CN109738465A - A kind of CT detection device and system - Google Patents
A kind of CT detection device and system Download PDFInfo
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- CN109738465A CN109738465A CN201910172376.3A CN201910172376A CN109738465A CN 109738465 A CN109738465 A CN 109738465A CN 201910172376 A CN201910172376 A CN 201910172376A CN 109738465 A CN109738465 A CN 109738465A
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Abstract
The invention discloses a kind of CT detection device and systems, wherein the device includes radiographic source, rotating disk and CT detector；Wherein, CT detector includes N number of detecting plate；Radiographic source is set to one end of rotating disk；N number of detecting plate is set to the other end of rotating disk, and the line of the ray source focus of the imaging region center point and radiographic source of each detecting plate is perpendicular to the outer surface where the imaging region center point of each detecting plate；Wherein, on the basis of central detector plate, remaining detecting plate is symmetrical along the imaging region center point of central detector plate and the line of ray source focus.The present invention the problem of realization based on the full utilization of helical scanning T-FDK algorithm (abbreviation ST-FDK here) data, and realizes device miniaturization problem from the point of view of algorithm for reconstructing.
Description
Technical field
The invention belongs to safety check technical field more particularly to a kind of CT detection devices and system.
Background technique
In the explosives detection technology based on X-ray, X ray computer Tomography technology (referred to as " CT skill
Art ") because of its own distinctive advantage, paid much attention in security inspection field.Federal Aviation management board (FAA,
Federal Aviation Administration) unique authentication EDS (Explosive Detection System) type peace
Examining equipment is exactly CT equipment, it is seen that x-ray ct technology is in the status of security inspection field.
X ray CT safety check technology is led to by being rebuild to obtain the faultage image of scanned object to CT data for projection
It crosses and the characteristic in faultage image is analyzed, realize the identification to dangerous goods in scanned object.
In traditional CT equipment, the distribution of detector assembly is as shown in Figure 1,1 be wherein radiographic source, 2 be support ray
The rotatable disk in source and detector, 3 be detector.Its main feature is that: detector continuous arrangement is distributed in and is with radiographic source target spot
In the same standard circumference in the center of circle, so that the X-ray beam dosage range that detector parts receive within the same time is close, this
Sample can reduce subsequent algorithm processing workload, while in same faultage image center and peripheral spatial resolution phase
Closely, the standard reconstruction algorithm of standard arc detector can in addition be used.But the size of such layout type equipment is with respect to meeting
It is bigger, cause occupied area more much larger than conventional screening machine, this is that limitation X ray CT rays safety detection apparatus is largely answered in field of safety check
One of key factor, particularly with the CT equipment for hand-baggage detection, place is more sensitive to equipment size, therefore
The CT equipment of small design very it is necessary to, and minimize key point be CT light path layout design.
Summary of the invention
Technical problem solved by the present invention is a kind of CT detection device and system have been overcome the deficiencies of the prior art and provide,
From the point of view of algorithm for reconstructing, realize based on the full utilization of helical scanning T-FDK algorithm (abbreviation ST-FDK here) data
Problem, and realize device miniaturization problem.
The object of the invention is achieved by the following technical programs: a kind of CT detection device comprising: radiographic source, rotation
Disk and CT detector；Wherein, CT detector includes N number of detecting plate；Radiographic source is set to one end of rotating disk；N number of detecting plate is set
It is placed in the other end of rotating disk, and the line of the ray source focus of the imaging region center point and radiographic source of each detecting plate hangs down
The directly outer surface where the imaging region center point in each detecting plate；Wherein, on the basis of central detector plate, remaining detection
Plate is symmetrical along the imaging region center point of central detector plate and the line of ray source focus.
In above-mentioned CT detection device, the imaging region of the imaging region center point and remaining each detecting plate of central detector plate
The line of central point and the imaging region center point of remaining corresponding each detecting plate are vertical with the line of ray source focus.
In above-mentioned CT detection device, the imaging region center point of central detector plate and the line of ray source focus and left side
The angle γ of the line of the imaging region center point and ray source focus of two detecting plates1It is obtained by following formula:
Wherein, β1For in the imaging region of the line of center detector left margin point and ray source focus and central detector plate
The angle of the line of heart point and ray source focus, L are the width dimensions of detecting plate, the left side detecting plate adjacent with central detector plate
It is defined as second detecting plate in left side.
In above-mentioned CT detection device, the imaging region center point of central detector plate and the line of ray source focus and left side
The angle γ of the line of the imaging region center point and ray source focus of k detecting platekIt is obtained by following formula:
Wherein, βkFor the imaging of the line of left side kth block detector left margin point and ray source focus and central detector plate
The angle of the line of regional center point and ray source focus, k=2,3,4 ...,
In above-mentioned CT detection device, βkAnd βk-1The following formula of relationship:
βk=2* γk-1-βk-1,
Wherein, βk-1For the line of -1 piece of detector left margin point of left side kth and ray source focus and central detector plate at
As the angle of regional center point and the line of ray source focus, γk-1For the imaging region center point and radiographic source of center detecting plate
The angle of the line of the imaging region center point and ray source focus of -1 detecting plate of line and left side kth of focus, k=2,3,
4 ...,
In above-mentioned CT detection device, the radiographic source is CT radiographic source.
A kind of CT system, comprising: any CT detection device as described in claim 1 to 6, conveyer belt, data processing meter
Calculation machine, transmission translator, slip ring motor and motion control computer；Wherein, the CT detection device includes radiographic source, rotating disk
With CT detector；Radiographic source and CT detector are set in rotating disk, and CT detector is connect with data processing computer, conveyer belt
Motor and slip ring motor are connect with motion control computer；Motion control computer controls transmission translator and drives conveyer belt even
Speed movement, motion control computer control slip ring motor uniform rotation；Object to be detected is placed on the belt, and conveyer belt drives
Object to be detected enters sense channel, and rotating disk surrounds conveyer belt uniform rotation；Radiographic source divergent-ray, CT detector, which receives, to be come
From in the ray photons signal of CT radiographic source, the acquisition of CT data for projection, storage and all are completed by data processing computer
Data processing work.
Compared with prior art, the present invention has the following advantages:
The present invention is proposed in addition to based on cramped construction design consideration, the also full utilization based on data for projection and algorithm for reconstructing
Improvement, it is well known that the T-FDK algorithm for reconstructing of circular orbit is understood some rejection of data after data rearrangement and is not had to.And it adopts
The light path layout proposed with invention, when using T-FDK algorithm for reconstructing, the collected data for projection of detector still can be completely sharp
With.The conclusion is equally applicable for helical orbit T-FDK, that is, ST-FDK algorithm for reconstructing.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the schematic diagram of the detector assembly of the prior art；
Fig. 2 is the structural schematic diagram of CT detection device provided in an embodiment of the present invention；
Fig. 3 is the positional diagram of N number of detecting plate and ray source focus provided in an embodiment of the present invention；
Fig. 4 is that fan-beam provided in an embodiment of the present invention resets schematic diagram；
Fig. 5 is that Cone-parallel provided in an embodiment of the present invention resets schematic diagram；
Fig. 6 is the top view provided in an embodiment of the present invention for resetting geometry；
Fig. 7 is the structural schematic diagram of CT system provided in an embodiment of the present invention；
Fig. 8 is another structural schematic diagram of CT detection device provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and
Feature in embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 2 is the structural schematic diagram of CT detection device provided in an embodiment of the present invention；Fig. 3 is provided in an embodiment of the present invention
The positional diagram of N number of detecting plate and ray source focus.As shown in Figures 2 and 3, which includes: radiographic source
1, rotating disk 2 and CT detector 3.
Wherein, CT detector 3 includes N number of detecting plate；Each detecting plate has oneself corresponding imaging region center point
5。
Radiographic source 1 is set to one end of rotating disk 2.Rotating disk 2 includes rotation center 4.
N number of detecting plate is set to the other end of rotating disk 2, and the imaging region center point and radiographic source of each detecting plate
The line of 1 ray source focus 7 is perpendicular to the outer surface where the imaging region center point of each detecting plate；Wherein, with center
On the basis of detecting plate 8, line pair of remaining detecting plate along the imaging region center point and ray source focus 7 of central detector plate 8
Claim distribution.Specifically, N number of detecting plate includes central detector plate 8 and remaining detecting plate, the spy positioned at 8 left side of central detector plate
The number of drafting board isNumber positioned at the detecting plate on the right side of central detector plate 8 is
The line and phase of the imaging region center point of the imaging region center point and remaining each detecting plate of central detector plate 8
The imaging region center point of remaining corresponding each detecting plate is vertical with the line of ray source focus 7.Specifically, as shown in figure 3,
The line of the imaging region center point of the imaging region center point and second piece of detecting plate 9 in left side of central detector plate 8 and left side the
The imaging region center point of two pieces of detecting plates 9 is vertical with the line of ray source focus 7.The imaging region center of central detector plate 8
Point in the line of the imaging region center point of left side third block detecting plate 10 and the imaging region of left side third block detecting plate 10
Heart point is vertical with the line of ray source focus 7.The imaging region center point of central detector plate 8 and left side kth block detecting plate 11
The line of the line of imaging region center point and the imaging region center point of left side kth block detecting plate 11 and ray source focus 7 hangs down
Directly.The line of the imaging region center point of the imaging region center point and second piece of detecting plate 12 in right side of central detector plate 8 and the right side
The imaging region center point of the second piece of detecting plate 12 in side is vertical with the line of ray source focus 7.The imaging region of central detector plate 8
The line of the imaging region center point of central point and right side third block detecting plate 13 and the imaging area of right side third block detecting plate 13
Domain central point is vertical with the line of ray source focus 7.The imaging region center point and right side kth block detecting plate of central detector plate 8
The company of the imaging region center point and ray source focus 7 of the line and right side kth block detecting plate 14 of 14 imaging region center point
Line is vertical.
Distance and the detector panel imaging region center of each detector panel imaging region center point to ray source focus 7
The imaging region center point of the line and central detector plate 8 of point and ray source focus 1 and the line of ray source focus 7 are (i.e. in
The direction of heart beam 6) angle cosine value it is directly proportional.
As shown in figure 3, the line and second, left side of the imaging region center point of central detector plate 8 and ray source focus 7
The angle γ of the line of the imaging region center point and ray source focus 7 of detecting plate 91It is obtained by following formula:
Wherein, β1For the imaging region of the line and central detector plate 8 of center detector left margin point and ray source focus 7
The angle of the line of central point and ray source focus 7, L are the width dimensions of detecting plate, and the left side adjacent with central detector plate 8 is visited
Drafting board is defined as second detecting plate 9 in left side.
The imaging region center point of central detector plate 8 and the line of ray source focus 7 and k-th of left side detecting plate 11 at
As the angle γ of regional center point and the line of ray source focus 7kIt is obtained by following formula:
Wherein, βkFor left side kth block detector left margin point and ray source focus 7 line and central detector plate 8 at
As the angle of regional center point and the line of ray source focus 7, k=2,3,4 ...,
βkAnd βk-1The following formula of relationship:
βk=2* γk-1-βk-1,
Wherein, βk-1For the line of -1 piece of detector left margin point of left side kth and ray source focus 7 and central detector plate 8
The angle of the line of imaging region center point and ray source focus 7, γk-1For the imaging region center point of center detecting plate 8 with penetrate
The angle of the line of the imaging region center point and ray source focus 7 of -1 detecting plate of line and left side kth of source focal spot 7, k
=2,3,4 ...,
Spiral cone-beam tomography is most common scanning mode in current commercial safety check CT, and algorithm for reconstructing is most common
It is still analytic approximation algorithm for reconstructing.More representational algorithm is spiral FDK algorithm and based on FDK algorithm among these
Innovatory algorithm may be collectively referred to as FDK-based algorithm.Under the conditions of circular orbit scan, T-FDK is a classics in FDK algorithm
Innovatory algorithm, T-FDK algorithm steps are to carry out rearrangement of the cone-beam to dip-parallel beam data for projection, following Fig. 4,5 institutes first
Show.On data projection to rotation center dummy detector after rearrangement, such as shape of the same tent.Fig. 6 is to reset geometry
Top view.
It is similar that cone-beam rearrangement process with fan-beam is rearranged to parallel beam, sees Fig. 4,5, rearrangement formulae are as follows:
(θ, t) is the coordinate under parallel beam geometry, and (beta, gamma) is the coordinate under fan-beam and cone-beam geometry.Setting radiographic source,
Detector rotates counterclockwise around object, the projection for fan-beam, and the projection relation for resetting front and back is as follows:
And for cone-beam rearrangement process, rearrangement formulae is as follows:
It can be found that the height of " tent " two sides and the relationship of intermediate altitude are:
Wherein γ is the angle of central beam before parallel beam and the rearrangement after resetting.As described above, after rearrangement
On data projection to the dummy detector of rotation center position, such as shape of the same tent.Using filter back-projection algorithm into
When row is rebuild, filtering direction is horizontal direction, and partial data needs are cast out, and is unfavorable for raising and the figure of reconstructed image quality in this way
As the raising of signal-to-noise ratio, in order to make full use of the data for projection in detection.The light path layout of this patent design detector is not being marked
Above quasi- arc, and each detecting plate imaging region center point is into the distance of ray source focus and the detector panel imaging region
Heart point and ray source focus line are directly proportional to the cosine value of central beam angle.This is this patent mentality of designing place.
Preferably, Fig. 3 is seen, along the side view angle figure of the transmission device direction of motion.If left margin and the center of central detector plate
Beam angle is β1, the left margin of second piece of detecting plate of adjacent left-hand with and the angle of central beam be β2, and so on, it is adjacent
Left side third block detect the left margin of version with and the angle of central beam be β3, adjacent left-hand kth block detect version left margin with
Angle with central ray beam is βk.7 be ray source focus, and 8 be center detecting plate (being about set to first piece of detecting plate here), 9
It is left side third block detecting plate for second piece of left side detecting plate, 10,11 be left side kth block detecting plate, and 12 be the spy of second piece of right side
Drafting board, 13 be right side third block detecting plate, and 14 be right side kth block detecting plate.
Fig. 7 is the structural schematic diagram of CT system provided in an embodiment of the present invention.As shown in fig. 7, the CT system includes that CT is visited
Survey device, conveyer belt 50, data processing computer 90, transmission translator 60, slip ring motor 80 and motion control computer 70.Its
In,
CT detection device includes radiographic source 1, rotating disk 2 and CT detector 3；
Radiographic source 1 and CT detector 3 are set in rotating disk 2, and CT detector 3 is connect with data processing computer 90, are passed
Belt conveying motor 60 and slip ring motor 80 are connect with motion control computer 70；
Motion control computer 70 controls transmission translator 60 and drives conveyer belt uniform motion, and motion control computer 70 is controlled
80 uniform rotation of slip ring motor processed；
Object to be detected 40 is placed on transmission belt 50, and conveyer belt 50 drives object to be detected 40 to enter sense channel, rotation
Turntable 2 surrounds conveyer belt uniform rotation；
1 divergent-ray of radiographic source, CT detector 3 receives the ray photons signal from CT radiographic source 1, by data processing
Acquisition, storage and all data processing works of the completion CT data for projection of computer 90.
The present embodiment proposes that the also full utilization based on data for projection and reconstruction is calculated in addition to considering based on cramped construction design
The improvement of method, it is well known that the T-FDK algorithm for reconstructing of circular orbit, data rearrangement are understood some rejection of data later and do not had to.And
The light path layout proposed using the present embodiment, when using T-FDK algorithm for reconstructing, the collected data for projection of detector still can be with
Full utilization.The conclusion can be generalized to spiral scan reconstruction.
Fig. 8 is another preferred embodiment, and in layout shown in Fig. 8, central beam is located at intermediate two pieces of detecting plates
Centre, in this case, the sum of detecting plate is even number, similarly, each detecting plate imaging region center point to radiographic source
The cosine value of the distance of focus and the detector panel imaging region center point and ray source focus line and central beam angle at
Direct ratio.It will be appreciated by those skilled in the art that this kind is laid out also within the protection scope of this patent.
Embodiment described above is the present invention more preferably specific embodiment, and those skilled in the art is in this hair
The usual variations and alternatives carried out in bright technical proposal scope should be all included within the scope of the present invention.
Claims (7)
1. a kind of CT detection device, characterized by comprising: radiographic source (1), rotating disk (2) and CT detector (3)；Wherein,
CT detector (3) includes N number of detecting plate；
Radiographic source (1) is set to one end of rotating disk (2)；
N number of detecting plate is set to the other end of rotating disk (2), and the imaging region center point and radiographic source of each detecting plate
(1) line of ray source focus (7) is perpendicular to the outer surface where the imaging region center point of each detecting plate；Wherein, with
On the basis of central detector plate (8), imaging region center point and ray source focus of remaining detecting plate along central detector plate (8)
(7) line is symmetrical.
2. CT detection device according to claim 1, it is characterised in that: the imaging region center point of central detector plate (8)
With the imaging region center of the line of the imaging region center of remaining each detecting plate point and remaining corresponding each detecting plate
Point is vertical with the line of ray source focus (7).
3. CT detection device according to claim 1, it is characterised in that: the imaging region center point of central detector plate (8)
With the company of the line of ray source focus (7) and the imaging region center point of second, left side detecting plate (9) and ray source focus (7)
The angle γ of line1It is obtained by following formula:
Wherein, β1For the imaging region of the line and central detector plate (8) of center detector left margin point and ray source focus (7)
The angle of central point and the line of ray source focus (7), L are the width dimensions of detecting plate, an adjacent left side with central detector plate (8)
Side detecting plate is defined as second detecting plate (9) in left side.
4. CT detection device according to claim 1, it is characterised in that: the imaging region center point of central detector plate (8)
With the company of the line of ray source focus (7) and the imaging region center point of k-th of left side detecting plate (11) and ray source focus (7)
The angle γ of linekIt is obtained by following formula:
Wherein, βkFor the imaging of the line and central detector plate (8) of left side kth block detector left margin point and ray source focus (7)
The angle of regional center point and the line of ray source focus (7),
5. CT detection device according to claim 4, it is characterised in that: βkAnd βk-1The following formula of relationship:
βk=2* γk-1-βk-1,
Wherein, βk-1For -1 piece of detector left margin point of left side kth and the line of ray source focus (7) and central detector plate (8)
The angle of imaging region center point and the line of ray source focus (7), γk-1For the imaging region center point of center detecting plate (8)
With the imaging region center point of -1 detecting plate of line and left side kth of ray source focus (7) and the line of ray source focus (7)
Angle,
6. CT detection device according to claim 1, it is characterised in that: the radiographic source (1) is CT radiographic source.
7. a kind of CT system, characterized by comprising: any CT detection device as described in claim 1 to 6, conveyer belt
(50), data processing computer (90), transmission translator (60), slip ring motor (80) and motion control computer (70)；Wherein,
The CT detection device includes radiographic source (1), rotating disk (2) and CT detector (3)；
Radiographic source (1) and CT detector (3) are set on rotating disk (2), and CT detector (3) and data processing computer (90) are even
It connects, transmission translator (60) and slip ring motor (80) are connect with motion control computer (70)；
Motion control computer (70) controls transmission translator (60) and drives conveyer belt uniform motion, motion control computer (70)
Control slip ring motor (80) uniform rotation；
Object to be detected (40) is placed on transmission belt (50), and it is logical that conveyer belt (50) drives object to be detected (40) to enter detection
Road, rotating disk (2) surround conveyer belt uniform rotation；
Radiographic source (1) divergent-ray, CT detector (3) receives the ray photons signal from CT radiographic source (1), by data
Manage acquisition, storage and all data processing works that computer (90) complete CT data for projection.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110865089A (en) * | 2019-12-20 | 2020-03-06 | 北京航星机器制造有限公司 | CT detector and CT detection system |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030147502A1 (en) * | 2001-12-11 | 2003-08-07 | Bjorn Heismann | X-ray imaging apparatus with tube side filter for dividing the x-ray beam into multiple beams of differing intensities |
| CN1643371A (en) * | 2002-03-19 | 2005-07-20 | 分离成像有限责任公司 | Systems and methods for imaging large field-of-view objects |
| US20050169422A1 (en) * | 2002-10-02 | 2005-08-04 | L-3 Communications Security & Detection | Computed tomography system |
| CN1708686A (en) * | 2002-10-02 | 2005-12-14 | 显示成像技术有限公司 | Folded array CT baggage scanner |
| JP2007322384A (en) * | 2006-06-05 | 2007-12-13 | Sony Corp | X-ray tomographic imaging unit and method |
| WO2009115982A1 (en) * | 2008-03-21 | 2009-09-24 | Koninklijke Philips Electronics N.V. | Computed tomography scanner apparatus and method for ct-based image acquisition based on spatially distributed x-ray microsources of the cone-beam type |
| US20140010343A1 (en) * | 2012-07-06 | 2014-01-09 | Samit Kumar Basu | Compact geometry ct system |
| CN103674979A (en) * | 2012-09-19 | 2014-03-26 | 同方威视技术股份有限公司 | CT (computed tomography) luggage safety inspection system and detector device of CT safety inspection system |
| US20140211913A1 (en) * | 2013-01-31 | 2014-07-31 | Ge Medical Systems Global Technology Company, Llc | Advanced collimator aperture curve |
| US20160187503A1 (en) * | 2014-12-30 | 2016-06-30 | Morpho Detection, Llc. | Systems and methods for x-ray ct scanner with reconfigurable field of view |
| US20160313261A1 (en) * | 2013-12-23 | 2016-10-27 | Johnson Matthey Public Limited Company | Scanning method |
| CN107280700A (en) * | 2016-03-31 | 2017-10-24 | 通用电气公司 | CT imaging devices and method, the X-ray transmitting-receiving subassembly for CT imaging devices |
| CN210294115U (en) * | 2019-03-07 | 2020-04-10 | 北京航星机器制造有限公司 | CT detection device and system |
-
2019
- 2019-03-07 CN CN201910172376.3A patent/CN109738465A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030147502A1 (en) * | 2001-12-11 | 2003-08-07 | Bjorn Heismann | X-ray imaging apparatus with tube side filter for dividing the x-ray beam into multiple beams of differing intensities |
| CN1643371A (en) * | 2002-03-19 | 2005-07-20 | 分离成像有限责任公司 | Systems and methods for imaging large field-of-view objects |
| US20050169422A1 (en) * | 2002-10-02 | 2005-08-04 | L-3 Communications Security & Detection | Computed tomography system |
| CN1708686A (en) * | 2002-10-02 | 2005-12-14 | 显示成像技术有限公司 | Folded array CT baggage scanner |
| JP2007322384A (en) * | 2006-06-05 | 2007-12-13 | Sony Corp | X-ray tomographic imaging unit and method |
| WO2009115982A1 (en) * | 2008-03-21 | 2009-09-24 | Koninklijke Philips Electronics N.V. | Computed tomography scanner apparatus and method for ct-based image acquisition based on spatially distributed x-ray microsources of the cone-beam type |
| US20140010343A1 (en) * | 2012-07-06 | 2014-01-09 | Samit Kumar Basu | Compact geometry ct system |
| CN103674979A (en) * | 2012-09-19 | 2014-03-26 | 同方威视技术股份有限公司 | CT (computed tomography) luggage safety inspection system and detector device of CT safety inspection system |
| US20140211913A1 (en) * | 2013-01-31 | 2014-07-31 | Ge Medical Systems Global Technology Company, Llc | Advanced collimator aperture curve |
| US20160313261A1 (en) * | 2013-12-23 | 2016-10-27 | Johnson Matthey Public Limited Company | Scanning method |
| US20160187503A1 (en) * | 2014-12-30 | 2016-06-30 | Morpho Detection, Llc. | Systems and methods for x-ray ct scanner with reconfigurable field of view |
| CN107280700A (en) * | 2016-03-31 | 2017-10-24 | 通用电气公司 | CT imaging devices and method, the X-ray transmitting-receiving subassembly for CT imaging devices |
| CN210294115U (en) * | 2019-03-07 | 2020-04-10 | 北京航星机器制造有限公司 | CT detection device and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110865089A (en) * | 2019-12-20 | 2020-03-06 | 北京航星机器制造有限公司 | CT detector and CT detection system |
| CN110865089B (en) * | 2019-12-20 | 2020-12-25 | 北京航星机器制造有限公司 | CT detector and CT detection system |
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