CN106773513B - The method of the ray automatic tracing imaging of digital radiography - Google Patents
The method of the ray automatic tracing imaging of digital radiography Download PDFInfo
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- CN106773513B CN106773513B CN201611253856.5A CN201611253856A CN106773513B CN 106773513 B CN106773513 B CN 106773513B CN 201611253856 A CN201611253856 A CN 201611253856A CN 106773513 B CN106773513 B CN 106773513B
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- 238000002601 radiography Methods 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003384 imaging method Methods 0.000 title claims abstract description 14
- 208000019300 CLIPPERS Diseases 0.000 claims abstract description 31
- 208000021930 chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids Diseases 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000000007 visual effect Effects 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
- G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
Abstract
A kind of method of the ray automatic tracing imaging of digital radiography, is related to optical technical field.This method comprises the following steps：Vertical range and bulb deflection angle of the acquisition bulb focus to detector；Obtain the beam-defining clipper opening half-angle of manual beam-defining clipper corresponding with longitudinal maximum effective dimensions of detector；Obtain the eccentricity of X-ray that the bulb of digital radiography corresponding with longitudinal maximum effective dimensions of detector is launched visual field projection centre and bulb focus projection on the detector；Obtain the lengthwise position of the lengthwise position and the preceding detector center of detector movement of the bulb focus of bulb；It obtains detector and carries out mobile required movement value in a longitudinal direction；Mobile detector is to corresponding position.The method of the ray automatic tracing imaging of the digital radiography of the present invention, can vertically move the detector of digital radiography, the X-ray that bulb is launched is made to fall into the effective scope of detection of detector to be imaged automatically.
Description
Technical field
The present invention relates to optical technical field, more particularly to the ray automatic tracing of a kind of digital radiography at
The method of picture.
Background technology
Digital radiography is divided into the digital radiography established using automatic beam-defining clipper and using manual
The digital radiography that beam-defining clipper is established.Wherein, the digital radiography cost established using manual beam-defining clipper
It is relatively low, therefore be widely used.However the existing digital radiography established using manual beam-defining clipper can not automatic tracing
The ray that the bulb of digital radiography is launched needs operating personnel to move manually at this time to automatically move detector
Dynamic detector, makes the ray that the bulb of digital radiography is launched fall into the effective scope of detection of detector, number
X-ray shooting system can obtain the image of needs.Since detector is set to the bottom of test platform under normal conditions,
The ray that manual mobile detector makes the bulb of digital radiography launch is fallen into the effective scope of detection of detector
It is not a nothing the matter.
Invention content
In order to solve using manual beam-defining clipper establish digital radiography can not automatic tracing digital X-ray take the photograph
The ray that the bulb of shadow system is launched makes the bulb of digital radiography emit to vertically move detector automatically
The ray gone out falls into the technical problem in the effective scope of detection of detector；The present invention provides a kind of photographies of digital X-ray to be
The method of the ray automatic tracing imaging of system, includes the following steps：
S01, digital radiography obtain the focus of the bulb of digital radiography to the vertical of detector
The deflection angle of the bulb of distance and digital radiography；
S02 obtains the beam-defining clipper opening half-angle of manual beam-defining clipper corresponding with longitudinal maximum effective dimensions of detector；
S03, the bulb for obtaining digital radiography corresponding with longitudinal maximum effective dimensions of detector are launched
X-ray visual field projection centre and bulb focus projection on the detector eccentricity；
S04, digital radiography obtain the lengthwise position of the bulb focus of the bulb of digital radiography
With the lengthwise position at detector center before the detector movement of digital radiography；
S05 obtains to make the ray that the bulb of digital radiography is launched fall into effective detection of detector
Detector carries out mobile required movement value in a longitudinal direction in range；
S06, digital radiography make the bulb of digital radiography launch according to acquisition
Ray falls into detector in the effective scope of detection of detector and carries out mobile required movement value, mobile number in a longitudinal direction
The detector of X-ray shooting system is to corresponding position.
The method of the ray automatic tracing imaging of the digital radiography of the present invention, may be implemented using limit manually
The X-ray that the bulb for the digital radiography automatic tracing digital radiography that beam device is established is launched, automatically
The detector for vertically moving digital radiography, makes the X-ray that the bulb of digital radiography is launched fall into
To be imaged in the effective scope of detection of detector.
Description of the drawings
Fig. 1 is the method flow diagram of the ray automatic tracing imaging of the digital radiography of the present invention.
Specific implementation mode
The side of the ray automatic tracing imaging for the digital radiography that the invention will now be described in detail with reference to the accompanying drawings
Method.
Existing digital radiography include bulb, beam-defining clipper, the high pressure generator powered to bulb, detector,
Image acquisition workstation and power distribution unit, the X-ray that bulb is launched are radiated at what needs were imaged after beam-defining clipper limits beam
On object, the object being imaged is needed to be typically placed in test platform, detector is set to the bottom of test platform, and being radiated at needs
X-ray on the object to be imaged is fallen into the effective scope of detection of detector, and x-ray photon signal is converted into counting by detector
Word signal is simultaneously transmitted to image acquisition workstation, and image acquisition workstation is imaged after carrying out certain image procossing.
Wherein, beam-defining clipper is divided into automatic beam-defining clipper and manual beam-defining clipper.The digital X-ray established using manual beam-defining clipper is taken the photograph
Shadow system can not automatic tracing digital radiography the ray launched of bulb to automatically move detector, therefore
The manual mobile detector of operating personnel is needed, the ray that the bulb of digital radiography is launched is made to fall into detector
In effective scope of detection.
In order to make the digital radiography automatic tracing digital radiography established using manual beam-defining clipper
The ray launched of bulb to vertically move detector automatically, make what the bulb of digital radiography launched to penetrate
Line is fallen into the effective scope of detection of detector, and the present invention provides a kind of ray automatic tracings of digital radiography
The method of imaging, as shown in Figure 1, including the following steps：
S01, digital radiography obtain the focus of the bulb of digital radiography to the vertical of detector
The deflection angle of the bulb of distance and digital radiography；
S02 obtains the beam-defining clipper opening half-angle of manual beam-defining clipper corresponding with longitudinal maximum effective dimensions of detector；
S03, the bulb for obtaining digital radiography corresponding with longitudinal maximum effective dimensions of detector are launched
X-ray visual field projection centre and bulb focus projection on the detector eccentricity；
S04, digital radiography obtain the lengthwise position of the bulb focus of the bulb of digital radiography
With the lengthwise position at detector center before the detector movement of digital radiography；
S05 obtains to make the ray that the bulb of digital radiography is launched fall into effective detection of detector
Detector carries out mobile required movement value in a longitudinal direction in range；
S06, digital radiography make the bulb of digital radiography launch according to acquisition
Ray falls into detector in the effective scope of detection of detector and carries out mobile required movement value, mobile number in a longitudinal direction
The detector of X-ray shooting system is to corresponding position.
Existing digital radiography, the digital radiography either established using automatic beam-defining clipper,
Or the digital radiography established using manual beam-defining clipper can be obtained digital X-ray by corresponding sensor and be taken the photograph
The focus of the bulb of shadow system is penetrated to the vertical range of detector, the deflection angle of the bulb of digital radiography, number X
Before the lengthwise position of the bulb focus of the bulb of line camera chain and the detector movement of digital radiography in detector
The lengthwise position of the heart.
The beam-defining clipper opening half-angle of the acquisition manual beam-defining clipper corresponding with longitudinal maximum effective dimensions of detector
Specific method is：
FOV=SIDz [tg Φ t-tg (Φ t- Ψ)]+SIDz [tg (Φ t+ ψ)-tg Φ t)],
Wherein, FOV is longitudinal maximum effective dimensions of detector, is determined that when digital radiography is established, is
Given data；SIDz is the focus of the bulb of digital radiography to the vertical range of detector；Φ t are digital X-rays
The deflection angle of the bulb of camera chain；Ψ is the beam-defining clipper of manual beam-defining clipper corresponding with longitudinal maximum effective dimensions of detector
Be open half-angle.
The bulb of acquisition digital radiography corresponding with longitudinal maximum effective dimensions of detector is launched
X-ray visual field projection centre and the specific method of the eccentricity of bulb focus projection are on the detector：
Wherein, SIDz is the focus of the bulb of digital radiography to the vertical range of detector；Φ t are digital X
The deflection angle of the bulb of radiographic systems；Ψ is the limit of manual beam-defining clipper corresponding with longitudinal maximum effective dimensions of detector
Beam device opening half-angle；E is that the bulb of digital radiography corresponding with longitudinal maximum effective dimensions of detector is launched
X-ray visual field projection centre and bulb focus projection on the detector eccentricity.
It is described to obtain to make the ray that the bulb of digital radiography is launched fall into effective detection of detector
In range detector carry out in a longitudinal direction move required movement value specific method be：
Xd=Xt+SIDz·tgΦt-X1-e；
Wherein, XtIt is the lengthwise position of the bulb focus of the bulb of digital radiography；SIDz is digital X-ray
Vertical range of the focus of the bulb of camera chain to detector；Φ t are the deflection angles of the bulb of digital radiography；
X1It is the lengthwise position at the preceding detector center of detector movement of digital radiography；E is longitudinal maximum with detector
The X-ray that the bulb of the corresponding digital radiography of effective dimensions is launched visual field projection centre and ball on the detector
The eccentricity of pipe focus projection；XdIt is in order to which the ray for making the bulb of digital radiography launch falls into detector
Detector carries out mobile required movement value in a longitudinal direction in effective scope of detection.XdThe detection that moves right is indicated for timing
Device, XdIt indicates to be moved to the left detector when being negative.
Claims (5)
1. a kind of method of the ray automatic tracing imaging of digital radiography, which is characterized in that include the following steps：
S01, digital radiography obtain the focus of the bulb of digital radiography to the vertical range of detector
With the deflection angle of the bulb of digital radiography；
S02 obtains the beam-defining clipper opening half-angle of manual beam-defining clipper corresponding with longitudinal maximum effective dimensions of detector；
S03 obtains the X that the bulb of digital radiography corresponding with longitudinal maximum effective dimensions of detector is launched
The eccentricity of ray visual field projection centre and bulb focus projection on the detector；
S04, digital radiography obtain the lengthwise position sum number of the bulb focus of the bulb of digital radiography
The lengthwise position at detector center before the detector movement of word X-ray shooting system；
S05 obtains to make the ray that the bulb of digital radiography is launched fall into the effective scope of detection of detector
Interior detector carries out mobile required movement value in a longitudinal direction；
S06, the ray that digital radiography makes the bulb of digital radiography launch according to acquisition
It falls into detector in the effective scope of detection of detector and carries out mobile required movement value in a longitudinal direction, mobile number X is penetrated
The detector of line camera chain is to corresponding position.
2. the method for the ray automatic tracing imaging of digital radiography as described in claim 1, which is characterized in that
The specific method of the beam-defining clipper opening half-angle of the acquisition manual beam-defining clipper corresponding with longitudinal maximum effective dimensions of detector
For：
FOV=SIDz [tg Φ t-tg (Φ t- Ψ)]+SIDz [tg (Φ t+ Ψ)-tg Φ t],
Wherein, FOV is longitudinal maximum effective dimensions of detector；SIDz is that the focus of the bulb of digital radiography arrives
The vertical range of detector；Φ t are the deflection angles of the bulb of digital radiography；Ψ is longitudinal maximum with detector
The beam-defining clipper opening half-angle of the corresponding manual beam-defining clipper of effective dimensions.
3. the method for the ray automatic tracing imaging of digital radiography as claimed in claim 2, which is characterized in that
The X-ray that the bulb of acquisition digital radiography corresponding with longitudinal maximum effective dimensions of detector is launched
Visual field projection centre and the specific method of the eccentricity of bulb focus projection are on the detector：
Wherein, e is the X that launches of bulb of digital radiography corresponding with longitudinal maximum effective dimensions of detector
The eccentricity of ray visual field projection centre and bulb focus projection on the detector.
4. the method for the ray automatic tracing imaging of digital radiography as claimed in claim 3, which is characterized in that
The acquisition is visited to make the ray that the bulb of digital radiography is launched fall into the effective scope of detection of detector
Survey device carry out in a longitudinal direction move required movement value specific method be：
Xd=Xt+SIDz·tgΦt-X1-e；
Wherein, XtIt is the lengthwise position of the bulb focus of the bulb of digital radiography；X1It is digital radiography
Detector movement before detector center lengthwise position；XdIt is to make the bulb of digital radiography launch
Ray falls into detector in the effective scope of detection of detector and carries out mobile required movement value in a longitudinal direction.
5. the method for the ray automatic tracing imaging of digital radiography as claimed in claim 4, which is characterized in that
It is described in order to make the ray that the bulb of digital radiography is launched fall into detector in the effective scope of detection of detector
Mobile required movement value X is carried out in a longitudinal directiondIt moves right for timing expression, it is described in order to make digital X-ray photograph
The ray that the bulb of system is launched falls into detector in the effective scope of detection of detector and is moved institute in a longitudinal direction
The movement value X neededdIt indicates to be moved to the left when being negative.
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| CN108742669B (en) * | 2018-06-29 | 2020-08-18 | 上海联影医疗科技有限公司 | Horizontal position imaging correction method of X-ray machine and X-ray machine |
| CN113491528B (en) * | 2021-08-20 | 2023-10-03 | 徐风忠 | Automatic tracking and centering device for X-ray detector and bulb tube |
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| US3643095A (en) * | 1969-11-28 | 1972-02-15 | Picker Corp | Automatic collimator control for x-ray apparatus |
| US3863073A (en) * | 1973-04-26 | 1975-01-28 | Machlett Lab Inc | Automatic system for precise collimation of radiation |
| DE2744139A1 (en) * | 1977-09-30 | 1979-04-12 | Siemens Ag | X-RAY EXAMINER |
| US6260999B1 (en) * | 1999-07-26 | 2001-07-17 | Siemens Medical Systems, Inc. | Isocenter localization using electronic portal imaging |
| US7724873B2 (en) * | 2006-10-02 | 2010-05-25 | Kabushiki Kaisha Toshiba | X-ray diagnostic apparatus and X-ray diagnostic system |
| EP2577608B1 (en) * | 2010-05-27 | 2014-07-16 | Koninklijke Philips N.V. | Improved reconstruction for cone-beam computed tomography imaging with off-center flat panel detector |
| US9349494B2 (en) * | 2012-03-07 | 2016-05-24 | Koninklijke Philips N.V. | X-ray beam shaper |
| CN102783960A (en) * | 2012-08-24 | 2012-11-21 | 北京东方惠尔图像技术有限公司 | Beam limitation adjusting device and beam limitation adjusting method of rays and imaging device |
| CN103961123B (en) * | 2013-01-31 | 2018-11-06 | Ge医疗系统环球技术有限公司 | Computer tomography（CT）Method and CT system |
| CN104434148B (en) * | 2013-09-12 | 2019-01-08 | 上海联影医疗科技有限公司 | A kind of control method of X-ray shooting system |
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Application publication date: 20170531 Assignee: Chengdu genbo Radar Technology Co.,Ltd. Assignor: CHENGDU University OF INFORMATION TECHNOLOGY Contract record no.: X2023980052204 Denomination of invention: A method for automatic ray tracing imaging in digital X-ray photography systems Granted publication date: 20180720 License type: Common License Record date: 20231215 |