CN207336028U - A kind of OCT image pumpback performance testing device - Google Patents
A kind of OCT image pumpback performance testing device Download PDFInfo
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- CN207336028U CN207336028U CN201721089314.9U CN201721089314U CN207336028U CN 207336028 U CN207336028 U CN 207336028U CN 201721089314 U CN201721089314 U CN 201721089314U CN 207336028 U CN207336028 U CN 207336028U
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Abstract
The utility model discloses a kind of OCT image pumpback performance testing device, including hard material group, the hard material group includes at least two panels hard material piece, wall is provided between the hard material piece, the hard material group includes the first hard material group and the second hard material group, the first hard material group and the second hard material group are fixedly mounted and form storage tank, and the storage tank is used to place OCT conduits.The OCT image pumpback performance testing device of the utility model intuitively can effectively measure the lateral resolution and axial resolution of OCT conduits, and can also test the pumpback stability of OCT equipment.
Description
Technical field
It the utility model is related to a kind of the field of medical instrument technology, more particularly to a kind of OCT image pumpback performance test dress
Put.
Background technology
At present, optical coherence tomography (OCT) imaging be a kind of noninvasive three-dimensional of research and propose phase early 1990s into
As diagnostic techniques.With traditional nuclear-magnetism, X-ray is compared with imaging techniques such as ultrasounds, and OCT has the resolution ratio of higher, can be extremely micro-
Meter level, and due to being near-infrared spectroscopy, without worrying any radiation risk；It is micro- with the optical confocal of Testing in vitro
Mirror is compared, and OCT has a penetration depth of bigger, and by by optical fiber technology be easy to can be achieved with miniaturization with it is portable
Formula, can carry out on-line checking to living tissue.1996, German Carl Zeiss Inc. developed First commercialization in the world
OCT equipment, the certification of food Bureau of Drugs Supervision of the first passage U.S. in 2002 (FDA).1997, in Zhongshan University of China in the ophthalmology of mountain
The heart introduces domestic First OCT instruments from foreign countries, and is used for clinical examination and clinical research.
In recent years, OCT obtains the development advanced by leaps and bounds as a kind of new imaging technique, and traditional OCT equipment is
Extensive clinical diagnostic applications are obtained in field of ophthalmology.Moreover, with reference to optical fiber and endoscopic technique, research started by
OCT image method is applied to skin, tooth, angiocarpy, the multiple fields such as esophagus, Brian Imaging.The application range of OCT technology is by right
The longitudinal probing of transparent organism tissue is developed into the high detection for scattering nontransparent institutional framework sample, from the detection of biological tissue
Develop into the industrial circles such as the detection to non-biological material.
Because OCT is a kind of emerging imaging technique, at present in the world also without corresponding technical standard.Marked in the world
In the annual meeting in 2010 of standardization tissue ISO/TC172/SC7 " opticianry and instrument " technical committee, German delegation proposes
The application of careless OCT international standards, standard is still in preparation stage, China National Measuring Science Research Inst.'s medicine and biological study institute at present
Technology as Chinese opticianry represents is playing an active part in discussion of the ISO working groups to OCT standards always.Current OCT equipment
Present situation be, all technical parameters substantially all by producer oneself provide, especially possess ability pair in China, no third-party institution
The parameter that producer provides is verified or examined and determine.OCT is a kind of imaging technique, and resolution ratio is that evaluation imaging performance is critically important
One index.Traditional two-dimensional optical imaging system generally use resolution test plate (such as USAF1951 as microscope
Resolving power test target) resolution ratio is tested.This resolving power test target is typically that picture on surface is adopted using quartzy hard material as substrate
Formed with the metallic nickel or chromium of one layer of nanometer grade thickness of evaporation or deposition.And the imaging resolution of OCT equipment not only includes
Traditional X-axis, Y-axis lateral resolution, it is also necessary to evaluate its resolution ratio and axial resolution on investigation depth direction.Due to
The advantage of OCT technology maximum is exactly that can provide the faultage image of depth direction, therefore evaluates its axial resolution and seem particularly heavy
Will.
According to investigation, oneself the nominal method of OCT equipment imaging resolutions of most of OCT producers is：Using traditional optical
Resolving power test target is tested to obtain the lateral resolution of OCT equipment, and plane mirror is measured as sample and obtains OCT equipment indirectly
Axial resolution.The test method of lateral resolution is fairly simple directly, but due to the metal image layer of conventional resolution plate
It is very thin, so test is only capable of obtaining the lateral resolution in some plane.The test method of axial resolution needs accurate adjust
The pitch angle and axial distance of whole plane mirror, it is very cumbersome, and need to obtain the number of OCT equipment imaging pilot process
According to, belonging to indirect measurement, producer debugs before OCT equipment is dispatched from the factory and can so operate, but for terminal user or third party's machine
Structure is then difficult to adopt this method and goes to obtain OCT axial resolutions.
Therefore, there is an urgent need to provide a kind of simple directly measuring method and standard utensil while can effectively to obtain OCT
The lateral resolution and axial resolution of equipment.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of survey of OCT image pumpback performance
Trial assembly is put, it can solve the technical problem of OCT image pumpback test.
The purpose of this utility model adopts the following technical scheme that realization：
A kind of OCT image pumpback performance testing device, including the first hard material group and the second hard material group, described
One hard material group and the second hard material group include at least two panels hard material piece, the setting between the hard material piece
There is wall, the first hard material group and the second hard material group are fixedly mounted and form storage tank, and the storage tank is used
In placement OCT conduits.
Further, the quantity of hard material piece is two in the first hard material group, second hard material
The quantity of hard material piece is three in group.
Further, the cross section of the storage tank is trapezoidal.
Further, it is described it is trapezoidal be right-angled trapezium.
Further, the quantity of the first hard material group and the second hard material group is two groups, described two group
Cross-fixing is installed to form storage tank successively for one hard material group and two group of second hard material group.
Further, the cross section of the storage tank is isosceles trapezoid.
Further, the hard material piece is glass hard material piece or silicon oxide hard material piece.
Compared with prior art, the beneficial effects of the utility model are：
The OCT image pumpback performance testing device of the utility model intuitively can effectively measure the transverse direction point of OCT conduits
Resolution and axial resolution, and the pumpback stability of OCT equipment can also be tested.
Brief description of the drawings
Fig. 1 is the front view of the OCT image pumpback performance testing device of embodiment two；
Fig. 2 is the top view of the OCT image pumpback performance testing device of embodiment two.
Reference numeral：1st, the first hard material group；2nd, the second hard material group；3rd, wall；4th, hollow channel；5、OCT
Conduit.
Embodiment
In the following, with reference to attached drawing and embodiment, the utility model is described further, it is necessary to explanation is,
On the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
Embodiment one：
Present embodiments provide a kind of OCT image pumpback performance testing device, including the first hard material group and second hard
Material group, the first hard material group and the second hard material group include at least two panels hard material piece, preferably in fact
Apply mode, the quantity of hard material piece is two in the first hard material group, the number of hard material piece in the second hard material group
Measure as three；In addition to above-mentioned embodiment, multiple hard material pieces can also be set to form hard material group to combine；Institute
State and be provided with wall between hard material piece, wherein the wall of the first hard material group, the purpose is to for testing OCT
The lateral resolution of conduit, the purpose is to the longitudinal resolution for testing OCT conduits for the wall of the second hard material group；Institute
It is glass hard material piece or silicon oxide hard material piece to state hard material piece.
The first hard material group and the second hard material group are fixedly mounted and form storage tank, and the storage tank is used for
OCT conduits are placed, the cross section of the storage tank is trapezoidal shape, most preferably, it is right-angled trapezium that this is trapezoidal, passes through setting
Trapezoidal shape can test its pumpback performance when OCT conduit pumpbacks.
Embodiment two：
As depicted in figs. 1 and 2, a kind of OCT image pumpback performance testing device, including the first hard are present embodiments provided
1 and second hard material group 2 of material group, the quantity of the first hard material group 1 and the second hard material group 2 have two groups,
The first hard material group 1 and the second hard material group 2 include at least two panels hard material piece, two group of first hard material
Material group 1 is arranged on same plane, and two group of second hard material group, the 2 place plane is parallel, two group of first hard material
Group 1 is combined with two group of second hard material group 2 to form hollow channel 4, and the hollow channel 4 is used to place OCT conduits 5.
Preferably, the quantity of hard material piece is two in the first hard material group 1, the second hard material group
The quantity of hard material piece is three in 2.The cross section of the hollow channel 4 is trapezoidal shape, it is further preferable that this trapezoidal is
Isosceles trapezoid, is so more convenient for testing pumpback performance.
The test device has plurality of specifications, and every kind of specification is by the first hard material of test device group 1 and the second hard material
For the thickness of the wall 3 of group 2 come what is determined, the thickness of each wall 3 corresponds to an image recognition resolution ratio.At this
What left and right hard material piece group and front and rear hard material piece group appeared in embodiment referred to is the first hard material group 1 and
Two hard material groups 2.
The test device is composed of four groups of hard material pieces.Front and rear two groups of hard material piece groups are by three blocks of hard materials
Piece is formed by stacking, and two groups of left and right hard material piece group is formed by stacking by two pieces of hard material pieces.Hard material in hard material piece group
The thickness of wall 3 between material is a fixed value.A left side of the one side of front and rear hard material piece group with have rotated certain angle
The both sides of right two hard material piece groups are seamless applying, and centre forms one piece of hollow channel 4.
In the present embodiment, OCT equipment imaging performance and pumpback stability can be evaluated using test device.
It is imaged different from general optical microphotograph, OCT technology is based on the back-scattering light for detecting sample different depth and then by one
Series of signals processing reconstructs the 3-D view in detected region.Just because of in this, OCT image is often in scattering coefficient or anti-
Penetrate the big interface of rate difference and have higher contrast.But if some interface reflectivity of sample is too big, such as mirror surface,
Again OCT overflows can be caused to flood other effective informations on the contrary.It is new in view of imaging mechanism as OCT, this practicality
The test device that type proposes is designed to that four groups of hard material piece groups combine in a certain way and centre leaves certain hollow region and is
OCT conduits 5 are inserted into test zone, the ecotopia of OCT image are simulated well, so as to its imaging of effectively evaluating
Energy.
The lateral resolution and axial resolution test function are real by left and right and front and rear two groups of hard material pieces group respectively
It is existing.The thickness of the wall 3 of the hard material piece group of the test device of each specification is all fixed and differs.Will
OCT conduits 5 are inserted into hollow channel 4, and the test device is detected as target object, obtains its OCT image image.
The lateral resolution of OCT conduits 5 is by analyzing its C-Scan figures (i.e. X/Y plane scanning figure) and B-Scan with axial resolution
What figure (X-Z plane scanning figure) respectively obtained.By constantly replacing the calibrated bolck test device of different size, energy in C-Scan figures
Filament width dimensions (i.e. the space layer of left and right hard material piece group) corresponding to that the minimum group picture case seen clearly
For characterizing the lateral resolution of OCT equipment used.The filament corresponding to that minimum group picture case that can be seen clearly in B-Scan figures is high
Degree size (space layer of i.e. front and rear hard material piece group) can be used to characterize the axial resolution of OCT equipment used.
The pumpback stability test function is realized by hollow region (that is to say hollow channel 4)；The calibrated bolck test
The two groups of hard material piece group angulations in left and right are certain in sample, that is to say that the cross section that hollow channel 4 is formed is isosceles ladder
Shape, the angle of the waist of the isosceles trapezoid could be provided as different angles in order to carry out the pumpback performance of different accuracy to it
Test.OCT conduits 5 are inserted into hollow channel 4, during pumpback, Real Time Observation institute is into OCT image.Observation caliber block is tested
Whether the position of front and rear and left and right hard material piece group intermediate interlayer in the picture changes in sample, so as to judge pumpback performance
Stability.
Compared with traditional optical resolution beta version, the calibrated bolck test sample that the utility model is proposed uses hard
Material piece combines to form module, more intuitively can effectively test out the lateral resolution and axial resolution of OCT equipment, no
Two-dimentional resolution is can only be used to, also at the same time for evaluating the axial resolution of OCT equipment in the depth direction.More, this practicality
The new pumpback stability that can also test OCT equipment.
The above embodiment is only the preferred embodiment of the utility model, it is impossible to is protected with this to limit the utility model
Scope, the change of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacing belongs to
In the utility model scope claimed.
Claims (7)
- A kind of 1. OCT image pumpback performance testing device, it is characterised in that including hard material group, the hard material group bag Include at least two panels hard material piece, be provided with wall between the hard material piece, the hard material group includes first Hard material group and the second hard material group, the first hard material group and the second hard material group, which are fixedly mounted and are formed, to be held Groove is put, the storage tank is used to place OCT conduits.
- 2. OCT image pumpback performance testing device as claimed in claim 1, it is characterised in that the first hard material group The quantity of middle hard material piece is two, and the quantity of hard material piece is three in the second hard material group.
- 3. OCT image pumpback performance testing device as claimed in claim 1, it is characterised in that the cross section of the storage tank To be trapezoidal.
- 4. OCT image pumpback performance testing device as described in claim 3, it is characterised in that described trapezoidal for right angle ladder Shape.
- 5. OCT image pumpback performance testing device as claimed in claim 2, it is characterised in that the first hard material group Quantity with the second hard material group is two groups, and two group of first hard material group and two group of second hard material group are successively Cross-fixing is installed to form storage tank.
- 6. OCT image pumpback performance testing device as claimed in claim 5, it is characterised in that the cross section of the storage tank For isosceles trapezoid.
- 7. the OCT image pumpback performance testing device as described in any one in claim 1-6, it is characterised in that described hard Material tablet is glass hard material piece or silicon oxide hard material piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721089314.9U CN207336028U (en) | 2017-08-25 | 2017-08-25 | A kind of OCT image pumpback performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721089314.9U CN207336028U (en) | 2017-08-25 | 2017-08-25 | A kind of OCT image pumpback performance testing device |
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| Publication Number | Publication Date |
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| CN207336028U true CN207336028U (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721089314.9U Withdrawn - After Issue CN207336028U (en) | 2017-08-25 | 2017-08-25 | A kind of OCT image pumpback performance testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478414A (en) * | 2017-08-25 | 2017-12-15 | 广州永士达医疗科技有限责任公司 | A kind of OCT image pumpback performance testing device and method |
-
2017
- 2017-08-25 CN CN201721089314.9U patent/CN207336028U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478414A (en) * | 2017-08-25 | 2017-12-15 | 广州永士达医疗科技有限责任公司 | A kind of OCT image pumpback performance testing device and method |
| CN107478414B (en) * | 2017-08-25 | 2023-09-22 | 广州永士达医疗科技有限责任公司 | OCT imaging back-pumping performance testing device and method |
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Granted publication date: 20180508 Effective date of abandoning: 20230922 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180508 Effective date of abandoning: 20230922 |
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