JPS58200737A - Medical m mode image playback 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 The present invention provides a medical
This invention relates to a mode image reproducing device.

With conventional IJ near- or sector-type ultrasonic tomography devices, it is rare to obtain ideal ultrasonic tomographic images (hereinafter simply referred to as tomographic images) US as shown in Figures 1 (A) and (B). In most cases, tomographic images US as shown in FIGS. 2(A) and 2(B) are obtained.

Therefore, the M mode image obtained from this tomographic image is the second
It is in the direction shown by the solid line in Figures (A) and (B), and is slightly deviated from the ideal M mode image in the direction shown by the broken line.

Therefore, in order to obtain an ideal M-mode image, a separate M-mode reliable ultrasound beam generation mechanism is required, and since the tomographic image and the M-mode image are taken with separate ultrasound beams, the examination time becomes long and the patient There were drawbacks such as burden.

SUMMARY OF THE INVENTION An object of the present invention is to provide a medical M-mode image reproducing apparatus that eliminates the above drawbacks and obtains an M-mode image from a medical tomographic image from a direction different from the radial direction of an ultrasound beam or the like.

The features of the present invention include a storage device that stores medical tomographic images, and an address corresponding to a specified straight line or curved line of the storage device.
XY readout means for reading out in Y coordinate form, XY coordinate designation means for designating the straight line or curved line, interpolation means for interpolating the read signal, and displaying the output of the interpolation means as an M mode image. The reason is that the display device is equipped with a display device.

Hereinafter, the present invention will be described in detail along with examples.

FIG. 3 is a diagram showing the configuration of an embodiment of the present invention in a professional manner. 1 is a tomographic image signal input terminal, 2 is an ultrasonic synchronization signal input terminal, 3 is a tomographic image signal US, and 5 is a M This is an M-mode direction specifying device that specifies the direction of the mode, such as joystick, ri, and tiger.

Kuball 2. This is done using a light pen, etc.

7 is a tomographic image signal [JS
8 is a write image loading/reading address switching circuit, 9 is an interpolation circuit that interpolates the output of the 4 memory circuits 4, and 10 is a converter for converting the interpolated digital tomographic image signal US into an analog signal. Digital
An analog conversion circuit, 11 is an echocardiogram (UOO) continuous recording device, 12 is a synchronization signal generator, 16 is a Y-axis direction (vertical direction) sweep circuit of the M-mode image display device, and 14 is an X-axis of the M-mode image display device. An axial direction (time axis) sweep circuit 15, a cathode ray tube 17, an X and Y sweep circuit of a tomographic image/M mode beam display device, and 18 a tomographic image/M mode beam display device such as a cathode ray tube.

Next, the operation of this embodiment will be explained with reference to FIG.

M-mode image UC from a direction different from the direction of the ultrasound beam
In order to obtain G, first, the tomographic image signal US input to the tomographic image signal input terminal 1 is directly displayed on the tomographic image/M mode beam display device 18 through the mixing circuit 16. At the same time, the tomographic image signal US is converted by the analog-to-digital conversion circuit 6.

Next, the M-mode direction specifying device moves the portion of the tomographic image displayed on the display device 18 where you want to obtain the M-mode image so that, for example, a linear mark MK as shown in FIG. 4 is displayed. Set 5. The output of this M mode direction specifying device 5 is output from the XY read address generation circuit 7. The signal is inputted to the display device 18 via the mixing circuit 16 and displayed as a linear mark MK superimposed on the displayed tomographic image. The data of the address corresponding to the displayed linear mark MK is sequentially read out by XY access.

However, this read M-mode image is input to the interpolation circuit 9 in order to fill in the gaps between these coarse images and make it a smooth M-mode image. be done. Here, the interpolated data is displayed on the echocardiogram continuous recording device 11 and the M-mode image display device 15 through the digital-to-analog conversion circuit 10.

FIG. 5 shows the configuration of another embodiment of the present invention.

21 is a tomographic image signal input terminal into which the tomographic image signal US is input, 22 is an analog-to-digital conversion circuit for converting the tomographic image signal US into a digital signal, and 26 is a diagram shown in FIG.
24 is an image memory circuit having a storage capacity sufficient to form one tomographic image; 24 is a synchronization signal separation circuit for separating a synchronization signal from the tomographic image signal US; and 25 is a tomographic image signal US.
26 is an M-mode direction specifying device, 27 is an XY
28 is a tomographic image readout address generation circuit; 29 is an address switching circuit; 60 is an M-mode interpolation circuit; 61 is a digital-to-analog conversion circuit; 32 is M
Mode image continuous recording device, 63 is a display memory circuit, 34
65 is a tomographic image write address generation circuit, 66 is a display read address generation circuit, 37 is an address switching circuit, 68 is a synchronization signal generation circuit, 69 is a television synchronization signal generation circuit, and 40 is an M mode image write address generation circuit. The digital-to-analog conversion circuit 41 is a television display device.

Next, the operation of this embodiment will be explained with reference to FIG.

When the tomographic image signal US from the ultrasonic tomography apparatus with digital scan converter is input to the input terminal 21, this tomographic image signal LJS is converted into a digital signal by the analog-to-digital conversion circuit 22. At the same time, the tomographic image signal US
A synchronization signal is separated from the synchronization signal by a synchronization separation circuit 24, and an address signal synchronized with the synchronization signal is generated by a tomographic image writing address generation circuit 25. Address switching circuit 29
is switched to the tomographic image writing side, and the information is stored according to the address signal.

A direction corresponding to a desired portion is designated, and the data of the M mode image is read out using the address output from the address generation circuit 27. The read data is sent to the M mode image interpolation circuit 60.
After interpolation, the signals are input to the M-mode continuous image recording device 62 through the digital-to-analog conversion circuit 61 and recorded. At the same time, the M mode image write address generation circuit 34 stores the address in the display memory circuit 63. Also,
Data forming a tomographic image and an M-mode image as shown in Section 6 are stored. This stored data is read out through the display read address generation circuit 66, address switching circuit 67, television synchronization signal generation circuit 39, and digital-to-analog conversion circuit 40, and is input to the television display device 41.

As a result, a tomographic image as shown in FIG. 4 is displayed.

Furthermore, in both of the above embodiments, as shown in FIG.
The mode direction indicating beam line MK may be curved, or the two-channel M mode direction indicating beam line MK1.K may be curved as shown in FIG. It is also possible to set it to MK, 2. Furthermore, it is also possible to display an M-mode image of the heart in a CT apparatus.

It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without changing the gist thereof.

As explained above, according to the present invention, it is possible to obtain an M-mode image in a direction other than the direction of the ultrasound beam, and the M-mode image of a cross section not only on a straight line but also on a curved line can be obtained depending on the reading specification method. This makes it possible to improve diagnostic accuracy by simultaneously displaying biological signals. Also,
By using an image memory such as a VTR, it is possible to shorten the examination time (2 diagnostic times, etc.). Furthermore, M mode can be reproduced even with conventional ultrasonic tomography equipment that does not have an M mode image display function.
You can improve your financial performance.

[Brief explanation of the drawing]

Figures 1 (A) and (B) and Figures 2 (A) and (B) are diagrams for explaining the problems of conventional ultrasonic tomography devices with an M-mode image display function. FIG. 4 is a diagram for explaining the operation of the embodiment of FIG. 3, and FIG. 5 is a diagram showing the configuration of another embodiment of the present invention in a professional manner. 6 and 7 are diagrams showing other examples of the display beam line of the M mode image. 1.21 Tomographic image signal input terminal 2 Ultrasonic synchronization signal input terminal 3.22 Analog-to-digital conversion circuit 4.26 Image memory circuit 5.26. ,,M mode direction designation device 6.25 Tomographic image signal writing address generation circuit 7.27
．． ,,XY read address generation circuit 8.29.57
Address switching circuit 9.30 Interpolation circuit 12.38 Synchronization signal generation circuit 16 Y-axis direction sweep circuit 14-, ) (Axis direction sweep circuit 15 M-mode image display device 24 Synchronization signal separation circuit 28 Tomographic image readout address generation circuit 63 -Display memory circuit 34...M mode image write address generation circuit 65・Tomographic image write address generation circuit 36 Display read address generation circuit 69 Television synchronization signal generation circuit agent Patent attorney Aki 1) Collection Figure 1 US (A) (
El) Figure 2 U8 (A) (B) Fu Ward C Tsuzuka Figure 4 Figure 6 Figure 7

Claims (1)

[Claims] A storage device for storing medical tomographic images, an XY reading means for reading out an address corresponding to a specified straight line or curved line in the storage device in the form of XY coordinates, and an XY coordinate specifying means for specifying the straight line or curved line. , a medical M-mode image reproducing device comprising: interpolation means for interpolating signals read out in the form of XY coordinates; and a display device for displaying the output of the interpolation means as an M-mode image.