JPH02193655A - Ultrasonic diagnostic device - Google Patents

Abstract

PURPOSE:To respectively designate the pieces of display magnification of ultrasonic images to be simultaneously displayed by equipping the subject ultrasonic diagnostic device with a transformation part to transform ultrasonic image data corresponding to display areas indicated by a designating means into display data having the pieces of designated display magnification. CONSTITUTION:A transformation part 20 transforms the coordinates of the respective ultrasonic image data whenever prescribed time passes based on the pieces of display magnification set in a memory 21 and stores the transformed data into corresponding areas in a frame memory 8. Thus, both of display areas I and II are respectively displayed with a piece of display magnification 1, and while a still image is displayed on the display area I, a real-time moving image is displayed on the display area II. Here, when the piece of display magnification of the display area II is to be magnified double, the display area II and a piece of magnification 2 are designated and inputted from a function part 7. Thereupon, a main control part 23 updates the piece of magnifi cation from 1 to 2 and instructs the transformation part 20 to change the piece of magnification. In such a manner, out of two sets of ultrasonic image to be displayed simultaneously, the ultrasonic image of the display area II, for which the instruction is inputted, can be magnified double and displayed.

Description

[Detailed Description of the Invention] [Summary] The present invention relates to an ultrasound diagnostic apparatus, and an object of the present invention is to individually change the display magnification of a plurality of ultrasound images displayed on the same screen to facilitate comparison. In an ultrasonic diagnostic apparatus that displays a plurality of ultrasound images in different display areas on the same screen, a designation means for designating a display magnification and the display area to be displayed at the display magnification; a conversion unit that converts the ultrasound image data corresponding to the display area into display data of the designated display magnification, and converts a plurality of ultrasound images displayed on the same screen to each designated display Configure to display at magnification.

[Industrial application field] The present invention relates to improvements in ultrasonic diagnostic equipment.

2. Description of the Related Art Ultrasonic diagnostic apparatuses that emit ultrasound and display ultrasound images such as tomographic images based on the reflected waves for diagnosis have become widespread.

This ultrasonic diagnostic equipment is usually configured so that the screen is divided into multiple parts to simultaneously display multiple ultrasound images, and the display magnification can be changed to display the images.However, conventionally, the display magnification was common to all screens. Therefore, if you want to zoom in and observe a region of interest while referring to the overall image, you have to compare it on two screens with different display magnifications, which poses problems such as difficulty in comparison and complicated operations. .

Therefore, there is a need for an ultrasonic diagnostic apparatus that can simultaneously display images at different display magnifications.

[Conventional technology]

FIG. 3 is a block diagram of a conventional ultrasonic diagnostic apparatus, and FIG. 4 is an enlarged explanatory diagram.

In FIG. 3, the probe 1 is composed of a plurality of transducers, and the phases of the pulses applied from the transmitter 2 are controlled, respectively, and the ultrasonic wave is emitted in a sector shape (direction 21 to in).

On the other hand, the receiving unit 3 receives reflected waves from each direction (line), and the intensity of the reflected waves relative to the distance (depth) (
direction 11 to nn
is stored in the corresponding line buffer 4a or 4b.

The ultrasound image data stored in the line buffer 4a or 4b is coordinate-transformed into sectors, stored in the frame buffer 8 corresponding to the display screen, read out by the display control unit 11, and displayed on the display unit 3. Ru. As a result, a tomographic image as shown in FIG. 4 is obtained.

Note that the line buffers 4a and 4b store ultrasound image data of the same region or different regions, respectively, and when displaying them simultaneously, the contents of the line buffers 4a and 4b are stored in display areas I and II of the frame buffer 8. Expanded to each corresponding area.

The ultrasound image data stored in the line buffers 4a and 4b is data up to a depth set earlier than the surface of the probe I, and when the display magnification is 1, the entire image, that is, all data in the line buffers 4a and 4b, is The data is developed in a predetermined area of the frame memory 8.

The display magnification of the tomographic image displayed in this way can be changed, for example, to [
If you specify 2x J, the data from depth 0 to D/2 will be enlarged and displayed, and the data from depth D/2 to D will be enlarged by continuous or stepwise scrolling using the cursor keys (not shown). Is displayed.

FIG. 4 shows an example in which the contents of the line buffer 4a are doubled and expanded over the entire area of the frame memory 8.

When the display magnification 2 is specified, the conversion unit 20 first converts the addresses corresponding to the depth 0-D/2 of each line into 2
Multiply the coordinates into sectors, and then frame memory 8
The value obtained by adding the offset corresponding to the upper point P1 is set as the address of the frame memory 8, and the corresponding ultrasound image data is transferred.

Similarly, when scrolling downward, after doubling the addresses of D/2 to D and converting the coordinates, line buffer 4
Address on a [ff1n/2. D/2 ] is the point P1
Subtract the offset as shown in and store the corresponding ultrasound image data. At this time, data outside the predetermined area of the frame memory 8 is masked.

The display magnification designation described above is common on the same screen, and all tomographic images in the display area 1.1T shown in FIG. 3 are displayed at the same display magnification.

In the figure, the measurement unit 9 measures the distance between two points specified on the display screen using, for example, a trackball 10, and measures based on the address on the frame memory 8 and the display magnification, and outputs the measurement data. is stored in the memory 12 and displayed in a predetermined display area.

[Problems to be Solved by the Invention] As explained above, in conventional ultrasound diagnostic apparatuses, when a display magnification is specified, all of the plurality of simultaneously displayed ultrasound images are displayed at the same display magnification.

Therefore, in order to compare the overall image with a small display magnification and the enlarged ultrasound image of the area of interest, it is necessary to compare the images on two screens with respective display magnifications, which may be difficult or difficult to compare. The problem was that it was troublesome.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an ultrasonic diagnostic apparatus in which display magnifications of simultaneously displayed ultrasonic images can be individually specified.

[Means for Solving the Problem] In order to achieve the above object, the ultrasonic diagnostic apparatus of the present invention has the following features:
As shown in FIG. 1, a principle diagram of the present invention, a designating means (30
), and a conversion unit (20) that converts ultrasound image data (50) corresponding to the display area designated by the designation means into display data (5I) of the designated display magnification.

[For production]

A display magnification and a display area to which the display magnification is applied are input through an operation unit serving as the specifying means 30.

Thereby, the converter 20 converts the ultrasound image data corresponding to the designated display area into display data at the designated display magnification and displays the data.

As a result, a plurality of simultaneously displayed ultrasound images can be displayed at a desired display magnification, making comparison easier and reducing the number of operations.

〔Example〕

Embodiments of the present invention will be described in detail with reference to the drawings.

In this embodiment, an example is shown in which two areas are displayed simultaneously, left and right, and the display magnification is determined and measured for each area.

FIG. 2 is a block diagram of the ultrasonic diagnostic apparatus according to the embodiment. In the figure, 20 is a conversion unit that converts the ultrasound image data stored in the line buffers 4a and 4b into display data of a designated display magnification, and stores and updates the data in the corresponding areas of the frame memory 8. , 21 is a memory that stores the specified input display area and display magnification in correspondence; 23 is a main control unit that stores the input display area and display magnification in the memory 21, and also stores the input display area and display magnification in the memory 21; An area determining unit 22 outputs instructions to the converting unit 20 and measurement instructions to the area determining unit 22 and the measuring unit 9. The area determining unit 22 determines whether the position specified by the trackball 10 is in the display area I or H. , extracts the corresponding display magnification from the memory 21, and notifies the measuring unit 9. 24 is a sub-control unit, which draws the position and area specified by the trackball IO in the frame memory 8 with a predetermined mark. The same reference numerals represent the same objects throughout the drawings.

It is assumed that the contents of the line buffer 4a are displayed in the display area I, the contents of the line buffer 4b are displayed in the display area H, and a display magnification of 1 is set in the memory 21 as an initial value.

In the ultrasonic diagnostic apparatus having the above configuration, the following display processing is performed.

(1) Ultrasonic waves are irradiated from the probe 1 to different parts.

(2) Ultrasonic image data of the region irradiated first is stored in the line buffer 4a, and ultrasound image data of the next region is stored in the line buffer 4b.

(3) The conversion unit 20 converts the coordinates of each ultrasound image data at predetermined intervals based on the display magnification (1 in this case) set in the memory 21 and stores the coordinates in the corresponding area of the frame memory 8. .

As a result, both the display areas I8 and 1 are displayed at a display magnification of 1, with the display area I displaying a still image and the display area H displaying a real-time moving image.

(4) Here, when enlarging the display magnification of the display area H to 2 times, specify and input the display area ■ and the display magnification 2 from the operation unit 7.

Thereby, the main controller 23 updates the magnification of the display area H set in the memory 21 from 1 to 2, and the converter 23 updates the magnification of the display area H set in the memory 21 from 1 to 2.
0 to change the magnification.

(5) The converting unit 20 refers to the memory 21, enlarges the contents of the line buffer 4b twice by the enlargement method described in FIG. 4, and stores and updates the enlarged data in the corresponding area of the buffer memory 8.

That is, the conversion unit 20 doubles the address corresponding to the depth 0-D/2 of each line of the line buffer 4b, converts the coordinates into a sector shape, and further converts the coordinates of the address corresponding to the depth 0-D/2 of each line of the line buffer 4b into a sector shape, and further converts the coordinates of the address corresponding to the depth 0-D/2 of each line of the line buffer 4b into a sector shape. The value obtained by adding the offset is set as the address of the frame memory 8, and the area corresponding to the display area (3) is masked to transfer the ultrasound image data.

Note that the scroll operation is valid in the display area where the cursor is located or in the area specified by a designated human input.

As described above, among the 2&lI ultrasound images displayed simultaneously, the ultrasound image in the display area H for which the instruction has been input can be enlarged twice and displayed.

Note that the display magnification can be set to about 2 to 4 times, and the display is scrolled horizontally, vertically, stepwise or continuously, but the converter 20 converts the display data at predetermined intervals, and the contents of the memory 21 are updated each time. , reads the scroll information, converts the ultrasound image data at predetermined positions in the line buffers 4a and 4b into display data, and transfers the display data to the frame memory 8.

Further, ultrasound images of the same region may be displayed in the display areas I and II, in which case only one line buffer is read out and developed in the frame memory 8 at each display magnification.

When measurement is performed on the screen displayed as above,
For example, when distance measurement is instructed by specifying a distance between two points with the trackball 10, the area determination unit 22 determines the display area in which the measurement point exists, extracts the corresponding display magnification from the memory 21, and extracts the corresponding display magnification from the memory 21. Notify.

Thereby, the measurement unit 9 detects the measurement point mark stored in the frame memory 8 by the sub-control unit 24, measures the distance between the two points using the address and display magnification, and stores the result in the memory 12. .

As a result, the display control unit 1.1 develops the contents of Memo January 2 into an identifiable character pattern and displays it in a predetermined area.

As described above, a plurality of ultrasound images can be displayed simultaneously by individually specifying the display magnification.

(Effects of the Invention) The present invention provides an ultrasonic diagnostic device that simultaneously displays multiple ultrasonic images at designated display magnifications, which facilitates comparison, improves operability, and has great effects in diagnosis. There is something.

[Brief explanation of the drawing]

FIG. 1 is a principle diagram of the present invention, FIG. 2 is a block diagram of an ultrasonic diagnostic apparatus according to an embodiment, FIG. 3 is a block diagram of a conventional ultrasonic diagnostic apparatus, and FIG. 4 is an enlarged explanatory diagram. In the figure, l is a searcher, 2 is a transmitter, 3 is a receiver, 4a, 4
b is a line buffer, 5.20 is a conversion unit, 6.23 is a main control unit, 7 is an operation unit, 8 is a frame memory, 9 is a measurement unit, 10 is a track pole, 1 is a display control unit, 12, 2
1 is a memory, 13 is a display section, 22 is an area determination section, and 24 is a sub-control section. Figure 1 of the map of the present invention

Claims (1)

[Claims] Multiple ultrasound images are displayed in different display areas (I,
II), a specifying means (30) for specifying a display magnification and the display area to be displayed at the display magnification; A conversion unit (20) for converting the ultrasound image data into display data at the designated display magnification is provided, and a plurality of ultrasound images displayed on the same screen are displayed at each designated display magnification. Features of ultrasonic diagnostic equipment.