CN111243411A - Ultrasonic image data imaging method and ultrasonic analog simulation system - Google Patents
Ultrasonic image data imaging method and ultrasonic analog simulation system Download PDFInfo
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Abstract
The invention provides an ultrasonic image data imaging method and an ultrasonic analog simulation system, wherein the ultrasonic image data imaging method comprises the following steps: firstly, analyzing medical digital imaging and communication files acquired by ultrasonic scanning equipment into data sequence frame files; secondly, calculating the data sequence frame through a shape algorithm to generate corresponding voxel image data; step three, converting the voxel image data into corresponding voxel data; and step four, reading section imaging of voxel data is carried out by using an imaging space positioning device, and imaging of the simulated real ultrasonic instrument equipment is displayed on a display. The invention converts the ultrasonic image data acquired on real ultrasonic instrument equipment into voxel image data through an imaging algorithm, and the converted data can be visualized and presented on non-ultrasonic instrument equipment, thereby providing an efficient and cheap mode for ultrasonic training.
Description
Technical Field
The invention relates to an ultrasonic image data imaging method and an ultrasonic analog simulation system.
Background
With the progress of science and technology, the continuous development of ultrasonic medicine and increasingly complex medical environment, the traditional teaching mode is not suitable for the requirements of modern medical treatment. The medical simulation education can change the traditional ' teacher's undertaking ' education mode in the past, and by means of high-end simulators and simulation equipment, medical students or young doctors can repeatedly practice the education mode, are skilled in mastering clinical knowledge, improve professional skills, guarantee the safety of patients, and improve the overall medical safety and medical quality, which is undoubtedly the development trend of future medical education.
In the field of ultrasound medicine, medical ultrasound imaging diagnosis, as a professional diagnostic method, requires a large amount of case data for sonographers to perform ultrasound specialist teaching and ultrasound image databases. The prior art carries out ultrasonic simulation reduction to sector ultrasonic image data through CT images generated on real ultrasonic instrument equipment, and then guides the data into local software for visual presentation. Meanwhile, the method cannot be used in a large area due to radioactive factors, and cannot be used for special groups such as fetuses and the like.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing ultrasonic image data has the problems of long imaging operation time, incapability of being used in many situations and low imaging efficiency.
In order to solve the above problems, the technical solution of the present invention is to provide an ultrasound image data imaging method, which is characterized by comprising the following steps:
firstly, analyzing medical digital imaging and communication files acquired by ultrasonic scanning equipment into data sequence frame files;
secondly, calculating the data sequence frame through a shape algorithm to generate corresponding voxel image data;
step three, converting the voxel image data into corresponding voxel data;
and step four, reading section imaging of voxel data is carried out by using an imaging space positioning device, and imaging of the simulated real ultrasonic instrument equipment is displayed on a display.
Preferably, in the analysis process in the first step, the data sequence frame file in the general picture file format is obtained through medical image data analysis and three-dimensional reconstruction software analysis.
Preferably, the shape algorithm is specifically a three-dimensional mathematical model of a rectangular body, a cylinder or a sphere space, and based on a model space coordinate system, the operation is performed according to the type of the data sequence frame file to generate corresponding voxel image data.
Preferably, the data sequence frame file is restored to a spherical volume or a rectangular volume or a cylindrical volume by an image three-dimensional reconstruction method to generate corresponding three-dimensional voxel image data.
Preferably, image slicing is carried out from the three-dimensional spherical volume or the rectangular volume or the column volume by the imaging space positioning device by using a slice rendering technology, and a sector volume is intercepted to obtain voxel data corresponding to a medical digital imaging and communication file, and the voxel data is connected with one or more non-ultrasonic instrument device displays and synchronously displayed.
Preferably, the voxel data after slice truncation is connected with one or more non-ultrasonic instrument device displays and a user-worn VR device through a high-speed network or an HDMI interface for synchronous display.
Another technical solution of the present invention is to provide an ultrasound simulation system, which is characterized in that: comprises a medical anthropomorphic dummy and a probe used for scanning the medical anthropomorphic dummy;
the imaging space positioning device is used for receiving the space positioning information coordinate position signal and transmitting the space positioning information coordinate position signal to the computer host;
the computer host is used for running analog simulation software carrying the ultrasonic image data imaging method and installing a corresponding software driver of the electromagnetic space positioner;
and the display is connected with the computer host and is used for displaying the training content list and parameter setting and observing the real-time image imaging and the coordinate position of the probe.
Preferably, the imaging space positioning device is an electromagnetic positioning device and comprises a magnetic block, an electromagnetic space positioner and a sensor, the probe is arranged on the sensor, the magnetic block is arranged in the medical simulator and used for receiving signals of the sensor, and the electromagnetic space positioner is respectively connected with the computer host, the sensor and the magnetic block.
Preferably, the ultrasonic simulation system comprises simulation software of the VR-version ultrasonic image data imaging method and VR equipment worn by a user, wherein the VR equipment worn by the user consists of an electromagnetic space positioner, a VR head display and a handle controller, the electromagnetic space positioner and the handle controller are respectively connected with the VR head display, the VR head display is connected with a computer host, and the computer host carries the simulation software of the VR-version ultrasonic image data imaging method.
Preferably, data transmission is carried out between the electromagnetic space locator and the handle controller and between the VR head display in a Bluetooth or wireless mode.
Compared with the prior art, the invention has the beneficial effects that:
the invention can analyze the ultrasonic image data collected on real ultrasonic instrument equipment into sequence frames, then obtains voxel image data by utilizing a shape algorithm, and carries out section interception by matching with an electromagnetic space locator to form a visual image. The invention can restore the ultrasonic voxel data in real, collect different voxel data aiming at different positions and organs of a human body and establish a case database.
On the basis of static ultrasonic data imaging, the dynamic ultrasonic data imaging method is characterized in that compared with static bitmap output in a data sequence frame link, dynamic ultrasonic data is 200-fold and 300-fold.
The invention can provide an efficient and cheap mode for ultrasonic training, can conveniently acquire a large amount of real ultrasonic pathological data, establishes a voxel ultrasonic image database and is applied to ultrasonic simulation teaching. The ultrasonic examination system has the advantages that comprehensive ultrasonic examination is carried out on a simulated patient through a truthful exercise mode, trainees can quickly master ultrasonic examination skills in a short time through repeated exercise, the learning interest of students is improved, basic knowledge is further strengthened, the ultrasonic practice operation capability is improved, the training time is shortened, the doctor-patient contradiction is reduced, normalized, systematized and standardized learning and examination are facilitated, and the ultrasonic examination system has important clinical application value.
Drawings
FIG. 1 is a flow chart of a method for imaging ultrasound image data according to the present invention;
FIG. 2 is a schematic diagram of three spatial mathematical models;
FIG. 3 is a schematic diagram of a process of obtaining voxel data by spherical volume truncation;
FIG. 4 is a schematic diagram of an ultrasonic simulation system of the present invention;
FIG. 5 is a schematic structural diagram of an electromagnetic positioning apparatus;
fig. 6 is a schematic diagram of VR device connections.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the method for imaging ultrasound image data of the present invention includes the following steps:
firstly, analyzing medical digital imaging and communication files acquired by ultrasonic scanning equipment into data sequence frame files; the ultrasound scanning device generates different images according to different scanned parts of a patient in the normal use process, so that doctors can conveniently diagnose the organ state of the patient in a non-invasive mode, the acquired pure data representing the volume is a file stored by using DICOM (digital Imaging and Communications in medicine), namely medical digital Imaging and communication, and the ultrasound scanning device is widely applied to the radiomedical treatment, cardiovascular Imaging and radiodiagnosis and treatment equipment (X-ray, CT, nuclear magnetic resonance, ultrasound and the like), and medical images of all patients are stored in a DICOM file format. This format contains phi (protected health information) information about the patient, e.g. name, gender, age, and other image related information such as device information for capturing and generating images, some context related information for medical treatment, etc. The medical image facility generates a DICOM file, and the doctor reads and diagnoses problems found in the image using a DICOM reader (computer software capable of displaying DICOM images).
After the medical digital imaging and communication file is obtained, image data analysis can be carried out by restoring pixel information, and data analysis can also be carried out by adopting third-party medical image data analysis and three-dimensional reconstruction software to obtain a data sequence frame file in a general picture file format. If MATLAB, 3D Slice and the like are selected, MATLAB is selected in the embodiment, a three-dimensional mathematical structure is reconstructed through C + +, and the mathematical software integrates a plurality of powerful functions of numerical analysis, matrix calculation, scientific data visualization, modeling and simulation of a nonlinear dynamic system and the like into an easy-to-use window environment, so that a comprehensive solution is provided for scientific research, engineering design and a plurality of scientific fields which need to carry out effective numerical calculation, the editing mode of the traditional non-interactive programming language (such as C, Fortran) is broken away to a great extent, and a sequence frame file of BMP suffix is obtained after MATLAB analysis. The sequence frame after analysis is rectangular compressed data, and about 200 sequence frame files are obtained from one organ conventionally.
Secondly, calculating the data sequence frame through a shape algorithm to generate corresponding voxel image data; the shape algorithm is specifically to construct a three-dimensional mathematical model of a rectangular body, a cylinder or a sphere space, and restore the data sequence frame file into a sphere volume, a rectangular volume or a column volume according to the type of the data sequence frame file by an image three-dimensional reconstruction method based on a space coordinate system to generate corresponding three-dimensional voxel image data. The method comprises the steps of constructing mathematical models of rectangular bodies, cylinders or sphere spaces, scanning different parts of a human body according to different probes, summarizing and inducing the three mathematical models to be distributed for ultrasonic image data corresponding to liver, spleen, biliary tract, pancreas, gastrointestinal tract, urinary system, gynecology, obstetrics, superficial organs, musculoskeletal system, peripheral blood vessels, interventional ultrasound and retroperitoneal interstitial large blood vessels according to different shapes.
Step three, converting the voxel image data into corresponding voxel data; image slicing is carried out on a three-dimensional spherical volume through an imaging space positioning device by using a slice rendering technology, a sector volume is intercepted, namely voxel data corresponding to ultrasonic image Data (DICOM) acquired on real ultrasonic instrument equipment, a rectangular space coordinate system and a cylindrical space coordinate system have the same principle, and a spherical space coordinate system is taken as more common image data.
And step four, reading section imaging of voxel data is carried out by using an imaging space positioning device, and imaging of the simulated real ultrasonic instrument equipment is displayed on a display.
In the technology, the collected position object belongs to static three-dimensional ultrasound (static 3D), dynamic three-dimensional ultrasound (dynamic 3D) and real-time three-dimensional ultrasound (real time3D namely 4D), the dynamic three-dimensional ultrasound data is generally collected by the imaging and restoring of the ultrasound image data of the heart vessels and fetuses of human bodies, and the requirements on the original data collection speed, data compression and operation are further increased. Dynamic three-dimensional ultrasound is generally used for ultrasonic image data of heart ultrasonic performance and normal values, ventricular function measurement, heart valvular diseases, coronary atherosclerotic heart diseases, aortic diseases, cardiomyopathy, pericardial diseases, heart space occupying diseases, congenital heart diseases, normal/abnormal pregnancy ultrasonic performance, placenta umbilical cord abnormality, fetal malformation and the like.
As shown in fig. 4 to 6, an ultrasound simulation system is installed based on an ultrasound image data imaging method of the present invention, and the ultrasound simulation system includes a computer host, a display, an imaging space positioning device, a 3D printing probe, a medical simulator, and a VR device.
The method is characterized in that whether virtual reality equipment needs to be worn to perform training operation in an immersive environment or not is distinguished, and the software is packaged into an exe file.
For a certain requirement of the computer host configuration, the following main configurations are provided:
| processor with a memory having a plurality of memory cells | i7-9700 |
| Display card | GTX 10806G video memory |
| Memory device | 16GB |
| Hard disk | 256GB SSD 7200 rpm |
In addition, according to the software requirement, the computer host needs to configure two displays to transmit two pictures: one is a training content list and a parameter setting interface; the other is real-time imaging of the frames viewed by the user and the coordinate position of the probe during scanning with the probe.
The imaging space positioning device is an electromagnetic positioning device and comprises a magnetic block, an electromagnetic space positioner and a sensor, a software driver corresponding to the electromagnetic space positioner is required to be installed in a computer host firstly and is used for detecting whether equipment is normally connected or not and can normally run or not, a 3D printing probe is installed on the sensor, the magnetic block is placed in a groove in a medical simulator and is used for receiving signals of the sensor, and the electromagnetic space positioner is used for connecting the magnetic block, the sensor and the computer host together.
3D printing probe: according to the content of the ultrasonic simulation training, actual equipment is simulated, different ultrasonic probes are matched with different human body parts, in order to better simulate the front, back, left and right states in the ultrasonic scanning process, probes which are not in regular shapes are manufactured by 3D printing and are installed on a sensor of an electromagnetic space positioner.
The medical anthropomorphic dummy: the invention relates to a medical simulator for medical simulation education, which is 1:1 real person in size and is divided into a plurality of age states according to actual conditions. In the future, medical simulators with different physical signs are selected according to the increase of pathological databases aiming at different pathological states.
The ultrasonic simulation system comprises simulation software of a VR-version ultrasonic image data imaging method and VR equipment worn by a user, and is used for simulating ultrasonic operation training in an ultrasonic room environment of a hospital. VR equipment comprises electromagnetism space locator, the first apparent, the handle controller of VR, and electromagnetism space locator and handle controller are connected with the first apparent of VR respectively, and the first apparent computer that connects of VR, computer operation carry on the simulation software that has VR version ultrasonic image data imaging method, and data transmission is carried out through bluetooth or wireless mode between electromagnetism space locator and handle controller and the first apparent.
Claims (10)
1. An ultrasound image data imaging method, comprising the steps of:
firstly, analyzing medical digital imaging and communication files acquired by ultrasonic scanning equipment into data sequence frame files;
secondly, calculating the data sequence frame through a shape algorithm to generate corresponding voxel image data;
step three, converting the voxel image data into corresponding voxel data;
and step four, reading section imaging of voxel data is carried out by using an imaging space positioning device, and imaging of the simulated real ultrasonic instrument equipment is displayed on a display.
2. A method of imaging ultrasound image data according to claim 1, characterized by: in the first step, the analysis process is to obtain a data sequence frame file in a general picture file format through medical image data analysis and three-dimensional reconstruction software analysis.
3. A method of imaging ultrasound image data according to claim 1, characterized by: the shape algorithm is specifically to construct a three-dimensional mathematical model of a rectangular body, a cylinder or a sphere space, and based on a model space coordinate system, the shape algorithm is operated according to the type of a data sequence frame file to generate corresponding voxel image data.
4. A method of imaging ultrasound image data according to claim 3, characterized by: and restoring the data sequence frame file into a spherical volume or a rectangular volume or a column volume by an image three-dimensional reconstruction method to generate corresponding three-dimensional voxel image data.
5. A method of ultrasound image data imaging as claimed in claim 3 or 4, characterized by: and image slicing is carried out from the three-dimensional spherical volume or the rectangular volume or the column volume through the imaging space positioning device by using a slice rendering technology, a sector volume is intercepted to obtain voxel data corresponding to the medical digital imaging and communication file, and the voxel data is connected with one or more non-ultrasonic instrument equipment displays and synchronously displayed.
6. The method of claim 5, wherein the step of: and connecting the voxel data obtained after the slicing interception with one or more non-ultrasonic instrument device displays and VR equipment worn by a user through a high-speed network or an HDMI interface for synchronous display.
7. An ultrasound analog simulation system to which an ultrasound image data imaging method according to claim 1 is applied, characterized in that: comprises a medical anthropomorphic dummy and a probe used for scanning the medical anthropomorphic dummy;
the imaging space positioning device is used for receiving the space positioning information coordinate position signal and transmitting the space positioning information coordinate position signal to the computer host;
the computer host is used for running analog simulation software carrying the ultrasonic image data imaging method and installing a corresponding software driver of the electromagnetic space positioner;
and the display is connected with the computer host and is used for displaying the training content list and parameter setting and observing the real-time image imaging and the coordinate position of the probe.
8. The ultrasound simulation system of claim 7, wherein: the imaging space positioning device is an electromagnetic positioning device and comprises a magnetic block, an electromagnetic space positioner and a sensor, the probe is arranged on the sensor, the magnetic block is arranged in the medical simulator and used for receiving signals of the sensor, and the electromagnetic space positioner is respectively connected with the computer host, the sensor and the magnetic block.
9. The ultrasound simulation system of claim 7, wherein: the VR-type ultrasonic image data imaging method comprises the steps of carrying out VR-type ultrasonic image data imaging on a computer host, and carrying out analog simulation software of the VR-type ultrasonic image data imaging method on the computer host.
10. The ultrasound simulation system of claim 9, wherein: data transmission is carried out between the electromagnetic space positioner, the handle controller and the VR head display in a Bluetooth or wireless mode.
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| CN111863249A (en) * | 2020-08-07 | 2020-10-30 | 北京大学深圳医院 | Virtual reality ultrasonic image simulation training method and system |
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| CN111863249A (en) * | 2020-08-07 | 2020-10-30 | 北京大学深圳医院 | Virtual reality ultrasonic image simulation training method and system |
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Application publication date: 20200605 |