CN106137256B - Ultrasonic imaging performance test apparatus and method - Google Patents
Ultrasonic imaging performance test apparatus and method Download PDFInfo
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- CN106137256B CN106137256B CN201510175247.1A CN201510175247A CN106137256B CN 106137256 B CN106137256 B CN 106137256B CN 201510175247 A CN201510175247 A CN 201510175247A CN 106137256 B CN106137256 B CN 106137256B
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Abstract
The invention discloses a kind of ultrasonic imaging performance test apparatus and ultrasonic imaging performance test methods, ultrasonic imaging performance test apparatus includes: control box, the imitated NDVI equipped with imitative blood vessel, stepper motor, flywheel, tape guide wheel and Doppler's tape, the scanning probe imitated NDVI of supersonic imaging apparatus, simultaneously, supersonic imaging apparatus carries out imaging to the motion state of Doppler's tape and shows, by comparing the actual motion state of the motion state of imaging display and Doppler's tape, the analysis result of the performance parameter of supersonic imaging apparatus is obtained.Since to be placed in imitating for imitated NDVI intravascular for Doppler's tape, its movement not will drive other mediums and move together, so that the motion conditions for only Doppler's tape that supersonic imaging apparatus detects, unnecessary interference is avoided, can correctly reflect the actual imaging performance of supersonic imaging apparatus.
Description
Technical field
The present invention relates to ultrasonic imaging technique field more particularly to a kind of ultrasonic imaging performance test apparatus and methods.
Background technique
When ultrasonic wave emission source and receiver have relative motion, frequency of sound wave and tranmitting frequency received by receiver
Different, this phenomenon is known as Doppler effect.Ultrasound Doppler's method imaging is exactly the Doppler effect using ultrasonic wave, from
Fluid exterior obtains the information of fluid motion speed and movement velocity distribution, is processed and displayed.It has been widely used in stream
It is applied to the inspection of blood flow, heart and obstetrics etc. in terms of the test of body motion information, especially medicine.As medical supersonic at
As a variety of instruments such as equipment, transcranial Doppler blood flow analysis instrument, sound fetal heart detector are clinically widely used.
When having the particle to the ultrasonic wave generation scattered signal of transmitting in fluid, according to Doppler effect, that is, scatter
Frequency shift (FS), that is, Doppler frequency shift f will be generated between frequency and tranmitting frequencyd, it is given by:
fd=2vf0cosθ/C
V is the movement velocity of scatterer in above formula, and C is the speed of ultrasonic wave, and θ is the angle of ultrasonic wave acoustic beam and fluid.
Frequency displacement is directly proportional to fluid velocity it can be seen from formula, if detection fd can acquire v.
Ultrasonic duplex system is handled using the information of above-mentioned principle fluid motion, carries out ultrasonic imaging.For
Colorful ultrasonic rheography (CFM, i.e. Color Flow Mapping or CDFI, i.e. Color DopplerFlow
Imagining), coloud coding is carried out to the fluid velocity of acquisition and velocity profile information, in corresponding position coding colors
Colour display screen shows fluid velocity figure；And for ultrasonic Doppler spectrogram, Fast Fourier Transform (FFT) is carried out, display fluid becomes at any time
The fluid velocity spectrogram of change obtains the speed and velocity profile information of internal fluid.Ultrasonic Doppler spectrogram has impulse wave
Doppler spectrum and two kinds of continuous wave Doppler spectrogram, the former the advantages of be the speed and speed that can show selected location
Distributed intelligence, and be that can show higher blood flow velocity the advantages of the latter.Medically, using ultrasonic color flow figure and frequency
Spectrogram can show or measure the information of blood flow movement in blood vessel and internal organs, speed and VELOCITY DISTRIBUTION, and calculate the relevant heart
Blood vessel parameter obtains clinical application effect to carry out medical diagnosis on disease.
However, due to various reasons, including theoretic hypothesis, idealization processing and limitation of technology etc., how to determine
The quantitative measurment color Doppler echocardiography performance of supersonic imaging apparatus includes color blood-stream image sensitivity, ultrasonic Doppler frequency
The minimum blood flow detection sensitivity of spectrogram, peak veloity,PV Detection capability, " eigenfrequency spectrum broadens (Intrinsic
Spectral Broadening, abbreviation ISB) " degree etc. is a critically important problem.
Summary of the invention
It in view of the shortcomings of the prior art, can the present invention provides a kind of ultrasonic imaging performance test apparatus and method
For testing the performance of supersonic imaging apparatus.
In order to achieve the above purpose, present invention employs the following technical solutions:
A kind of ultrasonic imaging performance test apparatus, comprising:
Box is controlled, is the control centre of equipment, including instruction input unit, can be instructed according to the input of operator and issue control
System instruction；
Imitated NDVI receives the detection of supersonic imaging apparatus for substituting tissue, sets in the imitated NDVI
There is imitative blood vessel；
Stepper motor is electrically connected with the control box, can be according to the control instruction of the control box with predetermined rotary state
It is rotated；
Flywheel is rotated in the shaft of the stepper motor by stepper motor drive；
Tape guide wheel corresponds to the imitative vessel end on the shell of the imitated NDVI；
Doppler's tape is sheathed on the outer surface of the flywheel and the tape guide wheel, is driven by the flywheel described
Imitate intravascular movement；
Supersonic imaging apparatus scans the imitated NDVI, and it is aobvious to carry out imaging to the motion state of Doppler's tape
Show.
Wherein, the imitative blood vessel of different depth is placed in the imitated NDVI at least provided with two.
Another object of the present invention is to provide a kind of ultrasonic imaging performance test methods, are scanned using supersonic imaging apparatus
The Doppler's tape or Doppler's string moved in imitated NDVI, and Doppler's tape or more that supersonic imaging apparatus is shown
The general motion state for strangling string and the desired motion state of setting compare point for the performance parameter for obtaining supersonic imaging apparatus
Analyse result.
Wherein, the ultrasonic imaging performance test methods include:
The desired motion state for imitating endovascular Doppler's tape of S01, the setting imitated NDVI；
S02, Doppler's tape according to the desired motion status adjustment imitate endovascular motion state described；
S03, supersonic imaging apparatus scan the imitated NDVI and to the motion state of Doppler's tape carry out at
As display；
The expectation of S04, the motion state for Doppler's tape that supersonic imaging apparatus imaging is shown and setting
Motion state compares, and obtains the analysis result of the performance parameter of supersonic imaging apparatus.
Wherein, in the step S02, control box according to the input voltage of the desired motion status adjustment stepper motor,
The stepper motor drives Doppler's tape to imitate intravascular movement described.
Wherein, the desired motion state includes constant speed operating mode and waveform operating mode, the constant speed operating mode
Under, Doppler's tape is moved with desired speed；Under the waveform operating mode, the speed cycle of Doppler's tape
Variation.
Wherein, the method for detecting the blood flow imaging sensitivity of supersonic imaging apparatus include: under the constant speed operating mode,
Supersonic imaging apparatus is switched under Color Doppler Flow Imaging mode or power doppler imaging mode and is worked；Ultrasound at
As the equipment scanning imitated NDVI, and imaging is carried out to the motion state of Doppler's tape and is shown；By adjusting institute
State the input voltage of stepper motor, be gradually increased the movement velocity of Doppler's tape from small to large, until reach ultrasound at
As equipment can show the First Speed of the rheography of Doppler's tape speed, the First Speed, that is, supersonic imaging apparatus
Blood flow imaging sensitivity.
Wherein, the method for detecting the Doppler spectrum sensitivity of supersonic imaging apparatus includes: in the constant speed Working mould
Under formula, supersonic imaging apparatus is switched under Doppler frequency spectrum chart-pattern and is worked；Supersonic imaging apparatus scans the imitative tissue
Body mould, and imaging is carried out to the motion state of Doppler's tape and is shown；By adjusting the input voltage of the stepper motor,
Be gradually increased the movement velocity of Doppler's tape from small to large, until reach supersonic imaging apparatus can show it is described how general
Strangle the second speed of the spectrogram of tape speed, the Doppler spectrum sensitivity of the second speed, that is, supersonic imaging apparatus.
Wherein, the method for detecting the Doppler spectrum maximum detection speed of supersonic imaging apparatus includes: in the constant speed
Under operating mode, supersonic imaging apparatus is switched under Doppler frequency spectrum chart-pattern and is worked；Described in supersonic imaging apparatus scanning
Imitated NDVI, and imaging is carried out to the motion state of Doppler's tape and is shown；By adjusting the defeated of the stepper motor
Enter voltage, be gradually reduced the movement velocity of Doppler's tape from big to small, until reaching supersonic imaging apparatus can show
The third speed of the spectrogram of Doppler's tape speed, i.e. the Doppler spectrum maximum of supersonic imaging apparatus detect speed
Degree.
Wherein, the heart for detecting the Doppler spectrum tachometric survey accuracy of supersonic imaging apparatus and being calculated based on spectrogram
The method of the correctness of blood vessel parameter includes: to switch to supersonic imaging apparatus in Doppler under the constant speed operating mode
It works under frequency spectrum chart-pattern；Supersonic imaging apparatus scans the imitated NDVI, and to the motion state of Doppler's tape
Imaging is carried out to show；By adjusting the input voltage of the stepper motor, record supersonic imaging apparatus can show described how general
The multiple Instantaneous velocity values measured when strangling the spectrogram of tape speed, and multiple instantaneous realities corresponding with Doppler's tape
Border movement velocity compares respectively, calculates the Doppler spectrum tachometric survey accuracy of supersonic imaging apparatus；It will be based on frequency spectrum
Scheme multiple instantaneous realities of the corresponding cardio-vascular parameters test value of the multiple Instantaneous velocity values calculated and Doppler's tape
The cardio-vascular parameters actual value that border movement velocity calculates is compared, and is obtaining the cardio-vascular parameters based on spectrogram calculating just
True property.
Wherein, the method for detecting the broadening of the Doppler spectrum of supersonic imaging apparatus and broadening degree includes: described
Under assigned work mode, supersonic imaging apparatus is switched under Doppler frequency spectrum chart-pattern and is worked；Supersonic imaging apparatus scanning
The imitated NDVI, and imaging is carried out to the motion state of Doppler's tape and is shown；It is shown in supersonic imaging apparatus
On the spectrogram of Doppler's tape, centered on a certain actual motion speed of Doppler's tape, institute is measured respectively
The maximum speed and minimum speed measured under a certain actual motion speed is stated, then analysis obtains the more of detection supersonic imaging apparatus
The general broadening for strangling spectrogram and broadening degree.
Ultrasonic imaging performance test apparatus of the invention scans imitated NDVI using supersonic imaging apparatus, detects Doppler
Tape is being imitated endovascular motion velocity information and is being shown, and comparing with the actual motion state of Doppler's tape,
Obtain the analysis result of the performance parameter of supersonic imaging apparatus.Since Doppler's tape is placed in the imitative blood vessel of imitated NDVI
Interior, movement not will drive other mediums and move together, so that the fortune for only Doppler's tape that supersonic imaging apparatus detects
Emotionally condition avoids unnecessary interference, can correctly reflect the actual imaging performance of supersonic imaging apparatus.
Detailed description of the invention
Fig. 1 is the ultrasonic imaging performance test apparatus structural schematic diagram of the preferred embodiment of the present invention.
Fig. 2 is the ultrasonic imaging performance test methods schematic diagram of the preferred embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.
Refering to fig. 1, ultrasonic imaging performance test apparatus of the invention includes: control box 1, imitated NDVI 2, stepper motor
4, flywheel 5, tape guide wheel 6 and Doppler's tape 7, supersonic imaging apparatus itself have for the probe of scanning and for according to spy
The scanning result of head carries out the image display cell of imaging display.Wherein, control box 1 is the control centre of equipment, including instruction
Input unit (not shown) can instruct according to the input of operator and issue control instruction；Imitated NDVI 2 is for substituting human body group
The detection for receiving supersonic imaging apparatus is knitted, inside is equipped with imitative blood vessel 3；Stepper motor 4 is electrically connected with control box 1, can be according to control
The control instruction of box 1 is rotated with predetermined rotary state；Flywheel 5 is fixed in the shaft of stepper motor 4, by stepper motor 4
Drive is rotated；Tape guide wheel 6 is set on the shell of imitated NDVI 2；Doppler's tape 7 is sheathed on flywheel 5 and tape is led
6 outer surface and tensioning are taken turns, is moved in imitative blood vessel 3 by the driving of flywheel 5.When this performance test apparatus works, scanning probe is imitative
Organizer's mould 2 to detect the motion state of Doppler's tape 7, meanwhile, motion state of the image display cell to Doppler's tape 7
It carries out imaging to show, makes operator that can be clearly observed the relevant information of movement velocity of Doppler's tape 7.
Specifically, two ends for imitating blood vessel 3 are respectively arranged with a tape guide wheel 6, and Doppler's tape 7 is sheathed on flywheel
5 and both ends tape guide wheel 6 outer surface and tensioning, meanwhile, Doppler's tape 7 is arranged in imitative blood vessel 3, and by the line at both ends
The band guidance of guide wheel 6 moves in imitative blood vessel 3.Preferably, it is obliquely installed in the imitated NDVI 2 of the present embodiment equipped with two imitative
Blood vessel 3, and depth of the every imitative blood vessel 3 in imitated NDVI 2 is different, two ends of every imitative blood vessel 3 are respectively arranged with
One tape guide wheel 6, Doppler's tape 7 are set on flywheel 5, in close 4 side of stepper motor respectively by two tape guide wheels 6
It is introduced in two imitative blood vessels 3, two imitative sides of the blood vessel 3 far from stepper motor 4, Doppler's tape 7 is by from an imitative blood
Pipe 3 is introduced to other one imitative blood vessel 3, and is guided by other two tape guide wheel 6.It is understood that the quantity of imitative blood vessel 3
Including and be not limited to two, can according to need and be configured.
Control box 1 is embedded with programmable control software, can instruct real-time control stepper motor 4 according to the input of operator
Input voltage, to adjust the real-time revolving speed of stepper motor 4.
It is to be appreciated that imitative blood vessel 3 in the imitated NDVI 2 of ultrasonic imaging performance test apparatus can be it is a plurality of, can
To be configured according to different needs.
Since Doppler's tape 7 is placed in the imitative blood vessel 3 of imitated NDVI 2, movement not will drive other mediums one
Movement is played, so that the motion conditions for only Doppler's tape 7 that supersonic imaging apparatus detects, avoid unnecessary interference,
It can correctly reflect the actual imaging performance of supersonic imaging apparatus；Simultaneously as being to adjust Doppler's line by stepper motor 4
With 7 motion state, the movement velocity of Doppler's tape 7 can be controlled accurately, detect convenience and detection accuracy greatly improves.
Such as Fig. 2, when being detected using ultrasonic imaging performance test apparatus to supersonic imaging apparatus, concrete operating principle is such as
Under:
S01, set imitated NDVI 2 imitative blood vessel 3 in Doppler's tape 7 desired motion state；
S02, the motion state according to desired motion status adjustment Doppler tape 7 in imitative blood vessel 3；
S03, supersonic imaging apparatus scan imitated NDVI 2 and carry out imaging to the motion state of Doppler's tape 7 and show；
The desired motion state of S04, the motion state for Doppler's tape 7 that supersonic imaging apparatus imaging is shown and setting
It compares, obtains the analysis result of the performance parameter of supersonic imaging apparatus.
Specifically, in step S02, the desired motion status adjustment for Doppler's tape 7 that control box 1 is inputted according to operator
The input voltage of stepper motor 4, stepper motor 4 drive Doppler's tape 7 it is expected that motion state moves in imitative blood vessel 3.
Wherein, the desired motion state of Doppler's tape 7 includes constant speed operating mode and two kinds of waveform operating mode, perseverance
Under fast operating mode, Doppler's tape 7 is moved with desired speed；Under waveform operating mode, the speed cycle of Doppler's tape 7
Variation, with moving wave shape (such as sine wave) movement.
Specifically, under constant speed operating mode, operator is run by setting the expectation of Doppler's tape 7 on control box 1
Speed ve, the input voltage that the control software in box 1 correspondingly adjusts stepper motor 4 is controlled, controls stepper motor 4 with defeated with this
The rotary speed movement for entering voltage matches drives Doppler's tape 7 to run with determining speed by flywheel 5；Due to Doppler's tape 7
It is set as through the imitative blood vessel 3 in imitated NDVI 2, therefore supersonic imaging apparatus can scan imitative tissue by its ultrasonic probe
Body mould 2, the movement velocity and velocity profile information of detection Doppler's tape 7 are simultaneously shown using its image display cell.?
Under such operating mode, operator can change the expectation speed of service v of different Doppler's tapes 7 on control box 1eValue,
The input voltage value of stepper motor 4 is adjusted by control software, control Doppler's tape 7 is run at different rates, to reach
To the purpose of adjustment 7 speed of service of Doppler's tape.
Similarly, under waveform operating mode, operator passes through the desired motion wave that Doppler's tape 7 is set on controlling box 1
Shape form controls the control software in box 1 and issues the voltage waveform value chronologically woven in advance to stepper motor 4, control step
Into motor 4 with the matched rotary speed movement of the input voltage waveform, by flywheel 5 drive Doppler's tape 7 with the waveform of setting
Form movement, supersonic imaging apparatus can scan imitated NDVI 2 by its ultrasonic probe, detect the movement of Doppler's tape 7
Waveform is simultaneously shown using its image display cell.
The assessment of performance index of supersonic imaging apparatus mainly has blood flow imaging sensitivity B1, Doppler spectrum sensitivity B2、
Doppler spectrum maximum detects speed B3, Doppler spectrum tachometric survey accuracy and based on spectrogram calculate angiocarpy
The correctness of parameter and the broadening of Doppler spectrum and broadening degree etc., can the accurate journey of measurement to different supersonic imaging apparatus
Degree is evaluated.
Wherein, the blood flow imaging sensitivity B of supersonic imaging apparatus is detected1Method include: under constant speed operating mode, will
Supersonic imaging apparatus is switched under Color Doppler Flow Imaging mode or power doppler imaging mode and is worked；Scanning probe
Imitated NDVI 2, image display cell carry out imaging to the motion state of Doppler's tape 7 and show；By adjusting stepper motor 4
Input voltage, the movement velocity of Doppler's tape 7 is gradually increased from small to large, such as since minimum speed (preferably 1mm/s)
It adjusts, until image display cell can show that the rheography of 7 speed of Doppler's tape, the least limit speed record are first
Speed v1, First Speed v1The as blood flow imaging sensitivity B of supersonic imaging apparatus1。
Detect the Doppler spectrum sensitivity B of supersonic imaging apparatus2Method include: under constant speed operating mode, will
Supersonic imaging apparatus is switched under Doppler frequency spectrum chart-pattern and is worked；Scanning probe imitated NDVI 2, image display cell pair
The motion state of Doppler's tape 7 carries out imaging and shows；By adjusting the input voltage of stepper motor 4, gradually increase from small to large
The movement velocity of large doppler tape 7, such as since smaller speed (preferably 1cm/s), until reaching image display cell can
Show that the spectrogram of 7 speed of Doppler's tape, the least limit speed record are second speed v2, second speed v2It is as super
The Doppler spectrum sensitivity B of Acoustic imaging equipment2。
The Doppler spectrum maximum for detecting supersonic imaging apparatus detects speed B3Method include: in constant speed operating mode
Under, supersonic imaging apparatus is switched under Doppler frequency spectrum chart-pattern and is worked；Scanning probe imitated NDVI 2, image is shown
Unit carries out imaging to the motion state of Doppler's tape 7 and shows；By adjusting the input voltage of stepper motor 4, from big to small
It is gradually reduced the movement velocity of Doppler's tape 7, preferably since fair speed (preferably 5m/s), until it is single to reach image display
Member can show the spectrogram of 7 speed of Doppler's tape, which is third speed v3, as ultrasonic imaging
The Doppler spectrum maximum of equipment detects speed B3。
The method for detecting the Doppler spectrum tachometric survey accuracy of supersonic imaging apparatus includes: in constant speed operating mode
Under, supersonic imaging apparatus is switched under Doppler frequency spectrum chart-pattern and is worked；Scanning probe imitated NDVI 2, image is shown
Unit carries out imaging to the motion state of Doppler's tape 7 and shows；By adjusting the input voltage of stepper motor 4, recording image
Display unit can show the multiple Instantaneous velocity values v measured when the spectrogram of 7 speed of Doppler's tape11、v12..., and with
Corresponding multiple instantaneous actual motion speed v of Doppler's tape 701、v02... it compares respectively, calculates supersonic imaging apparatus
Doppler spectrum tachometric survey accuracy；Detect the cardio-vascular parameters of supersonic imaging apparatus calculated based on spectrogram just
When true property, by the above-mentioned multiple Instantaneous velocity values v calculated based on spectrogram11、v12... corresponding cardio-vascular parameters test value
fv11、fv12... multiple instantaneous actual motion speed v with Doppler's tape 701、v02... the cardio-vascular parameters calculated are real
Actual value fv01、fv02... it is compared, the correctness for obtaining the cardio-vascular parameters calculated based on spectrogram can be analyzed.
The method for detecting the broadening of the Doppler spectrum of supersonic imaging apparatus and broadening degree includes: in assigned work mould
Under formula, supersonic imaging apparatus is switched under Doppler frequency spectrum chart-pattern and is worked；Scanning probe imitated NDVI 2, image are aobvious
Show that unit carries out imaging to the motion state of Doppler's tape 7 and shows；In the frequency for Doppler's tape 7 that image display cell is shown
On spectrogram, with a certain actual motion speed v of Doppler's tape 7xCentered on, a certain actual motion speed v is measured respectivelyxLower survey
The maximum speed v obtainedx1And minimum speed vx2, the big person of the difference of the actual motion speed of both and Doppler's tape is more
The general broadening for strangling imaging system Doppler spectrum, correspondence can analyze the Doppler spectrum for obtaining detection supersonic imaging apparatus
Broadening degree.
Since using control box 1, accurately control Doppler's tape 7 moves in the imitative blood vessel 3 of imitated NDVI 2, the present invention
The flow of fluid can be adjusted arbitrarily in the imitative blood vessel 3 of the ultrasonic imaging performance test apparatus of embodiment；Simultaneously as Doppler
Tape 7 is placed in the imitative blood vessel 3 of imitated NDVI 2, and movement not will drive other mediums and move together, so that ultrasonic imaging
Equipment detect only Doppler's tape 7 motion conditions, avoid unnecessary interference, can correctly reflect ultrasound at
As the actual imaging performance of equipment.
It is understood that Doppler's string formula body mould can be used during ultrasonic imaging performance test of the invention
Instead of the imitated NDVI of Doppler's tape built in the present embodiment, using same performance test methods to supersonic imaging apparatus
Performance is detected.
The above is only the specific embodiment of the application, it is noted that for the ordinary skill people of the art
For member, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications are also answered
It is considered as the protection scope of the application.
Claims (10)
1. a kind of ultrasonic imaging performance test apparatus characterized by comprising
It controls box (1), is the control centre of equipment, including instruction input unit, can be instructed according to the input of operator and issue control
System instruction；
Imitated NDVI (2), receives the detection of supersonic imaging apparatus for substituting tissue, and the imitated NDVI (2) is interior
Equipped with imitative blood vessel (3)；
Stepper motor (4) is electrically connected with the control box (1), can be according to the control instruction of control box (1) with predetermined rotation
State is rotated；
Flywheel (5) is set in the shaft of the stepper motor (4), is driven and is rotated by the stepper motor (4)；
Tape guide wheel (6) is set on the shell of the imitated NDVI (2) and corresponds to imitative blood vessel (3) end；
Doppler's tape (7) is sheathed on the outer surface of the flywheel (5) and the tape guide wheel (6), is driven by the flywheel (5)
Move the movement in the imitative blood vessel (3)；
Supersonic imaging apparatus scans the imitated NDVI (2), and the motion state of Doppler's tape (7) is imaged
Display.
2. a kind of ultrasonic imaging performance test methods using ultrasonic imaging performance test apparatus described in claim 1, special
Sign is, using the Doppler's tape or Doppler's string moved in supersonic imaging apparatus scanning imitated NDVI (2), and will surpass
The motion state of Doppler's tape or Doppler's string and the desired motion state of setting that Acoustic imaging equipment is shown compare
Obtain the analysis result of the performance parameter of supersonic imaging apparatus.
3. ultrasonic imaging performance test methods according to claim 2 characterized by comprising
S01, the setting imitated NDVI (2) imitative blood vessel (3) in Doppler's tape (7) desired motion state；
The motion state of S02, Doppler's tape (7) according to the desired motion status adjustment in the imitative blood vessel (3)；
S03, supersonic imaging apparatus scan the imitated NDVI (2) and carry out to the motion state of Doppler's tape (7)
Imaging display；
S04, the motion state of Doppler's tape (7) of supersonic imaging apparatus imaging display and the expectation of setting are transported
Dynamic state compares, and obtains the analysis result of the performance parameter of supersonic imaging apparatus.
4. ultrasonic imaging performance test methods according to claim 3, which is characterized in that in the step S02, control box
(1) according to the input voltage of the desired motion status adjustment stepper motor (4), the stepper motor (4) drives described how general
Strangle tape (7) movement in the imitative blood vessel (3).
5. ultrasonic imaging performance test methods according to claim 4, which is characterized in that the desired motion state includes
Constant speed operating mode and waveform operating mode, under the constant speed operating mode, Doppler's tape (7) is transported with desired speed
It is dynamic；Under the waveform operating mode, the speed cycle of Doppler's tape (7) changes.
6. ultrasonic imaging performance test methods according to claim 5, which is characterized in that detect the blood of supersonic imaging apparatus
The method of flow imaging sensitivity includes: to switch to supersonic imaging apparatus in color Doppler under the constant speed operating mode
It works under blood flow chart-pattern or power doppler imaging mode；Supersonic imaging apparatus scans the imitated NDVI (2), and right
The motion state of Doppler's tape (7) carries out imaging and shows；By adjusting the input voltage of the stepper motor (4), from
It is small to the movement velocity for being gradually increased Doppler's tape (7) greatly, until reach supersonic imaging apparatus can show it is described more
First Speed (the v of the general rheography for strangling tape (7) speed1), the First Speed (v1) i.e. supersonic imaging apparatus blood flow imaging
Sensitivity (B1).
7. ultrasonic imaging performance test methods according to claim 5, which is characterized in that detect the more of supersonic imaging apparatus
The general method for strangling spectrogram sensitivity includes: to switch to supersonic imaging apparatus in Doppler under the constant speed operating mode
It works under frequency spectrum chart-pattern；Supersonic imaging apparatus scans the imitated NDVI (2), and to the fortune of Doppler's tape (7)
Dynamic state carries out imaging and shows；By adjusting the input voltage of the stepper motor (4), it is gradually increased from small to large described how general
The movement velocity for strangling tape (7) can show the spectrogram of Doppler's tape (7) speed up to reaching supersonic imaging apparatus
Second speed (v2), the second speed (v2) i.e. supersonic imaging apparatus Doppler spectrum sensitivity (B2).
8. ultrasonic imaging performance test methods according to claim 5, which is characterized in that detect the more of supersonic imaging apparatus
The general method for strangling spectrogram maximum detection speed includes: to switch to supersonic imaging apparatus under the constant speed operating mode
It works under Doppler frequency spectrum chart-pattern；Supersonic imaging apparatus scans the imitated NDVI (2), and to Doppler's tape
(7) motion state carries out imaging and shows；By adjusting the input voltage of the stepper motor (4), it is gradually reduced from big to small
The movement velocity of Doppler's tape (7), until Doppler's tape (7) speed can be shown by reaching supersonic imaging apparatus
Spectrogram third speed (v3), i.e., the Doppler spectrum maximum of supersonic imaging apparatus detects speed (B3).
9. ultrasonic imaging performance test methods according to claim 5, which is characterized in that detect the more of supersonic imaging apparatus
The method of the general correctness for strangling spectrogram tachometric survey accuracy and the cardio-vascular parameters based on spectrogram calculating includes: described
Under constant speed operating mode, supersonic imaging apparatus is switched under Doppler frequency spectrum chart-pattern and is worked；Supersonic imaging apparatus scanning
The imitated NDVI (2), and imaging is carried out to the motion state of Doppler's tape (7) and is shown；By adjusting the step
Into the input voltage of motor (4), records supersonic imaging apparatus and surveyed when can show the spectrogram of Doppler's tape (7) speed
Multiple Instantaneous velocity values (the v obtained11、v12...), and multiple instantaneous actual motions corresponding with Doppler's tape (7)
Speed (v01、v02...) compare respectively, calculate the Doppler spectrum tachometric survey accuracy of supersonic imaging apparatus；By base
In the multiple Instantaneous velocity values (v that spectrogram calculates11、v12...) corresponding cardio-vascular parameters test value (f(v11), f
(v12) ...) with multiple instantaneous actual motion speed (v of Doppler's tape (7)01、v02...) angiocarpy that calculates
Parameter actual value (f(v01), f(v02) ...) be compared, obtain the correctness of the cardio-vascular parameters calculated based on spectrogram.
10. ultrasonic imaging performance test methods according to claim 5, which is characterized in that detect supersonic imaging apparatus
The broadening of Doppler spectrum and the method for broadening degree include: to switch to supersonic imaging apparatus under assigned work mode
It works under Doppler frequency spectrum chart-pattern；Supersonic imaging apparatus scans the imitated NDVI (2), and to Doppler's tape
(7) motion state carries out imaging and shows；On the spectrogram for Doppler's tape (7) that supersonic imaging apparatus is shown, with
The a certain actual motion speed (v of Doppler's tape (7)x) centered on, a certain actual motion speed (v is measured respectivelyx)
Under the maximum speed (v that measuresx1) and minimum speed (vx2), then analysis obtains the Doppler frequency spectrum of detection supersonic imaging apparatus
The broadening and broadening degree of figure.
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| CN108814649B (en) * | 2018-07-05 | 2024-04-05 | 河南省计量测试科学研究院 | Doppler ultrasonic diagnostic apparatus blood flow waveform die body and calibration method |
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