order to only to the area illumination X-ray of necessity, namely in order to limit radiation field region, and the control of collimator is carried out.
Such as, in patent documentation 1, disclose the photographic attachment possessed as lower unit: camera unit, it utilizes lonizing radiation to photograph to subject and obtains the image information of subject; Setup unit, it sets the respective information relevant to the photographed region of the kind of sensor being used in photography, the physique such as height, body weight of subject and subject; With photography conditions control unit, it is controlled based on the photography conditions of the information set by setup unit to camera unit.
In patent documentation 2, disclose a kind of establishing method of collimator of x-ray imaging system, the method comprise receive to subject photograph obtained image step, automatically detect the position in the region of the subject in described image step and carry out based on the position in the region of the subject detected the step that automatically collimation device sets, by this setting, collimator is automatically adjusted to the region covered beyond subject.
In patent documentation 3, disclose a kind of radioscopic image photographic attachment, when the photographing region of full length shot is divided into multiple region to carry out X-ray by it under the state that the patient as subject stands along screen, the marker of location is installed in advance on screen, and control the height of x-ray source, x-ray bombardment direction, collimator aperture angle and FPD position, make this marker be projected repeat region in the segmentation image adjoined each other.
Patent documentation 1:JP JP 2001-017416 publication
Patent documentation 2:JP Unexamined Patent 11-276462 publication
Patent documentation 3:JP JP 2009-240681 publication
But, when carrying out X-ray, there are the following problems: photographer needs the control carrying out collimator when each photography, photograph to the Region Of Interest of subject in the same manner as when last time photographs, repeatability photographs higher, this is difficult to for the more shallow photographer of experience.
In addition, in patent documentation 1, although the physique information such as the height of subject, body weight can be utilized and make use of the vertical sensor of solid-state imager, come according to the different each subject of physique, change the characteristic quantity region of photographed region and image procossing, and the aperture amount correspondingly setting lonizing radiation is to carry out the photography of radiation image, but is difficult to repeatability and is photographed in the Region Of Interest for process observation in same subject higher.
In patent documentation 2, when multiple image being photographed in x-ray imaging system, although the setting of collimator automatically can be carried out, identical with patent documentation 1, be difficult to repeatability and photographed in the Region Of Interest for process observation in same subject higher.
In patent documentation 3, when carrying out full length shot photography, although can when synthesizing point each image of ceding territory to photograph obtained, as labelling, the marker of location is projected on the repeat region of the image adjoined each other, but is difficult to repeatability and is photographed in the Region Of Interest for process observation in same subject higher.
Summary of the invention
The object of the invention is to, a kind of X-ray imaging apparatus and the radiation image photography method that can carry out the location of the photographs of the process observation for pursuing repeatability are rapidly provided.
In order to solve above-mentioned problem, the invention provides a kind of X-ray imaging apparatus, photographing to the radiation image of subject, the feature of described X-ray imaging apparatus is to have: radiation source, and it irradiates lonizing radiation to described subject; Collimator, it is for controlling the radiation field region of lonizing radiation; Radiation detector, it detects the lonizing radiation through described subject; View data acquisition unit, it obtains the view data based on the lonizing radiation detected by described radiation detector; Graphics processing unit, it carries out image procossing to described view data, and generates photographs; Memory element, the photography menu information of described photographs with the subject information about subject and the photography conditions about described photographs stores by together; Retrieval unit, it is based on the information will carrying out the subject of process observation, reads the described photographs in the past of this subject and described photography menu information from described memory element; Region setup unit, on its described photographs in the past, setting is used for the Region Of Interest of process observation; Radiation field control unit, its photography menu information based on the described past and described Region Of Interest, control described radiation source and described collimator, to take the region of the described subject roughly the same with described Region Of Interest; With radiation field lamp, it is for the radiation field area illumination visible ray controlled by described collimator, by described radiation field lamp by the region projection roughly the same with described Region Of Interest to described radiation detector or described subject.
In addition, described radiation field control unit, photo distance preferably between described radiation source and described radiation detector is different from the value in the photography menu information in described past, also described radiation source and described collimator are controlled, make the region projecting to described radiation detector or described subject roughly the same.
In addition, described retrieval unit, preferably reads the photo distance between described radiation source with described radiation detector and this identical photographs of photographing, as the described photographs in past from described memory element.
Further, described retrieval unit, the photographs that preferably reading from described memory element photographed last time obtains is as the described photographs in past.
In addition, preferred described photographs is radioscopic image.Further, the described photographs x-ray tomography image that can obtain, be reconstituted by several radioscopic images by tomography process cinematography.In the case, preferably with the described Region Of Interest that the radiation field region of described radiation field light irradiation is in described x-ray tomography image.
In addition, the described photography menu information in past can comprise described Region Of Interest in the past, and described region setup unit sets this Region Of Interest based on the described Region Of Interest in this past.
In addition, preferred described subject information preferably comprises the information of subject ID and photographed region, described retrieval unit, from the described photographs and described photography menu information in past, retrieves the described photographs of the same photographed region of same subject and described photography menu information.
In addition, in order to solve above-mentioned problem, the invention provides a kind of radiation image photography method, be the radiation image photography method of photographing to the radiation image of subject, it has, and input will carry out the step of the information of the subject of process observation; Based on the information of described subject, retrieve the searching step of photographs in the past and photography menu information; Step to the radiation field lamp bright light that radiation field region projects will be used for; On the photographs in the described past retrieved, setting is used for the zone enactment steps of the Region Of Interest of process observation; With based on the photography menu information in described past and described Region Of Interest, radiation source and collimator are controlled, to take the region of the described subject roughly the same with described Region Of Interest, and by the radiation field area illumination visible ray controlled by described collimator, by the radiation field rate-determining steps of the region projection roughly the same with described Region Of Interest to radiation detector or described subject.
According to the present invention, when photographing to the same position of subject in order to process observation, the location of the photographs of high repeatability can be carried out rapidly, and the shortening of photography time can be realized, the burden of subject can also be alleviated.
Accompanying drawing explanation
Fig. 1 is the block diagram of the X-ray imaging apparatus represented involved by embodiments of the present invention.
Fig. 2 is the figure of the relation caring about region and radiation field region.
Fig. 3 is the flow chart of an example of the handling process represented when photographing for the first time.
Fig. 4 is the flow chart of an example of handling process when representing process observation.
(symbol description)
10 X-ray imaging apparatus
12 radiation sources/lamp portion
14 collimators
16 FPD
18 view data obtaining sections
20 operating portions
22 image processing parts
24 display parts
26 storage parts
28 search part
30 radiation sources/lamp/collimator control part
32 Region Of Interest
34 radiation field regions
Detailed description of the invention
X-ray imaging apparatus involved in the present invention is explained below based on preferred implementation shown in the drawings.
Fig. 1 is the block diagram of the structure of the X-ray imaging apparatus represented involved by an embodiment.
X-ray imaging apparatus 10 shown in Fig. 1, is made up of such as lower component: radiation source/lamp portion 12, collimator 14, FPD16, view data obtaining section 18, operating portion 20, image processing part 22, display part 24, storage part 26, search part 28 and radiation source/lamp/collimator control part 30.
Radiation source/lamp portion 12, when using X-ray as lonizing radiation, is made up of such as lower component: X-ray tube, its X-ray irradiation; And lamp, it projects to radiation field region by radiation of visible light radiation field before photography.Radiation source/lamp portion 12 is controlled by radiation source/lamp/collimator control part 30 described later, comes X-ray irradiation and/or visible ray as required.
Collimator 14 is the apertures controlled the radiation field region of lonizing radiation (X-ray), is made up of multiple collimators vanes.Such as, 4 pieces of collimators vanes configure according to the mode forming dimetric each limit, can use the collimator with peristome.
FPD16 is the radiation detector used in DR (digital radiography, digitized photography) mode, detects the lonizing radiation through subject.FPD16 is configured at the position opposed with radiation source/lamp portion 12 and collimator 14, these composing images photography portions.In the image photography portion of this DR mode, existing and such as embedded in the photography portion of the fixed pattern of FPD in the inside of vertical type photographic platform or horizontal camera stand and FPD be accommodated in magazine (cassette), being installed on the movable photography portion in image photography portion when photographing.
In addition, also FPD16 can be replaced, and use CR (computed radiography, Computed Radiography) the image photography portion of mode, after lonizing radiation through subject are stored in imaging plate IP (Imaging Plate) by the image photography portion of this CR mode, with laser, IP is scanned, read the most light (photostimulaed light) of the brightness sent from IP at this moment and obtain view data by computer disposal.
View data obtaining section 18 reads the data detected by FPD16, and exports the Digital Image Data of radiation image.When using IP when replacing FPD16, with laser, scanning being carried out to IP and reading brightness light to the greatest extent, exporting the Digital Image Data of radiation image.
Operating portion 20 is input blocks, is the unit of the various operations for being carried out X-ray imaging apparatus 10 by photographer etc., this operating portion 20 output function information.The concrete form of operating portion 20 is not particularly limited, and uses the known various operating equipments such as keyboard (keyboard), mouse (mouse), touch screen (touch panel).
The Digital Image Data of radiation image, operation information and result for retrieval described later is inputted in image processing part 22.In addition, containing the subject information inputted by photographer etc. and the photography menu information for determining various photography conditions in operation information, containing photographs in the past, subject information and photography menu information in result for retrieval.
Image processing part 22 is graphics processing units, generates and export to have carried out cutting out the photographs after repairing the image procossing such as (trimming) process to the Digital Image Data of radiation image.In addition, the subject information such as name, ID of the subject that output function information comprises.
Then, the photographs in the past inputted as result for retrieval is outputted to display part 24.Image processing part 22 or region setup unit, by observing display part 24 by photographer, while operation operating portion 20, input Region Of Interest set information, setting is used for the Region Of Interest of process observation and exports as Region Of Interest information.In addition, the photography control information of the control information as radiation source, radiation field lamp and collimator is exported.
In display part 24, input and show photographs.Display part 24 is by flat faced displays such as liquid crystal, plasma, organic EL (Electro Luminescence, electroluminescent), or the formation such as CRT (Cathode Ray Tube, cathode ray tube).
In storage part 26, input photographs, subject information and photography menu information.Storage part 26 stores and implements the photographs after image procossing, subject information and photography menu information to the Digital Image Data of radiation image.Photographs gets up to store with the photography menu information of the photography conditions as this photographs etc. and the subject information association such as ID, name, age, sex, photographed region of subject.
Subject information is inputted in search part 28.Search part 28 is retrieved in storage part 26 based on subject information, when having found the subject information met, the photographs in the past of this subject and other subject information be associated with this photographs and menu information of photographing are read from storage part 26, and exports as result for retrieval.In addition, when there is no the subject information finding to meet, will represent that the information of this meaning exports as result for retrieval.
Region Of Interest information and photography control information is inputted in radiation source/lamp/collimator control part 30.Radiation source/lamp/collimator control part 30 is radiation field control units, and according to Region Of Interest information, collimation device controls, and makes the visible ray only Region Of Interest being irradiated to lonizing radiation and lamp.In addition, according to photography control information, the bright light of radiation field lamp and light-off is controlled, from the irradiation of the lonizing radiation of radiation source and the position of radiation source/lamp 12 and FPD16.
Next, the action of X-ray imaging apparatus 10 is described.
First, the relation of territory, irradiation field region and Region Of Interest is described according to Fig. 2.For the Region Of Interest 32 of subject, will Region Of Interest 32 be comprised and scope little as far as possible in clog-free scope is understood as radiation field region 34 to image.
Fig. 3 and Fig. 4 is the flow chart of an example of the handling process representing the radiation image photography method that make use of X-ray imaging apparatus 10.
Fig. 3 represents the handling process of the situation of the situation of photographing first to subject, the information namely not storing this subject any in storage part 26.
The subject information (step S10) such as ID, name, age, sex, photographed region of carrying out the subject of photographing first is being have input by photographer, manually have adjusted the position of radiation source/lamp portion 12 and FPD16 and the aperture amount of collimator 14, and after confirming the region of wishing with radiation field light irradiation, irradiate the photography (step S12) that lonizing radiation carry out radiation image.
The Digital Image Data of the radiation image obtained of photographing is exported from view data obtaining section 18, and is input to image processing part 22.In image processing part 22, the Digital Image Data of radiation image is implemented and cuts out the photographs after the image procossing such as repairing, be shown in display part 24, and be stored in storage part 26.In addition, to associate with this photographs as the photography menu information of the photography conditions etc. of this photographs and subject information and store (step S14).
At this, also Region Of Interest information can be generated according to the information of the radiation source/lamp portion 12 manually set when the photography of this photographs and the position of FPD16 and the aperture amount of collimator 14.
Fig. 4 represents the process observation at same position and the situation of photographing to subject, the handling process of situation of information that namely stores subject in storage part 26.
Inputted the subject information such as the ID of subject from operating portion 20 by photographer as after operation information, export subject information from image processing part 22 to search part 28.Search part 28, based on subject information, retrieves the photographs of last time, photography menu information and subject information from storage part 26, and photographs last time met, photography menu information and subject information is exported as result for retrieval.Result for retrieval is input to image processing part 22, and the photographs of last time, photography menu information and subject information displaying are in display part 24 (step S16).
Then, the photography control information of the bright light of instruction radiation field lamp is exported from image processing part 22.Photography control information is imported into radiation source/lamp/collimator control part 30, by radiation field lamp bright light (step S18).
The photographs of last time, photography menu information and subject information displaying, after display part 24, by operating operating portion 20 by photographer, carrying out input on the photographs of last time and being used for the Region Of Interest of process observation.That is, Region Of Interest set information is inputted.In image processing part 22, set Region Of Interest according to Region Of Interest set information, and export (step S20) as Region Of Interest information.In addition, in order to reflect photography conditions when last time photographs, based on the photography menu information of last time, export position for setting radiation source/lamp portion 12 and FPD16 and from radiation source/lamp portion 12 to the photography control information of the photo distance SID of FPD16 from image processing part 22.
After Region Of Interest information and photography control information are input to radiation source/lamp/collimator control part 30, the position of setting radiation source/lamp portion 12 and FPD16 and photo distance SID, control collimators vanes based on Region Of Interest information, and utilize to come in the FPD16 projection radiation field region (step S22) corresponding with Region Of Interest from the visible ray of radiation field light irradiation.
After the radiation field region corresponding with Region Of Interest is projected on FPD16, is adjusted the position (step S24) of subject by photographer according to radiation field region, and carry out photograph (step S26).
The Digital Image Data of the radiation image that photography obtains exports from view data obtaining section 18, and is input to image processing part 22.In image processing part 22, the Digital Image Data of radiation image is implemented and cuts out the photographs after the image procossing such as repairing, be shown in display part 24, and be stored in storage part 26.In addition, the photography menu information of the photography conditions as this photographs etc. and subject information and this photographs are associatedly carried out storing (step S28).
As mentioned above, when photographing to the same position of subject in order to process observation, by set Region Of Interest being projected in radiation detector or subject with radiation field lamp, the location of the photographs of high repeatability can be carried out rapidly, the shortening of photography time can be realized, also can alleviate the burden of subject.
In addition, though different when photo distance SID photographed from last time, also can control collimators vanes, make the Region Of Interest in the radiation field region, the i.e. subject that project on radiation detector or subject roughly the same.
In addition, X-ray section faultage image that photographs also can be photographed for being synthesized by tomography (tomosynthesis) and be obtained, that reconstituted by several radioscopic images, in the case, in order to easily photograph to the actual scope being used in the x-ray tomography image that image is understood, the radiation field region that radiation field lamp irradiates is preferably the Region Of Interest in x-ray tomography image.In addition, the aperture amount of adjustment collimator, makes to photograph to all radioscopic images when photographing and starting.
Further, the photography menu information being stored in the past in storage part 26 comprises Region Of Interest in the past, and photographer also can replace input Region Of Interest, and Region Of Interest when setting this photography based on the Region Of Interest in past.
In addition, such as, when the photographs at the multiple positions by same subject is stored in storage part 26, also can based on the photographed region information in subject information, from storage part, read the photographs of the photographed region identical with that specified by photographer or the nearest photographed region that obtains of photographing and menu information of photographing.
Above, X-ray imaging apparatus of the present invention and radiation image photography method have been described in detail, but the present invention is not limited to above-mentioned embodiment, also without departing from the spirit and scope of the invention, various improvement or change can be carried out.
Claims (9)
1. an X-ray imaging apparatus, photographs to the radiation image of subject,
The feature of described X-ray imaging apparatus is to have:
Radiation source, it irradiates lonizing radiation to described subject;
Collimator, it is for controlling the radiation field region of lonizing radiation;
Radiation detector, it detects the lonizing radiation through described subject;
View data acquisition unit, it obtains the view data based on the lonizing radiation detected by described radiation detector;
Graphics processing unit, it carries out image procossing to described view data, and generates photographs;
Memory element, the photography menu information of described photographs with the subject information about subject and the photography conditions about described photographs stores by together;
Retrieval unit, it is based on the information wanting the subject of carrying out process observation, the described photography menu information in the described photographs reading the past of this subject from described memory element and the past comprising Region Of Interest in the past;
Region setup unit, its described photographs is in the past used for this Region Of Interest of process observation based on the described Region Of Interest setting in past;
Radiation field control unit, its photography menu information based on the described past and this described Region Of Interest, control described radiation source and described collimator, to take the region of the described subject roughly the same with this described Region Of Interest; With
Radiation field lamp, it is for the radiation field area illumination visible ray controlled by described collimator,
By described radiation field lamp by region projection roughly the same for the described Region Of Interest with this to described radiation detector or described subject.
2. X-ray imaging apparatus according to claim 1, is characterized in that,
Described radiation field control unit, even if the photo distance between described radiation source and described radiation detector is different from the value in the photography menu information in described past, also described radiation source and described collimator are controlled, make the region projecting to described radiation detector or described subject roughly the same.
3. X-ray imaging apparatus according to claim 1, is characterized in that,
Described retrieval unit, reads the photo distance between described radiation source with described radiation detector and this identical photographs of photographing, as the described photographs in past from described memory element.
4. X-ray imaging apparatus according to claim 1, is characterized in that,
Described retrieval unit, the photographs that reading from described memory element photographed last time obtains is as the described photographs in past.
5. X-ray imaging apparatus according to claim 1, is characterized in that,
Described photographs is radioscopic image.
6. X-ray imaging apparatus according to claim 5, is characterized in that,
The x-ray tomography image that described photographs is obtained by tomography process cinematography, reconstituted by several radioscopic images.
7. X-ray imaging apparatus according to claim 6, is characterized in that,
With this described Region Of Interest that the radiation field region of described radiation field light irradiation is in described x-ray tomography image.
8. the X-ray imaging apparatus according to any one in claim 1 ~ 7, is characterized in that,
Described subject packets of information contains the information of subject ID and photographed region,
Described retrieval unit, from the described photographs and described photography menu information in past, retrieves the described photographs of the same photographed region of same subject and described photography menu information.
9., to the radiation image photography method that the radiation image of subject is photographed, it is characterized in that, comprise,
The step of the information of the subject of carrying out process observation is wanted in input;
Based on the information of described subject, the searching step of the photography menu information in the photographs retrieving the past and the past comprising Region Of Interest in the past;
Step to the radiation field lamp bright light that radiation field region projects will be used for;
On the photographs in retrieved described past, the described Region Of Interest setting based on the past is used for the zone enactment steps of this Region Of Interest of process observation; With
Based on photography menu information and this described Region Of Interest in described past, radiation source and collimator are controlled, to take the region of the described subject roughly the same with this described Region Of Interest, and by the radiation field area illumination visible ray controlled by described collimator, by the radiation field rate-determining steps of region projection roughly the same for the described Region Of Interest with this to radiation detector or described subject.
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| JP2010189320A JP5595184B2 (en) | 2010-08-26 | 2010-08-26 | Radiographic imaging apparatus and radiographic imaging method |
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| CN104921740B (en) * | 2014-03-20 | 2018-08-17 | 上海西门子医疗器械有限公司 | Imaging method, imaging device and x ray machines |
| US20170082557A1 (en) * | 2015-09-21 | 2017-03-23 | General Electric Company | Method and system to image biopsy samples during an x-ray guided biopsy procedure |
| JP6809888B2 (en) * | 2015-12-21 | 2021-01-06 | キヤノンメディカルシステムズ株式会社 | Mammography equipment |
| JP6677100B2 (en) * | 2016-06-24 | 2020-04-08 | コニカミノルタ株式会社 | Radiation imaging system |
| JP7053104B2 (en) * | 2019-02-08 | 2022-04-12 | 富士フイルム株式会社 | Radiation imaging system, medical imaging system, control method, and control program |
| US11399795B2 (en) * | 2019-07-09 | 2022-08-02 | Canon Medical Systems Corporation | X-ray CT apparatus and imaging control method |
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| CN101147682A (en) * | 2006-09-22 | 2008-03-26 | 柯尼卡美能达医疗印刷器材株式会社 | Radiological image capturing system and radiological image capturing method |
| CN101518454A (en) * | 2008-02-28 | 2009-09-02 | 富士胶片株式会社 | Radiation image capturing system, radiation image capturing method and program |
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