WO2005006987A1 - 超音波診断装置及び超音波画像診断方法 - Google Patents
超音波診断装置及び超音波画像診断方法 Download PDFInfo
- Publication number
- WO2005006987A1 WO2005006987A1 PCT/JP2004/010321 JP2004010321W WO2005006987A1 WO 2005006987 A1 WO2005006987 A1 WO 2005006987A1 JP 2004010321 W JP2004010321 W JP 2004010321W WO 2005006987 A1 WO2005006987 A1 WO 2005006987A1
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- Prior art keywords
- color
- image
- transparency
- variance
- color doppler
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/06—Measuring blood flow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/13—Tomography
Definitions
- the present invention relates to an ultrasonic diagnostic apparatus that has a color Doppler measurement function and that constructs and displays images of a plurality of color Doppler images obtained by measuring a diagnostic site of a subject. Also, the present invention relates to an ultrasonic diagnostic apparatus and an ultrasonic image diagnostic method capable of displaying turbulence information.
- Patent Document 1 discloses such a depth expressed by lightness and darkness as a color bar on a screen.
- Patent Document 1 JP-A-11 299784
- the present invention has been made in view of the above points, and has been made in consideration of the above-described problems, and has been made in view of the fact that, when a color Doppler image is displayed, an ultrasonic diagnostic method capable of easily displaying a turbulent flow present in a blood flow can be distinguished.
- An object of the present invention is to provide a cutting device and an ultrasonic image diagnostic method.
- an ultrasonic wave is transmitted to and received from a subject via an ultrasonic probe, and a tomographic image forming unit that forms a tomographic image of a diagnostic site of the subject, Color Doppler image forming means for forming a color Doppler image based on the obtained Doppler signal, image processing means for performing image processing on each of the tomographic image and the color Doppler image, and an image processed by the image processing means And display means for displaying In an ultrasonic diagnostic apparatus for displaying a tomographic image and the color Doppler image in color, the image processing means displays the color Doppler image transparently.
- the display means displays information obtained by combining the color display and the transparent display.
- a selecting means for selecting the color display or the transparent display, and the display means displays the information selected by the selecting means. Further, a transparency control unit for controlling the degree of transparency of the color Doppler image displayed in a transparent manner is provided.
- the transparency control means controls the degree of transparency based on the blood flow information of the color Doppler image.
- the transparency control means controls the degree of transparency based on the distribution of the blood flow of the color Doppler image. Further, the transparency control means sets the transparency of the color Doppler image to be smaller as the variance of the blood flow is larger. Further, the transparency control means obtains the variance as a relative value. When the variance is the maximum, the variance is opaque, when there is no variance, the display is transparent, and when the variance is the other, the display is translucent.
- the display means displays a transparency force bar representing the transparency of the color Doppler image displayed in color.
- the transparency control means displays the transparency color bar in which different transparency is set according to the dispersion.
- a brightness / hue control unit for controlling the hue of the color-displayed color Doppler image.
- the transparency control unit and the brightness / hue control unit determine brightness, hue, and transparency based on the blood flow information. Control and create 3D color Doppler image.
- FIG. 1 is a diagram showing an overall configuration according to the present invention.
- FIG. 2 is a diagram showing details of an image processing unit according to the present invention.
- FIG. 3 is a view showing a color two-dimensional image display according to the present invention.
- FIG. 4 is a diagram showing a color three-dimensional image display method according to the present invention.
- FIG. 5 is a diagram showing a color three-dimensional image display method according to the present invention.
- FIG. 6 is a view showing a display result according to the present invention.
- the ultrasonic pulse transmitted from the transmitter 102 is repeatedly transmitted from the ultrasonic probe 101 to the reflecting object 111 at equal intervals T.
- the ultrasonic pulse reflected by the reflecting object 111 is received by the receiving circuit 103, converted into a digital signal by the AZD converter 104, and a digital signal output of each of the cos component and the sin component is obtained by the phase comparator 105. Is received.
- the cos component and sin component signals are attenuated by the high-pass MTI filter 106 to attenuate the low-frequency component (clutter component), and the high-frequency component (blood flow component) is extracted. Calculate speed, variance, and power.
- the respective computation results are rearranged by the digital scan converter 108 according to the television scanning method, color-coded corresponding to the speed variance by the color encoder 109, and displayed on the television monitor 110.
- a color Doppler image is displayed together with a tomographic image
- a tomographic image is formed by the tomographic image forming unit 112
- the color Doppler image is superimposed on the tomographic image and displayed on the television monitor 110 using the image processing unit 113.
- This ultrasonic diagnostic apparatus captures a plurality of color Doppler images at a diagnostic site of a subject and displays a two-dimensional image or a three-dimensional image based on the color Doppler images. It is.
- FIG. 2 is a diagram showing details of the image processing unit of the present invention.
- the ultrasonic Doppler measuring unit 31 measures a plurality of color Doppler images of a diagnostic part of the subject, and processes the Doppler signal obtained from the ultrasonic probe 101 as shown in FIG. Make up the image.
- the image processing unit 113 includes a communication port 33 and an image forming unit 34.
- the communication port 33 captures the velocity data, the reflection intensity, and the dispersion of the frequency shift and the tomographic image of the plurality of color Doppler images measured by the ultrasonic Doppler measuring unit 31 into the image forming unit 34.
- the image forming unit 34 processes the speed, reflection intensity, and dispersion data of a plurality of color Doppler images taken in from the communication port 33, and performs image processing. It comprises a CPU 38 and a transparency control unit 3A.
- the RAM 36 and the magnetic disk device 37 store the data of the captured color Doppler image.
- High-speed arithmetic unit Numeral 35 reads out data from the RAM 36 and the magnetic disk device 37 and performs two-dimensional image processing and three-dimensional image processing.
- the television monitor 110 displays the color Doppler image imaged by the high-speed operation device 35.
- the CPU 38 controls the operation of each of these components.
- the data bus 30 is for transmitting data between the components.
- the transparency control unit 3A appropriately controls the transparency color bar set so that the transparency becomes smaller as the variance becomes larger.
- the TV monitor 110 displays a color Doppler image obtained by combining the color display and the transparent display. There is provided a selection means (not shown) for selecting between color display and transparent display, and the television monitor 110 displays the color Doppler image selected by the selection means.
- FIG. 3 (B) when the inside of the blood vessel 2 is entirely a blood flow in the direction indicated by the arrow 4, the turbulence 5 as shown in FIG.
- An ultrasonic beam as shown in FIG. 3 (A) is transmitted to and received from the subject tissue, color Doppler calculation is performed, and the image is displayed as a color Doppler image.
- the data structure of the color Doppler image is based on the blood flow velocity and the magnitude of the variance, using a luminance / hue color bar 23 and a transparency color bar 24 as shown in FIG. Will be assigned to the part where exists.
- each point of the image There are three types of information on each point of the image: speed, reflection intensity, and variance.
- speed and variance To perform color Doppler display according to speed and variance, first, the luminance and hue color bars are obtained from the speed and variance information. 23 is used to determine the luminance 'hue of each point. Then, using the transparency color bar 24, the transparency of each point is determined based on the magnitude of the variance. The transparency color bar 24 is set such that the greater the variance, the lower the transparency.
- a turbulent portion existing in the bloodstream has a large dispersion. Therefore, a blood flow image with a small variance is transparent and a blood flow image with a large variance remains, so that turbulence can be easily determined.
- volume rendering uses the parameters in the 3D vota cell to determine the brightness of the color
- the hue and transparency are determined.
- the same color bar as that used in the two-dimensional image is used to determine the brightness and hue according to the blood flow speed * variance, and the transparency is arbitrarily determined by the operator. Use a value that can be set. The operator can observe an arbitrary cross section and control the transparency of the entire blood flow during the three-dimensional display.
- FIG. 4 is a flowchart illustrating an example of a method for displaying a three-dimensional color Doppler image.
- FIG. 5 is a diagram showing an example of a procedure for displaying information on the blood flow velocity among the blood flow information at the diagnostic site of the subject measured by the ultrasonic Doppler measuring unit 31 shown in FIG. .
- a plurality of color Doppler images are measured. That is, as shown in FIG. 5, an ultrasonic diagnostic apparatus having a color Doppler measurement function measures a plurality of color Doppler images 51 (for example, n images of P1 to Pn) at a diagnostic site of a subject.
- step S42 for each of the measured color Doppler images, the velocity 'reflection intensity and the dispersion data are arranged in a three-dimensional Vota cell. That is, as shown in FIG. 5, each of the n measured color Doppler images 51 is arranged on the three-dimensional button cell 52 according to the position of each surface.
- step S43 the color information of the three-dimensional vota cell is determined based on the speed and the magnitude of the variance using the luminance ′ hue color bar. That is, as shown in FIG. 5, there are three pieces of information of each point on each three-dimensional voxel 52: speed, reflection intensity, and variance, but in order to perform color Doppler display according to speed and variance, First, the luminance and the hue of each point on each three-dimensional button cell 52 are determined using the luminance and the hue color bar 53 from the speed and dispersion information.
- step S44 using the transparency color bar 54, the transparency of the three-dimensional Vota cell is determined based on the magnitude of the variance. That is, as shown in FIG. 5, the transparency of each point on each three-dimensional button cell 52 is determined using the transparency color bar 54.
- the transparency color bar 54 is set such that the greater the variance, the lower the transparency.
- the transparency color bar 54 is an example, and a different color bar is selected by the transparency control unit 3A. For example, compared to the transparency color bar 54 shown in FIG. 5, the transparency is relatively large only in the portion where the dispersion is relatively small, and the transparency is small (the opacity is large) in the portion where the dispersion is large. Use one that is set as follows.
- the transparency control unit 3A selects the transparency color bar 54 in which the ratio of the transparency that changes according to the magnitude of the dispersion is different.
- the transparency obtained by the transparency color bar 54 may be appropriately operated to control the transparency.
- step S45 volume rendering is executed based on the parameters determined by the previous processing, and a projection image is created and displayed. That is, as shown in FIG. 5, a volume rendering is performed on the three-dimensional bottle cell 52 to create a three-dimensional color Doppler projected image 55, which is displayed on the television monitor 110.
- the blood flow with a small variance has high transparency, and the blood flow with a large variance has low transparency (high opacity).
- the turbulence is displayed in an emphasized form as shown.
- the speed and variance shown in FIG. 5 are obtained as relative values.
- the speed component is represented by a numerical value from 1.0 to 1.0.
- the variance component is represented by a numerical value from 0 to 1.0.
- the speed is +1.0 and the variance is 0, it is determined that the color information of the three-dimensional vota cell is red and transparent, and a volume rendering is performed to create a three-dimensional color Doppler projection image 55, and the transparent red is displayed. It is displayed on the TV monitor 110.
- the speed is +1.0 and the variance is 1.0
- the color information of the three-dimensional vota cell is determined to be yellow and not transparent.
- the velocity is -1.0 and the variance is 0.5
- the color information of the three-dimensional votacel is determined to be yellow-green and translucent.
- a three-dimensional color Doppler projection image created by performing volume rendering after arranging a plurality of color Doppler images measured by an ultrasonic diagnostic apparatus in a three-dimensional Vota cell, a three-dimensional color Doppler projection image created by performing volume rendering.
- the variance is small! Normally, the blood flow can be seen through with great transparency, and the turbulence with large variance can be displayed opaque. Therefore, in a flow in which turbulence exists in a part of the blood flow as shown in FIG. 5, in the conventional method, as shown in FIG. 6 (A), the turbulence 5 is difficult to discriminate, whereas the method according to the present invention has a small dispersion. ⁇ Since the blood flow 2 can be seen through, the flow of the turbulent flow 5 easily exists in the blood flow as shown in FIG. 6 (B).
- an effective display for image diagnosis can be performed in an ultrasonic diagnostic apparatus having a color Doppler measurement function.
- a force rubber 541 is prepared in which the luminance 'hue color bar 53 and the transparency color bar 54 are combined in advance, as described in the case where the luminance' hue color bar 53 and the transparency color bar 54 are separately processed. , May be used for processing.
- the luminance 'hue color bar 53 and the transparency color bar 54 may be displayed simultaneously with the three-dimensional color Doppler projected image 55 as shown in FIG.
- Luminance ⁇ Hue color bar 53 and Transparency color bar 54 Forced dimensional color Doppler projection image 55 Displayed at the same time as a reference for observation, you can easily understand how much turbulence is Become like
- a selection means for selecting the luminance / hue color bar 53 and the transparency color bar 54 is provided, and the luminance / hue color bar 53 and the transparency color bar 54 are alternately switched and selected. Only the color bar may be displayed. Further, the luminance color bar 53 and the transparency color bar 54 may be simultaneously displayed. When only the transparency color bar 54 is used, for example, display may be performed by changing the transparency of red by using red as the luminance and hue. Therefore, areas with large variance have low transparency and areas with low variance have high transparency.Each point is displayed in red, so that turbulence is displayed in red with low transparency, and other areas are displayed in red. Large and can be displayed in red.
- the color bars 23 and 53 are displayed in black and white. Actually, the color bars are displayed. The color bars 23 and 53 gradually change from dark red to orange when the speed near 0 is close to black, and gradually change to near yellow as the variance increases. Conversely, when the velocity is in the negative direction, the color gradually changes from dark blue to bright blue, and gradually changes to a color closer to green as the variance increases.
- the color of the blood vessel 2 in the color Doppler projection image is displayed in a color corresponding to such color bars 23 and 53. Therefore, as shown in Fig. 3 (B), when turbulence 5 is present in a part of the blood flow flowing at the speed indicated by arrow 4 as a whole, a reddish color is displayed as a whole. The turbulence 5 is displayed in a greenish color in the blood flow 2 that has been generated.
- the luminance 'hue color bar 53 is a force that determines colors as shown in Figs. 3 and 5, and any color may be assigned according to the speed and dispersion of the color bar.
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005511883A JP4610011B2 (ja) | 2003-07-22 | 2004-07-21 | 超音波診断装置及び超音波画像表示方法 |
US10/565,435 US7972269B2 (en) | 2003-07-22 | 2004-07-21 | Ultrasonographic device and ultrasonographic method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003200162 | 2003-07-22 | ||
JP2003-200162 | 2003-07-22 |
Publications (1)
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WO2005006987A1 true WO2005006987A1 (ja) | 2005-01-27 |
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PCT/JP2004/010321 WO2005006987A1 (ja) | 2003-07-22 | 2004-07-21 | 超音波診断装置及び超音波画像診断方法 |
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US (1) | US7972269B2 (ja) |
JP (1) | JP4610011B2 (ja) |
CN (1) | CN100446733C (ja) |
WO (1) | WO2005006987A1 (ja) |
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JP2007007402A (ja) * | 2005-06-28 | 2007-01-18 | Medison Co Ltd | カラーフロー映像をディスプレイする方法及び超音波診断システム |
JP2007143627A (ja) * | 2005-11-24 | 2007-06-14 | Ge Medical Systems Global Technology Co Llc | 画像診断装置 |
JP2007296333A (ja) * | 2006-04-27 | 2007-11-15 | General Electric Co <Ge> | フロージェットの3d描出のための方法及び装置 |
JP2009011711A (ja) * | 2007-07-09 | 2009-01-22 | Toshiba Corp | 超音波診断装置 |
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JP2007007402A (ja) * | 2005-06-28 | 2007-01-18 | Medison Co Ltd | カラーフロー映像をディスプレイする方法及び超音波診断システム |
JP2007143627A (ja) * | 2005-11-24 | 2007-06-14 | Ge Medical Systems Global Technology Co Llc | 画像診断装置 |
JP2007296333A (ja) * | 2006-04-27 | 2007-11-15 | General Electric Co <Ge> | フロージェットの3d描出のための方法及び装置 |
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JP5723790B2 (ja) * | 2010-01-18 | 2015-05-27 | 株式会社日立メディコ | 超音波診断装置 |
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JP2013526975A (ja) * | 2010-05-27 | 2013-06-27 | 三星メディソン株式会社 | カラー再構成映像を提供する超音波システムおよび方法 |
JP2021159696A (ja) * | 2020-04-03 | 2021-10-11 | キヤノンメディカルシステムズ株式会社 | 超音波診断装置、およびプログラム |
JP7440328B2 (ja) | 2020-04-03 | 2024-02-28 | キヤノンメディカルシステムズ株式会社 | 超音波診断装置、およびプログラム |
US12023196B2 (en) | 2020-04-03 | 2024-07-02 | Canon Medical Systems Corporation | Ultrasonic diagnostic apparatus and storage medium |
Also Published As
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US20060241458A1 (en) | 2006-10-26 |
CN100446733C (zh) | 2008-12-31 |
CN1826082A (zh) | 2006-08-30 |
US7972269B2 (en) | 2011-07-05 |
JP4610011B2 (ja) | 2011-01-12 |
JPWO2005006987A1 (ja) | 2007-04-12 |
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