JPS638780B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an ultrasonic diagnostic apparatus.

For example, it is known that when ultrasound echoes from malignant tumors and benign or normal tissues are Fourier transformed, their spectra exhibit distinctive patterns.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an ultrasonic diagnostic apparatus that can Fourier transform only the echoes of a particularly noteworthy region while viewing a tomographic image, and compare the Fourier transform with a pattern of a normal example.

The ultrasonic diagnostic apparatus of the present invention includes a first selection means for selecting a desired one from a plurality of ultrasonic beams in a linear ultrasonic diagnostic apparatus, and an ultrasonic beam selected by the first selection means. an A-mode display device for displaying an A-mode image; a second selection means for selecting a desired range of the A-mode image;
A Fourier transform means for Fourier transforming the waveform signal selected by the selection means, a Fourier transform spectrum display device for displaying the Fourier transform result, a memory for storing various kinds of reference pattern information, and one piece of information in the memory. and means for selecting and displaying the Fourier transform spectrum on the Fourier transform spectrum display device in a superimposed manner.

FIG. 1 shows a display example according to an embodiment of the present invention. A region 2 of particular interest is selected by the first selection means on the B-mode image 1 of the linear ultrasound diagnostic device, and the A-mode image 5 of the selected one echo signal is placed on the side of the B-mode image 1. It is displayed on the other display device 4. In order to display the echo signal selected by the first selection means, the brightness of the scanning line corresponding to the echo is increased to obtain a bright line 3. Further, the second selection means selects a desired range of the A-mode image 5, for example, the region of interest 2, and in order to display the range, the two horizontal bright lines 6 and 7 are vertically displaced according to the selection. I try to do that. A Fourier transform spectrum display device 8 displays a Fourier transform signal 10 obtained by Fourier transforming a waveform signal of an A-mode monitor image in a range narrowed by two bright lines 6 and 7, and a Fourier transform pattern related to a normal region stored in a memory. 9
The two waveforms are displayed in a superimposed manner so that the two waveforms can be directly compared and observed.

FIG. 2 shows a block diagram of an electric circuit according to an embodiment of the present invention. The transducer 11 mutually converts electrical signals and ultrasonic waves, and a plurality of transducers are arranged in parallel to send out a plurality of beams and receive a plurality of echoes. These plurality of echo signals are displayed on the B-mode monitor image display device 1 via a known wave transmitting/receiving circuit and an image synthesis circuit 15. Here, the cursor position control circuit 12 of the B-mode monitor, which constitutes the first selection means, has adjustment means such as a variable resistor, and one echo signal selected by this is taken out from the image synthesis circuit 15. The image is displayed on the A-mode monitor image display device 4 via the image synthesis circuit 17 of No. 2, and
The level of the scanning line corresponding to the selected echo signal is increased by the adder 16 and displayed as a luminance of 3. The A-mode monitor cursor position control circuit 13, which constitutes the second selection means, has two adjustment means that can be adjusted independently of each other, and this control signal is introduced into the second image synthesis circuit 17 to control the A-mode monitor. Two horizontal bright lines 6 and 7 are displayed on the image, and the echo signal is introduced into the Fourier transform circuit 18, and only the portion selected by the second selection means of the selected one echo signal is subjected to Fourier transform. Make it convert. The thus Fourier transformed output is displayed on the Fourier transform spectrum display device 8 via the third image synthesis circuit 19. On the other hand, in the memory 20, Fourier transform spectral patterns of normal cases regarding a large number of major parts are written in advance, and the content of the address specified by the part selector 14, which is composed of a keyboard, etc., is read out and the data is transferred to the D/A converter. After being converted into an analog signal by 21, the third image synthesis circuit 19 displays the echo signal superimposed on the Fourier transform output of the echo signal to be diagnosed.

The present invention provides a B-mode monitor display device or an A-mode monitor display device.
Instead of separately providing a mode monitor display device and a Fourier transform spectrum display device, it is also possible to switch the display using a changeover switch.In addition to simply displaying the Fourier transform output waveform, a microprocessor and memory are also provided to monitor the normal operation. It is also possible to perform various data processing such as recording examples and abnormal cases, averaging, and dispersion.

According to the present invention, diagnosis can be made by comparing the Fourier transform output waveform of an A-mode image of a particularly noteworthy region with the Fourier transform output waveform of a normal example of that region, making the diagnosis even more accurate. The uses of ultrasound diagnostic equipment will also be expanded.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a display according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of an electric circuit according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... B mode monitor display device, 4... A mode monitor display device, 8... Fourier transform spectrum display device, 3, 6, 7... Bright line, 9... Reference pattern, 10... Fourier transform spectrum, 1
DESCRIPTION OF SYMBOLS 1... Transducer, 12... First selection means, 13... Second selection means, 14... Part selector, 18... Fourier transform circuit, 20... Memory, 19... Image synthesis circuit .

Claims (1)

[Claims] 1. A first selection means for selecting a desired one from a plurality of ultrasound beams in a linear ultrasound diagnostic device, and an A-mode display for displaying an A-mode image of the ultrasound beam selected by the first selection means. a second step to select the desired range of the device and its A-mode image;
a selection means, a Fourier transform means for Fourier transforming the waveform signal selected by the second selection means, a Fourier transform spectrum display device for displaying the Fourier transform result, and a memory for storing various kinds of reference pattern information. , means for selecting one piece of information in the memory and displaying the selected information in a superimposed manner on the Fourier transform spectrum display device.