JPH01221147A - Ultrasonic diagnosing device - Google Patents

Abstract

PURPOSE:To enable easy discrimination of a fault image at which timing, by setting a color code by means of which a different color phase is provided for the part of an ECG waveform responding to a timing delayed by a given time from an R-wave and the part of a remaining ECG waveform. CONSTITUTION:The part, not responding to a timing of a delay signal, of an ECG waveform is displayed in white, the part, of a timing responding to a first delay signal, the ECG waveform is displayed in blue, and the part, of a timing responding to a second delay signal, of the ECG waveform, is displayed in red. Further, in a multiplexer 9, picture data and a letter signal, responding to an output from a color code converting circuit 5 and a fault image, are selected and outputted in response to a selection signal. This constitution enables display of the timing of an R-wave delay trigger responding to a fault image in an electrocardio synchronous mode without straining the ECG waveform, and enables easy discrimination of a plurality of fault images individually responding to the timings of a plurality of R-wave delay triggers.

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to an ultrasonic diagnostic apparatus.

(b) Prior art and its problems In general, in the electrocardiogram synchronized mode of ultrasound diagnostic equipment,
The ECG waveform is displayed, and as shown in FIG. 4, from the R wave of the ECG waveform, for example, 1. A tomographic image corresponding to the timing delayed by a predetermined time T 1.72 preset to correspond to end-systole, end-diastole, etc., that is, the so-called R-wave delay trigger timing, is displayed.

Conventionally, in order to indicate the timing of this R-wave delay trigger, a portion of the ECG waveform corresponding to the timing is left blank as shown by arrow A in FIG. 5, or a portion corresponding to the timing is left blank as shown in FIG. A pulse B is superimposed on a portion corresponding to the timing.

However, in a display in which the ECG waveform is blanked at the timing of the R-wave delay trigger, the tomographic image C, as shown in FIG. 7, has the above-mentioned delay time TI.

If two pulses are displayed corresponding to T2, it will be difficult to distinguish which timing corresponds to the other, and if pulse B is displayed in a superimposed manner, the ECG waveform will be distorted, making it difficult to see. There are some difficulties.

The present invention has been made in view of the above-mentioned points, and is capable of displaying the timing of an R-wave delay trigger in electrocardiographic synchronization mode without distorting the ECG waveform, and also allows the timing of a plurality of R-wave delay triggers to be displayed individually. It is an object of the present invention to easily distinguish which timing a tomographic image corresponds to when displaying a plurality of tomographic images that correspond to each other.

(c) Means for Solving the Problems In the present invention, in order to achieve the above-mentioned object, in the ECG synchronization mode, the ECG waveform is displayed and a predetermined time period is set from the R wave of the ECG waveform. In ultrasonic diagnostic equipment that displays tomographic images with delayed timing, R, G
, H, and a color code conversion circuit having a color memory storing color codes corresponding to the respective hues of H. Based on the R wave of the ECG signal, a delayed signal whose timing is delayed by the predetermined time from the R wave is generated. a delayed signal generating circuit; and addressing data generating means for generating addressing data to the color memory based on the delayed signal and the ECG signal; A color code is set that gives different hues to the portion of the ECG waveform corresponding to a timing delayed by a predetermined time from the time of the ECG waveform and the portion of the remaining ECG waveform.

(D) Effect According to the above configuration, the portion of the ECG waveform corresponding to the timing delayed by a preset predetermined time from the R wave, that is, the timing of the R wave delay trigger, and the portion of the remaining ECG waveform have different hues. will be displayed.

(e) Examples Examples of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an ultrasonic diagnostic apparatus according to an embodiment of the present invention. In the figure, l is an R wave detection circuit that detects R waves included in an ECG signal from an electrocardiograph (not shown);
2 is a predetermined time set in advance from this R wave based on the detected R wave, and in this embodiment, as in the above-mentioned conventional example, the timing !2 is delayed by TI and T2. , 2nd j! 3 is an A/D converter for A/D converting the ECG signal;
This is a D conversion circuit.

4 is the first signal from the delay signal generating circuit 2. This overlay memory serves as an addressing data generating means for generating addressing data to a color code conversion circuit 5 having a color memory, which will be described later, based on the second delayed signal and the A/D converted ECG signal.

As shown in FIG. 2, this overlay memory 4 is composed of three layers of memories 48 to 4C corresponding to screen display, and this overlay memory 4 receives an address signal in the X direction from a control circuit 6. As given, A
The /D-converted ECG signal is given as a Y-direction address signal.

The overlay memory 4 also includes two first . The second delay signal is the input terminal DO,
+5 given to DI and corresponding to logical “1”
A voltage of v is applied to input terminal D2. Each input terminal DO
, DI, D2 and each output terminal OO-02 correspond to the memories 4a, 4b, and 4c of each layer described above, respectively.

In this overlay memory 4, the address corresponding to the ECG waveform is stored in the memory 4C corresponding to the input terminal D2.
Memory 4 in which "1" is written and corresponds to input terminal D1
h, rlJ is written at the address corresponding to the ECG waveform at the timing of the second delay signal, and input terminal D
In the memory 4a corresponding to O, rlJ is written at an address corresponding to the ECG waveform at the timing of the first delayed signal.

Control of writing to the overlay memory 4 is performed by a control circuit 6, while reading is performed by a read control circuit 7 in synchronization with a TV synchronization signal from a TV synchronization signal generation circuit 8.

The 3-bit (00° 01.02) addressing data read from the overlay memory 4, which serves as addressing data generation means, is sent to a color memory in which color codes corresponding to each hue of R, G, and B are stored. The color code conversion circuit 5 has a color code conversion circuit 5. The color memory of the color code conversion circuit 5 stores a predetermined time T1.
Color codes are set that give different hues to the portion of the ECG waveform corresponding to the timing delayed by T2 and the portion of the remaining ECG waveform, respectively.

For example, when the address data read from the overlay memory 4 is roooJ, it is converted to a color code corresponding to the hue of black, and the address data is roooJ.
When , the color code is converted to the color code corresponding to the hue of white, when the address data is rollJ, the color code is converted to the color code corresponding to the hue of red, and when the address data is ``101'', the color code is converted to the color code corresponding to the hue of blue. converted to code. After this color code is D/A converted by the D/A conversion circuit 1O via the multiplexer 9,
The ECG waveform is applied to a color monitor 11 and displayed in color.

Therefore, for example, in the above example, as shown in FIG. 3, the portion of the ECG waveform that does not correspond to the timing of the delayed signal is displayed in white, and The corresponding timing portion will be displayed in blue, and the timing portion of the ECG waveform that corresponds to the second delayed signal will be displayed in red.

Note that in the multiplexer 9, the color code conversion circuit 5
, image data corresponding to the tomographic image, and character signals are selectively output according to the selection signal.

This makes it possible to display the timing of the R-wave delay trigger corresponding to a tomographic image in ECG-gated mode without distorting the ECG waveform, and to distinguish between multiple tomographic images that individually correspond to the timing of multiple R-wave delay triggers. can also be done easily.

(f) Effects As described above, according to the present invention, in the electrocardiogram synchronized mode, E
In an ultrasonic diagnostic apparatus that displays a CG waveform and also displays a tomographic image corresponding to a timing delayed by a predetermined time from the R wave of the ECG waveform, Since the ECG waveform part and the remaining ECG waveform part are displayed in different hues, it is possible to display the so-called R wave delay trigger timing in ECG synchronized mode without distorting the ECG waveform, and also to display multiple It is also possible to easily distinguish between a plurality of tomographic images that individually correspond to the timing of the R-wave delay trigger.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a diagram showing the configuration of an overlay memory, FIG. 3 is a diagram showing an ECG waveform display of the embodiment of FIG. 1, and FIG. 4 is an ECG waveform display. A diagram showing waveforms, FIG. 5 is a diagram showing a conventional ECG waveform display,
Fig. 6 is a diagram showing the ECG waveform display of another conventional example, Fig. 7
The figure is a diagram showing the display of the electrocardiogram synchronization mode. 2... Delayed signal generation circuit, 4... Overlay memory (addressing data generation means), 5... Color code conversion circuit. Applicant Takashuma Co., Ltd. Manufacturing Agent Patent Attorney Oka 1) Kazuhide Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] (1) In the electrocardiogram synchronization mode, in an ultrasound diagnostic apparatus that displays an ECG waveform and displays a tomographic image delayed by a predetermined time from the R wave of the ECG waveform, R, G, B a color code conversion circuit having a color memory storing a color code corresponding to each hue; and a delay signal that generates a delayed signal whose timing is delayed by the predetermined time from the R wave based on the R wave of the ECG signal. a generation circuit; and addressing data generation means for generating addressing data to the color memory based on the delayed signal and the ECG signal, the color memory of the color code conversion circuit includes the R
An ultrasonic diagnostic apparatus characterized in that color codes are set that give different hues to a portion of an ECG waveform corresponding to a timing delayed by a predetermined time from the wave and a portion of the remaining ECG waveform.