CN106923850A - The generation method and equipment of a kind of digital subtraction image - Google Patents
The generation method and equipment of a kind of digital subtraction image Download PDFInfo
- Publication number
- CN106923850A CN106923850A CN201710097313.7A CN201710097313A CN106923850A CN 106923850 A CN106923850 A CN 106923850A CN 201710097313 A CN201710097313 A CN 201710097313A CN 106923850 A CN106923850 A CN 106923850A
- Authority
- CN
- China
- Prior art keywords
- image
- filter
- digital
- digital subtraction
- wave
- 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
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000002872 contrast media Substances 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims description 14
- 230000010354 integration Effects 0.000 claims description 7
- 238000009499 grossing Methods 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 description 3
- 208000019155 Radiation injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 241000894007 species Species 0.000 description 2
- HPTJABJPZMULFH-UHFFFAOYSA-N 12-[(Cyclohexylcarbamoyl)amino]dodecanoic acid Chemical compound OC(=O)CCCCCCCCCCCNC(=O)NC1CCCCC1 HPTJABJPZMULFH-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000002583 angiography Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/48—Diagnostic techniques
- A61B6/481—Diagnostic techniques involving the use of contrast agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
- A61B6/5211—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Veterinary Medicine (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Image Processing (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The present invention discloses the generation method and equipment of a kind of digital subtraction image.The method comprising the steps of：To contrast agent is injected in human body, survey meter is exposed to human body, collects original image；By original image importing digital low pass filter, it is smoothed, obtains frisket image；The original image is input into subtracter together with frisket image, carries out subtracting each other treatment, obtain digital subtraction image.The equipment is the equipment for realizing the above method.The present invention utilizes digital processing technology, obtains frisket image, need to only carry out single exposure, and device structure is simple, easy to operate.
Description
Technical field
The invention belongs to medical treatment detection device technical field, more particularly to a kind of digital subtraction image for intervening operation
Generation method and equipment.
Background technology
In clinical intervention surgical application, doctor generally needs to double expose patient body to determine to intervene Surgery
The particular location of position.Its flow shoots for exposure for the first time, obtains the frisket image of body part, injects contrast agent, carries out the
Re-expose shoots, and obtains injecting the image of contrast agent.By the image of angioplerosis contrast agent and frisket image subtraction, blood is obtained
The digital subtraction image (Digital Subtraction Angiography, be abbreviated as DSA) of pipe.This application model is present
Problem have：
1. excessive contrast agent is used.DSA is carried out every time, it is necessary to inject contrast agent to patient, contrast agent is in itself to human body
Health has certain harm, but if contrast agent underfilling in intravascular, just cannot be presented right in DSA result images
Than degree clearly blood vessel.Due to patient tissue and its diversity of pathology, in order to ensure DSA imaging results, during DSA very
The suitable dose of hardly possible control contrast agent.
2. excessive radiant exposure.Carry out DSA every time and respectively obtain frisket picture and the full figure of contrast agent, it is necessary to double expose
Picture, the radiation exposure dose needs that operation is related to reduce to reduce the injury to human body as far as possible, often increase a radiant exposure, all
It is a radiation injury to patient, doctor needs the necessity for considering X-ray exposure, to reduce excessive radiant exposure, reduce
The radiation injury of patient.
3. the motion artifacts for introducing.Carry out DSA every time and respectively obtain frisket picture and the full figure of contrast agent, it is necessary to double expose
Picture, but the breathing of patient, shake can cause the image misalignment that double exposes during double exposure, cause occur motion when shadow is subtracted
Artifact, this motion artifacts reduce picture contrast, cause to reduce the positioning precision of intervention operation.
The content of the invention
It is topic to solve above-mentioned, the invention is intended to proposing a kind of real-time frisket generation method of digital subtraction image and setting
It is standby, using digital processing method, original image is processed using wave digital lowpass filter, frisket image is obtained, it is not required to two
Secondary exposure, device structure is simple, easy to operate.
The present invention provides a kind of generation method for intervening the digital subtraction image of operation, comprises the following steps：
A, to contrast agent is injected in human body, survey meter is exposed to human body, collects original image；
B, by the original image importing digital low pass filter, be smoothed, obtain frisket image；
C, the original image is input into subtracter together with frisket image, carries out subtracting each other treatment, obtain Digital Subtraction figure
Picture.
Using wave digital lowpass filter traditionally, DSA can be caused image blurring unclear.Currently preferred digital lowpass
Wave filter is edge preserving filter.Above-mentioned steps B is：The original image is imported into the edge preserving filter, smooth place is carried out
Reason, obtains frisket image.
Edge preserving filter also has multiple species, and currently preferred edge preserving filter is wave filter.Above-mentioned steps B is
For：The original image is imported into the wave filter, is smoothed, obtain frisket image.
The cut-off frequency of wave filter is controlled by the window size of wave filter.Using above-mentioned wave filter
During treatment original image, the window size of the wave filter is 4~6.
As preferred scheme of the invention, the wave digital lowpass filter and subtracter are embedded in image processor；Profit
With image processor, the step B and step C is realized.
Preferably, when digital subtraction image (DSA images) is obtained using image processor, the wave digital lowpass filter is
During wave filter, wave filter is comprised the following steps to the smoothing processing of original image：
F, the pixel to the original image carry out the accumulative summation of point-by-point integration, generate integrogram, obtain integrogram number
Value, by integrogram numerical value storage to list；
G, the calculating that average and variance are carried out to the integrogram numerical value in the list, obtain value before filtering；
H, to value before the filtering guide filtering calculate, obtain frisket image.
In addition, the present invention provide it is a kind of generate digital subtraction image equipment, including survey meter, subtracter, display and
Operating desk and image processor；
Described image processor includes signal input port and signal outlet, and described image processor is embedded with digital low-pass filtering
Device；
The subtracter is embedded in described image processor, and the signal input port connects the wave digital lowpass filter respectively
And subtracter, the wave digital lowpass filter connection subtracter, the subtracter connection signal outlet；
The survey meter connects the operating desk, and the operating desk connects the signal input port, the signal outlet connection
The display.
Further, the wave digital lowpass filter is edge preserving filter.Further, the edge preserving filter is to draw
Waveguide filter.
Used as preferred embodiments of the present invention, the equipment further includes holder, and the holder connects the operation
Platform.After operating desk reads the digital subtraction image of image processor generation, holder is stored to, in case subsequently using.
Digital subtraction image generation method and equipment that the present invention is provided, Digital Subtraction figure is generated by being not required to re-expose
Picture；Reduce the dose of radiation suffered by patient；Operating time is shortened, so as to reduce the implantation dosage of contrast agent；Use
Device structure it is simple, it is easy to operate；Average and variance are calculated using integrogram method is converted into the process of tabling look-up, so as to shorten
Operation time, guiding filtering is accelerated to calculate.
Brief description of the drawings
Fig. 1 is the flow chart that the method for the present invention generates DSA images；
Fig. 2 is the flow chart that the method for the present invention generates DSA images using wave filter；
Fig. 3 is the schematic diagram of equipment of the invention；
Fig. 4 is the flow chart of the embodiment of the present invention 1；
Fig. 5 is the flow chart of the embodiment of the present invention 2.
Specific embodiment
Below in conjunction with drawings and Examples, specific embodiment of the invention is described in more details, so as to energy
Enough more fully understand the advantage of the solution of the present invention and its various aspects.However, specific embodiments described below and implementation
Example is only descriptive purpose, rather than limitation of the present invention.
As shown in figure 1, the first purpose of the embodiment of the present invention is to provide a kind of digital subtraction image for intervening operation
Generation method, comprise the following steps：
1st, to contrast agent is injected in human body, survey meter is exposed to human body, collects original image；
2nd, by original image importing digital low pass filter, it is smoothed, obtains frisket image；
3rd, original image is input into subtracter together with frisket image, carries out subtracting each other treatment, obtain digital subtraction image
(DSA images).
Wherein, wave digital lowpass filter can be traditional linear filter such as average filter, Gaussian filter.But
It is that linear filter can cause image border excess smoothness while image background is smooth, image border when causing to subtract shadow
Misalignment, it is smudgy so as to cause DSA images contrast at vessel boundary to decline, and then cause to reduce intervention operation
Positioning precision.(this problem of Edge-preserving filter) Ke Xie Decision conventional filters is improved edge preserving filter
The vessel boundary contrast of DSA images, therefore, the preferred edge preserving filter of method of the embodiment of the present invention carries out digital lowpass filter
Ripple, i.e. smoothing processing.
Edge preserving filter is divided into multiple species, such as two-sided filter (Bi-lateral filter), wave filter
(Guided filter), L0 smoothing filters (L0 smoothing) etc., because the requirement of real-time of intervention operation is very high,
The edge preserving filter that amount of calculation must be selected relatively low, therefore, the preferred wave filter of this method carries out digital low-pass filtering.
The cut-off frequency of wave filter is controlled by the window size of wave filter, and window set conference causes meter
Calculation amount increases, it is preferred, therefore, that the window size of wave filter is 4~6.Window size refers to participating in what filtering was calculated
Pixel dimension.
As the preferred scheme of the embodiment of the present invention, wave digital lowpass filter and subtracter are embedded in image processor
(GPU).The treatment of above-mentioned steps 2 and step 3 to original image and frisket image, is carried out on GPU, final to obtain DSA images.
As shown in Fig. 2 digital subtraction image (DSA images) is obtained using image processor, when wave digital lowpass filter is
During wave filter, wave filter is comprised the following steps to the smoothing processing of original image：
4th, the pixel to original image carries out the accumulative summation of point-by-point integration, generates integrogram, obtains integrogram numerical value, will
Integrogram numerical value is stored in list；
5th, the calculating of average and variance is carried out to the integrogram numerical value in list, value before filtering is obtained；
6th, guide filtering to value before filtering to calculate, obtain frisket image.
Integrogram is that original image carried out into the accumulative summation of point-by-point integration according to pixel, and such as image is from the upper left corner
Pixel starts, in image the 1st row the 1st row pixel integration and be the pixel pixel value, by that analogy, in image
The integration and the pixel exactly before it of the pixel of the row of m rows n-th are the integration of the pixel of the row of m rows (n-1)th
Pixel with the pixel arranged plus m rows n-th is worth to.
The integrogram numerical value that will be calculated is stored in a list, and the integrogram numerical value of such a specific region is just
Can be obtained by searching corresponding position in the list.
Average in image in a region is equal to integrogram numerical value in the region divided by the area size, and variance is just
Equal to the integrogram numerical value of each pixel of region subtract average square divided by the area size.
As shown in figure 3, the another object of the embodiment of the present invention is to provide a kind of equipment for generating digital subtraction image, including
Survey meter 1, operating desk 2, image processor 3, display 4 and holder 5.Using digital processing technology, image processor 3 can be real
Shi Shengcheng digital subtraction images.
Survey meter 1 includes x-ray bulb 11, flat panel detector (FPD) 12 and video frequency collection card 13.X-ray bulb 11 projects x-ray
Through patient body, original image is formed on flat panel detector 12, original image output is arrived video acquisition by flat panel detector
Card 13.
Operating desk 2 is used to read the raw image data of the caching of video frequency collection card 13, and sends it to image processor
3。
Image processor 3 includes signal input port and signal outlet, and wave digital lowpass filter 31 and subtracter 32 are embedded in figure
As processor 3.
Raw image data passes through signal input port input picture processor 3；Signal input port passes raw image data respectively
It is defeated by wave digital lowpass filter 31 and subtracter 32；Wave digital lowpass filter 31 obtains frisket by the treatment to original image
Image, and by frisket image transmitting to subtracter 32；Subtracter 32 combines original image and frisket image, obtains DSA images.
The preferred wave digital lowpass filter 31 of the embodiment of the present invention is wave filter.
DSA images are transferred to display by signal outlet, are checked for healthcare givers.
The connection operation platform 2 of holder 5, to operating desk 2, operating desk 2 will for the DSA image transmittings that image processor 3 will be generated
Holder 5 is arrived in its storage, in case subsequently using.
Embodiment 1
As shown in figure 4, when needing the digital subtraction image of patient, during auxiliary treatment, doctor start contrast medium injector to
Push-in contrast agent, treats that contrast agent flows in intravascular and reaches expanded state in patient vessel, restarts X-ray exposure and opens the light.By x-ray
Bulb projects x-ray and passes through patient body, and original image is formed on flat panel detector (FPD), and flat panel detector is through video acquisition
Original image is sent to image processing system by card.
Image processing system includes operating desk, GPU and display.Operating desk reads figure from the caching of video frequency collection card
As data, and send it to graphic process unit GPU and carry out the calculating of real-time frisket generation, the DSA images being calculated are by scheming
Shape processor GPU is sent to video card device, and DSA images are shown by video card device.
Above-mentioned x-ray bulb, flat panel detector and video frequency collection card are all the doctor towards medical interventional imaging application scenario
Treat apparatus.Image processing system, typically towards the system of medical interventional imaging application, wherein, operating desk is typically desktop platform
Formula machine, it is also possible to which there is the smart machine of calculation processing power similar with desktop desktop computer using other according to actual needs.Doctor
Belong to the display device towards clinical medicine image field with the video card of display and its outfit.Graphic process unit is typically to support
The graphic process unit plug-in card of CUDA computing architectures, while also including supporting that the graphic process unit of OpenCL and OpenGL frameworks is inserted
Card.
Embodiment 2
As shown in figure 5, as different from Example 1, after graphic process unit (GPU) generation DSA images, being returned to behaviour
Make platform, DSA images are sent to CD drive, DSA result images are burnt into CD by CD drive by operating desk again
In.CD drive can be integrated on operating desk, it is also possible to used as separate devices, and CD is the conventional electricity such as VCD, DVD
Brain consumptive material.
It should be noted that each embodiment above by reference to described by accompanying drawing is only used to illustrate rather than limitation originally
The scope of invention, it will be understood by those within the art that, it is right under the premise without departing from the spirit and scope of the present invention
Modification or equivalent that the present invention is carried out, all should cover within the scope of the present invention.Additionally, signified unless the context
Outward, the word for occurring in the singular includes plural form, and vice versa.In addition, unless stated otherwise, then any embodiment
All or part of can combine any other embodiment all or part of use.
Claims (10)
1. a kind of generation method of digital subtraction image, it is characterised in that including step：
A, to contrast agent is injected in human body, survey meter is exposed to human body, collects original image；
B, by the original image importing digital low pass filter, be smoothed, obtain frisket image；
C, the original image is input into subtracter together with frisket image, carries out subtracting each other treatment, obtain digital subtraction image.
2. the generation method of digital subtraction image according to claim 1, it is characterised in that the wave digital lowpass filter
It is edge preserving filter.
3. the generation method of digital subtraction image according to claim 2, it is characterised in that the edge preserving filter is to draw
Waveguide filter.
4. the generation method of digital subtraction image according to claim 3, it is characterised in that the window of the wave filter
Mouth size is 4~6.
5. the generation method of digital subtraction image according to claim 1, it is characterised in that by the digital low-pass filtering
Device and subtracter are embedded in image processor；Using image processor, the step B and step C is realized.
6. the generation method of digital subtraction image according to claim 5, it is characterised in that the wave digital lowpass filter
It is wave filter, the smoothing processing includes step：
F, the pixel to the original image carry out the accumulative summation of point-by-point integration, generate integrogram, obtain integrogram numerical value, will
The integrogram numerical value is stored in list；
G, the calculating that average and variance are carried out to the integrogram numerical value in the list, obtain value before filtering；
H, to value before the filtering guide filtering calculate, obtain frisket image.
7. a kind of equipment for generating digital subtraction image, including survey meter, subtracter, display and operating desk, it is characterised in that
Further include image processor；
Described image processor includes signal input port and signal outlet, and described image processor is embedded with wave digital lowpass filter；
The subtracter is embedded in described image processor, and the signal input port connects the wave digital lowpass filter and subtracts respectively
Musical instruments used in a Buddhist or Taoist mass, the wave digital lowpass filter connects the subtracter, and the subtracter connects the signal outlet；
The survey meter connects the operating desk, and the operating desk connects the signal input port, and the signal outlet connection is described
Display.
8. it is according to claim 7 generation digital subtraction image equipment, it is characterised in that the wave digital lowpass filter
It is edge preserving filter.
9. the equipment of generation digital subtraction image according to claim 8, it is characterised in that the edge preserving filter is to draw
Waveguide filter.
10. it is according to claim 7 generation digital subtraction image equipment, it is characterised in that further include holder,
The holder connects the operating desk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097313.7A CN106923850A (en) | 2017-02-22 | 2017-02-22 | The generation method and equipment of a kind of digital subtraction image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097313.7A CN106923850A (en) | 2017-02-22 | 2017-02-22 | The generation method and equipment of a kind of digital subtraction image |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106923850A true CN106923850A (en) | 2017-07-07 |
Family
ID=59423769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710097313.7A Pending CN106923850A (en) | 2017-02-22 | 2017-02-22 | The generation method and equipment of a kind of digital subtraction image |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106923850A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110755097A (en) * | 2018-07-25 | 2020-02-07 | 通用电气公司 | Medical imaging method and system, computer readable storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4720843A (en) * | 1985-04-24 | 1988-01-19 | U.S. Philips Corporation | Method for separating moving structures from a fixed background in a sequence of X-ray projection images and equipment for implementing this method |
| CN1141156A (en) * | 1995-05-22 | 1997-01-29 | 株式会社岛津制作所 | Digital angiographic apparatus |
| US20030053600A1 (en) * | 2001-08-11 | 2003-03-20 | Georg Schmitz | Apparatus and method for processing of digital images |
| CN1819621A (en) * | 2006-01-25 | 2006-08-16 | 杭州维科软件工程有限责任公司 | Medical image enhancing processing method |
| CN101015462A (en) * | 2005-09-28 | 2007-08-15 | 西门子公司 | Method and apparatus for post-processing of a 3D image data record, in particular for virtual colonography |
| CN102346803A (en) * | 2010-07-28 | 2012-02-08 | 北京集翔多维信息技术有限公司 | Cardioangiographic image analysis system |
| CN102646264A (en) * | 2011-02-18 | 2012-08-22 | 北京卫金帆医学技术发展有限公司 | Image registration method for compensating mechanical movement error |
| CN103390284A (en) * | 2012-05-08 | 2013-11-13 | 西门子公司 | CT image reconstruction in the extended field of view |
| CN104657942A (en) * | 2014-12-08 | 2015-05-27 | 浙江工业大学 | Medical ultrasound image noise reduction method based on thresholding improved wavelet transform and guide filter |
-
2017
- 2017-02-22 CN CN201710097313.7A patent/CN106923850A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4720843A (en) * | 1985-04-24 | 1988-01-19 | U.S. Philips Corporation | Method for separating moving structures from a fixed background in a sequence of X-ray projection images and equipment for implementing this method |
| CN1141156A (en) * | 1995-05-22 | 1997-01-29 | 株式会社岛津制作所 | Digital angiographic apparatus |
| US20030053600A1 (en) * | 2001-08-11 | 2003-03-20 | Georg Schmitz | Apparatus and method for processing of digital images |
| CN101015462A (en) * | 2005-09-28 | 2007-08-15 | 西门子公司 | Method and apparatus for post-processing of a 3D image data record, in particular for virtual colonography |
| CN1819621A (en) * | 2006-01-25 | 2006-08-16 | 杭州维科软件工程有限责任公司 | Medical image enhancing processing method |
| CN102346803A (en) * | 2010-07-28 | 2012-02-08 | 北京集翔多维信息技术有限公司 | Cardioangiographic image analysis system |
| CN102646264A (en) * | 2011-02-18 | 2012-08-22 | 北京卫金帆医学技术发展有限公司 | Image registration method for compensating mechanical movement error |
| CN103390284A (en) * | 2012-05-08 | 2013-11-13 | 西门子公司 | CT image reconstruction in the extended field of view |
| CN104657942A (en) * | 2014-12-08 | 2015-05-27 | 浙江工业大学 | Medical ultrasound image noise reduction method based on thresholding improved wavelet transform and guide filter |
Non-Patent Citations (1)
| Title |
|---|
| KAIMING HE，ET AL: "Fast Guided Filter", 《ARXIV：1505.00996V1》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110755097A (en) * | 2018-07-25 | 2020-02-07 | 通用电气公司 | Medical imaging method and system, computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8345823B2 (en) | X-ray image diagnosing apparatus, and controlling method of X-ray image diagnosing apparatus | |
| Glöckler et al. | Multimodality 3D‐roadmap for cardiovascular interventions in congenital heart disease—A single‐center, retrospective analysis of 78 cases | |
| US8634627B2 (en) | Image processing apparatus, X-ray CT apparatus, and image processing method | |
| CN102481134B (en) | Medical imaging diagnostic apparatus | |
| CN106175805B (en) | Image processing apparatus, radiographic apparatus and image processing method | |
| CN102573636B (en) | Medical image diagnosis device and method for assisting medical diagnosis | |
| JP2006150080A (en) | Angiographic x-ray diagnostic device for rotational angiography | |
| Pai et al. | Coronary artery wall imaging in mice using osmium tetroxide and micro‐computed tomography (micro‐CT) | |
| US7907217B2 (en) | Systems and methods of subtraction angiography utilizing motion prediction | |
| JP2006034952A (en) | X-ray image diagnostic apparatus and diagnostic support method therefor | |
| CN102327124A (en) | Be chosen in method, equipment and the data medium of the magnitude of voltage that is provided with on the X-ray tube | |
| JP2012090883A (en) | Image processor and program | |
| Jin et al. | Impact of StentBoost subtract imaging on patient radiation exposure during percutaneous coronary intervention | |
| CN107157507A (en) | A kind of CT digital subtraction angiographys imaging system and method | |
| US20210334959A1 (en) | Inference apparatus, medical apparatus, and program | |
| CN106923850A (en) | The generation method and equipment of a kind of digital subtraction image | |
| US10079003B2 (en) | Method and device for imaging a region of interest | |
| US20180256124A1 (en) | X-ray diagnostic apparatus, image processing apparatus, and image processing method | |
| CN107260189A (en) | The system and method that dose of radiation is adjusted during imaging for the object in person under inspection | |
| Lee et al. | Flat panel detector c-arms are associated with dramatically reduced radiation exposure during ureteroscopy and produce superior images | |
| Amirian et al. | Mitigation of motion‐induced artifacts in cone beam computed tomography using deep convolutional neural networks | |
| CN107095650A (en) | A kind of method and device for obtaining human diagnosis 3-D view | |
| Yamamoto et al. | Pulmonary perfusion by chest digital dynamic radiography: comparison between breath‐holding and deep‐breathing acquisition | |
| JP2020168197A (en) | Radiation fluoroscopic imaging apparatus | |
| CN116416329A (en) | Mammary gland tomographic image reconstruction method and system |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170707 |
|
| RJ01 | Rejection of invention patent application after publication |