CN109512459A - Body mould for insertion type ultrasonic imaging test - Google Patents
Body mould for insertion type ultrasonic imaging test Download PDFInfo
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- CN109512459A CN109512459A CN201811647654.8A CN201811647654A CN109512459A CN 109512459 A CN109512459 A CN 109512459A CN 201811647654 A CN201811647654 A CN 201811647654A CN 109512459 A CN109512459 A CN 109512459A
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/58—Testing, adjusting or calibrating the diagnostic device
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Abstract
The present invention relates to a kind of body moulds for insertion type ultrasonic imaging test.The body mould includes: that tissue imitates layer, is made of the first material；Cavity is formed in tissue and imitates in layer and for receiving insertion type ultrasound catheter；And line target, it is made of the second material, tissue, which is arranged in, in line target imitates in layer and extend along the extending direction of cavity, wherein the ultrasonic attribute of the first material and the second material is different.In the present invention, tissue imitates in layer and is provided with cavity, tissue, which is arranged in, in line target imitates in layer and extends along the extending direction of cavity, and enabling tissue imitate layer has different ultrasonic attributes from line target, so as to which as the effective simulation ultrasonic imaging test of body mould, thus, it is possible to effectively assess the imaging effect of insertion type ultrasonic imaging.
Description
Technical field
The present invention relates to a kind of body moulds for insertion type ultrasonic imaging test.
Background technique
Interventional Ultrasound imaging technique is mainly under the monitoring of real-time ultrasound or under guidance, for intracorporal lesion such as blood
The stenosis of pipe carries out ultrasonic imaging, to provide further guidance to insertion type treatment.For the evaluation and test master of supersonic imaging apparatus
There are power detection and image detection.Wherein power detection be mainly pop one's head in output sound intensity detection, using ultrasonic power meter come
Measurement.Image detection mainly includes blind area, vertical definition, transverse resolution, contrast evaluation etc., and it is super to can use imitative tissue
Sound body mould is detected.
Currently, for traditional Type B ultrasonic diagnostic equipment (such as nominal frequency is within the scope of 1.5MHz to 15MHz), in
National standardization administration committee, state issued respective country standard such as GB 10152-2009, specified in more detail Type B are super
Definition, requirement, experimental method and the inspection rule of audio clinic equipment.In addition, China national food and medicine supervision and management general bureau
Standard YY/T 0937-2014 has been issued, it is specified that the technical requirements and measurement method of ultrasonic imitated NDVI.Based on these marks
Standard, the body mould applied to Type B ultrasonic diagnostic equipment in the industry cycle have in-depth study and mature solution.However, opposite
In the evaluation and test of above-mentioned traditional B ultrasound imaging, insertion type ultrasonic imaging is with working frequency is higher, spatial resolution is higher, detection is deep
Spend the features such as smaller.Therefore, the body mould for being tested for insertion type ultrasonic imaging, it is difficult to directly use above-mentioned existing Type B
The body mould of ultrasonic diagnostic equipment is evaluated and tested.
Summary of the invention
The present invention in view of the above-mentioned prior art situation and complete, its purpose is to provide one kind can validity test be situated between
Enter the body mould of the insertion type ultrasonic imaging test of formula ultrasonic imaging effect.
For this purpose, the present invention provides a kind of body moulds of insertion type ultrasonic imaging test comprising: tissue imitates layer, by
First material composition；Cavity is formed in the tissue and imitates in layer and for receiving insertion type ultrasound catheter；And line target,
It is made of the second material, and the tissue, which is arranged in, in the line target imitates in layer and prolong along the extending direction of the cavity
It stretches, wherein first material is different with the ultrasonic attribute of second material.
In the present invention, tissue imitates and is provided with cavity in layer, and the setting of line target is imitated in layer and along cavity in tissue
Extending direction extend, and tissue is enabled to imitate layer and line target with different ultrasonic attributes, so as to effective as body mould
Simulation ultrasonic imaging test, thus, it is possible to effectively assess the imaging effect of insertion type ultrasonic imaging.
In addition, first material is selected from water, glycerine, agar, aluminium oxide, kills algae in body mould according to the present invention
At least one of amine, silicone resin carbide.Thereby, it is possible to the various structures in effectively simulated human tissue.
In addition, in body mould according to the present invention, optionally, second material be selected from stainless steel, NiTi, cobalt, chromium,
At least one of platinum, gold, tungsten and their alloy.In this case, the second material is significant to the acoustic impedance of ultrasound, thus
Ultrasonic performance can be assessed as ultrasonic reflection line target.
In addition, optionally, second material is selected from nylon, acrylonitrile-butadiene-in body mould according to the present invention
At least one of styrene (ABS), polyurethane, silicon rubber, polyformaldehyde, polyether-ether-ketone.In this case, the second material pair
The acoustic impedance of ultrasound is significant, and thus, it is possible to ultrasonic performance is assessed as ultrasonic reflection line target.
In addition, optionally, the line target has more, and more line targets at least wrap in body mould according to the present invention
Include the first target group for detecting ultrasonic imaging depth.Thereby, it is possible to the depth of ultrasonic imaging is detected by the first target group.
In addition, optionally, the more line targets further include for detecting ultrasonic imaging in body mould according to the present invention
Second target group of geometric position precision.Thereby, it is possible to the geometric position precision of ultrasonic imaging is detected by the second target group.
In addition, optionally, imitating the extension side with the cavity of layer in the tissue in body mould according to the present invention
To on vertical section, each line target of the first target group is in the cavity in the radial direction from the cavity at a distance of different
Distance.In this case, the ultrasonic reaction intensity of the line target of different depth can be simulated, so as to by the first target group come
Detect investigation depth, blind area, azimuthal resolution and the lateral resolution etc. of ultrasonic imaging.
In addition, optionally, imitating the extension side with the cavity of layer in the tissue in body mould according to the present invention
To on vertical section, the line target of the second target group is arranged in a manner of the polygonal region being formed by connecting.In such case
Under, the deformation extent of polygonal region can be simulated, so as to the imaging geometry precision etc. for detecting ultrasonic imaging.
In addition, optionally, each line target of the first target group is along the cavity in body mould according to the present invention
Offset one from another in the radial direction.In this case, each line target of the first target group will not mutually stop each other, thus, it is possible to
Effectively detect the ultrasonic reaction intensity of the line target of different depth.
In addition, optionally, imitating the radial direction along the cavity of layer in the tissue in body mould according to the present invention
On direction, it is formed with the region not stopped by the line target.In this case, ultrasound can be effectively detected in tissue mould
Imitative layer along cavity decaying in the radial direction, so as to by adjusting ultrasonic gain amplifier come obtain preferably ultrasound at
As effect.
In accordance with the invention it is possible to provide a kind of insertion type ultrasonic imaging for capableing of validity test insertion type ultrasonic imaging effect
The body mould of test.
Detailed description of the invention
Fig. 1 is the solid shown involved in embodiments of the present invention for the body mould of insertion type ultrasonic imaging test
Structure chart.
Fig. 2 is to show body mould involved in present embodiment along the schematic diagram in the section in the direction line A-A' of Fig. 1.
Fig. 3 is to show the structural schematic diagram of body mould holder involved in present embodiment.
Fig. 4 is the schematic diagram for showing cavity involved in present embodiment and having different inner diameters section.
Fig. 5 is to show the distribution schematic diagram of the target group of the line target in Fig. 2.
Fig. 6 is to show the partial schematic diagram of the distribution of the line target of the first target group involved in present embodiment.
Fig. 7 is to show the partial schematic diagram of the distribution of the line target of the second target group involved in present embodiment.
Fig. 8 is to show the schematic diagram of ultrasonic attenuation detection zone involved in present embodiment.
Symbol description:
1 ... body mould, 11 ... tissues imitate layer, and 12 ... cavities, 13 ... line targets, 2 ... body mould holders, 21 ... die cavitys, 22 ... lead
Pore, 23 ... threading holes, 131 ... first target groups, 132 ... second target groups, 133 ... attenuation regions.
Specific embodiment
Hereinafter, explaining the preferred embodiment of the present invention in detail with reference to attached drawing.In the following description, for identical
Component assign identical symbol, the repetitive description thereof will be omitted.Scheme in addition, attached drawing is only schematical, the mutual ruler of component
Very little shape of ratio or component etc. can be with actual difference.
Fig. 1 is the solid shown involved in embodiments of the present invention for the body mould of insertion type ultrasonic imaging test
Structure chart.Fig. 2 is to show body mould involved in present embodiment along the schematic diagram in the section in the direction A-A' of Fig. 1.Here,
The position of line A-A' is not particularly limited, such as the section of body mould can be intercepted along the arbitrary point of the extending direction of cavity 12.
In the present embodiment, the body mould (hereinafter sometimes referred to " body mould ") 1 for insertion type ultrasonic imaging test can be with
Layer 11, cavity 12 and line target 13 (as shown in Figure 1) are imitated including tissue.In the body mould 1 involved in present embodiment, mould is organized
Imitative layer 11 can be made of the first material, and cavity 12 can be formed in tissue and imitate in layer 11 and for receiving insertion type ultrasound to lead
Pipe, line target 13 can be made of the second material, and are arranged on tissue and imitated in layer 11 and along the extension side of cavity 12
To extension, the ultrasonic attribute of the first material and the second material can be different.
In the body mould 1 involved in present embodiment, tissue imitates in layer 11 and is provided with cavity 12, and line target 13 is along setting
It imitates in layer 11 in tissue and extends along the extending direction of cavity 12, and enable tissue imitate layer 11 and line target 13 to have not
Same ultrasonic attribute, so as to which as the effective simulation ultrasonic imaging test of body mould, thus, it is possible to effectively assess insertion type
The imaging effect of ultrasonic imaging.
In some instances, the shape of body mould 1 can in a rectangular parallelepiped shape, in such a case, it is possible to by easily existing
Body mould 1 is produced on body mould holder 2.
In the present embodiment, body mould 1 can be only fitted in body mould holder 2.Fig. 3 is shown involved by present embodiment
Body mould holder structural schematic diagram.In some instances, as shown in figure 3, body mould holder 2 may include die cavity 21, guide hole
22 and threading hole 23.Body mould holder 2 shown in Fig. 3 can for example produce the body mould 1 of such as rectangular-shape.
Wherein, the die cavity 21 of body mould holder 2 can be the cavity with opening, imitate layer 11 for accommodating tissue.In addition,
The guide hole 22 of body mould holder 2 can cooperate with the cavity 12 of body mould 1, form the connecting path for for example penetrating through body mould 1.Some
In example, body mould holder 2 only can have guide hole 22 in side, in this case, can be with by the guide hole 22 of the side
Cooperate with the cavity 12 of body mould 1.In addition, threading hole 23 can be used for the line target 13 across simultaneously fixed body mould 1.
In some instances, one end of line target 13 can be fixed on a face of body mould holder 2, line target 13 it is another
It holds on another face for being fixed on body mould holder 2 after threading hole 23.In some instances, line target 13 can be kept tight
The state of opening.Here, line target 13 can be more, indicate for convenience, line target 13 may refer to more line targets.In some examples
In, more line targets include the target being distributed on the section vertical with the extending direction of cavity that tissue imitates layer by predetermined pattern
Group.
In some instances, threading hole 23 can be round.In other examples, threading hole 23 is also possible to ellipse
Shape, rectangle or irregular shape.In some instances, threading hole 23 can also accommodate two or more line targets 13, by
This can facilitate the azimuthal resolution and lateral resolution of test ultrasonic imaging.
Body mould 1 involved in present embodiment can be used for insertion type ultrasonic instrument such as insertion type ultrasound catheter in blood
The measure of merit of intraductal ultrasonography imaging.Specifically, configuring body mould 1 in body mould holder 2, insertion type ultrasound can then be led
Pipe is placed in cavity 12 along the cavity 12 of body mould 1, imitates layer by tissue of the insertion type ultrasound catheter to cavity 12, surrounding
11 and line target 13 carry out ultrasonic imaging, the imaging effect so as to the ultrasonic imaging to insertion type ultrasound catheter assesses.
In the present embodiment, tissue imitates layer 11 and can be made of the first material.In some instances, the first material can
Think the material that there is acoustic impedance to ultrasound.In some instances, the first material can be for water, glycerine or agar and selected from oxygen
Change at least one mixture of aluminium, alkyldimethylbenzylammonium chloride, silicone resin carbide.Thereby, it is possible to each in effectively simulated human tissue
Kind structure.
In some instances, the first material may include water, glycerine, agar, aluminium oxide, alkyldimethylbenzylammonium chloride and silicone resin carbonization
Object.In some instances, in the first material, the mass ratio of glycerine, agar and aluminium oxide can be 10:3:2.Some
In example, in the first material, water, glycerine, agar, aluminium oxide, alkyldimethylbenzylammonium chloride, silicone resin carbide mass ratio can be
160:20:6:4:1:1.In some instances, the water that the first material is included can be with drinking water through the way of distillation, ion exchange
Purified water made from method, hyperfiltration or other suitable methods.Thereby, it is possible to reduce unnecessary impurity to imitate layer to tissue
The influence of 11 physicochemical property or ultrasonic attribute.
In the present embodiment, agar is used in the first material, can be improved the manufacture craft that tissue imitates layer 11, be mentioned
Height tissue imitates the degree of closeness of the ultrasonic attribute of layer 11 and tissue.Specifically, agar at 40 DEG C the following are gel,
And agar can have the ultrasonic attribute close with tissue.
In the present embodiment, glycerine can be used in the first material to increase the mutual combination of each ingredient
Power.Thereby, it is possible to further improve tissue to imitate the physicochemical property of layer 11 and the stability of ultrasonic attribute.
In the present embodiment, aluminium oxide or silicone resin carbide can be used in the first material as ultrasonic attenuation powder
End adjusts the degree of strength of ultrasonic scattering or reflection.In some instances, as the aluminium oxide of ultrasonic attenuation powder or silicon tree
The partial size of the particle of rouge carbide can be 0.3 micron to 3 microns.In such a case, it is possible to which adjusting tissue imitates layer 11
Ultrasonic attribute, thus, it is possible to improve the imaging effect of body mould 1.
In some instances, it can have sterilization algae removal ability using alkyldimethylbenzylammonium chloride in the first material.Thereby, it is possible into one
Step extends the service life that tissue imitates layer 11.
In addition, in some instances, the acoustic impedance of the first material can be 1 × 106kg/(m2S) to 2 × 106kg/
(m2s).In some instances, the acoustic attenuation coefficient slope of the first material can be 0.4 ° of dB/ (cmMHz) to 0.8 ° of dB/
(cm·MHz).In this case, the ultrasonic attribute of the first material can be more nearly human tissue structure, being capable of effective mould
The ultrasonic attribute of the institutional framework of anthropomorphic body such as vascular wall and surrounding institutional framework, thus, it is possible to as detection line target 13
The testing background of ultrasonic reaction.
In the present embodiment, tissue imitates layer 11 and can be formed by the way that the first material to be filled into body mould holder 2.
Specifically, the first material can be filled into the die cavity 21 of body mould holder 2, become block-like group after the first material solidification
It knits and imitates layer 11.In some instances, the shape that tissue imitates layer 11 can be cuboid.The size of the cuboid is, for example, to grow
50mm, high 45mm, thickness (extending direction of cavity 12) 45mm.But present embodiment is without being limited thereto, and the first material can be with other
The volume of size or the shape except cuboid imitate layer 11, such as cylindrical body, prism or other irregular to constitute tissue
Shape etc..
In some instances, when preparing tissue imitation layer 11, the first material can be heated to 90 DEG C of left sides while stirring
The right side is kept for about 1 hour, is then naturally cooling to 45 DEG C or so, is filled into die cavity 21 condensation molding naturally.In such case
Under, homogeneity of ingredients and structural strength that tissue imitates layer 11 can be improved, thus, it is possible to improve the recycling rate of waterused of body mould 1.
In the present embodiment, tissue imitates layer 11 and can be stored in the sealing container containing body mould Precerving liquid, and protects
Hold 10 DEG C to 35 DEG C of storage temperature.In some instances, body mould Precerving liquid can be the mixture of purified water and silicone oil.At this
In the case of kind, tissue imitates the physicochemical property of layer 11 and ultrasonic attribute is maintained, and thus, it is possible to increase tissue to imitate layer 11
It reuses number, extend the service life that tissue imitates layer 11.
In the present embodiment, cavity 12 can be set imitates in layer 11 in tissue.Cavity 12 can penetrate through tissue imitation
Layer 11.Thereby, it is possible to effectively utilize the cavity 12 in tissue imitation layer 11 to simulate such as the blood vessel of tissue.
In addition, in some instances, cavity 12, which can be set, imitates the geometric center of layer 11 in tissue.In such case
Under, it can be imitated in layer 11 in tissue and arrange more p-wire targets 13 around cavity 12, be conducive to improve tissue imitation layer
11 utilization rate.
In some instances, cavity 12 linearly can imitate layer 11 through entire tissue.In this case, cavity 12
Space can be provided to the insertion of insertion type ultrasound catheter, rotation, extraction, thus, it is possible to allow ultrasound catheter test to line target 13 at
As effect.
In some instances, shape of the cavity 12 on the section perpendicular to its extending direction can be circular hole (such as Fig. 2
It is shown).In some instances, the internal diameter of circular hole can be less than or equal to 3mm.But present embodiment is without being limited thereto, shows some
In example, shape of the cavity 12 on the section perpendicular to its extending direction can be other shapes, such as rectangular-shaped, polygon shape
Shape etc..
In some instances, the inner wall that cavity 12 is formed in tissue imitation layer 11 can be smooth and fine and close.At this
In the case of kind, when carrying out ultrasonic imaging test using insertion type ultrasound catheter, insertion type ultrasound catheter can be reduced in cavity
Injury tissue imitates layer 11 when the movement of 12 the insides, and thus, it is possible to improve the reuse number of body mould 1.
Fig. 4 is the schematic diagram for showing cavity involved in present embodiment and having different inner diameters section.
In some instances, cavity 12 can be divided into the section of multiple and different internal diameters.For example, cavity 12 can be divided into cavity
12a, cavity 12b and cavity 12c (referring to fig. 4).That is, cavity 12a, cavity 12b and cavity 12c may be constructed cavity 12.?
In the example of Fig. 4, the internal diameter d1 of cavity 12a is less than the internal diameter d2 of cavity 12b, and the internal diameter d2 of cavity 12b is interior less than cavity 12c
Diameter d3.In this case, the effect of different ultrasonic imagings can be tested according to the section of the different inner diameters of cavity 12.
In some instances, the body that layer is imitated for coupling ultrasonic conduit and tissue can be filled toward cavity 12 before testing
Mould Precerving liquid.In some instances, body mould Precerving liquid can be the mixture of purified water and silicone oil.In this case, a side
Face can reduce the remaining air of cavity 12 when ultrasound catheter is inserted into when testing ultrasonic imaging, on the other hand can be as ultrasound
Ultrasonic transducer and tissue in conduit imitate the coupling liquid between layer 11, and thus, it is possible to reduce false failure rate, improve testing efficiency.
In some instances, it when making the cavity 12 in tissue imitation layer 11, can be inserted with a such as columnar mould
Into body mould holder 2 guide hole 22 and remain stationary, then the first material is filled into the die cavity 21 of body mould holder 2 and is condensed into
Type extracts the columnar mould later, and thereby, it is possible to obtain cavity 12.In other examples, cavity 12 can be not through entire
Tissue imitates layer 11.Specifically, imitating in layer 11 in tissue, cavity 12 can imitate the side in layer 11 from tissue and be deep into
Tissue imitates in layer 11 but imitates layer 11 not through tissue.
In other examples, the extending direction of cavity 12 can not also be straight line.For example, cavity 12 can be along curved
Bent curve is formed in tissue and imitates in layer 11.In such manner, it is possible to the more closely real case of simulated blood vessel within the organization.
In the present embodiment, line target 13 can be made of the second material.In some instances, as described above, the first material
The ultrasonic attribute of material and the second material can be different.In some instances, the acoustic impedance of the first material can be less than the second material
Acoustic impedance.
In some instances, line target 13 can have certain thickness.For example, the diameter of line target 13 can be 1 micron to 50
Micron.In some instances, shape of the line target 13 on the section perpendicular to its extending direction can be round.
In some instances, constitute line target 13 the second material can selected from stainless steel, NiTi, cobalt, chromium, platinum, gold, tungsten and
At least one of their alloy.In some instances, line target 13 can be the tungsten wire that diameter is 1 to 50 micron.
In other examples, the second material can be with nylon, acrylonitrile-butadiene-styrene (ABS) (ABS), polyurethane, silicon rubber
At least one of glue, polyformaldehyde, polyether-ether-ketone.In some instances, it is 20 to 30 microns that the second material, which can be diameter,
Nylon yarn.
In some instances, the acoustic impedance of the second material can be 80 × 106kg/(m2S) to 110 × 106kg/(m2s)。
In this case, the acoustic impedance of the second material is greater than the acoustic impedance of the first material, and thus, it is possible to ultrasonic beam is being organized
Imitate the position that line target 13 can be recognized when propagating in layer 11.
In the present embodiment, reflection can be generated by such as being encountered by the ultrasonic beam that ultrasonic transducer issues on line target 13,
After the ultrasonic wave reflected is received by the ultrasonic transducer, it is for example white on the image of ultrasonic imaging to be shown as different colours
Point, thus, it is possible to identify the reflection condition of ultrasonic beam.
In the present embodiment, the part that line target 13 is embedded in that tissue imitates in layer 11 can be linearly.Show some
In example, centerline parallel that line target 13 can substantially with cavity 12.For example, line target 13 can when cavity 12 is substantially linear
To be linear along 12 extending direction of cavity substantially stroke.In addition, for example, cavity 12 be substantially curve-like when, line target 13
Curve-like can be generally formed into along 12 extending direction of cavity.In this case, the distance of line target 13 and cavity 12 is in chamber
Variation on the extending direction in road 12 can be improved, and thus, it is possible to reduce the depth of insertion type ultrasound catheter insertion cavity 12
Change the influence to ultrasonic imaging effect detection.
In the present embodiment, line target 13 can be fixed on the threading hole on body mould holder 2.Specifically, line target 13 can
With two coaxial threading holes 23 on body mould holder 2 and its both ends can be fixed on body mould holder 2.Some
In example, line target 13 can keep nervous state.In this case, the position of line target 13 is threaded the restriction of hole 23, thus
The position precision of line target 13 can be improved, reuse number to improve the measuring stability of body mould 1 and increase body mould 1.
In some instances, when making body mould 1 involved in present embodiment, line target 13 can be fixed on body mould branch
On frame 2 and nervous (such as exceptionally straight) state is kept, the first material is then perfused and condenses molding into the die cavity 21 of body mould holder 2.
In this case, line target 13 is closely embedded among the first material, and thus, it is possible to reduce between line target 13 and the first material
Gap and reduce false failure rate.
Fig. 5 is to show the distribution schematic diagram of the target group of the line target in Fig. 2.In Fig. 5, in order to help to illustrate, increase
The imaginary line of target group's range.Fig. 6 is show the distribution of the line target of the first target group involved in present embodiment partially schematic
Figure.In Fig. 6, in order to help to illustrate, the imaginary line of concentric circles and the imaginary line of line target and the line at cavity center are increased.
In the present embodiment, the quantity of line target 13 can have more.In the present embodiment, in more line targets 13,
The first target group 131 (as shown in Figure 5) for detecting ultrasonic imaging depth can at least be marked off.In some instances, first
Target group 131 can have such as 5 to 10 line targets 13.
In some instances, on the section vertical with the extending direction of cavity 12 that tissue imitates layer 11, the first target group
131 each line target 13 cavity 12 in the radial direction with cavity 12 at different distances, also, the first target group's 131 is each
Root (each) line target 13 is in offseting one from another in the radial direction (referring to Fig. 6) along cavity 12.
In some instances, the second target group 132 imitates the section vertical with the extending direction of cavity 12 of layer 11 in tissue
On can according to by predetermined pattern P1 be distributed.For example, predetermined pattern P1 for example can be the song that each line target 13 is formed by connecting
Line.
In the example of fig. 6, the line target 13 of the first target group 131 has 9.Can be different with a distance from 12 central point o of cavity,
Such as each line target 13 arrive respectively 12 central point o of cavity distance be respectively 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm,
10mm。
In some instances, the angle of the line at 12 center of adjacent line target 13 and cavity of the first target group 131 can be small
In 90 degree.For example, the company for shown in Fig. 6, using 12 central point o of cavity as the center of circle, between line target 1311 (13) and central point o
Line L1 is formed with angle theta with the line L2 between line target 1312 (13) and central point o.In some instances, angle theta can be
12°。
In other examples, the line of each adjacent line target 13 and 12 center of cavity can be at the same angle with shape.
In this case, will not be stopped by closer line target 13 from the farther away line target 13 of cavity 12, insertion type ultrasound catheter can be examined
The ultrasonic reaction intensity for measuring the line target 13 of different depth, thus, it is possible to detect the investigation depth of insertion type ultrasound catheter, blind area,
Azimuthal resolution and lateral resolution etc..
In some instances, when ultrasonic imaging is tested, the ultrasonic transducer of ultrasound catheter can be directed at the first target group
131, that root target line 13 most nearby that image can be resolved is found, the distance between the line target 13 and 12 center of cavity are recorded.
Thereby, it is possible to assess the blind area of the ultrasound catheter.
In some instances, when ultrasonic imaging is tested, the ultrasonic transducer of ultrasound catheter can be directed at the first target group
131, that root target line 13 for the farthest that image can be resolved is found, the distance between the line target 13 and 12 center of cavity are recorded.
Thereby, it is possible to assess the investigation depth of the ultrasound catheter.
In some instances, when ultrasonic imaging is tested, can 13 side of certain root line target of the first target group 131 along
Another single line target 13 is placed on radial direction, and both can be adjusted between the two under the premise of ultrasonic imaging identification in holding
Away from the adjustable minimum range of both records.Thereby, it is possible to assess the ultrasound catheter in the azimuthal resolution of the depth.
In some instances, when ultrasonic imaging is tested, can 13 side of certain root line target of the first target group 131 along
Another single line target 13 is placed on the direction vertical with radial direction, and both can adjust two under the premise of ultrasonic imaging identification in holding
Person's spacing, the adjustable minimum range of both records.Thereby, it is possible to assess the ultrasound catheter in the lateral resolution of the depth.
In some instances, the meter of the indexs such as the investigation depth of ultrasonic imaging, blind area, azimuthal resolution and lateral resolution
Calculation method can be with reference to the standard GB/T 10152-2009 of Standardization Administration of China's publication.
Fig. 7 is to show the partial schematic diagram of the distribution of the line target of the second target group involved in present embodiment.In Fig. 7
In, in order to help to illustrate, increase the imaginary line of the line between the imaginary line and line target and line target of concentric circles.
In the present embodiment, more line targets 13 further include the second target for detecting the geometric position precision of ultrasonic imaging
132 (as shown in Figure 7) of group.In some instances, the second target group 132 imitates the vertical with the extending direction of cavity 12 of layer 11 in tissue
It can be distributed according to by predetermined pattern P2 on straight section.Predetermined pattern P2 for example can each line target 13 be formed by connecting
Polygonal region (is described later on).
In some instances, the second target group 132 can have 4 to 10 line targets 13.
In some instances, on the section vertical with the extending direction of cavity 12 that tissue imitates layer 11, the second target group
132 each line target 13 is arranged in a manner of the polygonal region being formed by connecting.In this case, it is tested in ultrasonic imaging
When, insertion type ultrasound catheter can detecte the deformation extent of the polygon, thus, it is possible to detect insertion type ultrasound catheter at
As geometric accuracy, including but not limited to longitudinal geometric position precision, lateral geometric position precision and piecture geometry fault.
In some instances, the distribution of each line target 13 of the second target group 132 is formed by polygon (each line target of connection
13 point and the imaginary polygon formed) it can be at least one of rectangle, trapezoidal, pentagon.
In some instances, the distribution of the line target 13 of the second target group 132 be formed by pattern may include it is two or more
Different polygon with a distance from central point o from cavity 12, thus, it is possible to detect insertion type ultrasound catheter in the imaging of different depth
Geometric accuracy.
In some instances, the distribution of the line target 13 of the second target group 132, which is formed by pattern, may include two from cavity
12 central point o is apart from different isosceles trapezoids.In some instances, the distribution of the line target 13 of the second target group 132 is formed by
Pattern may include two isosceles trapezoids, wherein endpoint (the line target on the bottom edge (upper bottom edge or bottom) of two isosceles trapezoids
13) identical to the distance of 12 central point o of cavity.In other examples, the distribution of the second target group 132 is formed by pattern can be with
Two isosceles trapezoids for including, wherein the distance in two isosceles trapezoids at a distance of two nearest bottom edges can be 2mm extremely
5mm。
In some instances, the line target 13 of the second target group 132 is shown as the point of white on the image of ultrasonic imaging.
In some instances, trapezoidal vertex is formed by into cavity 12 with the distribution of the line target 13 of the second target group 132
The distance of heart point o be reference, calculate ultrasonic imaging in corresponding trapezoidal vertex to 12 center of cavity distance degree of variation,
Longitudinal geometric position precision of the available trapezoidal vertex position.
In some instances, being formed by trapezoidal bottom edge side length with the distribution of the line target 13 of the second target group 132 is reference,
Calculate the degree of variation of corresponding trapezoidal bottom edge side length in imaging, the cross of the available trapezoidal bottom edge vertex position
To geometric position precision.
In some instances, trapezoidal four sides length and two are formed by with the distribution of the line target 13 of the second target group 132
Diagonal line is reference, calculates corresponding trapezoidal four sides length and two cornerwise degrees of variation in imaging, takes variation most
Big value, the available trapezoidal piecture geometry fault.
In some instances, the calculation method of longitudinal geometric position precision of ultrasonic imaging and lateral geometric position precision can
With the standard GB/T 10152-2009 with reference to Standardization Administration of China's publication.
Fig. 8 is to show the schematic diagram of ultrasonic attenuation detection zone involved in present embodiment.In fig. 8, in order to help
The distribution characteristics for illustrating ultrasonic attenuation detection zone is helped, the imaginary line in fan-shaped sideline is increased.
In the present embodiment, tissue imitate layer 11 along cavity 12 in the radial direction, could be formed with not by
Region, that is, attenuation region 133 (as shown in Figure 8) that the line target 13 stops.In this case, when ultrasonic imaging is tested, it is situated between
Entering formula ultrasound catheter can detecte ultrasound in tissue imitation layer 11 along the decaying of depth direction, and thus, it is possible to adjust ultrasound to put
Large gain obtains preferable imaging effect.
In some instances, ultrasonic gain amplifier is adjusted, larger gain is remotely being used apart from cavity 12, apart from chamber
Road 12 more nearby uses smaller gain, can obtain the consistent ultrasonic imaging effect of brightness of image.Thereby, it is possible to reduce because of image
Probability that is too dark and missing the case where identifying lesion or being lesion non-lesion wrong identification due to image is too bright.
In some instances, attenuation region 133 can be the fan-shaped region centered on the central point o of cavity 12.One
In a little examples, attenuation region 133 can be 90 degree to 150 degree of sector.
In addition, in some instances, by adjusting the position of line target 13, or the first target group 131 of adjustment and the second target group
132 mutual alignment relation can make the distribution of line target 13 become intensive, in this case, can increase attenuation region 133
The range of fan-shaped region.Thereby, it is possible to improve the efficiency for adjusting ultrasonic gain amplifier.
Although above combine drawings and embodiments the present invention is illustrated, it will be appreciated that on state
It is bright that the invention is not limited in any way.Those skilled in the art are without departing from the true spirit and scope of the present invention
It can according to need and the present invention is deformed and is changed, these deformations and variation are within the scope of the present invention.
Claims (10)
1. a kind of body mould for insertion type ultrasonic imaging test, it is characterised in that:
Include:
Tissue imitates layer, is made of the first material；
Cavity is formed in the tissue and imitates in layer and for receiving insertion type ultrasound catheter；And
Line target is made of the second material, and the line target is arranged in the tissue imitation layer and prolonging along the cavity
Length direction extends,
Wherein, first material is different with the ultrasonic attribute of second material.
2. body mould as described in claim 1, it is characterised in that:
First material is selected from least one of water, glycerine, agar, aluminium oxide, alkyldimethylbenzylammonium chloride, silicone resin carbide.
3. body mould as described in claim 1, it is characterised in that:
Second material is selected from least one of stainless steel, NiTi, cobalt, chromium, platinum, gold, tungsten and their alloy.
4. body mould as described in claim 1, it is characterised in that:
Second material is selected from nylon, acrylonitrile-butadiene-styrene (ABS) (ABS), polyurethane, silicon rubber, polyformaldehyde, polyethers
At least one of ether ketone.
5. body mould as described in claim 1, it is characterised in that:
The line target has more, and more line targets include at least the first target group for detecting ultrasonic imaging depth.
6. body mould as claimed in claim 5, it is characterised in that:
The more line targets further include the second target group for detecting the geometric position precision of ultrasonic imaging.
7. body mould as claimed in claim 5, it is characterised in that:
On the section vertical with the extending direction of the cavity that the tissue imitates layer, each line target of the first target group
The cavity in the radial direction with the cavity at different distances.
8. body mould as claimed in claim 6, it is characterised in that:
On the section vertical with the extending direction of the cavity that the tissue imitates layer, each line target of the second target group
It is arranged in a manner of the polygonal region being formed by connecting.
9. body mould as claimed in claim 7, it is characterised in that:
Each line target of the first target group is in offseting one from another in the radial direction along the cavity.
10. body mould as claimed in claim 5, it is characterised in that:
It is described tissue imitate layer along the cavity in the radial direction, be formed with not by the line target stop region.
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| CN201811647654.8A CN109512459B (en) | 2018-12-30 | 2018-12-30 | Phantom for intravascular interventional ultrasound imaging testing |
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| CN112450972A (en) * | 2020-11-19 | 2021-03-09 | 深圳大学 | Clamp device for imaging test of intravascular ultrasonic probe |
| CN113786217A (en) * | 2021-09-29 | 2021-12-14 | 天津恒宇医疗科技有限公司 | Testing tool for penetration depth of intravascular ultrasonic equipment |
| CN115836876A (en) * | 2022-12-12 | 2023-03-24 | 声索生物科技(上海)有限公司 | Geometric distortion detection device and method for ultrasonic imaging equipment |
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| CN109512459B (en) | 2022-02-08 |
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Address after: Area E, 3 / F, building 3, Tingwei Industrial Park, No.6 Liufang Road, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Beixin Life Technology Co.,Ltd. Address before: Area E, 3 / F, building 3, Tingwei Industrial Park, No.6 Liufang Road, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Applicant before: INSIGHT LIFETECH Co.,Ltd. (SHENZHEN ) |
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