JPS63230155A - Ultrasonic diagnostic apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention utilizes ultrasound to obtain a black and white tomographic image of a diagnostic site of a subject, and displays color blood flow information superimposed on this tomographic image. The present invention relates to an ultrasonic diagnostic apparatus, and particularly relates to an ultrasonic diagnostic apparatus that can independently erase or restore black-and-white tomographic images or color blood flow information when a displayed image is frozen.

[Conventional technology]

As shown in FIG. 2, a conventional ultrasonic diagnostic apparatus of this type includes an ultrasonic transmitter/receiver 1 that emits an ultrasonic beam to a diagnostic region of a subject and receives the reflected waves; A blood flow detection unit 2 inputs the Doppler signal Sl obtained in the above to calculate the blood flow specifications of the diagnosis site, and a blood flow signal S3 outputted from this blood flow detection unit 2 is digitized to produce color blood flow. In addition to storing information, the ultrasonic transmitter/receiver 1
A color digital scan converter (hereinafter referred to as "color DSC") digitizes the echo signal S2 obtained in
J) 3 and a D/A that converts the color information signal S4 containing color blood flow information and black and white tomographic image data read from this color DSC 3 into an analog signal.
The analog signals R, G, and B of the three primary colors of red, green, and blue outputted from the converter 4 and the D/A converter 4 are input to display a black and white tomographic image and color blood flow information in a superimposed manner. It consisted of a color monitor 5. In order to freeze the displayed image, a freeze switch (not shown) provided inside the color DSC 3 is turned off, and the black and white tomographic image and color blood flow displayed on the screen of the color monitor 5 are displayed. Information images were stopped.

[Problem that the invention seeks to solve]

However, in such conventional ultrasound diagnostic equipment,
Both black and white tomographic image data and color blood flow information data are stored in the color DSC 3, and are sent to the D/A converter 4 as one color information signal S4 and displayed on the color monitor 5. After the display image is frozen, it is not possible to erase the monochrome tomographic image or the color blood flow information from the screen of the color monitor 5, or to restore the image to its original state. Therefore, in an ultrasonic diagnostic image in which color blood flow information is superimposed on a black and white tomogram, it is possible to erase only the color blood flow information and observe the black and white tomogram in detail, or to view only the black and white tomogram in detail. It was not possible to erase the color information and observe the color blood flow information in detail. For this reason, it may not be possible to perform a thorough diagnosis for the entire area of the displayed image.

Therefore, an object of the present invention is to provide an ultrasonic diagnostic apparatus that can solve these problems.

[Means for solving problems]

The means of the present invention for solving the above-mentioned problems includes an ultrasonic transmitter/receiver that emits an ultrasonic beam to a diagnostic site of a subject and receives the reflected wave, and inputs a Doppler signal obtained by the ultrasonic transmitter/receiver. a blood flow detection unit that calculates blood flow specifications of a diagnostic region; a color digital scan converter that digitizes the blood flow signal from the blood flow detection unit and stores and reads out color blood flow information; A black-and-white digital scan converter that digitizes the echo signals obtained by the ultrasonic transmitting and receiving unit, stores and reads black-and-white tomographic images, and blood flow information data read out from the color digital scan converter and black-and-white digital scan converter, respectively. Or a data converter that converts the value of tomographic image data to zero or restores it, a D/A converter that converts each data processed by this data converter into an analog signal, and from this D/A converter. and a color monitor that inputs analog signals to display black-and-white tomographic images and color blood flow information superimposed, and when the image is frozen, the data converter is controlled by the control signal from the ultrasonic transmitter/receiver. This is done using an ultrasonic diagnostic device that can independently erase or restore black-and-white tomographic images or color blood flow information.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of an ultrasonic diagnostic apparatus according to the present invention. This ultrasonic diagnostic apparatus uses ultrasonic waves to obtain a black and white tomographic image of a diagnostic region of a subject and displays color blood flow information superimposed on this tomographic image. Blood flow detection unit 2 and color D
It includes an SC 3, a monochrome digital scan converter (hereinafter abbreviated as "monochrome DSCJ") 6, a data converter 7, a D/A converter 4, and a color monitor 5.

The ultrasonic transmitter/receiver 1 emits an ultrasonic beam using a probe toward a diagnostic site of a subject and receives reflected waves from the diagnostic site to obtain a Doppler signal Sz and an echo signal S2, as shown in the figure. Although omitted, it has a control circuit, a pulse generator, a receiving amplifier, etc. inside. The blood flow detecting section 2 receives the Doppler signal S1 outputted from the ultrasonic transmitting/receiving section 1 and calculates blood flow parameters such as blood flow velocity, dispersion, and reflection intensity at the diagnostic site.

The color DSC 3 digitizes the blood flow signal S3 related to the blood flow specifications output from the blood flow detection section 2, stores it as color blood flow information, and reads it out. Dispersion.

It has respective memories corresponding to reflection intensity and the like.

Further, the black-and-white DSC 6 digitizes the echo signal Sz output from the ultrasonic transmitter/receiver 1 and stores and reads it as a black-and-white tomographic image, and has an image memory with an appropriate data capacity inside. There is.

Here, the data converter 7 inputs the blood flow information data D1 read from the color DSC 3 and the tomographic image data D2 read from the monochrome DSC 6, and also inputs the blood flow information data D1 or the tomographic image data D2. Converts a value to zero or restores it to its original value.
Each data DA.

For example, ROM (read-only memory) corresponding to Dz
Alternatively, each has a data conversion means such as a RAM (random read/write memory), etc., and a conversion table in which conversion data of "OI+" or "1" is written to the manual address of blood flow information data D1 or tomographic image data Dz. The data converter 7 is controlled by a control signal S5 output from the ultrasonic transmitter/receiver 1.

The D/A converter 4 inputs the converter blood flow information data D3 processed by the data converter 7 and the converted tomographic image data D4 and converts them into analog signals.

And the color monitor 5.

As described above, analog signals R, G, and B of the three primary colors of red, green, and blue outputted from the /A converter 4 are input to display a black and white tomographic image and color blood flow information in a superimposed manner. C
Consists of RT.

Next, the operation of the ultrasonic diagnostic apparatus of the present invention configured as described above will be explained. First, under the control of the ultrasound transmitting/receiving section 1, a probe emits an ultrasound beam to a diagnostic site of a subject and receives the reflected wave. Next, the Doppler signal S1 obtained by the ultrasound transmitting/receiving section 1 is input to the blood flow detecting section 2. Then, the blood flow detection unit 2 calculates blood flow specifications such as blood flow velocity 2 dispersion 9 reflection intensity of the diagnosis site using the Doppler signal S1. Then, the blood flow signal S3 regarding the blood flow specifications is input to the next color DSC 3h, converted into a digital quantity, and stored as color blood flow information. On the other hand, the echo signal S2 obtained by the ultrasonic transmitter/receiver 1 is input to the monochrome DSC 6. Then,
This monochrome DSC 6 converts the echo signal S2 into a digital quantity and stores it as a monochrome tomographic image. next,
The blood flow information data DA read from the color DSC 3 and the tomographic image data Dz read from the monochrome DSC 6 are input to the data converter 7, respectively. Now, in the normal case where color blood flow information is displayed superimposed on a black and white tomographic image, the data converter 7 converts each data Dz
, Dz values are not converted to zero, that is, the converted data of the data converting means is set to "1", and the converted blood flow information data D8 and the converted tomographic image data D are directly converted.
Output as 4. Then, these converted blood flow information data D8 and tomographic image data D4 are input to the D/A converter 4, where they are converted into three primary color analog signals R1G and H.

Then, these analog signals R, G, and B are sent to the color monitor 5.
A black-and-white tomographic image and color blood flow information are superimposed on the screen.

Here, in order to erase the black and white tomographic image or color blood flow information while the display image on the color monitor 5 is frozen, first turn off the freeze switch (not shown) in the color DSC 3. At the same time, the freeze switch (not shown) in the monochrome DSC 6 is turned off. Then, new blood flow information data Dr and tomographic image data D are stored in the corresponding memories of the color DSC 3 and monochrome DSC 6.
2 is no longer input, each piece of data written before is read out repeatedly and sent to the data converter 7 as blood flow information data D1 and tomographic image data D2. At this time, the displayed image on the color monitor 5 remains stationary. For example, in order to erase only the color blood flow information, the control signal S5 from the ultrasonic transmitter/receiver 1 is used to convert the converted data of the data converter corresponding to the blood flow information data Dz in the data converter 7. Let it be LL OI+. Then, the blood flow information data D1 input from the color DSC 3 is
The data value is converted to zero by the data converter 7,
The converted blood flow information data D3 is sent to the D/A converter 4. At this time, the blood flow information data D3 after the above conversion
The value of is zero, and on the other hand, the converted tomographic image data D4 remains at its original value, so color blood flow information is erased from the screen of the color monitor 5, and only a black and white tomographic image is displayed. Ru.

In order to restore the color blood flow information from this state and display it again, control No. 48 S5 from the ultrasound transmitter/receiver 1 is used.
The converted data of the data converting means corresponding to the blood flow information data Dz in the data converter 7 may be set as N I I+. Then, the value of the converted blood flow information data D3 is restored, and the black and white tomographic image and the color blood flow information are again displayed superimposed on the screen of the color monitor 5.

Similarly, to erase only the black and white tomographic image,
The control signal S5 from the ultrasound transmitting/receiving section 1 may be used to set the converted data of the data converting means corresponding to the tomographic image data D2 in the data converter 7 to rr O+1. In this way, when the display image on the color monitor 5 is frozen, the black and white tomographic image or the color blood flow information can be individually erased from the screen or restored.

〔Effect of the invention〕

Since the present invention is configured as described above, the color monitor 5
When the displayed image is frozen, the data converter 7 is controlled by the control signal S5 from the ultrasonic transmitter/receiver 1 to erase the black and white tomographic image or color blood flow information from the screen, or to restore it to its original state. It can be restored to. Therefore, in an ultrasonic diagnostic image in which color blood flow information is superimposed on a black and white tomogram, it is possible to erase only the color blood flow information and observe the black and white tomogram in detail, or to view only the black and white tomogram in detail. can be erased to observe color blood flow information in detail. From this, it is possible to fully diagnose the entire area of black and white tomographic images and color blood flow information without omission.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of an ultrasonic diagnostic apparatus according to the present invention, and FIG. 2 is a block diagram showing a conventional ultrasonic diagnostic apparatus.

Claims (1)

[Claims] 1. An ultrasonic transmitter/receiver unit that emits an ultrasound beam to the diagnostic site of the subject and receives the reflected wave, and calculates the blood flow specifications of the diagnostic site by inputting the Doppler signal obtained by this ultrasonic transmitter/receiver unit. a color digital scan converter that digitizes the blood flow signal from the blood flow detection section to store and read out color blood flow information, and an echo signal obtained by the ultrasonic transmission/reception section. A black and white digital scan converter that digitizes and stores black and white tomographic images and reads them out, converts the values of blood flow information data or tomographic image data read out from the color digital scan converter and black and white digital scan converter to zero. a data converter for restoring data, a D/A converter for converting each data processed by this data converter into analog signals, and a black and white tomographic image by inputting the analog signals from this D/A converter. and a color monitor that displays color blood flow information superimposed, and when the image is frozen, the data converter is controlled by the control signal from the ultrasonic transceiver unit to display a black and white tomographic image or color blood flow information. An ultrasonic diagnostic device characterized in that information can be independently erased or restored.