CN107550503A - The noise-reduction method and CT system of a kind of CT system - Google Patents
The noise-reduction method and CT system of a kind of CT system Download PDFInfo
- Publication number
- CN107550503A CN107550503A CN201610502503.8A CN201610502503A CN107550503A CN 107550503 A CN107550503 A CN 107550503A CN 201610502503 A CN201610502503 A CN 201610502503A CN 107550503 A CN107550503 A CN 107550503A
- Authority
- CN
- China
- Prior art keywords
- noise
- rotor
- rotating speed
- radiator fan
- machine frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The present invention proposes a kind of CT system noise-reduction method, and the CT system includes frame, and the frame has the rotor that can be rotated about the axis, and the radiator fan for machine frame inside radiating；It the described method comprises the following steps：It is determined that and control the rotating speed of the rotor；When carrying out CT scan, the rotating speed of the radiator fan is adjusted, is controlled in the overall noise for causing the noise caused by the radiator fan and the noise caused by the rotor to be formed by stacking in certain limit.The method of the present invention determines the rotating speed of the radiator fan by the rotating speed according to the rotor or according to the noise of the machine frame inside, the rotating speed of the radiator fan is reduced when the rotor speed is higher, the rotating speed of the radiator fan is improved when rotor speed reduces, mutually compensate for the noise as caused by the rotor and the noise as caused by the radiator fan, maximum noise of the CT system in whole scanning process can be effectively reduced, improves the comfort level of person under inspection.In addition, the invention also provides a kind of CT system.
Description
【Technical field】
The present invention relates to computer tomography (Computed Tomography, CT) technical field, especially
It is related to a kind of noise-reduction method of CT system and CT system.
【Background technology】
CT (Computed Tomography, computer tomography) is to the specific of human body with X ray
Position is scanned by certain thickness aspect, due to different tissues to the absorbability of X ray not
Together, the image of fault plane can be reconstructed with computer.
CT system includes frame, and having in the frame can be around the rotor that frame axis rotates, the rotor
It is upper that there is the x-ray source and X-ray detector being oppositely arranged, because x-ray source can be sent greatly at work
The heat of amount, therefore also needed in frame provided with the radiator fan for radiating.
When CT system works, in order to ensure the comfort level of person under inspection, make person under inspection relatively quiet at one
Environment in receive CT scan, it is therefore desirable to control the overall noise of CT system.And rotor and radiator fan
It is two big sources of CT system noise.
Prior art is with caused by noise caused by the work of CT system gantry rotor and radiator fan work
Noise is separate, and is finally overlapped mutually the overall noise for constituting CT system.Due to entirely scanning
During, rotor can be in rotation and static two states, and also can be according to scanning when rotor rotates
Demand is in different rotating speeds, and noise is smaller when so will result in stationary rotor state or when rotating speed is smaller,
And noise is larger during rotation status, and radiator fan is generally in the shape at the uniform velocity rotated in whole scanning process
State, then the CT complete machines that noise caused by noise caused by working rotor and radiator fan work is formed by stacking
Noise can increase with the increase of rotor speed, so that CT system is whole when rotor rotates at a high speed
Bulk noise is larger, influences the experience of person under inspection.
It is, therefore, desirable to provide a kind of noise-reduction method of CT system, can reduce entirety during CT system work
Maximum noise.
【The content of the invention】
The problem of what the present invention solved is overall noise when reducing CT system work.
To solve the above problems, the present invention proposes a kind of CT system noise-reduction method, the CT system includes
Frame, the frame have the rotor that can be rotated about the axis, and the radiator fan for machine frame inside radiating；
It the described method comprises the following steps：
It is determined that and control the rotating speed of the rotor；
When carrying out CT scan, the rotating speed of the radiator fan is adjusted, to be drawn by the radiator fan
The noise risen is controlled in certain limit with the overall noise that the noise caused by the rotor is formed by stacking.
Alternatively, according to the adjustment of rotational speed of the rotor radiator fan rotating speed.
Alternatively, when the rotor speed raises, the rotating speed of the radiator fan is reduced；In the rotor
When rotating speed reduces, the rotating speed of the radiator fan is raised.
Alternatively, the rotating speed of the rotor is adjusted according to the noise decibel of the machine frame inside.
Alternatively, when the noise decibel reduces, the rotating speed of the radiator fan 1 is raised；Made an uproar described
When sound decibel raises, the rotating speed of the radiator fan 1 is reduced.
Alternatively, the machine frame inside is provided with noise transducer, by described in noise transducer acquisition
The noise of machine frame inside.
The invention also provides a kind of CT system, including frame, the frame has what can be rotated about the axis
Rotor, and the radiator fan for machine frame inside radiating；
Also include processing unit, for determining the rotating speed of the rotor, be additionally operable to determine the radiator fan
Rotating speed, to cause as with so that the noise as caused by the radiator fan is folded with the noise as caused by the rotor
The overall noise added is controlled in certain limit；
Control unit, for controlling the rotating speed of the rotor and radiator fan.
Alternatively, the processing unit is used for the rotating speed that the radiator fan is determined according to the rotating speed of the rotor.
Alternatively, the processing unit is used for the rotating speed that the rotor is determined according to the noise of the machine frame inside.
Alternatively, in addition to the noise transducer of the machine frame inside is arranged at, the noise transducer is used for
Obtain the noise of machine frame inside.
Present invention contrast prior art has following beneficial effect：
By in CT scan, adjusting the rotating speed of the radiator fan, to cause as caused by the rotor
Noise compensates mutually with the noise as caused by the rotor, on the premise of machine frame inside cooling requirements are met,
Maximum noise of the CT system in whole scanning process is effectively reduced, makes noise level than more consistent,
Improve the comfort level of person under inspection.
【Brief description of the drawings】
Fig. 1 is a kind of structure chart of CT system of the present invention；
Fig. 2 is a kind of internal structure schematic diagram of CT system frame of the present invention；
Fig. 3 is the flow chart of the CT system noise-reduction method of one embodiment of the invention；
Fig. 4 is the structured flowchart of the CT system of one embodiment of the invention；
Fig. 5 is that the CT system overall noise using the method for the present invention and the CT system using prior art are whole
The comparison diagram of bulk noise.
【Embodiment】
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is right below in conjunction with the accompanying drawings
The embodiment of the present invention is described in detail.
Fig. 1 is a kind of structural representation of computed tomograph scanner system, and reference picture 1, computerized tomography is swept
Retouching system 100 includes frame 110, and frame 110 has the rotor 130 around system axis rotation.It is described
Rotor 130 has the x-ray system of the x-ray source 131 being oppositely arranged and X-ray detector 132.Also
With examination couch 120, when being checked, person under inspection can be along Z-direction on the examination couch 120
It is pushed into scanning cavity 133.X-ray source 131 is rotated about the z axis, and detector 132 is penetrated relative to X
Line source 131 moves together, and with acquired projections measurement data, these data are being used for reconstruction image afterwards.
Helical scanning can also be carried out, during helical scanning, is moved and X along the continuous of Z axis by person under inspection
Rotated while radiographic source 131, x-ray source 131 produces helical trajectory relative to person under inspection.High pressure occurs
Unit 134 is connected with x-ray source 131, to provide power supply.Physiological signal monitoring unit 141 is used to monitor
The physiological signal of person under inspection is scanned, such as：Electrocardiosignal or breath signal.Processing unit 142 connects X and penetrated
Line detector 132 is to obtain the projection measurements of person under inspection, for subsequent treatment, such as：Image reconstruction and
Processing.Control unit 140 connects high-voltage generating unit 134 to control the scanning process of x-ray source 131.
Console and display 143 are being presented interface, data and image to user.Control unit 140 also connects
Processing unit 142 and console and display 143 are connect to control the running of the part.
Fig. 2 is a kind of internal structure schematic diagram of the frame of CT system of the present invention, and reference picture 2 is described
Frame 110 has the rotor 130 that can surround system axis (Z axis) rotation and the fixation for being fixed on ground
Support component 2, the rotor 130 have the x-ray source 131 and X-ray detector 132 being oppositely arranged.
When CT system works, under the drive of rotor 130, the x-ray source 131 rotates about the axis, and visits
Device 132 is surveyed to move together relative to x-ray source 131.Because x-ray source 131 can produce greatly at work
The heat of amount, therefore the radiation air to be radiated for machine frame inside is provided with the part of frame 110 of CT system
Fan 1, the quantity of the radiator fan 1 can be several, and several described radiator fans 1 are arranged at machine
The top of frame 110, and air outlet is provided with (in figure in the appropriate section of the shell of frame 110 (cover)
It is not shown).
Fig. 3 is the flow chart of the noise-reduction method of the CT system of one embodiment of the invention, reference picture 3, this reality
The CT system noise-reduction method for applying example comprises the following steps：
Step S301 is performed, it is determined that and controlling the rotating speed of the rotor.
The rotating speed of the rotor 130 can determine before CT scan is carried out by scan protocols, the scan protocols
It can be inputted by user by console and display 143, the scan protocols are made up of some sweep parameters.
According to the difference of the sweep parameters such as scanned position, sweep speed, scan type, the rotating speed of the rotor 130
Also it is different.
Further, the rotating speed of the rotor 130 can be controlled by the control unit 140 in Fig. 1.
It is possible to further determine the rotating speed of the rotor 130 by the processing unit 143 in Fig. 1.
Step S302 is performed, during CT scan, adjusts the rotating speed of the radiator fan, is carrying out CT
During scanning, adjust the rotating speed of the radiator fan, with cause the noise as caused by the radiator fan with by institute
The overall noise that noise caused by rotor is formed by stacking is stated to be controlled in certain limit.
For the radiator fan 1 or rotor 130 of solid shape, rotating speed is bigger, and heat dissipation capacity is bigger, but
It is simultaneously also bigger as the noise caused by radiator fan 1.
It is possible to further determine the rotating speed of the radiator fan 1 by the processing unit 143 in Fig. 1.
In one embodiment of the invention, the rotating speed of the radiator fan 1 directly can turn according to described
The adjustment of rotational speed of son 130.
Further, when the rotor speed raises, the rotating speed of the radiator fan is reduced；At described turn
When rotor speed reduces, the rotating speed of the radiator fan is raised..
Alternatively, the method for the present embodiment can be before CT scan be carried out, according to the rotor 130 having determined
Rotating speed be to determine the rotating speed of the radiator fan 1；Can also be according to the rotor 130 measured in CT scan
Rotating speed, adjust the rotating speed of the radiator fan 1 in real time.
Alternatively, the rotating speed of the rotor 130 can pass through the processing unit 143 inside the CT system
Deng acquisition, externally measured method (such as being installed on the rotational speed meters of the annex of rotor 130) can also be passed through
Obtain.
Alternatively, for the CT system of the present embodiment, the minimum 0rpm of rotating speed of the rotor 130 (turn/
It is per minute), highest can be 200rpm；The minimum 1000rpm of rotating speed of the radiator fan 1, highest
For 2500rpm.
In the present embodiment, the rotating speed of the rotor 130 sets four gears, respectively 0rpm, 120rpm altogether,
170rpm and 200rpm；The rotating speed of the radiator fan 1 is also provided with four gears, respectively 1000rpm, 1500rpm,
2000rpm and 2500rpm.When the rotating speed of the rotor 130 is 0rpm, the radiator fan 1 is adjusted
Rotating speed be 2500rpm；When the rotating speed of the rotor 130 is 120rpm, the radiator fan 1 is adjusted
Rotating speed be 2000rpm；When the rotating speed of the rotor 130 is 170rpm, the radiator fan 1 is adjusted
Rotating speed be 1500rpm；When the rotating speed of the rotor 130 is 200rpm, the radiator fan 1 is adjusted
Rotating speed be 1000rpm., can will be by the radiation air using above-mentioned corresponding relation according to experimental data
Noise caused by fan is controlled in certain limit with the overall noise that the noise caused by the rotor is formed by stacking
It is interior, the overall maximum noise of CT system can be effectively reduced, while disclosure satisfy that the radiating of machine frame inside will
Ask.
The present invention some other embodiment in, described turn from 130 and radiator fan 1 can also be nothing
Level speed change.
The overall noise of CT system is mainly made up of the noise of rotor 130 and the noise of radiator fan 1,
And the noise of rotor 130 or radiator fan 1 is directly proportional to its rotating speed, i.e. rotor 130 or radiator fan 1
Rotating speed is higher, and the noise being induced by it is bigger.Present embodiment determines institute according to the rotating speed of the rotor 130
The rotating speed of radiator fan 1 is stated, substantially the noise according to caused by the rotor 130 determines described dissipate indirectly
Noise caused by Hot-air fan 1, the overall maximum noise of CT system is reduced by the method for noise compensation, together
When and can ensure CT system cooling requirements.
In another embodiment of the invention, the rotating speed of the radiator fan 1 can also be according to the machine
Noise decibel inside frame 110 is determined.
Preferably, the rotating speed of the radiator fan 1 is inversely proportional with the noise decibel.
In the present embodiment, the noise decibel inside the frame 110 can be by being installed on the frame 110
Internal noise transducer (not shown) measures.
Alternatively, the noise transducer is mountable on the inner surface of the housing of the frame 110, also may be used
To be installed on the rotor 130.
Alternatively, the quantity of the noise transducer can be several, and several described noise transducers can
With along the circumference of the housing or rotor 130 to being uniformly distributed, according to measured by some noise transducers
Noise decibel calculate average value as the noise decibel inside the frame 110.
The method of the present embodiment, can when carrying out CT scan according to the noise decibel of the frame 110 measured,
The rotating speed of the radiator fan 1 is adjusted in real time, when the noise decibel reduces, raises the radiator fan
1 rotating speed；When the noise decibel raises, the rotating speed of the radiator fan 1 is reduced, so that CT
The overall noise control of system within the specific limits, and meets the cooling requirements inside frame 110.
Alternatively, the rotating speed of the radiator fan 1 can be controlled by the control unit 140 in Fig. 1.
It is the embodiment of CT system provided by the invention, the embodiment and above-mentioned CT system noise-reduction method below
Embodiment belong to same design, the detail content of not detailed description, is referred in the embodiment of CT system
The embodiment of above-mentioned CT system noise-reduction method.
As shown in figure 4, the CT system 400 of one embodiment of the invention includes frame 110, the frame 110
With the rotor 130 that can be rotated about the axis, and the radiator fan 1 for the internal heat dissipating of frame 110.
The CT system 100 also includes processing unit 142, for determining the rotating speed of the rotor 130；
The processing unit 142 is additionally operable to determine the rotating speed of the radiator fan 1, to cause by the radiator fan
Noise caused by 1 is controlled in necessarily with the overall noise that the noise caused by the rotor 130 is formed by stacking
In the range of.
The CT system 100 also includes control unit 140, for controlling the rotor 130 and radiation air
The rotating speed of fan 1.
Alternatively, the processing unit 142 is used to determine the radiation air according to the rotating speed of the rotor 130
The rotating speed of fan 1.
Alternatively, the processing unit 142 is used to turn according to determining the noise inside the frame 110
The rotating speed of son 130.
Alternatively, in addition to the noise transducer that is arranged inside the frame 110, the noise transducer
For obtaining the noise of machine frame inside.
Fig. 5 is the CT system overall noise of the method using the present invention and existing CT system overall noise
Comparison diagram.In Figure 5, square dot gray line represents the overall noise of existing CT system；Diamond spot black line
Represent the overall noise of the CT system of the method using the present invention.As shown in figure 5, using prior art,
During whole CT scan, the rotating speed of radiator fan 1 keeps 2000rpm constant, and turn of rotor 130
Speed changes 0 between 200rpm, and CT system overall noise maximum has exceeded 70 decibels.And use this
The method of invention, the rotating speed of radiator fan 1 with rotor 130 rotation speed change, when the rotating speed liter of rotor 130
Gao Shi, the rotating speed of the radiator fan 1 reduce, to reduce the maximum overall noise of CT system；Work as rotor
130 rotating speed reduces, the rotating speed rise of the radiator fan 1, to meet the cooling requirements of machine frame inside.
Using the method for the present invention, the overall noise of CT system is no more than 69 decibels.Fig. 5 shows the side of the present invention
Method can effectively reduce the maximum overall noise of the CT system, and quiet inspection environment is provided for person under inspection,
Improve Consumer's Experience.
More than, only illustrate by way of example and CT system provided by the present invention, art technology can be used
Personnel should be appreciated that such as using the C-arm system equipment of X ray, or combined type medical image system (example
Such as：Combined type positron emission tomography-computer tomography, Positron Emission
Tomography-Computed Tomography, PET-CT), or the CT system using other type rays
Deng, applicable CT system noise-reduction method of the present invention and device, type of the present invention to CT system
With structure and being not specifically limited.
In the present invention, each embodiment uses laddering literary style, emphasis description and the difference of previous embodiment,
The same section of same procedure or structure with reference to the foregoing embodiments in each embodiment.
Although the present invention disclosed as above with preferred embodiment, its be not for limiting the present invention, it is any
Those skilled in the art without departing from the spirit and scope of the present invention, the method that may be by the disclosure above
Possible variation and modification are made to technical solution of the present invention with technology contents, it is therefore, every without departing from this hair
The content of bright technical scheme, any simple modification made according to technical spirit of the invention to above example,
Equivalent variations and modification, belong to the protection domain of technical solution of the present invention.
Claims (10)
1. a kind of CT system noise-reduction method, it is characterised in that the CT system includes frame, described
Frame has the rotor that can be rotated about the axis, and the radiator fan for machine frame inside radiating；
It the described method comprises the following steps：
It is determined that and control the rotating speed of the rotor；
When carrying out CT scan, the rotating speed of the radiator fan is adjusted, to cause by the radiation air
Noise caused by fan is controlled with the overall noise that the noise caused by the rotor is formed by stacking
Within the specific limits.
2. CT system noise-reduction method as claimed in claim 1, it is characterised in that according to the rotor
Adjustment of rotational speed described in radiator fan rotating speed.
3. CT system noise-reduction method as claimed in claim 2, it is characterised in that turn in the rotor
During speed rise, the rotating speed of the radiator fan is reduced；When the rotor speed reduces, rise
The rotating speed of the high radiator fan.
4. CT system noise-reduction method as claimed in claim 1, it is characterised in that according to the frame
Internal noise decibel adjusts the rotating speed of the rotor.
5. CT system noise-reduction method as claimed in claim 4, it is characterised in that in the noise point
When shellfish reduces, the rotating speed of the radiator fan 1 is raised；When the noise decibel raises,
Reduce the rotating speed of the radiator fan 1.
6. CT system noise-reduction method as claimed in claim 4, it is characterised in that the machine frame inside
Noise transducer is provided with, the noise of the machine frame inside is obtained by the noise transducer.
7. a kind of CT system, it is characterised in that including frame, the frame has and can rotated about the axis
Rotor, and for machine frame inside radiating radiator fan；
Also include processing unit, for determining the rotating speed of the rotor, be additionally operable to determine the radiating
The rotating speed of fan, with cause as with cause the noise as caused by the radiator fan with by described
The overall noise that noise caused by rotor is formed by stacking is controlled in certain limit；
Control unit, for controlling the rotating speed of the rotor and radiator fan.
8. CT system as claimed in claim 7, it is characterised in that the processing unit is used for basis
The rotating speed of the rotor determines the rotating speed of the radiator fan.
9. CT system as claimed in claim 7, it is characterised in that the processing unit is used for basis
The noise of the machine frame inside determines the rotating speed of the rotor.
10. CT system as claimed in claim 9, it is characterised in that also described including being arranged at
The noise transducer of machine frame inside, the noise transducer are used for the noise for obtaining machine frame inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610502503.8A CN107550503A (en) | 2016-06-30 | 2016-06-30 | The noise-reduction method and CT system of a kind of CT system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610502503.8A CN107550503A (en) | 2016-06-30 | 2016-06-30 | The noise-reduction method and CT system of a kind of CT system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107550503A true CN107550503A (en) | 2018-01-09 |
Family
ID=60969354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610502503.8A Pending CN107550503A (en) | 2016-06-30 | 2016-06-30 | The noise-reduction method and CT system of a kind of CT system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107550503A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331857A (en) * | 2021-05-27 | 2021-09-03 | 东软医疗系统股份有限公司 | Medical imaging equipment and heat dissipation control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003144425A (en) * | 2001-11-13 | 2003-05-20 | Shimadzu Corp | X-ray ct device |
| US20050287008A1 (en) * | 2004-06-25 | 2005-12-29 | General Electric Company | Method and system for a variable speed fan control for thermal management |
| US20060109956A1 (en) * | 2004-11-24 | 2006-05-25 | General Electric Company | Methods and apparatus for CT system thermal control architecture |
| CN103120591A (en) * | 2011-11-17 | 2013-05-29 | 通用电气公司 | System and method for acoustic noise mitigation in a computed tomography scanner |
-
2016
- 2016-06-30 CN CN201610502503.8A patent/CN107550503A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003144425A (en) * | 2001-11-13 | 2003-05-20 | Shimadzu Corp | X-ray ct device |
| US20050287008A1 (en) * | 2004-06-25 | 2005-12-29 | General Electric Company | Method and system for a variable speed fan control for thermal management |
| US20060109956A1 (en) * | 2004-11-24 | 2006-05-25 | General Electric Company | Methods and apparatus for CT system thermal control architecture |
| CN103120591A (en) * | 2011-11-17 | 2013-05-29 | 通用电气公司 | System and method for acoustic noise mitigation in a computed tomography scanner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331857A (en) * | 2021-05-27 | 2021-09-03 | 东软医疗系统股份有限公司 | Medical imaging equipment and heat dissipation control method thereof |
| CN113331857B (en) * | 2021-05-27 | 2023-08-29 | 东软医疗系统股份有限公司 | Medical imaging equipment and heat dissipation control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8483363B2 (en) | Movable wedge for improved image quality in 3D X-ray imaging | |
| US9380984B2 (en) | Computer tomography imaging device and method | |
| EP2727535B1 (en) | Radiation imaging apparatus and control method thereof | |
| EP2512345B1 (en) | Computed tomography apparatus | |
| CN1781452A (en) | Angiographic x-ray diagnostic device for rotation angiography | |
| EP1560519A2 (en) | Apparatus and method for cone beam volume computed tomography breast imaging | |
| JP6293713B2 (en) | Image processing apparatus, radiation tomography apparatus and program | |
| US10251612B2 (en) | Method and system for automatic tube current modulation | |
| EP2862517B1 (en) | Computed tomography apparatus and method of controlling x-ray by using the same | |
| JP4729519B2 (en) | Radiation imaging method and system with organ-based radiation profile settings | |
| KR20040091563A (en) | Radiation computed tomography apparatus and tomographic image producing method | |
| CN108451537A (en) | Variable SID imagings | |
| JP5985836B2 (en) | Method for reducing the amount of radiation emitted by an imaging system | |
| JP6945410B2 (en) | Image reconstruction processing device, X-ray computer tomographic imaging device and image reconstruction processing method | |
| JP2004057828A (en) | Method for restricting radiation exposure | |
| WO2006090321A1 (en) | Determination of the coverage of a ct scan | |
| CN106918426B (en) | A kind of CT system and its rack dynamic balancing measurement method of adjustment | |
| US8630474B2 (en) | Back-projection of a projection image data set with depth-dependent filtering | |
| CN107550503A (en) | The noise-reduction method and CT system of a kind of CT system | |
| CN107303184A (en) | CT scan x-ray source tube current modulator approach and computed tomographic apparatus | |
| US11972510B2 (en) | Method for generating tomographic image and X-ray imaging apparatus according to same | |
| US10492751B2 (en) | Method and apparatus for modulating x-ray tube current in computed tomography | |
| JP2013027520A (en) | Method and device for generating image, program, and x-ray ct apparatus | |
| JP5300880B2 (en) | Medical diagnostic imaging equipment | |
| Jaffray et al. | Volumetric cone-beam CT system based on a 41x41 cm2 flat-panel imager |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 201807 Shanghai city Jiading District Industrial Zone Jiading Road No. 2258 Applicant after: Shanghai Lianying Medical Technology Co.,Ltd. Address before: 201807 Shanghai city Jiading District Industrial Zone Jiading Road No. 2258 Applicant before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180109 |
|
| RJ01 | Rejection of invention patent application after publication |