CN212913235U - Invasive ultrasonic equipment imaging performance detection device - Google Patents
Invasive ultrasonic equipment imaging performance detection device Download PDFInfo
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- CN212913235U CN212913235U CN202020651257.4U CN202020651257U CN212913235U CN 212913235 U CN212913235 U CN 212913235U CN 202020651257 U CN202020651257 U CN 202020651257U CN 212913235 U CN212913235 U CN 212913235U
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Abstract
The utility model discloses an invasive ultrasonic equipment imaging performance detection device, which comprises a phantom shell, a support guard plate (9), a detection cavity (6), a plurality of target lines (4), a plurality of simulated focuses (5) and a background tissue-imitating material (16); the phantom shell is of a cuboid structure and is formed by fixedly connecting an upper panel (2), a lower panel (3), two side panels (10), a bottom panel (11) and a front panel, and the detection cavity (6) is a cylindrical cavity with one open end and penetrates between the opposite surfaces of the upper panel (2) and the lower panel (3); a closed space is formed between the phantom shell and the outer wall of the detection cavity (6), and a background tissue imitating material (16) is filled in the closed space; the bottom panel (11) is provided with a plurality of inlets filled with background tissue imitating materials (16), the target lines (4) and the simulated focuses (5) are embedded in the background tissue imitating materials (16), and each target line vertically penetrates through the lower panel (3) from the upper panel (2).
Description
Technical Field
The utility model belongs to the field of medical instrument quality testing, concretely relates to invasive ultrasonic equipment imaging performance detection device.
Background
B-ultrasonic and X-CT, magnetic resonance imaging, nuclear medicine imaging are the four most practical diagnostic imaging techniques in the present day, and B-ultrasonic is the top of the four in terms of popularity.
In clinic, doctors make diagnosis according to the information provided by the ultrasonic scanning sonogram, so the image quality is considered as the primary factor for measuring the quality of the B-ultrasonic product and judging whether the B-ultrasonic works normally or not. According to international consensus, the technical indicators (i.e. performance) characterizing the image quality include dead zone, depth of detection, axial (longitudinal) resolution, lateral (transverse) resolution, pitch resolution, contrast resolution, and geometric errors of display and measurement, etc. The material technical means which can make objective, rapid, vivid and quantitative evaluation on the performance and quality of the B ultrasonic equipment in all links of development, production, sale, use, maintenance and legal management (quality supervision and inspection, metrological verification, import and export commodity inspection) of the B ultrasonic equipment only has an imitated tissue ultrasonic phantom. The ultrasonic Tissue simulating Phantom is a human physical model which simulates soft Tissue in the aspect of ultrasonic propagation characteristics and is a passive testing device which is composed of an ultrasonic background Tissue-simulating Material (TM Material for short) and a plurality of testing targets embedded in the Material, an acoustic window, a shell, an indicating decoration panel and the like. The tissue-imitated ultrasonic body model is specified equipment for executing national technical standards and metrological verification procedures, and has the characteristics of a standard device.
To date, only a few american companies and the chinese academy of sciences acoustic research institute have been able to make commercial ultrasound phantoms around the world. Related ultrasound phantom research and manufacturing companies in the United states include CIRS, Gamma-RMI, and ATS Laboratories, Inc. in the United states. All of the meters used for quality testing are periodically certified or calibrated as required by the medical instrument manufacturing industry and professional quality testing agencies quality systems. The tissue-imitated ultrasonic phantom belongs to a tissue substitute and is not a measuring instrument, a standard device in the sense of metrology does not exist, and the metrological verification or calibration cannot be implemented, but a rule of regular detection and comparison is formed from the end of the last century because the quality of ultrasonic diagnostic equipment is directly influenced, and the rule is accepted and followed by related fields. Invasive ultrasonic imaging equipment serving as a medical instrument comprises intravascular ultrasonic imaging, vaginal ultrasonic imaging, rectal ultrasonic imaging, alimentary tract ultrasonic imaging and the like, and is supposed to be subjected to imaging performance and quality inspection by using a matched tissue phantom.
The existing invasive device detecting device has a plurality of problems, and the sound transmission medium used in the ATSLAB instruments products is polyurethane rubber which seriously violates the international standard IEC61685 and the Chinese medical industry standard YY/T0458 in both sound velocity and sound attenuation characteristics from the used tissue-imitating material, does not belong to the tissue-imitating material in practice, and will produce distorted results when used for quality detection. The tissue imitating material in the American CIRS phantom is produced and filled once, liquid components in the tissue imitating material are evaporated and lost from a shell gap and an acoustic window along with time, performance parameters of the tissue imitating material are changed greatly, and finally the phantom is invalid and cannot be used, so the service life of the phantom is greatly influenced. And the target line and focus arrangement of other phantom devices cannot ensure the detection of the blind area detection depth, the axial (longitudinal) resolution, the lateral (transverse) resolution, the geometric errors of display and measurement and the focus resolution of the invasive ultrasonic imaging device.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an invasive ultrasonic equipment imaging performance detection device, the device is for being exclusively used in the supersound imaging device of investigation intracavity, or the supersound passive means of imaging parameter such as intervention formula supersound imaging device resolving power and focus discovery ability.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an invasive ultrasonic equipment imaging performance detection device comprises a phantom housing, a supporting plate, a detection cavity, a plurality of target lines, a plurality of simulated lesions and a background tissue-imitating material; the phantom shell is of a cuboid structure and is formed by fixedly connecting an upper panel, a lower panel, two side panels, a bottom panel and a front panel, and the detection cavity is a cylindrical cavity which penetrates through a space between the opposite surfaces of the upper panel and the lower panel and is provided with an opening at one end; a closed space is formed between the phantom shell and the outer wall of the detection cavity, and a background tissue imitating material is filled in the closed space; the bottom panel is provided with a plurality of inlets filled with background tissue-imitating materials and is fixedly connected with the supporting plate; the target lines and the simulated lesions are embedded in a background tissue-like material, and each target line vertically penetrates from the upper panel to the lower panel.
As an improvement of the device, the outer wall of the detection cavity is made of a background tissue-imitating material, and the interior of the detection cavity is filled with an aqueous maintenance liquid; the detection chamber is sealed by a detection chamber plug.
As an improvement of the device, the front panel is formed by hermetically connecting a water tank frame and an acoustic window, and the acoustic window is a polyester film with the thickness of 50-100 mu m.
As an improvement of the device, the phantom housing and the supporting plate are made of hard structural plastics.
As an improvement of the device, the inlet on the bottom panel is a round hole arranged at the edge of the bottom panel, and is blocked by a blocking rubber, and the blocking rubber is a vacuum rubber.
As an improvement of the device, the background tissue-imitating material is a water-based polymer gel-based composite material, the background tissue-imitating material is maintained by a maintenance liquid, and the maintenance liquid is injected by a plugging rubber.
As an improvement of the device, a plurality of target line openings are formed in the positions corresponding to the upper panel and the lower panel in the vertical direction and used for positioning the target lines; two ends of the target line are respectively fixed on the outer side surfaces of the upper panel and the lower panel, and each target line has the same tension so that the nylon target line is uniformly tightened; the target line material is a nylon line with the diameter of 0.1mm-0.5 mm.
As an improvement of the above device, the plurality of target lines include a blind zone target group, a circumferential geometric position precision target group, a detection depth target group, an axial resolution target group, a lateral resolution target group and a fine lateral resolution target group;
the space between the detection cavity and any one side panel is the upper half part, and the space between the detection cavity and the other side panel is the lower half part; the circumferential geometric position precision target group is positioned on the upper half part; the detection depth target group, the axial resolution target group, the lateral resolution target group and the fine lateral resolution target group are positioned on the lower half part;
the blind area target group comprises 8 target lines, one target line is arranged at intervals of 45 degrees in the anticlockwise direction by taking the detection cavity as a reference, and the distances between each target line and the outer wall of the detection cavity are respectively 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm and 9 mm;
the circumferential geometric position precision target group comprises two groups of target lines, and the first group of target lines comprises 9 target lines which are distributed in a semicircular shape; the arc length between two adjacent target lines is 10mm, and the arc length is 20mmm of cylindrical arc away from the upper half part of the detection cavity; the second group of target lines comprises 15 target points which are distributed in a semicircular shape; is positioned on a cylindrical arc of 40mmm away from the upper half part of the outer wall of the detection cavity;
the detection depth target group comprises 6 target lines which are respectively positioned at positions 10mm, 20mm, 30mm, 40mm, 50mm and 60mm below the outer wall of the detection cavity;
the axial resolution target group comprises three groups of target lines, the central target lines of the three groups of target lines are respectively the target lines at the positions of 10mm, 30mm and 50mm in the detection depth target group, each group of target lines comprises 5 target lines, the distances between the central lines of two adjacent target lines in the same group of target groups are respectively 3mm, 2mm, 1mm and 0.5mm, and the distance intervals between the two adjacent target lines in the circumferential direction are respectively 1 mm;
the lateral resolution target group comprises three groups of target lines which are respectively positioned on cylindrical arcs of 10mm, 30mm and 50mm of the lower edge of the outer wall of the detection cavity, and each group of target lines comprises 5 target lines; the arc length distances of two adjacent target lines are 4mm, 3mm, 2mm and 1mm in sequence;
the fine lateral resolution target group comprises 3 groups of target lines which are respectively positioned on cylindrical arcs which are 10mm, 30mm and 50mm away from the outer wall of the detection cavity, and the centers of the 3 groups of target groups and the center of the detection cavity are positioned on the same diameter line; each group of target lines comprises two target lines, and the straight line distance between the two target lines is 0.5 mm.
As an improvement of the device, the simulated focus is a cylindrical structure, the cylindrical axis of the simulated focus is parallel to the target line, and two ends of the simulated focus are respectively connected with the inner side surfaces of the upper panel and the lower panel; the simulated lesions comprise a first cystic simulated lesion closest to the detection cavity, a second cystic simulated lesion, a tumor simulated lesion, a cystic and calculi simulated lesion and a third cystic simulated lesion farthest from the detection cavity; the simulated focuses are distributed on the cylindrical arcs with different radiuses from the central axis of the detection cavity.
The utility model has the advantages that:
the utility model discloses to invasive ultrasonic imaging equipment, these equipment include but not limited to the intravascular ultrasound formation of image, vaginal ultrasound formation of image, rectum ultrasonic imaging, alimentary canal ultrasonic imaging etc, a device that detects is carried out its imaging performance is proposed, can be to its detection depth, circumference formation of image homogeneity, axial and horizontal resolution, the blind area, side direction geometric position precision, axial geometric position precision detects through setting up corresponding target crowd, and set up cystic focus in the imitative tissue material of background, the stone class focus, the intracavity imaging equipment is surveyed to the resolving power of corresponding focus to tumor class focus.
Drawings
Fig. 1 is a side external view of the invasive ultrasound device imaging performance detecting apparatus of the present invention;
fig. 2 is an internal side view of the imaging performance testing apparatus of the invasive ultrasound device of the present invention;
fig. 3 is a front cross-sectional view of the imaging performance testing apparatus of the invasive ultrasonic apparatus of the present invention;
fig. 4 is a front side sectional view of the imaging performance testing apparatus of the invasive ultrasonic device of the present invention;
fig. 5 is a schematic view of the distribution of the target line and the simulated focus of the invasive ultrasonic equipment imaging performance detection device of the present invention;
fig. 6 is a schematic diagram of the invasive ultrasonic apparatus imaging performance detecting apparatus of the present invention using an invasive ultrasonic probe to perform performance detection.
Reference symbols of the drawings
1. Tissue phantom 2, upper panel 3 and lower panel
4. Target line 5, simulated focus 6 and detection cavity
7. Sound window 8, basin frame 9, supporting plate
10. Side panel 11, bottom panel 12, fixing bolt
13. Round hole 14, plugging rubber 15, side panel antiskid groove
16. Background tissue-imitating material 17, invasive ultrasonic probe
18. Invasive ultrasonic probe tip transducer 19, invasive ultrasonic probe catheter
20. Aqueous maintenance liquid 21 and detection cavity plug
41. Circumferential blind zone target group 42 and circumferential geometric position precision target group
43. Lateral resolution target group 44 and axial resolution target group
45. Probe depth target group 46, fine lateral resolution target group
51. The first cystic simulated lesion 52 and the second cystic simulated lesion
53. Third cystic simulated lesion 54, tumor simulated lesion
55. Cystic and calculus simulated focus
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings.
As shown in figure 1, the utility model provides an invasive ultrasonic equipment imaging performance detection device, the device be imitative Tissue phantom 1, for the cuboid structure, mainly by the phantom shell, survey chamber 6, target line 4, simulate focus 5 and the imitative Tissue Material 16 of background (TMM) is constituteed. The phantom housing is formed by fixing an upper panel 2, a lower panel 3, two side panels 10, a front panel and a bottom panel 11, and is made of hard structural plastic, preferably organic glass (PMMA, chemical name of polymethyl methacrylate), ABS (chemical name of acrylonitrile-butadiene-styrene polymer plastic) or polyvinyl chloride material. The upper panel 2 and the lower panel 3 form the upper and lower surfaces of the hexahedral housing, and the internal closed space is filled with a background-simulating Tissue Material 16 (TM). The front panel can be a solid plate, preferably, the front panel can be formed by hermetically adhering a water tank frame 8 and an acoustic window 7, and the acoustic window 7 is made of a polyester film material with the thickness of 50-100 μm and can be used as a window for observing the internal condition of the shell.
As shown in fig. 2, a plurality of target line openings are formed at corresponding vertical positions of the upper panel 2 and the lower panel 3 for positioning the target lines 4, and the target lines having the same measurement purpose are collectively called a target group. The target line material is the nylon wire of diameter 0.1mm-0.5mm, and each target line all runs through to lower panel 3 from upper panel 2 is perpendicular, and the outside one side of upper panel and lower panel is fixed respectively at the target line both ends, and every target line has the same pulling force so that the nylon target line is evenly tightened. The target line position and the size of the hole are machined by a precision numerical control machine tool so as to ensure the precision of the positioning and the spacing of the hole. The side panel is used as a part of the phantom shell, and the inner side surface of the side panel is provided with a side panel anti-skidding groove 15 which is a concave notch machined on the inner side surface of the side panel.
As shown in FIGS. 3 and 4, the bottom panel 11 has a plurality of circular holes 13 formed at its edge for filling with the background tissue-like material 16. The round hole 13 is sealed by a sealing rubber 14 with excellent elasticity, the function of the round hole is used as an injection and suction inlet when the background tissue-imitating material is maintained, and the sealing rubber 14 is made of a vacuum rubber. The bottom panel 11 of the phantom housing is fixedly connected with the supporting plate 9 through fixing bolts 12 near the corners of the bottom panel, the fixing devices are countersunk holes machined in the corresponding positions of the bottom panel 11 and the supporting plate 9, and the fixing bolts 12 are connected and fixed. The support plate 9 plays a role in supporting and keeping the phantom steady for the tissue-mimicking phantom.
The background tissue-imitating material 16 is a material for imitating acoustic parameters of human soft tissues, the material is a water-based polymer gel matrix composite material, the sound velocity of the ultrasonic tissue-imitating material (TMM) is (1540 +/-10) m/s, the slope of the acoustic attenuation coefficient is (0.70 +/-0.05) dB/(cm & MHz), and the parameters of the background tissue-imitating material are values measured under the condition that the temperature is [ (23 +/-3) DEG C ].
The background tissue-imitating material 16 is a core part of the ultrasonic tissue-imitating phantom, and the functional failure is caused by the variation of the composition, the state and the acoustic characteristics of the core part, the tissue-imitating material of the ultrasonic tissue-imitating phantom has maintainability, liquid contained in the tissue-imitating material can be evaporated and lost through gaps of a shell of the phantom, the background tissue-imitating material can lose water and shrink after the phantom is used for a long time, and the phantom can be completely failed and cannot be recovered under the condition of serious water loss. The background tissue-imitating material can be maintained daily by using an aqueous maintenance liquid 20, and the aqueous maintenance liquid can be injected by using an injection needle through the plugging rubber 14 at the bottom; the aqueous maintenance liquid is dedicated to the background textured material. The daily maintenance period is related to the temperature and humidity environment of the phantom. The service life of the phantom can be greatly prolonged by daily supplementing the water-based maintenance liquid 20 for maintenance.
The detection chamber 6 is a cylindrical cavity which penetrates between the inner sides of the upper panel 2 and the lower panel 3 and is open at one end. The wall of the detection cavity 6 is a background tissue-imitated material 16, which is a cavity through which the invasive ultrasonic probe enters and exits, the interior of which is filled with an aqueous maintenance liquid 20, which is used as a coupling medium between the ultrasonic probe and a phantom material, and the top of which is covered with a detection cavity plug 21 made of rubber for sealing the detection cavity 6.
The target line 4 is embedded in the background imitation tissue material 16, and two ends of the target line are respectively fixed on the upper panel 2 and the lower panel 3. The target line is divided into different target groups according to different purposes, including a blind zone target group 41, a circumferential geometric position precision target group 42, a detection depth target group 45, an axial resolution target group 44, a lateral resolution target group 43 and a fine lateral resolution target group 46; the space between the detection cavity 6 and any one side panel 11 is the upper half part, and the space between the detection cavity and the other side panel 11 is the lower half part; the circumferential geometric position precision target group 42 is positioned at the upper half part; the detection depth target group 45, the axial resolution target group 44, the lateral resolution target group 43 and the fine lateral resolution target group 46 are positioned on the lower half part; as shown in fig. 5. The target lines of each target group are laid out with reference to the detection chamber 6.
The blind zone target group 41 comprises 8 target lines, one target line is arranged at intervals of 45 degrees in the anticlockwise direction by taking the detection cavity 6 as a reference, and the distances between each target line and the outer wall of the detection cavity 6 are respectively 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm and 9 mm;
the circumferential geometric position precision target group 42 comprises two groups of target lines, wherein the first group of target lines comprises 9 target lines which are distributed in a semicircular shape; the arc length between two adjacent target lines is 10mm on a 20mmm cylindrical arc away from the upper half part of the detection cavity 6; the second group of target lines comprises 15 target points which are distributed in a semicircular shape; on a cylindrical arc of 40mmm from the upper half of the outer wall of the detection chamber 6;
the detection depth target group 45 comprises 6 target lines which are respectively positioned at positions 10mm, 20mm, 30mm, 40mm, 50mm and 60mm below the outer wall of the detection cavity 6;
the axial resolution target group 44 comprises three groups of target lines, the central target lines of the three groups of target lines are respectively the target lines at the positions of 10mm, 30mm and 50mm in the detection depth target group 45, each group of target lines comprises 5 target lines, the distances between the central lines of two adjacent target lines in the same group of target groups are respectively 3mm, 2mm, 1mm and 0.5mm, and the distance intervals between the two adjacent target lines in the circumferential direction are respectively 1 mm;
the lateral resolution target group 43 comprises three groups of target lines which are respectively positioned on cylindrical arcs with the lower edge of the outer wall of the detection cavity 6 being 10mm, 30mm and 50mm, and each group of target lines comprises 5 target lines; the arc length distances of two adjacent target lines are 4mm, 3mm, 2mm and 1mm in sequence;
the fine lateral resolution target group 46 comprises 3 groups of target lines which are respectively positioned on cylindrical arcs which are 10mm, 30mm and 50mm away from the outer wall of the detection cavity 6, and the centers of the 3 groups of target groups and the center of the detection cavity 6 are positioned on the same diameter line; each group of target lines comprises two target lines, and the straight line distance between the two target lines is 0.5 mm.
The simulated lesion 5 is a cylindrical structure, the cylindrical axis of which is parallel to the target line 4 and penetrates between the upper panel 2 and the lower panel 3. The simulated lesion 5 is embedded in a background mock tissue material 16. The structure has different acoustic properties from the background mock tissue material 16. Thus allowing contrast in the ultrasound image. Depending on the type of acoustic performance of the simulated lesion, it may be classified as a tumor simulated lesion 54, a cystic simulated lesion, and a cystic and stone simulated lesion 55. The simulated focus is distributed on the arc with the distance different from the radius of the circle center and is used for detecting the focus finding and identifying capability of the imaging equipment on the imaging depth. Including a first cystic simulated lesion 51 that is relatively close to the detection chamber 6, a second cystic simulated lesion 52 that is equidistant from the detection chamber 6, a tumor simulated lesion 54, and cystic and stone simulated lesions 55, wherein each simulated lesion is staggered alternately in the circumferential direction, and a third cystic simulated lesion 53 that is farthest from the acoustic window 7, i.e., the farthest from the detection chamber 6.
Compare with current similar product, according to the utility model discloses an imitative tissue phantom of making is exclusively used in the detection and the evaluation of resolution, detection depth, geometric position precision, blind area and the focus discovery ability of the formation of image performance of invasive ultrasonic scanning imaging equipment instrument. Through the design of the detection cavity, the actual clinical working environment of the invasive ultrasonic probe is simulated. Through the distribution design of the target lines, the axial and lateral resolution can be measured, and acoustic imaging parameters such as detection depth, blind areas, geometric position accuracy and the like can be measured and detected. The phantom is provided with a plurality of simulated focuses, and can carry out simulated detection on the structures of the focuses such as tumor-like focuses, cystic-like calcified stones and the like at different axial depths. In addition, the tissue-imitating body model has original maintainability, and the service life of the body model can be greatly prolonged by regular maintenance and injection maintenance.
As shown in fig. 6, an invasive ultrasound device generally comprises an invasive ultrasound probe 17 and a device host. The invasive ultrasound probe 17 consists of an invasive ultrasound probe tip transducer 18 at the front end of the probe and an invasive ultrasound probe catheter 19 connected to the tail end thereof. The invasive ultrasound probe catheter 19 serves both support and energy and signal transmission.
The detection body model of the imaging performance of the invasive ultrasonic equipment is a passive device which is specially used for detecting the imaging performance of the ultrasonic equipment in a cavity or the invasive ultrasonic imaging and evaluating the focus discovery capability of the invasive ultrasonic equipment. Because the scanning structure is an interventional scanning structure, an ultrasonic probe is required to be vertically inserted into the detection cavity so as to avoid damaging TM materials in the scanning cavity. The detection cavity 6 is a vertical hole with an upper opening, and the following use modes can be adopted.
The phantom is horizontally placed on a horizontal desktop, the detection cavity 6 is upward, and a proper amount of maintenance liquid is poured around the detection cavity 6. The probe is then slowly inserted into the probe cavity 6. And selecting a proper mode to carry out ultrasonic scanning on the principle of not damaging internal materials. And starting the tested invasive ultrasonic equipment instrument according to a specified program. And inserting the probe of the measured instrument into the detection cavity, keeping the maintenance liquid full, and scanning the sound path for good coupling. And recording the model number, the scanning mode and the working frequency of the probe.
According to the instrument use rule, the (maximum) detection depth, the blind zone, the (threshold) lateral resolution, the (threshold) axial resolution, the axial geometric position indication error (precision) and the lateral geometric position indication error (precision) of the equipment are measured. And observing the simulated lesion on the imaging instrument display
After the measurement is finished, the probe in the ultrasonic cavity scanned in the body model needs to be slowly pulled out. The used ultrasonic maintenance fluid is collected for reuse in the next scan. And wiping the surface of the phantom, and completely sticking and sealing the detection cavity of the detection cavity by gummed paper so as to avoid internal leakage.
To avoid damage to the skin from the ultrasonic treatment fluid (extensive contact over time can cause the skin to become rough) such as frequent contact, it is recommended to work with thin latex gloves. The ultrasonic maintenance liquid is forbidden to enter the mouth, and if a small amount of the ultrasonic maintenance liquid is contacted with the ultrasonic maintenance liquid, the ultrasonic maintenance liquid is required to be cleaned by clear water as soon as possible.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will understand that modifications and equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of them shall fall within the scope of the claims of the present invention.
Claims (9)
1. An invasive ultrasonic equipment imaging performance detection device is characterized by comprising a phantom shell, a supporting and protecting plate (9), a detection cavity (6), a plurality of target lines (4), a plurality of simulated focuses (5) and a background tissue-imitating material (16); the phantom shell is of a cuboid structure and is formed by fixedly connecting an upper panel (2), a lower panel (3), two side panels (10), a bottom panel (11) and a front panel, and the detection cavity (6) is a cylindrical cavity with one open end and penetrates through the opposite surfaces of the upper panel (2) and the lower panel (3); a closed space is formed between the phantom shell and the outer wall of the detection cavity (6), and a background tissue imitating material (16) is filled in the closed space; the bottom panel (11) is provided with a plurality of inlets filled with background tissue-imitating materials (16), and the bottom panel (11) is fixedly connected with the supporting plate (9); the target lines (4) and the simulated lesions (5) are embedded in the background tissue-imitating material (16), and each target line vertically penetrates from the upper panel (2) to the lower panel (3).
2. The invasive ultrasonic equipment imaging performance detection device of claim 1, characterized in that the outer wall of the detection cavity (6) is a background tissue-imitating material (16), and the interior of the detection cavity (6) is filled with an aqueous maintenance liquid (20); the detection chamber is sealed by a detection chamber plug (21).
3. The invasive ultrasonic equipment imaging performance detection device of claim 1, wherein the front panel is formed by hermetically connecting a water tank frame (8) and an acoustic window (7), and the acoustic window (7) is a polyester film with the thickness of 50-100 μm.
4. The invasive ultrasonic equipment imaging performance detection device of claim 3, characterized in that the phantom housing and the supporting plate (9) are both made of hard structural plastic.
5. The invasive ultrasonic equipment imaging performance detection device of claim 1, characterized in that the inlet on the bottom panel (11) is a round hole (13) arranged at the edge thereof, and is blocked by a blocking rubber (14), and the blocking rubber (14) is a vacuum rubber.
6. The invasive ultrasonic equipment imaging performance detection device of claim 1, wherein the background tissue-imitating material (16) is a water-based polymer gel-based composite material, the background tissue-imitating material (16) is maintained by a maintenance liquid, and the maintenance liquid is injected through the plugging rubber (14).
7. The imaging performance detection device of the invasive ultrasonic equipment according to claim 1, characterized in that a plurality of target line openings are formed at the corresponding positions of the upper panel (2) and the lower panel (3) in the vertical direction for positioning the target lines (4); two ends of the target line (4) are respectively fixed on the outer side surfaces of the upper panel (2) and the lower panel (3), and each target line has the same tension so that the nylon target lines are uniformly tightened; the target line material is a nylon line with the diameter of 0.1mm-0.5 mm.
8. The invasive ultrasound apparatus imaging performance detection apparatus according to claim 7, wherein the plurality of target lines (4) include a blind zone target group (41), a circumferential geometric position accuracy target group (42), a probe depth target group (45), an axial resolution target group (44), a lateral resolution target group (43), and a fine lateral resolution target group (46); the space between the detection cavity (6) and any one side panel (10) is the upper half part, and the space between the detection cavity and the other side panel (10) is the lower half part; the circumferential geometric position precision target group (42) is positioned on the upper half part; the detection depth target group (45), the axial resolution target group (44), the lateral resolution target group (43) and the fine lateral resolution target group (46) are positioned on the lower half part;
the blind zone target group (41) comprises 8 target lines, one target line is arranged at intervals of 45 degrees in the anticlockwise direction by taking the detection cavity (6) as a reference, and the distances between each target line and the outer wall of the detection cavity (6) are respectively 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm and 9 mm;
the circumferential geometric position precision target group (42) comprises two groups of target lines, and the first group of target lines comprises 9 target lines which are distributed in a semicircular shape; the arc length between two adjacent target lines is 10mm on a 20mmm cylindrical arc away from the upper half part of the detection cavity (6); the second group of target lines comprises 15 target points which are distributed in a semicircular shape; is positioned on a cylindrical arc of 40mmm from the upper half part of the outer wall of the detection cavity (6);
the detection depth target group (45) comprises 6 target lines which are respectively positioned at positions 10mm, 20mm, 30mm, 40mm, 50mm and 60mm below the outer wall of the detection cavity (6);
the axial resolution target group (44) comprises three groups of target lines, the central target lines of the three groups of target lines are respectively the target lines at the positions of 10mm, 30mm and 50mm in the detection depth target group (45), each group of target lines comprises 5 target lines, the distances between the central lines of two adjacent target lines in the same group of target groups are respectively 3mm, 2mm, 1mm and 0.5mm, and the distance intervals between the two adjacent target lines in the circumferential direction are respectively 1 mm;
the lateral resolution target group (43) comprises three groups of target lines which are respectively positioned on cylindrical arcs of 10mm, 30mm and 50mm of the lower edge of the outer wall of the detection cavity (6), and each group of target lines comprises 5 target lines; the arc length distances of two adjacent target lines are 4mm, 3mm, 2mm and 1mm in sequence;
the fine lateral resolution target group (46) comprises 3 groups of target lines which are respectively positioned on cylindrical arcs which are 10mm, 30mm and 50mm away from the outer wall of the detection cavity (6), and the centers of the 3 groups of target lines and the center of the detection cavity (6) are positioned on the same diameter line; each group of target lines comprises two target lines, and the straight line distance between the two target lines is 0.5 mm.
9. The invasive ultrasonic equipment imaging performance detection device of claim 1, characterized in that the simulated focus (5) is a cylindrical structure, the cylindrical axis of the simulated focus is parallel to the target line (4), and two ends of the simulated focus (5) are respectively connected with the inner side surfaces of the upper panel (2) and the lower panel (3); the simulated focus (5) comprises a first cystic simulated focus (51), a second cystic simulated focus (52), a tumor simulated focus (54), a cystic and calculi simulated focus (55) which is closest to the detection cavity (6), and a third cystic simulated focus (53) which is farthest from the detection cavity (6); the various simulated lesions (5) are distributed on the cylindrical arcs with different distances from the central axis of the detection cavity (6) and different radiuses.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111419277A (en) * | 2020-04-26 | 2020-07-17 | 中国科学院声学研究所 | Invasive ultrasonic equipment imaging performance detection device and method |
| CN115804617A (en) * | 2022-12-12 | 2023-03-17 | 声索生物科技(上海)有限公司 | Involute detection device and detection method for ultrasonic imaging equipment |
| CN115804617B (en) * | 2022-12-12 | 2024-05-28 | 声索生物科技(上海)有限公司 | Involute detection device and involute detection method for ultrasonic imaging equipment |
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2020
- 2020-04-26 CN CN202020651257.4U patent/CN212913235U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111419277A (en) * | 2020-04-26 | 2020-07-17 | 中国科学院声学研究所 | Invasive ultrasonic equipment imaging performance detection device and method |
| CN115804617A (en) * | 2022-12-12 | 2023-03-17 | 声索生物科技(上海)有限公司 | Involute detection device and detection method for ultrasonic imaging equipment |
| CN115804617B (en) * | 2022-12-12 | 2024-05-28 | 声索生物科技(上海)有限公司 | Involute detection device and involute detection method for ultrasonic imaging equipment |
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