CN102525523B - Image viewer and CT equipment - Google Patents
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Abstract
The invention discloses a kind of image viewer and CT equipment.A kind of image viewer of the present invention is included in described image viewer and is provided with target zoom in/out instrument, wherein, when have selected area-of-interest and click described target zoom in/out instrument, carrying out image reconstruction by described background processor and the image rebuild and obtain being shown in described image viewer.Another kind of image viewer of the present invention is included in described image viewer and is provided with amplifier instrument, and wherein when clicking described amplifier instrument, background processor is carried out image reconstruction with most high spatial resolution and obtained high-resolution full images; When on certain region described amplifier instrument being placed on current display image in described image viewer, then the image intercepting current display image size centered by certain region described on high-resolution full images shows.CT equipment of the present invention comprises image viewer of the present invention.Technical scheme of the present invention is adopted to make image browsing more convenient.
Description
Technical field
Present invention relates in general to CT apparatus field, particularly relate to a kind of image viewer and CT equipment.
Background technology
Because CT equipment can carry out clearly imaging to the region of anatomy of human body, understand so the region of anatomy of doctor to human body can be allowed to have sense organ clearly, thus good assosting effect is served to diagnosis and disease therapy, current CT equipment has been widely used in medical diagnosis and treatment field.
Radiologic technologist is when checking region of interest area image by image viewer, in order to further check anatomical detail, usually need transformation space resolution (plane spatial resolution), normally will check the image of the area-of-interest with high spatial resolution.Current image viewer only has Zoomin/out(zoom in/out) function (Zoomin/out instrument), as shown in Figure 1, when user selects Zoomin/out instrument, this Zoomin/out function is just carried out filler pixels by modes such as rough interpolation/merging and is carried out image reconstruction, this Zoomin/out function can not rebuild image from raw scanning data, so the definition of the reconstruction image obtained is limited, the anatomical detail that can view is limited too.
Function that current image viewer also exists " image amplifier (ImageMagnifier) " transfers each several part on giant-screen in the control of cursor of mouse, it provides various amplified filter to show image in detail, such as DesktopMagnifierforWindows.But these are all pure post processing of image instruments up to now.
" Microsoftsliverlight " platform exists " amplification of the DeepZoom(degree of depth) " function.One is made up of JPEG or the PNG image sheet being in different resolution through degree of depth enlarged image.Picture size typically is 256 × 256, but this size also can be revised.Every sheet is stored in an independent file, and pyramidal every grade is stored in an independent file, and this makes the degree of depth amplify those sheets required for image that only can obtain current size on screen, and can not download whole complete image.Such as, if will amplify to check mid portion highlighted in image, the degree of depth is amplified can only be loaded into highlighted sheet instead of whole 1024 × 1024 images.
As everyone knows, in order to check the anatomical structure of more high spatial resolution, the sampled distance between image pixel must be reduced.The sampled distance reduced between image pixel can be rebuild image array size by increasing or rebuild FOV(FieldofView, the visual field by reduction) reach.
Increase reconstruction image array size and not only affect reconstruction speed, but also increase memory space.Therefore, the CT equipment of current General Electric, when considering reconstruction performance, provides the image of 512 × 512 sizes.
If radiologic technologist is wanted to check more detailed anatomical structure, current common way is switched to original data-centric from image viewer, select initial data and rebuild after carrying out image by the reconstructed center wanted and reconstruction regions, after having rebuild after image, more again switch back image viewer to check the new image rebuild.But the reconstruction parameter that often can there is reconstructed center and reconstruction regions and so on sets undesirable situation, so just need again to be switched to original data-centric from image viewer again.In order to obtain desirable image, being switched to the rear image reconstruction of original data-centric-carry out-switch back image viewer from image viewer usually needs to carry out several times, very inconvenient.
Summary of the invention
The main technical problem to be solved in the present invention is to provide a kind of image viewer and the CT equipment that can browse the image of various resolution expediently.
In order to solve the problem, in one aspect of the invention, the invention discloses a kind of image viewer, it is for showing the image of CT device scan gained, and the technical scheme of this image viewer comprises:
Described image viewer is provided with target zoom in/out instrument, wherein:
When have selected area-of-interest and click described target zoom in/out instrument, reconstruction request with reconstruction parameter is sent to background processor, carries out image reconstruction and return to described image viewer to show in described image viewer by rebuilding the image obtained by described background processor according to described reconstruction parameter.
Described reconstruction parameter comprises reconstructed center and rebuilds the visual field.
If selected area-of-interest is consistent with the image-region of the current display of described image viewer, then current reconstructed center is set to the described reconstructed center needing to carry out image reconstruction; Otherwise current mouse click location is set to the described reconstructed center needing to carry out image reconstruction.
The described reconstruction visual field=current reconstruction visual field +/-rebuilds visual field step-length;
The changing value in the visual field is rebuild when described reconstruction visual field step-length refers to each image reconstruction.
Preferably, mouse roller rolling once or on keyboard, shortcut is pressed is once a reconstruction visual field step-length.
In addition, described reconstruction visual field step-length can be set by the user.
In addition, the admissible maximum reconstruction visual field equals scan vision.
In another aspect of this invention, the invention discloses another kind of image viewer, it is for showing the image of CT device scan gained, and the technical scheme of this image viewer comprises:
Described image viewer is provided with amplifier instrument, wherein:
When clicking described amplifier instrument, background processor is carried out image reconstruction with most high spatial resolution and is kept in image data base by rebuilding the high-resolution full images obtained;
When on certain region described amplifier instrument being placed on current display image in described image viewer, then the image high-resolution full images deposited in described image data base centered by certain region described intercepting current display image size is presented in described image viewer.
In addition, the center and the size that leave the described high-resolution full images in described image data base in are fixing.
The size of the image in addition described image viewer shown can be defined by the user.
In another aspect of the invention, the present invention also discloses a kind of CT equipment, and the technical scheme of described CT equipment comprises aforesaid image viewer.
Compared with prior art, the beneficial effect of image viewer of the present invention and CT equipment is:
First, owing to present invention employs target zoom in/out instrument and/or amplifier instrument, as long as click the image that these instruments just can browse to various resolution, be equivalent to " key operation ", therefore to browse the image of various resolution very convenient for image viewer of the present invention.
Secondly, owing to present invention employs target zoom in/out instrument and/or amplifier instrument, eliminate with the repeatedly switching from image viewer to original data-centric, greatly increase browse efficiency.
Accompanying drawing explanation
In order to the more thorough understanding of present disclosure, below with reference to following description carried out by reference to the accompanying drawings, in the accompanying drawings:
Fig. 1 is the schematic diagram of the display interface of prior art image viewer;
Fig. 2 is the schematic diagram of the display interface of an embodiment of foundation image viewer of the present invention.
Detailed description of the invention
Specific embodiments of the invention will be described in detail below, but the present invention is not limited to following specific embodiment.
As shown in Figure 2, in one aspect of the invention, disclosing a kind of image viewer, for showing the image of CT device scan gained, described image viewer being provided with target zoom in/out (Targetin/out) instrument, wherein:
When have selected area-of-interest and click described target zoom in/out instrument, reconstruction request with reconstruction parameter is sent to background processor, carries out image reconstruction and return to described image viewer to show in described image viewer by rebuilding the image obtained by described background processor according to described reconstruction parameter.
From the above, when have selected area-of-interest and click Targetin/out, the new reconstruction request with reconstruction parameter will be sent to background processor, rebuild according to received reconstruction parameter by background processor, that is, this programme rebuilds image based on initial data and new reconstruction parameter, instead of utilize the methods such as interpolation/merging to process original image, can be more clear than existing image viewer when therefore adopting this programme will check the image of higher spatial resolution.
In addition, compared to all wanting user to be switched to original data-centric from image viewer at every turn, efficiency higher and also use very convenient.
Described reconstruction parameter comprises reconstructed center and rebuilds the visual field (DFOV).According to reconstructed center and the reconstruction visual field, the known method for reconstructing of any one can be adopted to rebuild image based on initial data, do not repeat them here about method for reconstructing.
For the determination of reconstructed center, can according to following:
If selected area-of-interest is consistent with the image-region of the current display of described image viewer, then current reconstructed center is set to the described reconstructed center needing to carry out image reconstruction; Otherwise current mouse click location is set to the described reconstructed center needing to carry out image reconstruction.
Wherein, if selected area-of-interest is consistent with the image-region of the current display of described image viewer, that is, area-of-interest need not be specified in addition again, current display be area-of-interest, like this, the value of current reconstructed center is put into position corresponding to new reconstruction request reconstructed center.If the image-region of selected area-of-interest and the current display of described image viewer is inconsistent, that is define area-of-interest in addition, so just current mouse click location is set to new reconstructed center.
For the determination of DFOV, can according to following:
The described reconstruction visual field=current reconstruction visual field +/-rebuilds visual field step-length (DFOVstep);
If target amplifies (Targetin), should be:
The current DFOV-DFOVstep of DFOV=
If shrinking of object (Targetout), should be:
The current DFOV+DFOVstep of DFOV=
Roll before mouse and represent that target is amplified, after mouse, roll expression shrinking of object.
Each click or mouse rollovers can generate a new reconstruction request.
Rebuild the changing value rebuilding the visual field when visual field step-length refers to each reconstruction, it can be set according to use habit by user.
In addition, mouse roller rolling once or on keyboard, shortcut (hotkey) is pressed is once a reconstruction visual field step-length.On keyboard, namely shortcut is similar to the key of pageup/pagedown.For example, on keyboard, certain pair of keys just corresponds to targetin/out.Often roll by being once similar to roller.
In addition, the admissible maximum reconstruction visual field equals scan vision.
New images can be stored in after background processor completes image reconstruction in image data base and to be labeled as the rear reconstruction image of current execution, meanwhile, new images also returns and in image viewer, shows to image viewer replace image viewer shows present image in real time by background processor.
In another aspect of the invention, the invention also discloses a kind of image viewer, for showing the image of CT device scan gained, described image viewer being provided with amplifier (magnifier) instrument, wherein:
When clicking described amplifier instrument, background processor is carried out image reconstruction with most high spatial resolution and is kept in image data base by rebuilding the high-resolution full images obtained;
When on certain region described amplifier instrument being placed on current display image in described image viewer, then the image high-resolution full images deposited in described image data base centered by certain region described intercepting current display image size is presented in described image viewer.
In addition, the center and the size that leave the described high-resolution full images in described image data base in are fixing.
Certainly, the size of the image described image viewer shown can be defined by the user.
It can thus be appreciated that when " magnifier " instrument of click, ask to background processor by the new reconstruction of transmission, background processor just carries out image reconstruction with most high spatial resolution.Reconstructed center is original reconstructed center.For given SFOV(scanfieldofview, scan vision), the optional maximum DFOV of user equals SFOV.Each given CT system exists one and actual maximumly allows plane spatial resolution when rebuilding maximum DFOV image.Allow that plane spatial resolution (correspond to rebuild image array size) and maximum DFOV carry out the image that image reconstruction obtains and can be called optimized image with maximum, also can be called high-resolution full images.Optimized image is stored in image data base for the image covering current display on browser.When " magnifier " instrument is placed on certain region of current display image in described image viewer, centered by certain region, on described high-resolution full images, intercept the image of current display image size and be presented to replace described current display image in described image viewer, to enable user see more details in real time.
From the above, image image viewer shown intercepts from whole optimized image (high-resolution full images).The center of this image is exactly the position of the image that described amplifier instrument is placed on, and the size of this image is fixing and can be set by the user.
Above-mentioned Targetin/out instrument and Magnifier instrument be may reside in same image viewer.
Of the present invention in another, disclose a kind of CT equipment, this CT equipment comprises above-mentioned image viewer.This image viewer can only have one of Targetin/out instrument and Magnifier instrument or both have concurrently.
For Targetin/out instrument and Magnifier instrument, be detailed above, do not repeat them here.
Owing to present invention employs target zoom in/out instrument and/or amplifier instrument, as long as click the image that these instruments just can browse to various resolution, be equivalent to " key operation ", the image therefore browsing various resolution is very convenient.
In addition, owing to present invention employs target zoom in/out instrument and/or amplifier instrument, eliminate with the repeatedly switching from image viewer to original data-centric, greatly increase browse efficiency.
Although describe specific embodiments of the invention by reference to the accompanying drawings above-mentioned, those skilled in the art without departing from the spirit and scope of the present invention, can carry out various change, amendment and equivalent substitution to the present invention.These change, amendment and equivalent substitution all mean and fall within spirit and scope that the claim of enclosing limits.
Claims (11)
1. an image viewer, for showing the image of CT device scan gained, is characterized in that, described image viewer is provided with target zoom in/out instrument, wherein:
When have selected area-of-interest and click described target zoom in/out instrument, reconstruction request with reconstruction parameter is sent to background processor, carries out image reconstruction and return to described image viewer to show in described image viewer by rebuilding the image obtained by described background processor according to described reconstruction parameter.
2. image viewer as claimed in claim 1, is characterized in that, described reconstruction parameter comprises reconstructed center and rebuilds the visual field.
3. image viewer as claimed in claim 2, is characterized in that:
If selected area-of-interest is consistent with the image-region of the current display of described image viewer, then current reconstructed center is set to the described reconstructed center needing to carry out image reconstruction; Otherwise current mouse click location is set to the described reconstructed center needing to carry out image reconstruction.
4. image viewer as claimed in claim 3, is characterized in that:
The described reconstruction visual field=current reconstruction visual field +/-rebuilds visual field step-length;
The changing value in the visual field is rebuild when described reconstruction visual field step-length refers to each image reconstruction.
5. image viewer as claimed in claim 4, is characterized in that, mouse roller rolls once or on keyboard, shortcut is pressed is once a reconstruction visual field step-length.
6. image viewer as claimed in claim 5, it is characterized in that, described reconstruction visual field step-length can be set by the user.
7. image viewer as claimed in claim 6, it is characterized in that, the admissible maximum reconstruction visual field equals scan vision.
8. an image viewer, for showing the image of CT device scan gained, is characterized in that, described image viewer is provided with amplifier instrument, wherein:
When clicking described amplifier instrument, background processor is carried out image reconstruction with most high spatial resolution and is kept in image data base by rebuilding the high-resolution full images obtained;
When on certain region described amplifier instrument being placed on current display image in described image viewer, then the image high-resolution full images deposited in described image data base centered by certain region described intercepting current display image size is presented in described image viewer.
9. image viewer as claimed in claim 8, it is characterized in that, the center and the size that leave the described high-resolution full images in described image data base in are fixing.
10. image viewer as claimed in claim 9, it is characterized in that, the size of the image that described image viewer shows can be defined by the user.
11. 1 kinds of CT equipment, is characterized in that, comprise the image viewer as described in any one of claim 1 to 7 or the image viewer as described in any one of claim 8 to 10.
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| CN109168029A (en) * | 2018-09-04 | 2019-01-08 | 努比亚技术有限公司 | It is a kind of adjust resolution ratio method, equipment and computer can storage medium |
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| KR101604812B1 (en) * | 2014-01-15 | 2016-03-18 | 삼성전자주식회사 | Medical image processing apparatus and medical image processing method thereof |
| CN108074640A (en) * | 2016-11-07 | 2018-05-25 | 北京东软医疗设备有限公司 | A kind of inspection method and device of different-thickness reconstruction image |
| CN107146266A (en) * | 2017-05-05 | 2017-09-08 | 上海联影医疗科技有限公司 | A kind of image rebuilding method, device, medical image system and storage medium |
| CN107392897B (en) * | 2017-07-17 | 2021-02-02 | 上海联影医疗科技股份有限公司 | Organ contour acquisition method, imaging apparatus, radiotherapy planning system, and storage medium |
| US10453237B2 (en) | 2017-12-21 | 2019-10-22 | International Business Machines Corporation | Automatic viewport releveling |
| CN109727297B (en) * | 2018-12-29 | 2023-08-08 | 上海联影医疗科技股份有限公司 | Medical image reconstruction method, system, readable storage medium and apparatus |
| WO2023039736A1 (en) * | 2021-09-15 | 2023-03-23 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for image reconstruction |
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| JP2002023911A (en) * | 2000-07-06 | 2002-01-25 | Nippon Telegr & Teleph Corp <Ntt> | Device and method for picture display processing and program recording medium therefor |
| US8081809B2 (en) * | 2006-11-22 | 2011-12-20 | General Electric Company | Methods and systems for optimizing high resolution image reconstruction |
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| CN109168029A (en) * | 2018-09-04 | 2019-01-08 | 努比亚技术有限公司 | It is a kind of adjust resolution ratio method, equipment and computer can storage medium |
| CN109168029B (en) * | 2018-09-04 | 2020-12-29 | 努比亚技术有限公司 | Method, device and computer-readable storage medium for adjusting resolution |
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