JPS62332A - 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 [Field of Application of the Invention] The present invention relates to an ultrasonic diagnostic apparatus equipped with a digital scan converter having various measurement functions and capable of recording ultrasonic images with a video tape recorder.

(Background of the Invention) This type of device includes a video tape recorder (hereinafter referred to as VT).
There is also a digital scan converter (hereinafter referred to as DSC) that allows various measurements such as distance measurement and area measurement to be performed on a reproduced image displayed on a display device using a digital camera (hereinafter referred to as R).

By the way, various measurements on such a reproduced image are performed when the image is recorded, in other words, when the image is recorded, the DS is used under the same conditions as the inspection mode, image magnification, etc. that were given to the DSC during the inspection.
This cannot be done correctly unless C is activated.

However, with conventional devices of this type, in such a case, the inspector had to determine each condition from the reproduced image and reset each part of the device by operating each switch on the control panel. Therefore, operations for setting conditions performed during measurement are troublesome, and operational errors are likely to occur, resulting in low reliability of measurement results and long measurement time.

[Purpose of the invention]

The present invention has been made to solve the above-mentioned problems, and eliminates the need for manual operations for setting conditions during measurement, thereby eliminating the possibility of operational errors and increasing the reliability of measurement results. It is an object of the present invention to provide an ultrasonic diagnostic apparatus that has improved performance and shortens the time required for measurement.

[Summary of the invention]

In the device of the present invention, the VTR recording system has a video channel and an audio channel, and the video channel records ultrasound images, but the audio channel only records Doppler sounds and comments during the examination. Furthermore, this method was developed by noting that there are usually two audio channels. In other words, the setting conditions given to the DSC during inspection using the device of the present invention are
This system records on the same videotape (for example, the above-mentioned audio channel) together with the recording to the TR, and when playing back the VTR recorded image, each part of the device is automatically reset to the recorded setting conditions. .

[Embodiments of the invention] Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of an ultrasonic diagnostic apparatus according to the present invention, in which 1 is a probe that transmits and receives ultrasonic waves;
is a transmitting/receiving circuit that sends a signal to the probe 1 to cause it to transmit ultrasonic waves, and to which a received signal from the probe 1 is input. 3
is a control panel that allows you to set various conditions (setting conditions) such as inspection modes such as B mode and M mode, image magnification, or sweep speed when M mode is selected, as well as various measurements such as distance and area. give to DSC4
The main configuration is a video circuit 4a and a control circuit 4b including a CPU, and controls the transmitting/receiving circuit 2 according to setting conditions given from the control panel 3. VTR
5 is also controlled by the DSC 4, and sends and receives signals to and from the DSC 4 to record and reproduce ultrasound images. Reference numeral 6 denotes a display device for displaying the reproduced image of the VTR 5, here a television monitor (hereinafter referred to as a TV monitor). 7 is a setting condition recording/resetting circuit whose details will be described later, which records the setting conditions given from the control panel 3 at the time of examination to the audio channel of the same video tape together with the recording of the ultrasound image to the VTR 5; When playing back recorded images, the recorded setting conditions are given to the DSC 4.

Next, the operation of the above-mentioned device of the present invention will be explained. First, conditions such as inspection mode are set by the control panel 3, and when these (setting conditions) are given to the control circuit 4b of the DSC 4, the CPU of the control circuit 4b reads them, and the transmission/reception circuit 2 and the video circuit 4a of the DSC 4 read them. send a control signal to. As a result, the transmitter/receiver circuit 2 operates the probe 1 according to the set conditions and sends the received signal to the video circuit 4a of the DSC'4.
send to The video circuit 4a processes the received signal according to the setting conditions, and transmits it to the VTR as a video signal of an ultrasound image.
5 to be recorded (recorded), and also sent to a TV monitor 6 to be displayed as an ultrasound image. Furthermore, at that time, DS
The setting conditions given by the control panel 3 from the control circuit 4b of the C4 are sent to the VTR 5 as a frequency signal via the setting condition recording/resetting circuit 7, and are recorded on the audio channel of the same video tape together with the recording of the ultrasound image. be done. Furthermore, when playing back recorded images on the VTR 5, a video signal is sent to the video circuit 4a of the DSC 4, and a reproduced image is projected on the TV monitor 6. At the same time, the frequency signal recorded on the audio channel as described above is played back and the set conditions are It is sent to the recording/resetting circuit 7. This circuit 7 is
The received frequency signal is returned to a signal containing the setting conditions at the time of recording the ultrasonic image, that is, at the time of inspection, and is then processed by the DSC.
4 control circuit 4b. As a result, the CPU of the control circuit 4b sends control signals to the video circuit 4a, the transmitting/receiving circuit 2, etc., and resets each part of the apparatus to the same conditions as at the time of inspection.

Therefore, at this time, by operating the control panel 3 while viewing the reproduced image on the TV monitor 6, the DSC 4
can be activated to accurately measure distances and areas.

FIG. 2 is a block diagram showing a specific example of the essential parts of the above-mentioned apparatus of the present invention, which will be explained below. Here, the various conditions that can be set on the control panel 3 are as follows: ), 0.8° per image magnification 1.0.1.5 and 2.
If we assume 2 seconds and 4 seconds for the sweep speed when the 0 and M modes are selected, there are 8 items in total, and even if an item representing the type of condition is added, the setting condition can be specified with a 4-bit digital signal. Conditions are now set on the panel 3, and the DSC 4
If a 4-bit digital signal containing setting conditions is given from the CPU of the control circuit 4b to the setting condition recording/resetting circuit 7, the D/A converter 7a of the circuit 7 converts the input digital signal into an analog signal. Convert to This analog signal is converted into a frequency signal a by the V/F converter 7b.
(see FIG. 3C), and is sent to the VTR 5 and recorded on the audio channel of the videotape. During playback, the frequency signal a' is sent from the VTR 5 (see Figure 3 C).
is input to the second input terminal of AND gate 7c.

The first input terminal of AND game) 7c receives gate signal b (third
(see Figure C) is input via the inverter 7d, so
From the AND gate 7c, the gate signal Ft L I
While at level t, frequency signal a' is output. The frequency of the output signal of this AND game 7c is counted by a frequency counter 7e, and its final value is latched into a latch circuit 7f at the rising edge of the gate signal S.

This latched value (digital value) is the signal d (third
At the time of inspection, in the TL between IF L F Lebel (see diagram),
The control circuit 4 outputs a 4-bit digital signal containing the same setting conditions as those given to the D/A converter 7a.
It is read into the CPU of b. As a result, the video circuit 4
a. Each part of the device, such as the transmitter/receiver circuit 2, is reset to the same conditions as at the time of inspection. In addition, the frequency counter 7e
The signal to the first input terminal of the AND gate 7c is the delay circuit 7
It is cleared at the falling edge of the signal C (see FIG. 3C) which is delayed by time g and is applied to the clear terminal CL.

〔Effect of the invention〕

As described above, the present invention allows the setting condition recording/resetting circuit to automatically reset each condition when performing various measurements on a reproduced image by a VTR, eliminating the need for manual operation. This has the effect of eliminating operational errors, increasing the reliability of measurement results, and shortening the time required for measurement.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the device of the present invention, and FIG.
The figure is a block diagram showing a specific example of the main parts of the device, and FIG. 3 is a signal waveform diagram of each part in FIG. 2. DESCRIPTION OF SYMBOLS 1... Probe, 2... Transmission/reception circuit, 3... Control panel, 4... DSC, 5... VTR, 6...
...TV monitor, 7...Setting condition recording/resetting circuit. Patent applicant Hitachi Medical Co., Ltd. Agent Patent attorney Masami Akimoto Minoru II/If 2nd WJ f7 3rd WJ

Claims (1)

[Claims] Signals from the probe that transmits and receives ultrasound are sent via a transmitting and receiving circuit to a digital scan converter with various measurement functions, which processes the signals and displays an ultrasound image on a display device, and the image is recorded on videotape. In an ultrasonic diagnostic apparatus capable of recording with a recorder, the setting conditions given to the digital scan converter at the time of examination are recorded on the same video tape together with the recording of the ultrasound image on the video tape recorder, and the image recorded on the video tape recorder is recorded on the same video tape. An ultrasonic diagnostic apparatus comprising a setting condition recording/resetting circuit that provides the recorded setting conditions to the digital scan converter during reproduction.