CN115919360A - Ultrasonic 3D Whole Body Imaging System - Google Patents

Abstract

The invention provides an ultrasonic three-dimensional whole body radiography system, which comprises an ultrasonic wave guided medium container, a movable ultrasonic probe and an ultrasonic radiography instrument. The ultrasonic wave guided wave medium container has a detection space, and the detection space is filled with a guided wave medium and is used for the immersion of the detected body. The movable ultrasonic probe comprises a linear carrying platform and a ring-shaped ultrasonic probe array arranged on the linear carrying platform, the ring-shaped ultrasonic probe array comprises a plurality of probe units which are integrated into a ring-shaped array, and the ring-shaped ultrasonic probe moves along the detection space from the linear carrying platform. The ultrasonic imaging apparatus constructs a three-dimensional image model according to the moving speed of the linear carrying platform and the data fed back by the annular ultrasonic probe. The invention carries out three-dimensional whole-body radiography on the patient through the ultrasonic probe groups, can carry out multi-dimensional image reconstruction aiming at the tissues which the ultrasonic wave is difficult to pass through and avoids the defect of insufficient imaging.

Description

Ultrasonic 3D Whole Body Imaging System

technical field

The invention relates to a three-dimensional whole-body imaging system, in particular to a system for performing three-dimensional whole-body imaging by using ultrasonic waves.

Background technique

In recent years, with the rapid development of the biomedical industry, biomedical technology has gradually made further breakthroughs. Generally, when performing three-dimensional imaging of patients, most of them use nuclear magnetic resonance to expose the patient to a magnetic field and irradiate the patient with appropriate electromagnetic waves to change the rotation and arrangement of hydrogen atoms and make them resonate, and then analyze released electromagnetic waves. Although nuclear magnetic resonance is less harmful to the human body than X-ray and tomographic scanning, however, the electromagnetic energy of the large-angle radio frequency field emission used in the focusing or measurement of nuclear magnetic resonance may be converted into heat energy in the patient's tissue , to raise the temperature of the tissue, it is still possible to cause harm to the human body.

Compared with nuclear magnetic resonance, ultrasound is non-invasive and non-radioactive, so it is widely used in medical treatment. Especially in the field of obstetrics, due to the sensitivity of the fetus to radiation, diagnostic equipment such as X-rays and tomographic scans are basically not used on the fetus or mother. At this time, ultrasonic imaging technology has become the best choice.

Compared with past technologies, ultrasonic scanning has the following advantages and effects: 1. No radioactivity, and is safer than X-rays, tomographic scans, and nuclear magnetic resonance. 2. Real-time performance, the image seen is real-time, and there is no need to wait for film development or digital imaging, which not only saves time, but also can be monitored in real time, and can be applied in the cardiovascular field to measure blood flow velocity and diagnose pathological changes .

However, the existing ultrasonic detection is generally two-dimensional detection. Even if the lesion can be quickly diagnosed with the help of ultrasound, all of them are local non-whole body contrast images of the human body. (such as hard tissue and bone) are insufficient in penetrability and imaging, so that the ultrasound imaging of the brain is extremely limited, because the difference in acoustic impedance is too large, when there is gas between the probe and the tissue to be probed, ultrasound Image quality is poor. Due to the interference of gastrointestinal gas in front, it is very difficult to image the pancreas, and it is impossible to image the lungs (unless it is to detect pleural effusion and tumor); in addition, it is also limited by the detection depth of ultrasound, which makes imaging of structures far away from the body surface Difficulty, especially in obese patients. As a result, the effect of medical ultrasound examination is greatly reduced.

Contents of the invention

To achieve the above purpose, the present invention provides an ultrasonic three-dimensional whole-body imaging system, which includes an ultrasonic waveguide medium container, an array of ultrasonic probes and an ultrasonic contrast apparatus. The ultrasonic waveguide medium container has a detection space, and the waveguide medium is filled and arranged in the detection space, and is used for immersion of specimens. The ultrasonic probe array is arranged inside the ultrasonic waveguide medium container, and the ultrasonic probe array includes a plurality of probe units integrated into a ring array, which is arranged around the detection space. The ultrasonic imaging apparatus constructs a three-dimensional image model through the data fed back by each pixel of the ultrasonic probe array.

Optionally, the wave guiding medium is water, degassed water, developer or wave guiding glue.

Optionally, a sound insulation layer is arranged on the ultrasonic waveguide medium container.

Another object of the present invention is to provide an ultrasonic three-dimensional whole-body imaging system, which includes an ultrasonic waveguide medium container, a mobile ultrasonic probe, and an ultrasonic contrast apparatus. The ultrasonic waveguide medium container has a detection space, and the waveguide medium is filled and arranged in the detection space, and is used for immersion of specimens. The mobile ultrasonic probe includes a linear carrier and a ring-shaped ultrasonic probe array arranged on the linear carrier. The ring-shaped ultrasonic probe array includes a plurality of probe units integrated into a ring-shaped array. The ultrasonic probe moves along the detection space through the linear stage. The ultrasonic imaging apparatus constructs a three-dimensional image model according to the moving speed of the linear carrier and the data fed back by the annular ultrasonic probe.

Optionally, the wave guiding medium is water, degassed water, developer or wave guiding glue.

Optionally, a sound insulation layer is arranged on the ultrasonic waveguide medium container.

Therefore, compared with the prior art, the present invention has the following advantages:

1. The present invention performs three-dimensional whole-body radiography on patients through an array of ultrasonic probes, and can perform multi-dimensional image reconstruction for tissues that are difficult for ultrasonic waves to pass through, avoiding the lack of insufficient imaging.

2. The present invention performs three-dimensional whole-body radiography on the patient through an array of ultrasonic probes, which can effectively avoid the possibility of harm to the human body.

3. The present invention can directly output the three-dimensional image of the patient or the affected part through the array of ultrasonic probes, without the conversion of the two-dimensional image.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a schematic block diagram of a first embodiment of the present invention.

Fig. 2 is a schematic view of the appearance of the first embodiment of the present invention.

FIG. 3 is a schematic block diagram of a second embodiment of the present invention.

Fig. 4 is a schematic diagram of the appearance of the second embodiment of the present invention.

Explanation of reference signs:

100 Ultrasonic three-dimensional whole-body imaging system

10A Ultrasonic waveguide wave dielectric container

11A waveguide medium

12A Sound insulation layer

20A Ultrasonic probe array

21A Probe unit

30A Ultrasonic Contrast Apparatus

S1 detection space

200 Ultrasonic three-dimensional whole-body imaging system

10B Ultrasonic waveguide wave dielectric container

11B waveguide medium

20B Mobile Ultrasonic Probe

21B linear stage

22B Ring type ultrasonic probe array

221B Probe unit

30B Ultrasonic Contrast Apparatus

S2 detection space

Detailed ways

The detailed description and technical content of the present invention are described as follows with respect to the accompanying drawings. Furthermore, for the convenience of description, the proportions of the drawings in the present invention are not necessarily drawn according to the actual scale. These drawings and their proportions are not intended to limit the scope of the present invention, and are described here first.

A specific embodiment is given below to provide a detailed description of the technical content of the present invention. Please refer to FIGS.

This embodiment discloses an ultrasonic three-dimensional whole-body imaging system, including an ultrasonic three-dimensional whole-body imaging system 100 , including an ultrasonic waveguide medium container 10A, an ultrasonic probe array 20A, and an ultrasonic imaging device 30A.

The ultrasonic waveguide medium container 10A has a detection space S1, and the detection space S1 is filled with a waveguide medium 11A for immersion of a specimen. In a preferred embodiment, the ultrasonic waveguide medium container 10A is provided with a sound insulation layer 12A, the sound insulation layer 12A can be a sound-absorbing material or a noise-reducing material, and is arranged on the ultrasonic waveguide medium container 10A opposite to the ultrasonic wave Any position of the probe array 20A (such as outside, inside, inside the casing) is used to block the ultrasonic probe array 20A from the outside. In order to achieve a better detection effect, the waveguide medium 11A is water, degassed water, developer or waveguiding glue, etc., which are not limited in the present invention.

The ultrasonic probe array 20A is arranged inside the ultrasonic waveguide medium container 10A, and the ultrasonic probe array 20A includes a plurality of probe units 21A integrated into a ring array (the number is L _th * H _th ), and the ring It is provided on the peripheral side in the detection space S1.

In medical sonography, short, intense sound pulses produced by phased arrays of piezoelectric transducers (usually ceramic) create sound waves. Both the wires and the transducer are housed in the probe unit 21A, and the electrical pulses cause the ceramic to oscillate producing a series of sound pulses. The frequency of sound waves can be expressed as any frequency in the range of 1 to 13 MHz, which is far beyond the frequency that the human ear can hear. The above-mentioned ultrasonic generally refers to any sound wave whose frequency exceeds the range that can be heard by the human ear. The purpose of medical ultrasound is to combine the sound waves scattered by the transducer to produce a single focused arc-shaped sound wave. The higher the frequency, the shorter the corresponding wavelength, and the higher the resolution of the resulting image. But as the frequency of the sound wave increases, the sound wave decays faster. So in order to probe deeper tissue, it is better to use lower frequency (3-5 MHz).

The surface of the probe unit 21A is coated with rubber in order to efficiently transmit sound waves into the specimen (ie, impedance matching). Sound waves are partially reflected back to the probe from interfaces between different tissues, known as echoes, and sound waves scattered by very small structures also produce echoes.

When the echo is received, the sound wave returns to the probe unit 21A, which is similar to the sound wave emitted by the probe unit 21A, but the process is reversed. The returned sound waves make the transducer of the probe unit 21A oscillate and convert the oscillation into electrical pulses. The pulses are sent from the probe unit 21A to the ultrasound contrast apparatus 30A, and processed into digital images by the ultrasound contrast apparatus 30A.

The ultrasonic imaging apparatus 30A is an image processing device, which constructs a three-dimensional image model through data fed back by each pixel (probe unit 21A) of the ultrasonic probe array 20A. The ultrasonic imaging apparatus 30A mainly receives three different parameters of the ultrasonic probe array 20A, including the probe unit 21A that receives the echo (that is, the responding array position), the signal strength of the echo, and the flight time (response time) of the ultrasonic wave.

After the above three data are obtained by the ultrasonic imaging apparatus 30A, the three-dimensional model of the object can be reconstructed by the above data. In order to establish the three-dimensional model in the image, the response of multiple probe units 21A can be carried out by time-sharing and multitasking, and the coordinates of a single pixel can be established by the position of the probe unit 21A of the response and the time of flight of the ultrasonic wave (that is, the coordinates obtained in the three-dimensional space Relative coordinates or world coordinates), when the image is converted into a three-dimensional image, it must be corrected corresponding to the position of the probe unit 21A to map to the three-dimensional space, for example, setting the reference point of the world coordinate system and performing the mapping operation based on the reference point; by The signal strength of the echo and the time of flight of the ultrasonic wave can establish the tissue density in different regions and construct the tissue layer in depth. By setting a specific threshold, the reconstructed 3D image can be filtered, and the image of the region of interest can be obtained separately. Imaging (such as blood system, organ structure, pathological tissue, benign and malignant tumors, etc.). In addition, the depth of image penetration (i.e. sampling depth) can be changed by setting the power and frequency of ultrasound, so that relatively shallow or deep images can be reconstructed. In another preferred embodiment, the image can be filled with different grayscale values or colors by setting different specific thresholds, so as to highlight the images of individual tissues.

In addition to the above-mentioned algorithm, in a preferred embodiment, the present invention can also be used in models such as single-input multiple-output (SIMO), multiple-input single-output (MISO), multiple-input multiple-output (MIMO), etc., in the present invention No restrictions are imposed.

In this embodiment, the ultrasonic imaging apparatus 30A is preset to medically assume that the speed of sound is constant at 1540 m/s around the ultrasonic probe array 20A of the object to be inspected. Although it is still possible to lose part of the sound energy due to the echo, it has little effect on the attenuation caused by the sound wave being absorbed.

Give another specific embodiment below and propose detailed description, the difference between this embodiment and the previous embodiment mainly lies in the setting form of the ultrasonic probe array, and other identical parts will not be described in detail below, please refer to Fig. 3 and Fig. 4 , is a schematic block diagram and a schematic appearance diagram of the second embodiment of the present invention, as shown in the figure:

This embodiment discloses an ultrasonic three-dimensional whole-body imaging system 200, which includes an ultrasonic waveguide medium container 10B, a mobile ultrasonic probe 20B, and an ultrasonic imaging device 30B.

The ultrasonic waveguide medium container 10B has a detection space S2, and the detection space S2 is filled with a waveguide medium 11B for immersion of the sample. In a preferred embodiment, the ultrasonic waveguide medium container 10B is provided with a sound-insulating layer, which can be a sound-absorbing material or a noise-reducing material, and is arranged on the ultrasonic waveguide medium container 10B opposite to the mobile ultrasonic wave Any position of the probe 20B (such as outside, inside, inside the housing) is used to block the movable ultrasonic probe 20B from the outside. In order to achieve a better detection effect, the waveguide medium 11B is water, degassed water, developer or waveguide glue, etc., which are not limited in the present invention.

The mobile ultrasonic probe 20B includes a linear carrier 21B and a ring-shaped ultrasonic probe array 22B arranged on the linear carrier 21B. The ring-shaped ultrasonic probe array 22B includes a plurality of probe units 221B. It becomes a ring-shaped array, and the ring-shaped ultrasonic probe array 22B reciprocates along the detection space S2 through the linear carrier 21B. In order to reconstruct the three-dimensional model, the annular ultrasonic probe array 22B, in addition to feeding back three different parameters of the probe unit 221B that received the echo (that is, the array position of the response), the signal strength of the echo, and the time-of-flight (response time) of the ultrasonic wave , to further feed back the moving speed of the linear carrier 21B, and correct the corresponding array position through the moving speed.

The ultrasonic imaging apparatus 30B is an image processing device, which constructs a three-dimensional image model through the data fed back by each pixel of the annular ultrasonic probe array 22B. The ultrasonic imaging apparatus 30B mainly receives four different parameters of the ring-shaped ultrasonic probe array 22B, including the probe unit 221B that receives the echo (that is, the responding array position), the moving speed of the linear carrier, the signal strength of the echo, The flight time (response time) of sound waves.

To sum up, the present invention performs three-dimensional whole-body imaging on patients through an array of ultrasonic probes, and can perform multi-dimensional image reconstruction for tissues that are difficult for ultrasonic waves to pass through, avoiding the lack of insufficient imaging. In addition, the present invention performs three-dimensional whole-body radiography on the patient through an array of ultrasonic probes, which can effectively avoid the possibility of harming the human body. Furthermore, the present invention can directly output the three-dimensional image of the patient or the affected part through the array of ultrasonic probes, without the conversion of the two-dimensional image.

The present invention has been described in detail above, but the above-described content is only a preferred embodiment of the present invention, and should not limit the scope of the present invention with this, that is, all equivalents made according to the patent scope of the present invention Changes and modifications should still fall within the scope of patent coverage of the present invention.

Claims (3)

1. An ultrasonic three-dimensional whole body imaging system, comprising:

an ultrasonic wave guided wave medium container, which has a detection space filled with a guided wave medium and used for the immersion of the specimen;

a movable ultrasonic probe, including a linear carrier and a ring-shaped ultrasonic probe array arranged on the linear carrier, the ring-shaped ultrasonic probe array including a plurality of probe units integrated into a ring-shaped array, the ring-shaped ultrasonic probe moving along the detection space from the linear carrier; and

an ultrasonic imaging instrument, which constructs a three-dimensional image model according to the moving speed of the linear carrying platform and the data fed back by the annular ultrasonic probe.

2. The ultrasonic three-dimensional whole body imaging system of claim 1, wherein the wave-guiding medium is water, de-aerated water, developer or wave-guiding glue.

3. The ultrasonic three-dimensional whole body imaging system according to claim 1, wherein an acoustic insulation layer is disposed on the ultrasonic guided wave medium container.

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