JPH0484956A - Ultrasonic diagnostic device - Google Patents

Abstract

PURPOSE:To record only the data being effective for a diagnosis by selecting the data of one of living body data read out of a cinememory, and real time data obtained from in the living body, and recording the data concerned. CONSTITUTION:Outputs of an A/D converting circuit 3 and a Doppler circuit 4 are inputted to a switching circuit 9, respectively as real time data r1, r2, respectively. Also, to this switching circuit 9, read-out data (c) from a cinememmory 6 is also inputted. Subsequently the switching circuit 9 selects one of the real time data r1, r2 and the read-out data (c) by a switching signal (g) from a CPU 15. To an output of the switching circuit 9, a line scan recorder 11 is connected through a line scan recorder interface 10, and recording of a cathode-ray tube image is executed to recording paper. Accordingly, in accordance with necessity, living body data from the cinememory can be recorded, and recording of only the data being effective for a diagnosis can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ultrasonic diagnostic apparatus, and particularly to an ultrasonic diagnostic apparatus with a cine loop function that stores biological data for a predetermined period and displays a reproduced image thereof.

[Conventional technology]

2. Description of the Related Art In the medical field of the heart, circulatory system, etc., ultrasonic diagnostic devices have been used to observe internal tissues and organs of living bodies. In this ultrasonic diagnostic apparatus, the M mode method is adopted, for example, when displaying the movement of each part inside a living body on a CRT monitor in real time. Furthermore, a line scan recorder, for example, is used to directly record an image on a monitor onto recording paper.

On the other hand, devices equipped with a cinerama memory (hereinafter referred to as cine memory) are also provided. This cine memory stores, when a diagnostic image is frozen, tomographic image data within a predetermined period near the freeze timing, or biological signals for the same period together with this. Therefore, by reading and reproducing the contents of the cine memory after freezing, it is possible to observe, record, measure and diagnose tomographic images and biological signals before and after the freeze timing.

[Problem to be solved by the invention]

In the conventional ultrasonic diagnostic apparatus, when recording an M-mode image on a monitor using a line scan recorder, all images real-scanned for a specified period are recorded on the recording paper of the line scan recorder. That will happen. Therefore, the amount of recording paper used per examinee becomes considerable. On the other hand, not all of the images recorded on the recording paper are used for diagnosis, and in many cases only a portion of them are used for actual diagnosis.

An object of the present invention is to provide an ultrasonic diagnostic apparatus that can record only data useful for diagnosis.

[Means to solve the problem]

The ultrasonic diagnostic apparatus according to the present invention includes a cine memory, a selection circuit, and a recording means. The cine memory stores biometric data for a predetermined period of time. The selection circuit selects either biological data read from the cine memory or real-time data obtained from within the living body. The recording means includes:
It records the data selected by the selection circuit.

[Effect]

In the ultrasonic diagnostic apparatus according to the present invention, the cine memory stores biological data for a predetermined period. Next, the selection circuit selects either the biological data read from the cine memory or the real-time data obtained from within the living body. Then, the recording means records the data selected by the selection circuit.

For example, when the selection circuit selects real-time data, the recording means records the real-time data, and when the selection circuit selects read data from the cine memory (biological data), the recording means records the real-time data. Data is recorded. Therefore, biological data from the cine memory can be recorded as needed, and only data useful for diagnosis can be recorded. As a result, when using a line scan recorder that uses recording paper as a recording medium, for example, only data useful for diagnosis can be recorded on the recording paper, and the amount of recording paper used can be reduced.

〔Example〕

FIG. 1 shows an ultrasonic diagnostic apparatus according to an embodiment of the present invention.

In FIG. 1, a transducer l is used to emit ultrasonic waves into a living body and to receive reflected echoes reflected within the living body. The transducer l has
A wave transmitting/receiving section 2 is connected. The wave transmitting/receiving section 2 includes a transmitting/receiving switching circuit and an amplifying circuit.

It consists of a detection circuit, etc. An A/D conversion circuit 3 and a doubling circuit 4 are connected to the output of the wave transmitting/receiving section 2. In this example, M mode data is obtained as the output of the A/D conversion circuit 3. Further, the Doppler circuit 4 is a circuit for obtaining blood flow information of the living body from the received data obtained by the wave transmitting/receiving section 2. A/D conversion circuit 3 and Doppler circuit j! The output of 84 is input to the switching circuit 5.

Further, the outputs of the A/D conversion circuit 3 and the Doppler circuit 4 are input to a cine memory 6. The cine memory 6 stores M mode data and blood flow data for a predetermined period while being updated sequentially. The output of the cine memory 6 is input to the switching circuit 5. The switching circuit 5 is
This is a circuit for selecting either the output of the A/D conversion circuit 3, the output of the Doppler circuit 4, or the output of the cine memory 6 according to the switching signal from 5. switching circuit 5
A display memory 7 is connected to the output of the 0 display memory 7. The output of the 0 display memory 7 is sent to a subsequent monitor via a D/A conversion circuit 8.

The outputs of the A/D conversion circuit 3 and the Doppler circuit 4 are real-time data rl+r!, respectively. are respectively input to the switching circuit 9. This switching circuit 9 includes
Read data C from the cine memory 6 is also input. The switching circuit 9 is configured to be able to select any one of the real-time data r 1 * r z and the read data C in response to a switching signal g from the CPUI 5 . A line scan recorder 11 is connected to the output of the switching circuit 9 via a line scan recorder interface 10. The line scan recorder 11 has a cathode ray tube embedded with optical fibers, and records a Brown snow image by directly applying the image projected on the cathode ray tube to a recording paper containing a photosensitive material.

The device is also provided with a memory control 12. The memory control 12 is used to designate the addresses of the cine memory 6, display memory 7, and line scan recorder interface 10, respectively. In addition, the wave transmitting/receiving section 2° Doppler circuit 4. Line scan recorder interface 10. and memory control 12 are each controlled by control signals from the CPU 15. A keyboard 16 is connected to the CPLJI 5.

Next, the operation will be explained.

First, the transducer 1 is driven by the wave transmitting/receiving section 2, and an ultrasonic beam is transmitted into the living body.

The reflected echo from inside the living body is received by the transducer 1 and input to the wave transmitting/receiving section 2. In the wave transmitting/receiving section 2, predetermined processing such as amplification and detection is performed on the reflected echo signal. The output of the wave transmitting/receiving section 2 is input to an A/D conversion circuit 3 and a Doppler circuit 4.

The A/D conversion circuit 3 converts the M-mode analog data output from the wave transmitting/receiving section 2 into digital data. Further, in the Doppler circuit 4, quadrature detection or the like is performed on the output of the wave transmitting/receiving section 2, and a Doppler signal is obtained. Each of these signals is input to the switching circuit 5.

When the M mode is selected as the operation mode, the switching circuit 5 selects the output of the A/D conversion circuit 3 and outputs it to the display memory 7. Moreover, when the Doppler mode is selected, the output of the Doppler circuit 4 is selected. A write operation to the display memory 7 is performed according to an address signal from the memory control 12. Display memory 7
The reading of data from the D/D is performed by the memory control 12 in the same manner as described above, and the read data is
The image is sent to the monitor via the A conversion circuit 8 and displayed as an image.

On the other hand, each output of the A/D conversion circuit 3 and Doppler circuit 4 is
The signal is input to the cine memory 6. In the cine memory 6, M mode data and blood flow data for a predetermined period are stored while being updated one after another. Note that writing to the cine memory 6 is performed in accordance with an address signal from the memory control 12, similar to the writing to the display memory 7.

When the cine memory playback mode is instructed from the keyboard 16, a switching signal ``is first inputted from the CPU 5 to the switching circuit 5, and the switching circuit 5 is switched to the output side of the cine memory 6. Data is input to the display memory 7 via the switching circuit 5, and sent to a subsequent monitor for image display.

Next, the recording operation to the line scan recorder 11 will be explained.

The switching circuit 9 receives the outputs of the A/D conversion circuit 3 and the Doppler circuit 4 as real-time data rl+r!, respectively. Also, read data C from the cine memory 6 is input.

When displaying in real time, the switching circuit 9 is switched to the real time data r1 or r2 side. Therefore, real-time data from the A/D conversion circuit 3 or the Doppler circuit 4 is selected depending on the operation mode and input to the line scan recorder interface 10. Then, real-time data r
1 or r2 is recorded on the recording paper of the line scan recorder 11.

Next, when recording the reproduced data from the cine memory 6 on the line scan recorder 11, the switching circuit 9 is controlled by the switching signal g from the CPU 15 which receives a command from the keyboard 16. As a result, the switching circuit 9 is switched to select the read data C, and the read data C from the cine memory 6 is input to the line scan recorder interface 10.

Now, assuming that the data stored in the cine memory 6 are data 20 to 26 as shown in FIG. 2(a), the diagnostician observes each of these data 20 to 26 displayed on the monitor. while specifying the data necessary for diagnosis. Assume now that data 21, 23, and 25 (hatched portions) are designated by the record switch on the keyboard 16.

Then, the command from this keyboard 16 is sent to the CPU 15.
is inputted to the memory control 12 via. As a result, each data 21, 23, 25 in the range specified by the keyboard 16 is read out from the cine memory 6 and sent to the line scan recorder 11. And the second
As shown in figure (b), unnecessary data 20, 22, 24
．． 26 (white area in FIG. 2(a)) is removed, and only the data 21, 23, 25 necessary for diagnosis are recorded on the recording paper of the line scan recorder 11. This saves recording paper. Note that a well-known thermal recorder may be used instead of the line scan recorder 11.

〔Effect of the invention〕

The ultrasonic diagnostic apparatus according to the present invention includes the above-described cine memory, selection circuit, and recording means. Therefore, according to the present invention, only data necessary for diagnosis can be recorded.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of an ultrasonic diagnostic apparatus according to an embodiment of the present invention, and FIG. 2 is a diagram showing data stored in a cine memory and a recording state of a line scan recorder. 6... Cine memory, 9... Switching circuit, 11...
・Line scan recorder. Patent applicant Shimadzu Corporation Representative Patent attorney Yukio Ono

Claims (1)

[Claims] (1) a cine memory that stores biometric data for a predetermined period of time; and a selection circuit that selects one of the biometric data read from the cine memory and real-time data obtained from inside the living body; An ultrasonic diagnostic apparatus comprising: recording means for recording data selected by the selection circuit.