WO2004110276A1 - Verfahren und einheit zur bildaufbereitung von röntgenbildern - Google Patents
Verfahren und einheit zur bildaufbereitung von röntgenbildern Download PDFInfo
- Publication number
- WO2004110276A1 WO2004110276A1 PCT/EP2004/006483 EP2004006483W WO2004110276A1 WO 2004110276 A1 WO2004110276 A1 WO 2004110276A1 EP 2004006483 W EP2004006483 W EP 2004006483W WO 2004110276 A1 WO2004110276 A1 WO 2004110276A1
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- WO
- WIPO (PCT)
- Prior art keywords
- image
- parameter set
- image processing
- standard parameter
- ray
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000007670 refining Methods 0.000 title abstract 2
- 230000004048 modification Effects 0.000 claims abstract description 6
- 238000012986 modification Methods 0.000 claims abstract description 6
- 210000000056 organ Anatomy 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 6
- 230000006870 function Effects 0.000 claims description 4
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 2
- 210000000038 chest Anatomy 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 230000001419 dependent effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000003414 extremity Anatomy 0.000 description 2
- 210000001624 hip Anatomy 0.000 description 2
- 238000002601 radiography Methods 0.000 description 2
- 210000003625 skull Anatomy 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- XQPRBTXUXXVTKB-UHFFFAOYSA-M caesium iodide Chemical compound [I-].[Cs+] XQPRBTXUXXVTKB-UHFFFAOYSA-M 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- 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
- A61B6/46—Arrangements for interfacing with the operator or the patient
- A61B6/461—Displaying means of special interest
- A61B6/465—Displaying means of special interest adapted to display user selection data, e.g. graphical user interface, icons or menus
-
- 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
-
- 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
- A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4291—Arrangements for detecting radiation specially adapted for radiation diagnosis the detector being combined with a grid or grating
-
- 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
- A61B6/46—Arrangements for interfacing with the operator or the patient
- A61B6/467—Arrangements for interfacing with the operator or the patient characterised by special input means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/52—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/5207—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves involving processing of raw data to produce diagnostic data, e.g. for generating an image
Definitions
- the invention relates to a method for image processing of digital X-ray images, in which a predetermined modification is carried out on image data from at least one image processing module as a function of at least one parameter.
- the invention further relates to an image processing unit for carrying out the aforementioned method and an x-ray device containing the image processing unit.
- digital X-ray detectors have been changing classic radiography, angio and cardangiography.
- Various technologies of digital X-ray detection have been in use for some time or are about to be launched on the market. These digital technologies include Image intensifier camera systems based on television or
- CCD cameras imaging plate systems with integrated or external readout unit, selenium-based detectors with electrostatic readout and solid state detectors with active readout matrices with direct or indirect conversion of the X-rays.
- the X-ray image in digital X-ray devices is in electronic form, ie in the form of image data.
- This makes it possible to prepare the x-ray image before it is displayed on a screen using means of electronic image processing, for example in order to make an organ to be examined or a sought-after pathological finding particularly well visible in medical application.
- Common methods of digital image processing include, for example, the pixel-by-pixel application of characteristic curves for the gray value-dependent change in color or brightness of the x-ray image, Filter operations, such as the use of a low-pass, high-pass or median filter, frequency band-dependent filtering, contrast or brightness operations (also referred to as windowing) or the like.
- the abundance of the available setting parameters generally means that the same raw image supplied by the X-ray detector can be processed into end images which differ greatly in terms of their visual impression.
- the expected image impression which is felt to be optimal, generally differs from radiologist to radiologist. This means that when an x-ray system is installed, individual settings with regard to image processing generally have to be made in order to adapt the end images generated by the x-ray device to the taste or school of the x-ray department or even the individual radiologist.
- This setting process usually has to be carried out in close cooperation between the technicians performing the installation and the intended users, i.e. radiologists or other application specialists, especially since the setting of the abstract parameters requires detailed knowledge of image processing technology, which is generally not required for the application personnel, who are usually medically trained can.
- the installation of the x-ray device is therefore associated with considerable expenditure of personnel and time. This is due in particular to the fact that for each organ to be scanned by the X-ray device (eg thorax, hip, abdomen, skull, extremities, etc.), each recording projection (lateral, aperior-posterior, oblique etc.) and possibly different generator settings (voltage , Stream, filtering, dose) different sets of image processing parameters have to be created.
- the invention is based on the object of specifying a method for image processing of X-ray images in which the user-specific adaptation of the parameters used for image processing is simplified.
- the invention is further based on the object of specifying an image processing unit and an x-ray device containing the same, which permit simplified installation.
- this object is achieved according to the invention by the features of claim 1.
- the object is achieved according to the invention by the features of claim 7.
- at least one image processing module of the image processing unit which is dependent on at least one performs a predetermined modification of the image data to a parameter, which or each parameter is supplied from a current parameter set.
- several standard parameter sets are stored in a template memory, from which the current parameter set can be selected.
- image data are stored in an image template memory, using which an associated template image can be displayed for a user to select for each stored standard parameter set.
- the selection of the current parameter set from the available standard parameter sets is not carried out directly, but rather by the user selecting the associated template image.
- the buffer, the template memory and the image template memory are preferably delimited areas on one or more shared storage media, e.g. the RAM of a computer or a hard disk.
- the method according to the invention and the associated image processing unit enable an X-ray device to be set intuitively, particularly since the type and The desired image preparation is not made available for selection on the basis of the abstract parameter sets, but rather on the basis of the template images which give the user a concrete impression of the expected final result of the image preparation.
- the setting of the x-ray device can therefore be largely independent of the medical one with the aid of the method according to the invention
- the image processing unit has a combination module to which the selected standard parameter sets are supplied.
- the current parameter set is preferably formed from a parameter-specific linear combination of the selected standard parameter sets, wherein the individual selected standard parameter sets can preferably be weighted as desired by the user.
- the symbol Pij Nr-1 in GLG 1 stands for the parameter pi j , which is contained in the selected standard parameter set P Nr-1 .
- the symbol pi j akt also stands for the parameter pi j in the current parameter set P akt .
- the total in GLG 1 runs over all selected standard parameter sets
- template images that have already been prepared are stored for each standard parameter set.
- Each stored template image is therefore already modified compared to the underlying raw image in accordance with the associated standard parameter set.
- This image data can be displayed directly to the user.
- the display of the template images is therefore associated with comparatively little data processing effort.
- image data are stored which correspond to a raw image recorded by the x-ray device.
- the template image is created before the display by first feeding the stored raw image data to the image processing module (s) and modifying it in accordance with the associated standard parameter set.
- each projection projection eg lateral, aperior-posterior
- different generator settings which differ, for example in terms of voltage, current, filtering or dose, are stored in different standard parameter sets.
- the image processing unit described above is contained in an X-ray device with the features of claim 10.
- This x-ray device comprises in particular an x-ray emitter for generating x-ray radiation and a digital x-ray detector for taking an x-ray image.
- the x-ray image is supplied in the form of image data to the image processing unit according to the invention, which is part of a preferably computer-aided control and evaluation system.
- This X-ray device is, in particular, that the setting process for the image processing parameters required in the course of its installation is simplified and can be carried out largely independently by the application personnel.
- IG 1 in a schematic representation an X-ray device with an X-ray emitter, a digital X-ray detector and a control and evaluation system comprising an image processing unit,
- FIG. 3 shows a simplified block diagram of the image processing unit of the device according to FIG. 1,
- FIG. 4 shows an expanded representation in accordance with FIG.
- FIG. 5 shows, in a representation according to FIG. 3, an alternative embodiment of the image processing unit
- FIG. 6 shows an exemplary comparison of a raw image recorded by the X-ray detector and two end images modified using different standard parameter sets.
- the x-ray device 1 shown schematically in FIG. 1 comprises an x-ray emitter 2, a digital x-ray detector 3 and a control and evaluation system 4.
- the x-ray emitter 2 and the x-ray detector 3 are interposed in the radiation direction 5 with a depth diaphragm 6 and an anti-scatter grid 7.
- the depth diaphragm 6 serves here to cut out a partial bundle of a desired size from the X-ray radiation R generated by the X-ray emitter 2, which beam falls on the X-ray detector 3 through a person 8 to be examined or an object to be examined and the anti-scatter grid 7.
- the anti-scatter grid 7 is used thereby to suppress lateral scattered radiation which would falsify the X-ray image recorded by the X-ray detector 3.
- the x-ray emitter 2 and the x-ray detector 3 are adjustably attached to a stand 9 or above and below an examination table.
- the control and evaluation system 4 comprises a control unit 10 for controlling the x-ray emitter 2 and / or the x-ray detector 3 and for generating a supply voltage for the x-ray emitter 2.
- the control unit 10 is connected to the x-ray emitter 2 via data and supply lines 11.
- the control and evaluation system 4 further comprises an image processing unit 12.
- the image processing unit 12 is preferably part of a data processing system 13, which contains operating software for the X-ray device 1 in addition to image processing software.
- the data processing system 13 is connected to the control unit 10 and the via data and system bus lines 14
- the data processing system 13 is also connected to input and output data with peripheral devices, in particular a screen 15, a keyboard 16 and a mouse 17.
- the X-ray detector 3 shown in detail in FIG. 2 is a so-called solid-state detector. It comprises a flat active readout matrix 18 made of amorphous silicon (aSi), which is coated with an X-ray converter layer 19, for example made of cesium iodide (CsJ). In this x-ray converter layer 19, the x-ray radiation R incident in the radiation direction 5 is converted into visible light, which is converted into electrical charge in photodiodes 20 of the readout matrix 18. This electrical charge is again stored in a location-resolved manner in the readout matrix 18. The stored charge can, as indicated in the detail 21 shown enlarged in FIG.
- aSi amorphous silicon
- CsJ cesium iodide
- each photodiode 20 by electronic activation 22 of a switching element 23 assigned to each photodiode 20 can be read in the direction of arrow 24 to electronics 25, which are only indicated schematically.
- the electronics 25 generates digital image data B by amplification and analog-digital conversion of the charge read out.
- the image data B are transmitted to the image processing unit 12 via the data and system bus line 14.
- the image processing unit 12 is preferably implemented in the form of a software module implemented in the data processing system 13.
- a simplified block diagram of the image processing unit 12 is shown in FIG. 3.
- the image data B produced by the x-ray detector 3 are accordingly first fed to an input memory 26.
- the input memory 26 thus contains image data B which correspond to a “raw image” I 0 , ie an unprepared X-ray image.
- the image processing modules Ai are, for example, an image sharpness module, filter modules (in particular low-pass, high-pass, median filters and combinations thereof), contrast and brightness modules, frequency band-dependent filter modules or modules for characteristic-dependent modification of the image data
- the first image processing module Ai is a module for contour enhancement (“edge enhancement”).
- edge enhancement As parameters pu, Pi 2 / Pi 3 / • • • assigned to this module A 1 , the size of the filter core, the degree of admixture of a high-pass image, a signal level above or below which the filter acts or is suppressed or the like.
- Each parameter pi j can also contain a single number or a characteristic curve pij (x), ie a functional dependency.
- the entirety of all parameters pij is referred to as parameter set P.
- the parameter set P can be represented, for example, as a two-dimensional field or matrix of the individual parameters pi j or can be handled in terms of data technology.
- the image processing modules Ai are provided with a current parameter set P act .
- This current parameter set P act is preferably stored in a buffer store 27.
- the parameter values contained in the current parameter set P act form the basic setting of the image processing unit 12, so to speak.
- the image processing modules Ai modify the image data B.
- the image data B modified in this way, which now contain an “end image” I ⁇ are stored in an output memory 28.
- the final image I 1 can then be displayed on the screen 15, for example.
- the user can, as described in more detail below, a single standard parameter set Select P Nr-1 (1 e 1,2, ..., K) from the available standard parameter sets p Nr - k , which is assigned to the current parameter set P akt, that is, whose parameter settings are transferred to the current parameter set P akt become.
- the image processing unit 12 also contains an image template memory 30.
- this image template memory 30 in the form of image data B for each standard parameter set p Nr - k
- Template image v Nr-k deposited which can be displayed on the screen 15.
- Each template image v Nr-k corresponds to an end image, ie a raw image modified in accordance with the parameter values of the associated standard parameter set p Nr - k .
- the template image v Nr ' k thus gives the user a visual impression of the end result that can be expected in terms of image preparation when a certain standard parameter set p Nr> k is selected.
- the user now chooses the desired standard parameter set p Nr - k indirectly by selecting the associated template image v Nr " k .
- a particular advantage of the method is that the user no longer necessarily comes into contact with the abstract parameters pi j of the image processing. In particular, this makes it easier for users who are not familiar with the technical details of image processing to handle the x-ray device 1
- Different standard parameter sets p Nr - k are preferably provided for different body parts or organs to be examined, different recording projections and different settings of the x-ray generator.
- the first five standard parameter sets P Nr-1 to P Nr " 5 contain different image processing variants which are used for Chest (thorax) with frontal projection projection (aperior-posterior) and a specific generator setting are provided.
- the following five standard parameter sets p Nr - 6 to p Nr - 10 could, for example, provide different parameter settings for thorax recordings with lateral projection projection, etc. It is easy to see that the number of standard parameter sets p to be provided for all standard cases Nr - k can become very large.
- a menu guide (not shown in more detail) is expediently provided, which guides the user step by step to the goal. For example, the user is asked to first specify the organ to be examined, the desired projection projection and the generator setting. To select the parameter set to be used, the user is then only shown those template images v Nr ' k which correspond to the preselected combination of organ, projection and generator setting.
- the user can select the first and third parameter sets p Nr ⁇ 1 and p Nr - 3 with a weighting ratio of 40:60.
- the Combination module 31 uses the selected standard parameter sets ⁇ p Nr ⁇ and weighting factors ai to create the current parameter set P act by forming the parameter-specific linear combination in accordance with GLG 1 and 2. The result is stored in the buffer 27 as a new current parameter set P act .
- the image template memory 30 advantageously comprises raw images of the various organs to be examined in different recording projections and with different generator settings.
- the index o is used to identify the individual raw image templates V 0 .
- a processing module Ai was used here in each case for image processing, which carries out a gray value shift of the individual image points according to a characteristic curve, ie a functional parameter pi (x).
- the different optical impression of the end images Ii and Ii ⁇ stems from the fact that the parameter pi (x) for creating the end images Ii and I 1 ⁇ two different standard parameter sets P 1 ⁇ - 1 and P Nr ' 2 was taken.
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- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
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- Radiology & Medical Imaging (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/561,377 US7593555B2 (en) | 2003-06-17 | 2004-06-16 | Method and unit for refining digital x-ray images |
JP2006515956A JP2006527612A (ja) | 2003-06-17 | 2004-06-16 | X線画像の画像処理方法および画像処理ユニット |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10327294A DE10327294A1 (de) | 2003-06-17 | 2003-06-17 | Verfahren zur Bildaufbereitung von Röntgenbildern sowie zugehörige Bildaufbereitungseinheit |
DE10327294.1 | 2003-06-17 |
Publications (1)
Publication Number | Publication Date |
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WO2004110276A1 true WO2004110276A1 (de) | 2004-12-23 |
Family
ID=33520669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/006483 WO2004110276A1 (de) | 2003-06-17 | 2004-06-16 | Verfahren und einheit zur bildaufbereitung von röntgenbildern |
Country Status (5)
Country | Link |
---|---|
US (1) | US7593555B2 (de) |
JP (1) | JP2006527612A (de) |
CN (1) | CN100522060C (de) |
DE (1) | DE10327294A1 (de) |
WO (1) | WO2004110276A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005021067A1 (de) * | 2005-05-06 | 2006-11-09 | Siemens Ag | Bildgebende Vorrichtung |
CN105816191A (zh) * | 2016-02-29 | 2016-08-03 | 魏苗苗 | 一种心脏内科急救检测胸腔设备 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7844705B2 (en) * | 2008-05-30 | 2010-11-30 | General Electric Company | Networked image visualization image quality enhancement method and system |
US7856135B1 (en) * | 2009-12-02 | 2010-12-21 | Aibili—Association for Innovation and Biomedical Research on Light and Image | System for analyzing ocular fundus images |
JP5579636B2 (ja) * | 2011-02-07 | 2014-08-27 | 富士フイルム株式会社 | 放射線画像撮影装置および放射線画像撮影方法 |
EP2564786A1 (de) * | 2011-08-31 | 2013-03-06 | General Electric Company | Verfahren zur automatischen Konturfilterpositionierung für medizinischen Röntgenbildgebung |
US9091628B2 (en) | 2012-12-21 | 2015-07-28 | L-3 Communications Security And Detection Systems, Inc. | 3D mapping with two orthogonal imaging views |
KR102154734B1 (ko) | 2013-06-10 | 2020-09-10 | 삼성전자주식회사 | 의료 영상 촬영 방법 및 장치, 및 개인화된 파라미터 값의 생성 방법 |
TWI535421B (zh) * | 2014-05-14 | 2016-06-01 | Automatic identification and adjustment of the selected parts of the medical equipment | |
KR102372214B1 (ko) | 2015-01-19 | 2022-03-14 | 삼성전자주식회사 | 영상 처리 장치, 의료영상 장치 및 영상 처리 방법 |
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2003
- 2003-06-17 DE DE10327294A patent/DE10327294A1/de not_active Withdrawn
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2004
- 2004-06-16 US US10/561,377 patent/US7593555B2/en not_active Expired - Fee Related
- 2004-06-16 JP JP2006515956A patent/JP2006527612A/ja active Pending
- 2004-06-16 WO PCT/EP2004/006483 patent/WO2004110276A1/de active Search and Examination
- 2004-06-16 CN CNB2004800236790A patent/CN100522060C/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20020159567A1 (en) * | 1998-08-31 | 2002-10-31 | Tsukasa Sako | Image collecting system |
US6542579B1 (en) * | 1998-09-30 | 2003-04-01 | Canon Kabushiki Kaisha | X-ray photo-taking system, X-ray photo-taken image display method, and storage medium |
DE10052540A1 (de) * | 2000-10-23 | 2002-05-16 | Siemens Ag | Diagnostikeinrichtung mit Mitteln zur Einstellung von Transferfunktionen |
US20030108154A1 (en) * | 2001-12-11 | 2003-06-12 | Siemens Aktiengesellschaft | Medical imaging examination facility |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005021067A1 (de) * | 2005-05-06 | 2006-11-09 | Siemens Ag | Bildgebende Vorrichtung |
DE102005021067B4 (de) * | 2005-05-06 | 2008-08-28 | Siemens Ag | Bildgebende Vorrichtung |
US8064671B2 (en) | 2005-05-06 | 2011-11-22 | Siemens Aktiengesellschaft | Imaging apparatus |
CN105816191A (zh) * | 2016-02-29 | 2016-08-03 | 魏苗苗 | 一种心脏内科急救检测胸腔设备 |
Also Published As
Publication number | Publication date |
---|---|
US7593555B2 (en) | 2009-09-22 |
JP2006527612A (ja) | 2006-12-07 |
DE10327294A1 (de) | 2005-01-20 |
CN100522060C (zh) | 2009-08-05 |
US20070140542A1 (en) | 2007-06-21 |
CN1835713A (zh) | 2006-09-20 |
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