CN106725598B - Heart ultrasonic system based on multiple percutaneous ultrasonic transducers and imaging method - Google Patents
Heart ultrasonic system based on multiple percutaneous ultrasonic transducers and imaging method Download PDFInfo
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- CN106725598B CN106725598B CN201611238842.6A CN201611238842A CN106725598B CN 106725598 B CN106725598 B CN 106725598B CN 201611238842 A CN201611238842 A CN 201611238842A CN 106725598 B CN106725598 B CN 106725598B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0883—Detecting organic movements or changes, e.g. tumours, cysts, swellings for diagnosis of the heart
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/42—Details of probe positioning or probe attachment to the patient
- A61B8/4209—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames
- A61B8/4236—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames characterised by adhesive patches
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4477—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device using several separate ultrasound transducers or probes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
- A61B8/4494—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer characterised by the arrangement of the transducer elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/52—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/5215—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves involving processing of medical diagnostic data
- A61B8/5238—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves involving processing of medical diagnostic data for combining image data of patient, e.g. merging several images from different acquisition modes into one image
Abstract
The invention discloses a heart ultrasound system based on a plurality of percutaneous ultrasound transducers, comprising: at least four percutaneous ultrasonic transducers respectively adhered to the four monitoring areas to collect real-time ultrasonic signals of at least four cardiac sections simultaneously; the signal acquisition box is used for storing real-time ultrasonic signals of at least four cardiac sections; the real-time ultrasonic signals of at least four cardiac sections are simultaneously transmitted to a controller of an upper computer through a signal acquisition box for signal processing and storage, and at least four real-time ultrasonic sub-images of the cardiac sections and real-time three-dimensional dynamic images of the whole heart are output; the at least one percutaneous ultrasound transducer is a biplane percutaneous ultrasound transducer. The invention adopts four percutaneous ultrasonic transducers to collect real-time ultrasonic signals of at least four cardiac sections simultaneously and send the signals to the controller for data processing and storage, displays real-time ultrasonic sub-images of at least four cardiac sections and real-time three-dimensional dynamic images of the whole heart, does not need manual holding, has visual imaging and convenient operation.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a heart ultrasonic system based on a plurality of percutaneous ultrasonic transducers and an imaging method.
Background
Ultrasonic inspection is performed by using reflection of ultrasonic waves by a human body. The upper computer is an instrument which generates incident ultrasonic waves through an ultrasonic transducer to enter human tissues, receives reflected ultrasonic waves of each interface of the human tissues, and processes the reflected signals to obtain human tissue images. The ultrasonic transducer is used as an important component of ultrasonic diagnosis and has a decisive effect on ultrasonic detection effect.
In the prior art, ultrasonic transducers can be divided into external and internal applications. The external ultrasonic transducer is generally of a non-fixed structure, and the ultrasonic examination requires that a doctor holds the ultrasonic transducer to press the ultrasonic part of the examined person, and meanwhile, because the detection surface of one ultrasonic transducer is limited, the doctor needs to move and change the examination position for a plurality of times so as to output two-dimensional or three-dimensional images of a single section of each examination position, and then a three-dimensional image is formed in the brain of the doctor. Such non-stationary ultrasonic transducers require specialized ultrasound specialist operations.
Disclosure of Invention
Aiming at the defects in the technology, the invention provides a heart ultrasonic system based on a plurality of percutaneous ultrasonic transducers, according to the requirements, four percutaneous ultrasonic transducers can be selected to be respectively and correspondingly stuck to four monitoring areas to acquire real-time ultrasonic signals of at least four heart sections and send the real-time ultrasonic signals to an upper computer, and a real-time ultrasonic sub-image of at least four heart sections and a real-time three-dimensional dynamic image of an integral heart are displayed without manual hand holding, so that imaging is visual, imaging contrast is visual, and convenience is improved;
the invention also provides an ultrasonic imaging method based on a plurality of percutaneous ultrasonic transducers, which sequentially performs image cutting and synthesis on the real-time ultrasonic sub-images of at least four heart sections through a controller to obtain the real-time three-dimensional dynamic image output display of the whole heart, so that doctors can intuitively and vividly know the real-time ultrasonic images of the heart, and auxiliary reference is provided for operation; the fragmentation processing mode of the real-time ultrasonic sub-image is beneficial to improving the accuracy of the subsequent image synthesis.
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied by the following:
the present invention provides a cardiac ultrasound system based on a plurality of percutaneous ultrasound transducers, comprising:
the percutaneous ultrasonic transducer assembly comprises at least four percutaneous ultrasonic transducers, and the four percutaneous ultrasonic transducers are respectively and correspondingly stuck to four monitoring areas to simultaneously acquire real-time ultrasonic signals of at least four heart sections;
the signal acquisition box is provided with an adapter component which is in communication connection with each percutaneous ultrasonic transducer and is used for storing real-time ultrasonic signals of the at least four cardiac sections;
the upper computer comprises a controller and a display screen which are in communication connection, and the controller is in communication connection with the signal acquisition box; the real-time ultrasonic signals of the at least four cardiac sections are simultaneously transmitted to the controller through the signal acquisition box for signal processing and storage, and the real-time ultrasonic sub-images of the at least four cardiac sections and the real-time three-dimensional dynamic images of the whole heart are output to the display screen for display;
the four monitoring areas are respectively an upper sternum fossa area, a left sternum edge area, a cardiac apex area and a lower xiphoid area; at least one of the percutaneous ultrasound transducers in the percutaneous ultrasound transducer assembly is a biplane percutaneous ultrasound transducer.
Preferably, the adapter assembly comprises at least four adapters detachably connected to the percutaneous ultrasound transducer; the number of the adapters is greater than the number of the percutaneous ultrasonic transducers.
Preferably, each of the percutaneous ultrasound transducers includes: the transducer body comprises an auxiliary end which is vertically arranged and a piezoelectric wafer array element body which is horizontally arranged; the piezoelectric wafer array element body is fixed below the auxiliary end; the sticking board is flexibly and transparently sleeved outside the array element body of the piezoelectric wafer; an adhesive layer located below the adhesive plate; and the protective film is detachably covered below the adhesive layer and the piezoelectric wafer array element body.
Preferably, the adhesive layer extends out of the lower part of the piezoelectric wafer array element body; the protective film comprises a first protective film which can be detachably covered below the adhesive layer and a second protective film which can be detachably packaged outside the extending end of the piezoelectric wafer array element body; and a coupling layer with a coupling agent is further arranged between the second protective film and the extending end of the piezoelectric wafer array element body.
Preferably, the transducer body is further provided with an indwelling wire, one end of the indwelling wire is connected to the piezoelectric wafer array element body, the other end of the indwelling wire extends out of the auxiliary end, and the extending end of the indwelling wire is provided with a first plug which is matched and spliced with the adapter.
Preferably, the detecting body is further provided with a second plug which is matched and spliced with the adapter, the second plug is located above the auxiliary end, and the second plug passes through the auxiliary end to be electrically connected to the piezoelectric wafer array element body.
Preferably, the percutaneous ultrasound transducer is a biplane percutaneous ultrasound transducer; the number of the retaining wires or the second plugs is two, and the number of the piezoelectric wafer array element bodies is correspondingly matched with two; the transducer body further comprises a first switch and a second switch respectively positioned on the auxiliary end; the first switch and the second switch are respectively and correspondingly electrically connected between one retaining wire and one piezoelectric wafer array element body or respectively and correspondingly electrically connected between one second plug and one piezoelectric wafer array element body.
A method of cardiac ultrasound imaging based on a plurality of percutaneous ultrasound transducers, comprising the steps of:
acquisition of real-time ultrasound signals of at least four cardiac surfaces: the four percutaneous ultrasonic transducers are respectively and correspondingly stuck to the four monitoring areas to simultaneously acquire real-time ultrasonic signals of at least four cardiac sections;
signal processing and display of real-time ultrasound sub-images of at least four cardiac slices: the controller respectively carries out signal processing on the real-time ultrasonic signals of at least four cardiac surfaces transmitted by the signal acquisition box to obtain real-time ultrasonic sub-images of at least four cardiac surfaces, and the real-time ultrasonic sub-images are output to the display screen for display;
signal processing and display of real-time three-dimensional dynamic images of the whole heart: and the controller sequentially performs image cutting and synthesis on the real-time ultrasonic sub-images of the at least four cardiac sections to obtain a real-time three-dimensional dynamic image of the whole heart, and outputs the real-time three-dimensional dynamic image to the display screen for display.
Preferably, the image cropping and compositing comprises the following steps:
cutting out real-time ultrasonic sub-images of at least four heart sections respectively to obtain a real-time ultrasonic sub-image fragment set and storing the fragment set;
determining the range of the region to be inlaid according to the three-dimensional shape of the heart; dividing the areas to be inlaid, and outputting a plurality of single areas to be inlaid;
correspondingly embedding the real-time ultrasonic sub-image fragment sets into a plurality of single areas to be embedded respectively, and outputting a plurality of real-time ultrasonic images of the single areas to be embedded;
and correspondingly embedding and summarizing the plurality of single-region real-time ultrasonic images to be embedded into the regions to be embedded, and outputting the synthesized real-time three-dimensional dynamic images of the whole heart.
Preferably, the real-time ultrasonic sub-image fragment sets are respectively and correspondingly inlaid into a plurality of single areas to be inlaid, and a plurality of single area real-time ultrasonic images to be inlaid are output; the method comprises the following steps:
according to each single region to be inlaid, carrying out inlaid screening on real-time ultrasonic sub-image fragments in the real-time ultrasonic sub-image fragment set to obtain a real-time ultrasonic sub-image fragment subset corresponding to each single region to be inlaid;
and carrying out color homogenizing treatment on the real-time ultrasonic sub-image fragments in the real-time ultrasonic sub-image fragment subset, and outputting a plurality of to-be-inlaid single-area real-time ultrasonic images.
The invention at least comprises the following beneficial effects:
1) According to the heart ultrasonic system based on the plurality of percutaneous ultrasonic transducers, according to the requirements, the four percutaneous ultrasonic transducers can be selected to be respectively and correspondingly stuck to the four monitoring areas to acquire real-time ultrasonic signals of at least four heart sections and send the real-time ultrasonic signals to the upper computer, and the real-time ultrasonic sub-images of the at least four heart sections and the real-time three-dimensional dynamic images of the whole heart are displayed, so that manual holding is not needed, imaging is visual, imaging contrast is visual, and convenience is improved;
2) The signal acquisition box is used for storing real-time ultrasonic signals of at least four cardiac sections; the adapter assembly comprises at least four adapters detachably connected with the percutaneous ultrasonic transducer; the percutaneous ultrasonic transducer is connected with the signal acquisition box in a modularized manner, so that the percutaneous ultrasonic transducer is convenient to assemble and disassemble and convenient for modularized production; the number of the adapter is larger than that of the percutaneous ultrasonic transducers, wherein one or more adapters are damaged, and the connection of the percutaneous ultrasonic transducers can be ensured through other adapters;
3) The adhesive layer extends out of the lower part of the piezoelectric wafer array element body, the detection body 11 is adhered to the monitoring area, and the lower part of the piezoelectric wafer array element body can squeeze the monitoring area under the pressure action of the adhesive layer adhered to the skin of the monitoring area so as to better realize ultrasonic imaging; the protective film comprises a first protective film which can be detachably covered below the adhesive layer and a second protective film which can be detachably packaged outside the extending end of the piezoelectric wafer array element body, and a coupling layer with a coupling agent is further arranged between the second protective film and the extending end of the piezoelectric wafer array element body, so that the adhesive layer is separated from the protection of the coupling agent layer of the extending end of the piezoelectric wafer array element body, and the mutual influence is avoided; the doctor can directly paste the second protective film to the corresponding monitoring area without coating the couplant, so that the time is saved and the use is convenient;
4) The process of sequentially cutting and synthesizing the real-time ultrasonic sub-images of at least four cardiac surfaces by the controller is based on the fragmentation processing mode of the real-time ultrasonic sub-images of at least four cardiac surfaces, and the ultrasonic sub-images of invalid and overlapped parts are cut and synthesized again, so that the signal processing amount is reduced, and the accuracy of the subsequent image synthesis is improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a diagram illustrating an exemplary communication of a four percutaneous ultrasound transducer based cardiac ultrasound system in accordance with the present invention;
FIG. 2 is a schematic diagram of a signal acquisition box according to the present invention;
fig. 3 (a) -3 (b) are vertical cross-sectional views of two embodiments of a percutaneous ultrasound transducer according to the present invention;
FIG. 4 is a flowchart of an exemplary ultrasound imaging method based on four percutaneous ultrasound transducers according to the present invention;
FIG. 5 is a flow chart of a method of image cropping and compositing according to the present invention;
FIG. 6 is a flow chart of a method of mosaic screening according to the present invention;
FIG. 7 is a flowchart of a method of color evening process according to the present invention;
in the figure:
10-a percutaneous ultrasound transducer;
11-a transducer body; 111-auxiliary end; 112-a piezoelectric wafer array element body; 113-a couplant layer; 114-indwelling wire; 115-a first plug; 116-a second plug; 117-a first switch; 118-a second switch;
12-a sticker; 131-a first protective film; 132-a second protective film; 14-an adhesive layer;
20-a signal acquisition box; 21-adapter;
30-an upper computer; 31-a controller; 32-display screen.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1
In general cardiac ultrasound examinations, it is necessary to complete real-time ultrasound images of multiple cardiac slices of four monitoring regions, namely the suprasternal fossa region, the left sternal edge region, the apex region, and the subxiphoid region of the heart, which may include, for example: the aortic arch long axial section of the suprasternal fossa, the parasternal long axial section and the parasternal short axial section of the parasternal fossa, and the apex four-chamber section and the subxiphoid four-chamber section are respectively obtained from the suprasternal fossa, the left edge area and the apex area, and the subxiphoid four-chamber section and the subxiphoid IVC section are respectively obtained from the subxiphoid area.
As shown in fig. 1, the present invention provides a cardiac ultrasound system based on a plurality of percutaneous ultrasound transducers, which includes a percutaneous ultrasound transducer assembly, a signal acquisition box 20, and a host computer 30. The percutaneous ultrasonic transducer assembly comprises at least four percutaneous ultrasonic transducers 10, and the four percutaneous ultrasonic transducers 10 are respectively and correspondingly stuck to four monitoring areas to collect real-time ultrasonic signals of at least four cardiac sections simultaneously. The signal acquisition box 20 is provided with an adapter assembly in communication with each percutaneous ultrasound transducer 10 for storing real-time ultrasound signals of at least four cardiac slices. The upper computer 30 comprises a controller 31 and a display screen 32 which are in communication connection, and the controller 31 is in communication connection with the signal acquisition box 20; the real-time ultrasonic signals of at least four cardiac surfaces are simultaneously transmitted to the controller 31 for signal processing and storage through the signal acquisition box 20, and the real-time ultrasonic sub-images of at least four cardiac surfaces and the real-time three-dimensional dynamic images of the whole heart are output to the display screen 32 for display.
In the above embodiment, the four monitoring areas are the suprasternal fossa area, the left sternal edge area, the apical area and the subxiphoid area, respectively. The percutaneous ultrasonic transducer 10 can continuously collect real-time ultrasonic signals by being stuck to a monitoring area, compared with a common ultrasonic transducer, and no hand-held operation is needed. The number of the percutaneous ultrasonic transducers 10 is at least four, so that after one or several percutaneous ultrasonic transducers 10 fail, four other percutaneous ultrasonic transducers 10 are still provided to ensure real-time ultrasonic signal acquisition in four monitoring areas, and fig. 1 shows a communication example of four percutaneous ultrasonic transducers 10. In order to ensure that four percutaneous ultrasound transducers 10 collect real-time ultrasound signals of at least four cardiac surfaces simultaneously, at least one percutaneous ultrasound transducer 10 in the percutaneous ultrasound transducer assembly is a biplane percutaneous ultrasound transducer, a horizontal plane percutaneous ultrasound transducer means that one percutaneous ultrasound transducer 10 can collect real-time ultrasound signals of two cardiac surfaces simultaneously. For example, if the percutaneous ultrasonic transducer 10 disposed in the left edge area of the sternum is a biplane percutaneous ultrasonic transducer, the percutaneous ultrasonic transducer 10 in the monitoring area can complete real-time ultrasonic signal acquisition of two cardiac sections of a long-axis section beside the sternum and a short-axis section beside the sternum; for another example, the percutaneous ultrasonic transducer 10 disposed in the subxiphoid zone is a biplane percutaneous ultrasonic transducer, so that the percutaneous ultrasonic transducer 10 in the monitoring zone can complete real-time ultrasonic signal acquisition of two cardiac sections of the subxiphoid four-cavity section and the subxiphoid IVC section simultaneously. Therefore, when all of the four percutaneous ultrasonic transducers 10 attached to the four monitoring areas are biplane percutaneous ultrasonic transducers, the simultaneous acquisition of real-time ultrasonic signals of eight cardiac surfaces is achieved at most. It should be noted that, each percutaneous ultrasonic transducer 10 in the ultrasonic transducer assembly may be a single-sided acquisition, a double-sided acquisition, or any other multi-sided acquisition, for example, the number of the planes of the multi-sided acquisition is four, so that one percutaneous ultrasonic transducer 10 may acquire real-time ultrasonic signals of four planes simultaneously; as for the specific number of planes for multi-plane acquisition, the present invention is not particularly limited.
In the above embodiment, compared with the single and common ultrasonic transducer which is used for holding and continuously changing the monitoring area, the four percutaneous ultrasonic transducers 10 provided by the invention are respectively and correspondingly stuck to the four monitoring areas to collect the real-time ultrasonic signals of at least four cardiac surfaces at the same time, so that the monitoring area does not need to be held manually and continuously changed, the manpower resources are saved, and the operation space for cardiac monitoring is saved. Because the four percutaneous ultrasonic transducers 10 can collect real-time ultrasonic signals at the same time and send the signals to the controller 31 of the upper computer for signal processing through the signal collection box 20, the real-time ultrasonic sub-images of at least four cardiac surfaces can be output at the same time, instead of the traditional method that the real-time ultrasonic sub-images of a plurality of cardiac surfaces are sequentially output through continuously changing the monitoring area, so that the imaging speed is higher. Compared with the traditional method that a doctor must serially connect a plurality of ultrasonic sub-images of the heart sections continuously obtained through continuously changing a monitoring area to imagine a three-dimensional model of the whole heart and real-time dynamic movement of the whole heart, the method can output the three-dimensional real-time ultrasonic images of the whole heart to the display screen 32 for display by processing the real-time ultrasonic sub-images of at least four heart sections through the controller 31, namely, after the controller 31 carries out three-dimensional reconstruction and simulation on the real-time ultrasonic sub-images of at least four heart sections, the three-dimensional real-time ultrasonic images of the whole heart can be obtained, and more visual and visual viewing can be realized; and moreover, doctors can also simultaneously combine the real-time ultrasonic subgraph of any single heart section in at least four heart sections with the three-dimensional real-time ultrasonic image of the whole heart to carry out comparison and check, check the real-time movement of each chamber of the heart, valve movement, blood flow condition and the like, so that the real-time monitoring of the heart function change can be better realized, and auxiliary reference is provided for operation. As a more preferable mode, at least four percutaneous ultrasonic transducers 10 are correspondingly stuck to different monitoring areas to acquire real-time ultrasonic signals of a plurality of different cardiac surfaces, the real-time ultrasonic signals of the plurality of different cardiac surfaces are processed by the controller 31 to generate real-time ultrasonic sub-images of the plurality of different cardiac surfaces, and the real-time ultrasonic sub-images of the plurality of different cardiac surfaces provide rich sources for further data processing of the subsequent controller 31 to obtain three-dimensional reconstruction and simulation of the three-dimensional real-time ultrasonic image of the whole heart, so that the accuracy of the three-dimensional reconstruction and simulation of the three-dimensional real-time ultrasonic image of the whole heart by the controller 31 is improved. Conversely, according to the stereoscopic real-time ultrasound image of the whole heart obtained by the controller 31, the controller 31 can also calculate the real-time ultrasound sub-images of the other multiple cardiac surfaces, so that the medical staff can know the real-time movements of the other multiple cardiac surfaces, the valve movements, the blood flow conditions and the like. In addition, compared with the prior art that the real-time ultrasonic sub-images of a plurality of cardiac surfaces can be continuously monitored only by manual hand-holding and continuous operation, the percutaneous ultrasonic transducer 10 provided by the invention can continuously and simultaneously output the real-time ultrasonic sub-images corresponding to the cardiac surfaces after being stuck to a monitoring area, and a doctor does not need to continuously hand-hold operation, so that the time and the manpower resources are saved. It should be noted that, the real-time ultrasound sub-image output by the controller 31 after each percutaneous ultrasound transducer 10 is acquired may be a two-dimensional or three-dimensional ultrasound image, and for visual inspection, the present invention is preferably a three-dimensional ultrasound image. For ease of display and operation, the display screen 32 is preferably a touch screen.
As a preferred embodiment of the present invention, as shown in fig. 2, the adapter assembly comprises at least four adapters 21 detachably connected to the percutaneous ultrasonic transducer 10; the number of adaptors 21 is greater than the number of percutaneous ultrasound transducers 10. In this embodiment, the adapter 21 is detachably connected with the percutaneous ultrasonic transducer 10, so that the percutaneous ultrasonic transducer assembly and the adapter assembly are connected in a modularized manner, and a medical staff can select a corresponding number of percutaneous ultrasonic transducers 10 to be assembled to the adapter assembly according to the number of the heart section ultrasonic images required, so that the assembly and the disassembly are convenient; the percutaneous ultrasound transducer 10 and the adapter assembly may also be produced separately and modularly. The number of the adapter 21 is larger than that of the percutaneous ultrasonic transducers 10, so that when one or a plurality of the adapter 21 is damaged, other adapter 21 can still be provided to ensure the detachable connection of the percutaneous ultrasonic transducers 21, and the service life of the signal acquisition box 20 is prolonged. An example of four adapters 21 is given in fig. 2.
As a preferred embodiment of the present invention, as shown in fig. 3 (a) and 3 (b), each of the percutaneous ultrasonic transducers 10 includes a transducer body 11, an adhesive sheet 12, a protective film, and an adhesive layer 14. The transducer body 11 includes a vertically disposed auxiliary end 111 and a horizontally disposed piezoelectric wafer array element body 112, the piezoelectric wafer array element body 112 being fixedly mounted below the auxiliary end 111. The adhesive plate 12 is flexibly and transparently sleeved outside the piezoelectric chip array element body 112. The adhesive layer 14 is located below the adhesive sheet 12. The protective film can be detachably covered under the adhesive layer 14 and the piezoelectric wafer array element body 112.
In this embodiment, the auxiliary end 111 is used for holding the transducer body 11 to assist in completing the operation of attaching the percutaneous ultrasonic transducer 10 to the monitoring area, and specifically, the auxiliary end 111 is disposed along the vertical direction of the piezoelectric wafer array element body 112. The array of piezoelectric wafer array elements 112 is formed by an array of piezoelectric wafers for emitting ultrasonic signals and piezoelectric wafers for receiving ultrasonic signals. In order to increase the contact surface between the piezoelectric wafer array element body 112 and the skin and to increase the imaging range of a single piezoelectric wafer array element body 112 while saving space, the piezoelectric wafer array element body 112 is arranged in the horizontal direction, and the piezoelectric wafer array element body 112 is in a shape with a length greater than the height. As a further preference, the width of the piezoelectric wafer array element body 112 is larger than the width of the auxiliary end 111, avoiding that the auxiliary end 111 is too wide to occupy the space above the transducer body 11. The adhesive layer 14 is a self-adhesive layer formed by medical glue, and has no harm to skin. The protective film is used to protect the adhesive layer 14 and the piezoelectric wafer array element body 112. The protective film is torn so that the adhesive layer 14 and the piezoelectric wafer array element body 112 are exposed for attachment to the skin of a patient monitoring area. The adhesive layer 14 is adhered to the skin to drive the piezoelectric wafer array element body 112 to be tightly adhered to the skin of the monitoring area, so that the acquisition of real-time ultrasonic signals is completed. The adhesive plate 12 provides support for the adhesive layer 14 and the skin surface to which the transducer body 11 is adhered and secured to the monitoring area. To improve the comfort and the firmness of the adhesive, the adhesive plate 12 is preferably a flexible materialThe flexible adhesive sheet 12 is made of a material that can be firmly applied to the uneven skin surface in the monitored area. In order to further improve the accuracy of alignment of the piezoelectric element array 112 with the monitoring area, the adhesive plate 12 is preferably made of transparent material, so as not to block alignment of the piezoelectric element array 112 with the monitoring area. In order to save space and improve the alignment accuracy of the piezoelectric wafer array element 112 and the monitoring area to ensure the accuracy of ultrasonic imaging, it is further preferable that the height range of the piezoelectric wafer array element 112 is preferably 1-3cm, and the horizontal plane area of the piezoelectric wafer array element 112 is preferably 2-5cm 2 . It should be noted that, in this embodiment, the specific shapes of the adhesive plate 12 and the piezoelectric wafer array element body 112 may be the same, and the specific shapes may be a circle, a rectangle, a polygon, and other shapes, for example, the adhesive plate 12 and the piezoelectric wafer array element body 112 are two circles that are mutually sleeved; or the two elements are matched and sleeved with each other but have different shapes, for example, the sticking board 12 and the piezoelectric chip array element body 112 are round and internally sleeved with a square. The shapes of the adhesive plate 12 and the piezoelectric wafer array element body 112 are used as references for being suitable for being completely adhered to the skin surface, and the present invention is not particularly limited.
As a preferred embodiment of the present invention, as shown in fig. 3 (a) and 3 (b), the adhesive layer 14 is extended under the piezoelectric wafer array element body 112; the protective films comprise a first protective film 131 which can be detachably covered below the adhesive layer 14 and a second protective film 132 which can be detachably packaged outside the extending end of the piezoelectric wafer array element body 112; the second protective film 132 and the extending end of the piezoelectric wafer array element body 112 further comprise a coupling layer 113 with a coupling agent. In this embodiment, the adhesive layer 14 extends from the lower side of the piezoelectric wafer array element body 112, so that the detection body 11 is adhered to the monitoring area, and the lower side of the piezoelectric wafer array element body 112 can squeeze the monitoring area under the pressure of the adhesive layer 14 adhered to the skin of the monitoring area, so as to better realize the acquisition of real-time ultrasonic signals. The protective film includes a first protective film 131 detachably covering the lower part of the adhesive layer 14 and a second protective film 132 detachably encapsulated outside the extending end of the piezoelectric wafer array element body 112, as shown in fig. 3 (a) and fig. 3 (b), the second protective film 132 is a groove with an upward opening, and the first protective film 131 and the second protective film 132 enable the adhesive layer 14 to be separated from the protection of the extending end of the piezoelectric wafer array element body 112, so that the protection is not affected by each other. The coupling layer 113 is encapsulated between the second protective film 132 and the extending end of the piezoelectric chip array element body 112, so that a doctor can immediately and directly adhere to a corresponding monitoring area by tearing the second protective film 132, the couplant does not need to be coated in the monitoring area in advance, the time is saved, and the use is convenient. It should be noted that, the thickness range of the couplant layer 113 is preferably 3-8mm, which does not affect the contact detection between the piezoelectric wafer array element body 112 and the monitoring area, and provides the environment for coupling and ultrasonic signal acquisition for the piezoelectric wafer array element body 112. In order to ensure the beauty of the percutaneous ultrasonic transducer 10 and the balance of placement at the time of storage, the first protective film 131 is flush with the lower end of the second protective film 132.
As a specific example of the present invention, as shown in fig. 3 (a), the transducer body 11 is further provided with an indwelling wire 114, one end of the indwelling wire 114 is connected to the piezoelectric wafer array element body 112, the other end extends from the auxiliary end 111, and the extending end of the indwelling wire 114 is provided with a first plug 115 which is inserted and connected with the adapter 21 in a matching manner. The first plug 115 of the retention wire 114 is detachably connected with the adapter 21, so that the detachable connection between the transducer body 11 and the signal acquisition box 20 and the data communication after the connection are realized.
As another embodiment of the present invention, as shown in fig. 3 (b), the probe body 11 is further provided with a second plug 116 that is mated with the adapter 21, the second plug 116 is located above the auxiliary end 111, and the second plug 116 is electrically connected to the piezoelectric wafer array element body 112 through the auxiliary end 111. The adapter 21 of the signal acquisition box 20 is directly inserted into the second plug 116 above the auxiliary end, so that the connection and data communication between the transducer body 11 and the signal acquisition box 20 are realized, and inconvenience caused by complicated cables is avoided. For further aesthetic detection of the body 11, the second plug 116 is embedded above the auxiliary end 111, and the second plug 116 is flush with the top surface of the auxiliary end 111.
As another specific embodiment of the present invention, the auxiliary end 111 of the detecting body 11 is provided with a wireless communication module, and the controller 31 of the upper computer 30 is also provided with a wireless communication module, so that the real-time ultrasonic signals collected by the percutaneous ultrasonic transducer 10 can be directly transmitted to the controller 31 of the upper computer 30 for storage and subsequent signal processing through wireless communication between the two wireless communication modules, without intermediate transmission of the image collection box 20, and the speed of ultrasonic imaging is improved. As for the specific installation position, structure, and type of the wireless communication module of the auxiliary terminal 111, the present invention is not particularly limited, and wireless communication may be implemented.
As a preferred embodiment of the present invention, as shown in fig. 3 (a) and 3 (b), when the percutaneous ultrasonic transducer 10 is a biplane percutaneous ultrasonic transducer, the two retaining wires 114 or the two second plugs 116 are respectively two, and the two piezoelectric wafer array element bodies 112 are correspondingly matched; the transducer body 11 further includes a first switch and a second switch 118 located on the auxiliary end 111, respectively; the first switch 117 and the second switch 118 are respectively and electrically connected between one of the rest lines 114 and one of the piezoelectric wafer array element bodies 112 or respectively and electrically connected between one of the second plugs 116 and one of the piezoelectric wafer array element bodies 112. In this embodiment, the first switch 117 and the second switch 118 respectively control the start and stop of the two piezoelectric wafer array element bodies 112 of the biplane percutaneous ultrasonic transducer, so as to realize the start and stop and selection of the two ultrasonic planes of the transducer body 11. The first switch 117 and the second switch 118 may be disposed along the same horizontal plane of the auxiliary end 111, or may be disposed apart from each other in the axial direction of the auxiliary end 111.
Example 2
On the basis of the cardiac ultrasound system based on a plurality of percutaneous ultrasound transducers provided in embodiment 1, as shown in fig. 4, an embodiment of the present invention provides an ultrasound imaging method based on a plurality of percutaneous ultrasound transducers, which includes the following steps:
s10, acquiring real-time ultrasonic signals of at least four cardiac sections: the four percutaneous ultrasonic transducers are respectively and correspondingly stuck to the four monitoring areas to simultaneously acquire real-time ultrasonic signals of at least four cardiac sections;
s20, signal processing and display of real-time ultrasonic sub-images of at least four cardiac sections: the real-time ultrasonic image controller respectively carries out signal processing on the real-time ultrasonic signals of at least four heart sections sent by the signal acquisition box to obtain real-time ultrasonic images of the at least four heart sections, and the real-time ultrasonic images are output to the display screen for display;
s30, signal processing and display of real-time three-dimensional dynamic images of the whole heart: and the controller sequentially performs image cutting and synthesis on the real-time ultrasonic sub-images of at least four cardiac sections to obtain a real-time three-dimensional dynamic image of the whole heart, and outputs the real-time three-dimensional dynamic image to the display screen for display.
In this embodiment, the four percutaneous ultrasonic transducers 10 are adhered to the four monitoring areas in a dispersing manner, so as to collect real-time ultrasonic signals of at least four cardiac sections at the same time; the real-time ultrasonic signals of at least four cardiac surfaces are respectively transmitted to the signal acquisition box 20 for storage through the percutaneous ultrasonic assembly and the adapter assembly. The signal acquisition box 20 sends the stored real-time ultrasonic signals of at least four cardiac surfaces to the controller 31 of the upper computer 30 for signal processing to obtain real-time ultrasonic sub-images of at least four cardiac surfaces, the controller 31 outputs the real-time ultrasonic sub-images of at least four cardiac surfaces to the display screen for display, and meanwhile, the controller 31 sequentially performs image cutting and synthesis on the real-time ultrasonic sub-images of at least four cardiac surfaces and outputs a real-time three-dimensional dynamic image of the whole heart to the display screen for display.
Preferably, in step S30, the image cropping and compositing, as shown in fig. 5, includes the steps of:
s31, respectively cutting the real-time ultrasonic sub-images of at least four heart sections to obtain a real-time ultrasonic sub-image fragment set and storing the real-time ultrasonic sub-image fragment set;
s32, determining the range of the region to be inlaid according to the three-dimensional shape of the heart; dividing the areas to be inlaid, and outputting a plurality of single areas to be inlaid;
s33, correspondingly embedding the real-time ultrasonic sub-image fragment sets into a plurality of single areas to be embedded respectively, and outputting a plurality of real-time ultrasonic images of the single areas to be embedded;
s34, correspondingly embedding and summarizing the real-time ultrasonic images of the plurality of single areas to be embedded into the areas to be embedded, and outputting the real-time three-dimensional dynamic images of the synthesized whole heart.
In the embodiment, the range of the area to be inlaid is determined and divided to match the inlaid of the real-time ultrasonic sub-image fragments in the real-time ultrasonic sub-image fragment set, and the real-time ultrasonic images of the single area to be inlaid and the range of the area to be inlaid are further inlaid through the matching of a plurality of single area to be inlaid output by inlaying, so that the synthesized three-dimensional real-time ultrasonic image of the whole heart is output. In the process, the range of the area to be inlaid is determined and divided, so that reasonable planning of the size of the real-time ultrasonic sub-image fragments is facilitated, effective data can be kept to the greatest extent, the data quantity is reduced, and the data redundancy is greatly reduced.
As a further preference, step S33 is specifically the following steps: according to each single region to be inlaid, carrying out mosaic screening on real-time ultrasonic sub-image fragments in the real-time ultrasonic sub-image fragment set to obtain a real-time ultrasonic sub-image fragment subset corresponding to each single region to be inlaid; and carrying out color homogenizing treatment on the real-time ultrasonic sub-image fragments in the real-time ultrasonic sub-image fragment subset, and outputting a plurality of to-be-inlaid single-area real-time ultrasonic images. The mosaic screening, as shown in fig. 6, includes the following steps:
s331, screening a plurality of real-time ultrasonic sub-image fragments with overlapping areas corresponding to each single area to be inlaid in the real-time ultrasonic sub-image fragment set;
s332, determining a superposition area, and carrying out effectiveness sequence coding on a plurality of real-time ultrasonic sub-image fragments with the superposition area;
s333, respectively cutting a plurality of real-time ultrasonic sub-image fragments with overlapping areas to obtain a plurality of real-time ultrasonic sub-image fragment effective parts with effective codes;
and S334, summarizing the overlapped area and the effective parts of the real-time ultrasonic sub-image fragments, and outputting the summarized area and the effective parts as real-time ultrasonic sub-image fragment subsets corresponding to each single area to be inlaid.
In this embodiment, a plurality of real-time ultrasonic sub-image fragments with overlapping areas corresponding to each single region to be inlaid in the real-time ultrasonic sub-image fragment set are screened, so as to respectively cut the plurality of real-time ultrasonic sub-image fragments with overlapping areas, remove overlapping portions in the plurality of real-time ultrasonic sub-images collected by the plurality of percutaneous ultrasonic transducers 10, and collect one overlapping area with effective portions of the plurality of real-time ultrasonic sub-image fragments, thereby outputting a real-time ultrasonic sub-image fragment subset corresponding to each single region to be inlaid, preparing for subsequent inlaying, and reducing signal processing amount of data collection. And carrying out effectiveness sequence coding on the plurality of real-time ultrasonic sub-image fragments with the overlapping areas, so that the plurality of real-time ultrasonic sub-image fragments with the overlapping areas are identifiable, and preparation is carried out for subsequent automatic identification and accurate summarization.
As shown in fig. 7, the shading process includes the steps of:
s335, acquiring the overlapping area and radiation information of the effective parts of the plurality of real-time ultrasonic sub-image fragments, and performing radiation similarity analysis;
s336, constructing a uniform color matching model;
s337, carrying out color homogenizing treatment on the coincident area with radiation similarity and the effective parts of the fragments of the plurality of real-time ultrasonic sub-images according to the color homogenizing matching model, and outputting a plurality of to-be-inlaid single-area real-time ultrasonic images.
In the embodiment, the mosaic screening of each single area to be mosaic is beneficial to cutting and re-synthesizing the overlapped image parts in a plurality of real-time ultrasonic sub-images, so that the signal processing amount is reduced, and the accuracy of ultrasonic image synthesis is improved; meanwhile, the whole process is automatically processed, manual operation is not needed, and the working efficiency is improved. And (3) homogenizing, namely solving the problem of inconsistent local image tone in the synthesis process of the overlapping area and the effective parts of the plurality of real-time ultrasonic sub-image fragments, ensuring the tone consistency of the local image to the greatest extent, and improving the accuracy of the ultrasonic image. The process of outputting the real-time ultrasonic images of the single areas to be inlaid and correspondingly inlaying and summarizing the real-time ultrasonic images of the single areas to be inlaid into the areas to be inlaid respectively adopts a parallel processing mode, so that the working efficiency is improved. It should be noted that, regarding the establishment of the uniform color matching model, a uniform color matching model commonly used in the image processing process, for example, histogram uniform color, may be selected, and the present invention is not limited specifically.
As a further preference, the present invention may also utilize feathering of the overlapping area region to eliminate the hard edges of the inlay formation to ensure continuous uniformity of the ultrasound image.
According to the ultrasonic imaging method based on the percutaneous ultrasonic transducers, provided by the embodiment of the invention, the controller 31 sequentially performs image cutting and synthesis on the real-time ultrasonic sub-images of at least four cardiac sections to obtain the real-time three-dimensional dynamic image output display of the whole heart, so that doctors can intuitively and vividly know the real-time ultrasonic images of the heart, and auxiliary reference is provided for operation; the process of sequentially performing image clipping and synthesizing on the real-time ultrasonic sub-images of at least four cardiac surfaces by the controller 31 is based on the fragmentation processing mode of the real-time ultrasonic sub-images of at least four cardiac surfaces, and clips and re-synthesizes the ultrasonic sub-images of invalid and overlapped parts, thereby reducing the signal processing amount and being beneficial to improving the accuracy of subsequent image synthesis.
Although embodiments of the invention have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (2)
1. A cardiac ultrasound system based on a plurality of percutaneous ultrasound transducers, comprising:
the percutaneous ultrasonic transducer assembly comprises at least four percutaneous ultrasonic transducers, and the four percutaneous ultrasonic transducers are respectively and correspondingly stuck to four monitoring areas to simultaneously acquire real-time ultrasonic signals of at least four heart sections; each of the percutaneous ultrasound transducers includes:
the transducer body comprises an auxiliary end which is vertically arranged and a piezoelectric wafer array element body which is horizontally arranged; the piezoelectric wafer array element body is fixed below the auxiliary end;
the transducer body is also provided with an indwelling wire, one end of the indwelling wire is connected to the piezoelectric wafer array element body, the other end of the indwelling wire extends out of the auxiliary end, and the extending end of the indwelling wire is provided with a first plug which is matched and spliced with the adapter;
the signal acquisition box is provided with an adapter component which is in communication connection with each percutaneous ultrasonic transducer and is used for storing real-time ultrasonic signals of the at least four cardiac sections; the adapter assembly comprises at least four adapters detachably connected with the percutaneous ultrasonic transducer; the number of the adapters is greater than the number of the percutaneous ultrasonic transducers;
the detection body is also provided with a second plug which is matched and spliced with the adapter, the second plug is positioned above the auxiliary end, and the second plug passes through the auxiliary end and is electrically connected to the piezoelectric wafer array element body;
the percutaneous ultrasound transducer is a biplane percutaneous ultrasound transducer; the number of the retaining wires or the second plugs is two, and the number of the piezoelectric wafer array element bodies is correspondingly matched with two;
the transducer body further comprises a first switch and a second switch respectively positioned on the auxiliary end; the first switch and the second switch are respectively and correspondingly electrically connected between one retaining wire and one piezoelectric wafer array element body or respectively and correspondingly electrically connected between one second plug and one piezoelectric wafer array element body;
the upper computer comprises a controller and a display screen which are in communication connection, and the controller is in communication connection with the signal acquisition box; the real-time ultrasonic signals of the at least four cardiac surfaces are simultaneously transmitted to the controller through the signal acquisition box for signal processing and storage, and the real-time three-dimensional dynamic images of the whole heart synthesized by the real-time ultrasonic sub-images of the at least four cardiac surfaces are output to the display screen for display;
the four monitoring areas are respectively an upper sternum fossa area, a left sternum edge area, a cardiac apex area and a lower xiphoid area;
the sticking board is flexibly and transparently sleeved outside the array element body of the piezoelectric wafer;
an adhesive layer located below the adhesive plate; the lower part of the piezoelectric wafer array element body extends out of the adhesive layer; the method comprises the steps of,
the protective film is detachably covered below the adhesive layer and the piezoelectric wafer array element body;
the protective film comprises a first protective film which can be detachably covered below the adhesive layer and a second protective film which can be detachably packaged outside the extending end of the piezoelectric wafer array element body; and a coupling layer with a coupling agent is further arranged between the second protective film and the extending end of the piezoelectric wafer array element body.
2. A method of cardiac ultrasound imaging based on a multiple percutaneous ultrasound transducer based cardiac ultrasound system according to claim 1, characterized in that it comprises the steps of:
acquisition of real-time ultrasound signals of at least four cardiac surfaces: the four percutaneous ultrasonic transducers are respectively and correspondingly stuck to the four monitoring areas to simultaneously acquire real-time ultrasonic signals of at least four cardiac sections;
signal processing and display of real-time ultrasound sub-images of at least four cardiac slices: the controller respectively carries out signal processing on the real-time ultrasonic signals of at least four heart sections sent by the signal acquisition box to obtain real-time ultrasonic sub-images of the at least four heart sections, and the real-time ultrasonic sub-images are output to the display screen for display;
signal processing and display of real-time three-dimensional dynamic images of the whole heart: the controller sequentially performs image cutting and synthesizing on the real-time ultrasonic sub-images of the at least four cardiac sections to obtain a real-time three-dimensional dynamic image of the whole heart, and the real-time three-dimensional dynamic image is output to the display screen for display;
the image clipping and synthesizing method comprises the following steps:
cutting out real-time ultrasonic sub-images of at least four heart sections respectively to obtain a real-time ultrasonic sub-image fragment set and storing the fragment set;
determining the range of the region to be inlaid according to the three-dimensional shape of the heart; dividing the areas to be inlaid, and outputting a plurality of single areas to be inlaid;
correspondingly embedding the real-time ultrasonic sub-image fragment sets into a plurality of single areas to be embedded respectively, and outputting a plurality of real-time ultrasonic images of the single areas to be embedded;
summarizing the corresponding inlays of the plurality of single-area real-time ultrasonic images to be inlaid into the areas to be inlaid, and outputting a synthesized real-time three-dimensional dynamic image of the whole heart;
the real-time ultrasonic sub-image fragment sets are respectively and correspondingly inlaid in a plurality of single areas to be inlaid, and the output of the real-time ultrasonic images of the single areas to be inlaid comprises the following steps:
according to each single region to be inlaid, carrying out inlaid screening on real-time ultrasonic sub-image fragments in the real-time ultrasonic sub-image fragment set to obtain a real-time ultrasonic sub-image fragment subset corresponding to each single region to be inlaid;
and carrying out color homogenizing treatment on the real-time ultrasonic sub-image fragments in the real-time ultrasonic sub-image fragment subset, and outputting a plurality of to-be-inlaid single-area real-time ultrasonic images.
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| CN108742701B (en) * | 2018-03-27 | 2021-11-12 | 苏州佳世达电通有限公司 | Expansion module and expansion module for ultrasonic system |
| CN108553124B (en) * | 2018-04-08 | 2021-02-02 | 广州市红十字会医院（暨南大学医学院附属广州红十字会医院） | Ventricular volume monitoring device and method |
| CN110833432B (en) * | 2018-08-15 | 2023-04-07 | 深南电路股份有限公司 | Ultrasonic simulation front-end device and ultrasonic imaging equipment |
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