CN213993616U - Multi-array-element ultrasonic mechanical scanning probe and imaging system - Google Patents
Multi-array-element ultrasonic mechanical scanning probe and imaging system Download PDFInfo
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- CN213993616U CN213993616U CN202022825688.0U CN202022825688U CN213993616U CN 213993616 U CN213993616 U CN 213993616U CN 202022825688 U CN202022825688 U CN 202022825688U CN 213993616 U CN213993616 U CN 213993616U
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Abstract
The utility model relates to a many array element supersound machinery scanning probe and imaging system, this scanning probe includes the probe body, form at the acoustic lens of probe body terminal surface, and the transducer, wherein be equipped with the linear guide who extends along acoustic lens length direction in probe body inside, the transducer extends along acoustic lens width direction, and there are a plurality ofly, every transducer all has independent connecting cable, scanning probe still includes and sets up the slide on linear guide with linear guide cooperation and can reciprocating sliding, and the driving piece, wherein a plurality of transducers set up on the slide side by side along acoustic lens length direction. The utility model discloses a many array element probe, detection range is wide, realizes the ultrasonic scanning to the different frequencies of target, resolution ratio, degree of depth moreover, and then carries out Doppler's formation of image to blood flow and blood, expands its applied scene, and simple structure simultaneously implements the convenience, can form images with high performance fast to the target moreover.
Description
Technical Field
The utility model belongs to the technical field of ultrasonic imaging, concretely relates to many array elements supersound mechanical scanning probe still relates to a many array elements supersound mechanical scanning formula imaging system simultaneously.
Background
The existing ultrasonic probe is divided into the following parts according to the number of array elements: the probe comprises a single-array element probe and a multi-array element probe, wherein the multi-array element probe comprises a linear array, a convex array, a phased array, an area array and the like.
With the development of high-frequency ultrasonic imaging technology, high-frequency probes are increasingly developed, such as ophthalmic ultrasound, skin ultrasound, ultrasound endoscopy and intravascular ultrasound. However, due to the restriction of core chip technologies such as AD sampling, a multi-channel high-frequency AD chip has not been sold yet for a while, so that most of the existing high-frequency ultrasound systems are single-element systems.
In order to realize high-frequency imaging under the existing conditions, mechanical scanning such as mechanical circular scanning, swinging scanning or linear scanning is often adopted to complete the imaging of the target. However, in accordance with clinical needs, not only a high-resolution ultrasound image of shallow tissue but also a contour image of deep tissue are often required for puncture path planning, intraoperative navigation, and the like. In addition, the existing single-element mechanical scanning system is limited by an imaging method, cannot display the distribution of blood vessels and blood flow conditions in a target, and also limits the clinical application of related high-frequency ultrasonic imaging products.
That is, the main technical problems of the current high frequency mechanical scanning probes and systems:
1) only the single-array-element transducer is used, and the detection range is limited;
2) the application scene is limited due to the fact that blood flow tests, blood imaging and the like cannot be performed due to the fact that the Doppler function is not available;
3) the processing technology is complex, the price is high, the core devices of the multi-channel high-frequency ultrasonic imaging system are limited, and the rapid high-performance imaging of the target cannot be realized.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art not enough, provide a modified many array elements supersound mechanical scanning probe.
Simultaneously the utility model discloses still relate to a many array elements supersound mechanical scanning formula imaging system.
For solving the technical problem, the utility model discloses a following technical scheme:
a multi-array-element ultrasonic mechanical scanning probe comprises a probe body, an acoustic lens and a plurality of transducers, wherein the acoustic lens and the transducers are formed on the end face of the probe body, a linear guide rail extending along the length direction of the acoustic lens is arranged in the probe body, the plurality of transducers extend along the width direction of the acoustic lens, each transducer is provided with an independent connecting cable, the size range of each transducer is 0.05-3 mm, and the frequency range is 0.1-100 MHz; the scanning probe also comprises a sliding seat matched with the linear guide rail and arranged on the linear guide rail in a reciprocating sliding mode, and a driving piece, wherein the plurality of transducers are arranged on the sliding seat side by side along the length direction of the acoustic lens.
Preferably, the transducer is a piezoceramic transducer, a composite transducer, a capacitive transducer or a micro-transducer.
According to a specific implementation of the utility model and preferred aspect, a plurality of transducers divide into 10 MHz ~ 100 MHz's high frequency transducer, 1 MHz ~ 10 MHz's medium frequency transducer, 0.05MHz ~ 1 MHz's low frequency transducer according to the frequency, and wherein the focus size that high frequency transducer, medium frequency transducer, low frequency transducer formed changes from small to big.
Preferably, the linear guide rail is a screw rod matched with the slide carriage, the driving part comprises a motor and a transmission part for driving and connecting the motor and the linear guide rail, wherein under the rotation of the linear guide rail, the slide carriage moves transversely, and the transverse moving speed is 0.1-100 mm/s.
The utility model discloses another technical scheme: a multi-array element ultrasonic mechanical scanning type imaging system comprises a display unit, a host and a multi-array element ultrasonic mechanical scanning probe.
Preferably, the host comprises an image processor, a control module in communication with the image processor, and an echo collector communicating each transducer with the control module, respectively, wherein the control module is also in communication with the driver.
Furthermore, the echo collector comprises a receiving/transmitting switch, a low-noise amplifying unit, a time gain compensation unit and a sampling unit which are sequentially arranged between the transducer and the control module.
Preferably, the control module is also in communication with a time gain compensation unit.
According to yet another embodiment and preferred aspect of the present invention, the host further comprises a high voltage power supply actuator in communication with each of the transmit/receive switches.
In addition, the ultrasonic waves emitted by each transducer and the received echoes form ultrasonic imaging data of the scanning point, a frame of image is formed by a plurality of ultrasonic imaging data, and the image processor splices and fuses the plurality of frames of images to form a complete image.
Due to the implementation of the above technical scheme, compared with the prior art, the utility model have the following advantage:
the utility model discloses a many array element probe, detection range is wide, realizes the ultrasonic scanning to the different frequencies of target, resolution ratio, degree of depth moreover, and then carries out Doppler's formation of image to blood flow and blood, expands its applied scene, and simple structure simultaneously implements the convenience, can form images with high performance fast to the target moreover.
Drawings
Fig. 1 is a schematic front view of a scanning probe according to the present invention;
FIG. 2 is a schematic top view of FIG. 1;
fig. 3 is a schematic structural diagram of an imaging system of the present invention;
FIG. 4 is a block schematic diagram of the imaging system of FIG. 3;
wherein: A. a display unit; q, a display.
B. A host; b1, an image processor; b2, a control module; b3, echo collector; b30, receiving/transmitting switch; b31, a low-noise amplifying unit; b32, a time gain compensation unit; b33, a sampling unit; b34, high-voltage power supply exciter;
t, multi-array element ultrasonic mechanical scanning probe; 1. a probe body; 2. an acoustic lens; 3. a linear guide rail; 4. a slide base; 5. a transducer; 6. a drive member; 60. an electric motor.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
As shown in fig. 1, the multi-element ultrasonic mechanical scanning probe T of the present embodiment includes a probe body 1, an acoustic lens 2 formed on an end face of the probe body 1, a linear guide 3 disposed inside the probe body 1 and extending along a length direction of the acoustic lens 2, a slide 4, three transducers 5 disposed side by side on the slide 4, and a driving member 6 for driving the slide 4 to move along the length direction of the linear guide 3.
Specifically, each transducer 5 has an independent connection cable, and the width of each transducer 5 ranges from 0.05 mm to 3 mm, and the frequency ranges from 0.1 MHz to 100 MHz.
In this example, the transducers 5 are piezoceramic transducers, and the three transducers 5 are equal in length and equal in width, with each transducer 5 being 4 mm in length and 0.5mm in width.
Referring to fig. 2, the three transducers 5 are divided into a high frequency transducer of 10 MHz to 100MHz, a medium frequency transducer of 1 MHz to 10 MHz, and a low frequency transducer of 0.05MHz to 1 MHz according to frequency, wherein the focal lengths formed by the high frequency transducer, the medium frequency transducer, and the low frequency transducer vary from small to large.
Specifically, the high-frequency transducer, the medium-frequency transducer and the low-frequency transducer are arranged on the sliding seat 4 side by side from left to right.
The linear guide rail 3 is a screw rod matched with the slide carriage 4, the driving part 6 comprises a motor 60 and a transmission part for driving and connecting the motor 60 and the linear guide rail 3, wherein under the rotation of the linear guide rail 3, the slide carriage 4 moves transversely, and the transverse moving speed is 10 mm/s.
That is, the three transducers 5 may be of the same size or different sizes.
Meanwhile, the focal length of each transducer 2 is different according to the working frequency. And selecting the transducer with a proper focal length according to the principles of high-frequency near-field focusing, low-frequency far-field focusing and intermediate-frequency imaging middle area focusing.
In this example, the transducer 5 is fixed on the slide 4, and is totally immersed in the ultrasound imaging coupling liquid, and the front end of the coupling liquid is an acoustic lens for imaging and protection.
The motor 60 may be a brush motor, a brushless motor or an ac/dc motor, and a conventional gear transmission may be adopted between the motor 60 and the linear guide 3.
In the embodiment, when the multi-array element ultrasonic mechanical scanning probe T works, each probe has independent transmitting and receiving control and has independent working imaging capability, the respective detection depth and imaging range can be determined according to different detection frequencies, detection sensitivity, size and other parameters of each probe, and the detection of different frequencies, different resolutions and depths of the same section of the same tissue is realized by left-right moving scanning.
Referring to fig. 3, the multi-element ultrasonic mechanical scanning imaging system includes a display unit a, a host B, and a multi-element ultrasonic mechanical scanning probe T.
In this example, the display unit a comprises a conventional display q.
Referring to fig. 4, the host B includes an image processor B1, a control module B2 in communication with the image processor B1, an echo collector B3 communicating each transducer 5 with the control module B2, respectively, wherein the control module B2 is also in communication with the motor 60.
The echo collector b3 includes a transmit/receive switch b30, a low-noise amplification unit b31, a time gain compensation unit b32, and a sampling unit b33, which are sequentially disposed between the transducer 5 and the control module b 2.
The control module b2 is also in communication with a time gain compensation unit b 32.
Meanwhile, the above-mentioned host B further includes a high voltage power source exciter B34 in communication with each transmit/receive switch B30.
In addition, the ultrasonic waves emitted by each transducer and the received echoes form ultrasonic imaging data of the scanning point, a frame of image is formed by a plurality of ultrasonic imaging data, and the image processor splices and fuses the plurality of frames of images to form a complete image.
Specifically, in the initial position, all three transducers 5 will transmit ultrasonic waves and receive echoes as the finger ultrasonic rf echo signal data at the point, and then as the motor rotates, the transducers 5 are controlled to move to the next scanning point, and the three transducers 5 transmit ultrasonic waves and receive echoes again as the finger ultrasonic rf echo signal data at the point. This is repeated until the transducer achieves one frame image scan of one slice from the left most to the right most, or right most to left most, of the imaging window. Then, the scanning moving speed of the transducer is calculated by combining the rotating speed and the rotating system of the motor, and then the imaging space position corresponding to each datum is determined according to the data of the coding emitter, so that a complete image of the section is spliced.
However, since each probe has a different frequency, it can perform fusion of multi-frequency images in addition to conventional B-mode ultrasound imaging.
Specifically, after B-ultrasonic images of the same section of the target with different frequencies are obtained according to the steps, according to the characteristics of the frequency, the high-frequency attenuation is fast, the near-field resolution is high, the detection depth is shallow, and only the near-field image is selected; the low-frequency probe has low resolution but deep imaging depth, so that the low-frequency probe selects an image of a far field; and the middle frequency displays the middle area, and then three or more images are fused and spliced into one image, so that high-performance imaging of the target full-depth area is realized.
It needs to be further explained that: because the resolution ratios of the probes are different, the probes are not spliced directly according to image pixels, but spliced and fused according to the actual physical size and structure of a target, and a boundary region is spliced, certain gradual change type transformation can be performed to obtain smoother and continuous images in order to avoid image jumping.
In addition, by utilizing the characteristic that the probe is provided with a plurality of transducers, when the center frequencies of two transducers are the same, Doppler imaging can be realized.
In summary, the present embodiment has the following advantages:
1. by providing the novel multi-array element scanning ultrasonic probe, the defects that the existing array high-frequency ultrasonic probe is complex in processing technology and high in price, a core device of a multi-channel high-frequency ultrasonic imaging system is limited and the like can be effectively overcome, and rapid high-performance imaging of a target is realized;
2. by utilizing the multi-array element scanning ultrasonic probe, the defect that the conventional single-array element scanning probe cannot realize Doppler color imaging can be overcome;
3. by using the multi-array element probe and different center frequencies, imaging of the target with different resolutions and depths can be realized;
4. the multi-array-element probe has a wide detection range, realizes ultrasonic scanning of different frequencies, resolutions and depths of targets, recycles an image fusion technology, can also realize high-performance ultrasonic images of the whole area of the targets, and further performs Doppler imaging on blood flow and blood, and expands application scenes of the multi-array-element probe.
The present invention has been described in detail, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the protection scope of the present invention should not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. The utility model provides a many array elements supersound mechanical scanning probe, its includes the probe body, forms in the acoustic lens and the transducer of probe body terminal surface which characterized in that:
a linear guide rail extending along the length direction of the acoustic lens is arranged in the probe body, a plurality of transducers extend along the width direction of the acoustic lens, each transducer is provided with an independent connecting cable, the width range of each transducer is 0.05-3 mm, and the frequency range is 0.1-100 MHz; the scanning probe also comprises a sliding seat and a driving part, wherein the sliding seat is matched with the linear guide rail and can be arranged on the linear guide rail in a reciprocating sliding mode, and the transducers are arranged on the sliding seat side by side along the length direction of the acoustic lens.
2. The multi-element ultrasonic mechanical scanning probe of claim 1, wherein: the transducer is a piezoelectric ceramic transducer, a composite transducer, a capacitance transducer or a micro transducer.
3. The multi-element ultrasonic mechanical scanning probe of claim 1, wherein: the transducers are divided into a high-frequency transducer of 10 MHz-100 MHz, a medium-frequency transducer of 1 MHz-10 MHz and a low-frequency transducer of 0.05 MHz-1 MHz according to frequency, wherein the focal lengths formed by the high-frequency transducer, the medium-frequency transducer and the low-frequency transducer are changed from small to large.
4. The multi-element ultrasonic mechanical scanning probe of claim 1, wherein: the linear guide rail is a screw rod matched with the sliding seat, the driving piece comprises a motor and a transmission part for driving and connecting the motor and the linear guide rail, wherein under the rotation of the linear guide rail, the sliding seat moves transversely, and the transverse moving speed is 0.1-100 mm/s.
5. The utility model provides a many array elements supersound mechanical scanning formula imaging system, its includes display element and host computer, its characterized in that: the imaging system further comprising a scanning probe according to any of claims 1 to 4.
6. The multi-element ultrasonic mechanical scanning imaging system of claim 5, wherein: the host comprises an image processor, a control module communicated with the image processor and an echo collector respectively communicating each transducer with the control module, wherein the control module is also communicated with the driving piece.
7. The multi-element ultrasonic mechanical scanning imaging system of claim 6, wherein: the echo collector comprises a receiving/transmitting switch, a low-noise amplification unit, a time gain compensation unit and a sampling unit which are sequentially arranged between the transducer and the control module.
8. The multi-element ultrasonic mechanical scanning imaging system of claim 7, wherein: the control module is also communicated with the time gain compensation unit.
9. The multi-element ultrasonic mechanical scanning imaging system of claim 7, wherein: the host machine also comprises a high-voltage power supply exciter communicated with each receiving/transmitting switch.
10. The multi-element ultrasonic mechanical scanning imaging system of claim 6, wherein: the ultrasonic waves emitted by each transducer and the received echoes form ultrasonic imaging data of the scanning point, a plurality of ultrasonic imaging data form a frame image, and the image processor splices and fuses the plurality of frame images to form a complete image.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112353419A (en) * | 2020-11-30 | 2021-02-12 | 简小华 | Multi-array element scanning type ultrasonic probe, ultrasonic imaging system and ultrasonic imaging method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112353419A (en) * | 2020-11-30 | 2021-02-12 | 简小华 | Multi-array element scanning type ultrasonic probe, ultrasonic imaging system and ultrasonic imaging method |
| CN112353419B (en) * | 2020-11-30 | 2024-03-15 | 中国科学院苏州生物医学工程技术研究所 | Multi-array element scanning type ultrasonic probe, ultrasonic imaging system and ultrasonic imaging method |
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