JP2992546B2 - Ultrasound diagnostic equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] A frame memory for processing a reflected wave signal of an ultrasonic wave scanned from an ultrasonic probe to a living body to perform a B-mode display for displaying a tomographic image of the living body on a display means; , An ultrasonic diagnostic apparatus having a scroll memory for displaying a scroll mode for displaying real-time biological information on a display means, wherein a time difference occurs between a B mode display and a scroll display of other M modes, electrocardiograms, heart sounds, etc. The scroll memory is provided with output delay means for synchronizing with the output from the frame memory.

[Industrial applications]

The present invention relates to an ultrasonic diagnostic apparatus, and in particular, a frame memory for performing a B-mode display for displaying a tomographic image of a living body by processing a reflected wave signal of an ultrasonic wave scanned from the ultrasonic probe to the living body, Biological information in real time, eg M
Ultrasound diagnostic apparatus having scroll memory for displaying modes, heart sounds, and electrocardiograms in scroll mode [Prior art] Generally, an ultrasonic diagnostic apparatus obtains a tomographic image of a living body without adversely affecting the living body Often used because it can. As shown in FIG. 4, such an ultrasonic diagnostic apparatus uses the ultrasonic probe 11 to scan the living body and transmit the reflected wave from the discontinuous portion of the acoustic impedance of the living tissue, as described above. The information is received by the ultrasonic probe 11 and the information inside the living body is obtained from the reflection time of the reflected wave and the like. 4th
In the figure, reference numeral 11 denotes an ultrasonic probe for transmitting ultrasonic waves and detecting reflected waves as described above, and electrically connects a plurality of transmitting elements formed of piezoelectric elements such as ZPL (lead zirconate titanate). Scanning is performed (in FIG. 4, the scanning situation is indicated by a fan shape). Reference numeral 12 denotes a transmission / reception unit that controls transmission and reception of the ultrasonic probe, 13 denotes a scan control unit that performs scanning control of the above-described ultrasonic probe, 14 denotes a frame memory that stores a B-mode image, and 15 denotes an M memory. Mode, Doppler mode,
Scroll memory for displaying other biological information, for example, electrocardiogram, heart sound signal, 16 is the above-mentioned electrocardiogram, electrode and microphone for detecting heart sound, 18 is an amplifier (AMP) for amplifying the signal of this electrode and the like, and Reference numeral 19 denotes a video control unit for displaying the contents of the frame memory 14 and the contents of the scroll memory 15 on the CRT display device 18, and reference numeral 20 denotes a microprocessor (MPU) for controlling the entire device.

In such an apparatus, as shown in FIG. 6, a display screen 23 displays a tomographic image 21 of a living body, which is a B-mode image stored in a frame memory, and an M-mode, electrocardiogram, and heart sound stored in a scroll memory. , And the like, which changes over time.

As shown in FIG. 5, the scroll memory controller outputs the data stored in the scroll memory 25 at the address designated by the counter 26 by the write signal W from the register holding the value output from the counter 26. Multiplexer (MUX) 2 for read signal R as address value
In FIG. 8, read / write is switched one after another and displayed. Incidentally, reference numeral 30 in the figure schematically shows a B-mode frame memory.

[Problems to be solved by the invention]

By the way, in the above-described conventional ultrasonic diagnostic apparatus, since the M-mode image ultrasonic probe is displayed at the stage when one scan is completed, the M-mode image is displayed almost in real time. , The electrocardiogram and the heart sound are displayed at different times. Such a time difference causes a difference between the display of the B-mode image and the display of the M-mode, electrocardiogram, and heart sound when diagnosing a fast-moving living body such as a heart valve.
For example, when the image in the B mode is, for example, 10 frames per second, the M mode, the electrocardiogram, and the heart sound are displayed about 8 pixels earlier, and it is necessary to diagnose and consider the image in consideration of the fact. There's a problem.

An object of the present invention is to provide an ultrasonic diagnostic apparatus capable of preventing a time difference between the display of the above-described B mode and the display of other M modes, electrocardiograms, heart sounds, and the like.

[Means for solving the problem]

Means for solving the above problems in the present invention are:
A frame memory for performing a B-mode display for displaying a tomographic moving image of a living body on a display means by processing a reflected signal of an ultrasonic wave scanned from an ultrasonic probe to a dynamic inspection area of the living body;
In an ultrasonic diagnostic apparatus having a scroll memory for performing a scroll mode display for displaying a waveform of a temporal change in biological information in real time on a display means, the biological information for displaying a waveform output from the scroll memory is stored in advance. Ultrasound characterized by providing output delay means for delaying a designated predetermined time, and displaying the biological information output from the scroll memory in synchronization with a tomographic image of the living body output from the frame memory. It is a diagnostic device.

[Action]

According to the present invention, the output delay means delays and displays the scroll mode for displaying the real-time biological information in the scroll memory so as to synchronize with the output from the frame memory. The display is displayed at the same timing, so that it is not necessary to consider a time delay or the like in the diagnosis, and the ultrasonic diagnosis can be easily performed.

〔Example〕

An embodiment of an ultrasonic diagnostic apparatus according to the present invention will be described below with reference to the drawings.

FIG. 2 and FIG. 3 show an embodiment of the ultrasonic diagnostic apparatus according to the present invention. In the present embodiment, the entire configuration of the ultrasonic diagnostic apparatus is substantially the same as that shown as a conventional example. In this embodiment, as shown in FIG. 2, a register 32 in which a delay time is written by a microprocessor 31 as a delay means,
And an adding circuit 33 for adding the delay time set in the counter 26 to the address specified by the counter 26. The adding circuit 33 adds a delay time t / 2 set in the register, that is, a half of the B-mode scanning time t, to the column address of the signal of the scroll memory, as shown in FIG. The electronic signal is displayed at the same time as displaying the center of the B-mode display. Note that this time may be selected as appropriate, and in this embodiment, it is set to one half of the time required for displaying the B mode. As a result, when the first data capture is displayed as shown in FIG. 3, the data for the scroll image captured at the time of data capture is displayed simultaneously with the first display of the B mode.

Therefore, according to the present embodiment, since the biological signal corresponding to the displayed image can be displayed in the B mode, the correspondence between the image and the biological information can be easily obtained, and the ultrasonic diagnosis can be more easily performed. .

〔The invention's effect〕

As described above, according to the present invention, a B-mode for processing a reflected signal of an ultrasonic wave scanned from an ultrasonic probe to a dynamic inspection area of a living body to display a tomographic moving image of the living body on a display unit In an ultrasonic diagnostic apparatus having a frame memory for performing display and a scroll memory for performing a scroll mode display for displaying a temporal change in biological information in real time on a display means, a waveform output from the scroll memory Output delay means for delaying the biological information for display by a predetermined time designated in advance, and synchronizing the biological information output from the scroll memory with a tomographic moving image of the biological output from the frame memory to generate a waveform When performing ultrasonic diagnosis on a dynamic examination region of a living body, the display means B
Since the moving image displayed in the mode and the biological signal in the display area corresponding to the image can be synchronized and displayed in a waveform, it is easy to associate the tomographic moving image of the living body with the waveform of the biological information. This makes it possible to more easily perform dynamic ultrasonic diagnosis of a living body.

[Brief description of the drawings]

1 is a principle diagram of the present invention, FIG. 2 is a diagram showing an embodiment of the ultrasonic diagnostic apparatus according to the present invention, FIG. 3 is a time chart showing the operation of the ultrasonic diagnostic apparatus shown in FIG. FIG. 4 is a block diagram showing the overall configuration of an ultrasonic diagnostic apparatus to which the present invention is applied, FIG. 5 is a block diagram showing the configuration of a conventional ultrasonic diagnostic apparatus, and FIG. It is a figure showing a display picture of an ultrasonic diagnostic equipment. DESCRIPTION OF SYMBOLS 1 ... Ultrasonic probe 2 ... Display means 3 ... Frame memory 4 ... Scroll memory 5 ... Output delay means

Claims (1)

(57) [Claims] 1. A frame memory for processing a reflected signal of an ultrasonic wave scanned from an ultrasonic probe to a dynamic inspection area of a living body to perform a B-mode display for displaying a tomographic moving image of the living body on a display unit. And a scroll memory for performing a scroll mode display for displaying a waveform of a temporal change of the biological information in real time on a display means, wherein the biological information for displaying a waveform output from the scroll memory is provided. Output delay means for delaying the biological information output from the scroll memory in synchronism with a tomographic moving image of the living body output from the frame memory to display a waveform. Ultrasound diagnostic equipment.