JPH0127743B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an ultrasound diagnostic apparatus that displays an ultrasound moving image (for example, a tomographic image) and a biological signal waveform (for example, an electrocardiogram). This invention relates to a method of specifying a phase (timing), freezing a moving image in that time phase, and displaying a still image.

[Prior art to the invention]

Devices such as those described above have conventionally existed, and the specific time phase is set, for example, to "t milliseconds after the R wave of the electrocardiogram." To set this t milliseconds, the time phase is set by operating a volume or the like while looking at the set value digitally displayed on the screen (or on the operation panel) or the mark displayed on the electrocardiogram waveform.

However, in the case of only digital display,
It is difficult to correspond to the electrocardiogram waveform, and in the case of a mark display type, the waveform moves over time, so the mark also moves accordingly (in the case of a scroll display), making it difficult to set.

[Purpose of the invention]

The present invention is aimed at solving these drawbacks, and is designed to display a waveform for time phase setting separately from the biological signal waveform, and to perform setting by displaying marks on the waveform.

[Embodiments of the invention]

FIG. 1a is a diagram showing a display state of a conventional digital display system, in which an ultrasound tomographic moving image 2 and an electrocardiogram waveform 3 are shown on a display screen 1. Electrocardiogram waveform 3
Assume that the right end shows the current value, and the value moves to the left as time passes, so-called scroll display. Furthermore, the freeze time phase setting value 4 is digitally displayed at the lower left of the screen. When setting the time phase, a volume (not shown) or the like is operated until the digital value reaches the desired value. In this case, it is difficult to grasp the positional relationship with the actual waveform.

Further, FIG. 1B is a diagram showing the display state of the mark display method, in which the position of the mark 5 on the scrolling waveform must be set, and the setting operation itself is difficult to perform.

FIG. 2a is a diagram showing a display state in an embodiment of the present invention, in which a model waveform 6 for time phase setting is provided separately from the original real-time electrocardiographic waveform 3,
A mark display 61 is provided on the model waveform. When setting the time phase, a mark is displayed with a volume control (not shown) 6
1 may be placed at a desired position on the model waveform 6. This model waveform 6 may be a general, typical waveform that is fixedly displayed, or a desired waveform portion may be cut out and stored in memory while viewing the real-time waveform 3 for each patient. may be used as a model waveform.

FIG. 2b is a diagram showing the display state after freezing in the embodiment of the present invention, and shows a still image 2', an electrocardiogram waveform 3' before and after the freezing point, and a mark display 31 indicating the freezing point. indicate.

FIG. 3 is a block diagram of an embodiment of the present invention.
Under the control of the timing controller 10, the ultrasound from the ultrasound transmitter 11 is transmitted from the probe 12,
The reflected ultrasound is received by the receiver 13, converted into a tomographic image signal by the signal processor 14, and displayed as a tomographic image 2 on the display unit 16 via the video signal generator 15.

Further, the electrocardiogram from the electrocardiogram sensor 17 is also displayed as an electrocardiogram waveform 3 via the signal processing section 14 and the video signal generating section 15.

In the present invention, a time phase setting section 18 and a model wave memory 20 are further provided to display the model waveform 6 and to set the time phase while viewing the mark display 61 on the model waveform 6 according to the operation of the volume ram 19. The set value is sent to the signal processing section 14 and used as the freeze timing. That is, it freezes at a timing t milliseconds after the R wave of the real-time electrocardiographic waveform from the sensor 17.

The model waveform memory 20 may only store fixed waveforms, but it may also cut out and store a desired section of the real-time electrocardiographic waveform from the sensor 17.

〔Effect of the invention〕

As described above, according to the present invention, the freeze time phase can be easily and accurately set.

In addition, the above-mentioned moving images include not only tomographic images but also
Any image or waveform that changes moment by moment may be used. Furthermore, the biological signal waveform may be not only an electrocardiogram but also any waveform with periodicity such as a phonocardiogram or an electroencephalogram.

Furthermore, it goes without saying that this does not prevent the use of conventional digital display systems in combination.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a display state of a conventional example, and FIG. 2 is a diagram showing a display state of an embodiment of the present invention. FIG. 3 is a block diagram of one embodiment of the present invention.

Claims (1)

[Claims] 1.Equipped with a means for displaying an ultrasound moving image and a biological signal waveform, and further comprising a means for setting a specific time phase of the biological signal waveform, freezing the ultrasound video image in that time phase, and displaying a still image. In addition to the above-mentioned biological signal waveform display means, the ultrasonic diagnostic apparatus includes:
A means for displaying a model waveform for setting the time phase and a means for setting the time phase on the model waveform are provided, and the ultrasonic wave is moved in the time phase on the original biological signal waveform corresponding to the time phase on the model waveform. A still image time phase setting method in an ultrasonic diagnostic apparatus characterized by freezing an image.