JPS5951842A - Two-cross area image display system - 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 a. Technical Field of the Invention The present invention relates to an ultrasonic diagnostic apparatus that displays signals of cross-sectional images obtained by a number of ultrasonic probes on the screen of a display device.

b. Background of the technology In an ultrasonic diagnostic device that displays a cross-sectional image on the screen of a display device, two ultrasonic gloves are installed, and the image signals of the +Ajj plane image obtained from these ultrasonic gloves are combined to produce a cross-sectional image. The image is displayed over a wide area on the screen of the display device.

C. Prior Art and Problems/Points As a conventional example, an ultrasonic diagnostic apparatus equipped with two ultrasonic gloves is shown.

FIG. 1 shows an ultrasonic diagnostic device equipped with two ultrasonic gloves, 1 and 2 are ultrasonic probes (hereinafter referred to as probes), 3.4 are orthogonal coordinate converters (hereinafter referred to as converters), 5
denotes an ultrasonic glove relative position detector (hereinafter referred to as a detector), 6.7 a memory, and 8 a display device.

Figure 2 is a diagram explaining the cross-sectional images obtained by probes 1 and 2, shown in polar coordinates. Figure 3 is a diagram explaining the cross-sectional images obtained by probes 1 and 2, shown in X-Y orthogonal coordinates. Figure 1.

In the image signal of the cross-sectional image obtained from the globes 1 and 2, the positional information of each pixel is indicated by the regular l@ coordinates in FIG. 2 with the tips of the globes 1 and 2 as the origin.

The cross-sectional image at 2 in FIG. 2 is symmetrical with respect to L as the center. Now, the positional information of the point A of the child in the cross-sectional image is indicated by (θ1.!,) with L as the reference. K, which displays the image signals obtained from the screens 1 and 2 as a cross-sectional image on the screen of the display furnace f8, converts the position information indicated in polar coordinates by the converters 3 and 4 to X-Y il! : Exchange W! Convert to location information indicated by a marker. When converting, as shown in Figure 3, for the cross-sectional image obtained from the cross-section, the tip of the cross-section is taken as the origin of the X-YNM constellation 4, and the cross-sectional image The position information is converted so that it is symmetrical about the center. Therefore, the position information indicated by the polar coordinates of A(θr, l+) is converted as follows. Next, the image signals obtained from the globe 2 are detected by the detector 5. 2
Convert based on the relative position ft. Now, as shown in Figure 3, the tip of glove 2 is at the tip of X when the tip of probe 1 is the origin.
, the cross-sectional image obtained from the globe 2 is at the point Y-coordinate (a, b), and the angle is θ with respect to the Y-axis. It's leaning. Therefore, the positional information of an arbitrary point B (θ2.&) indicated by polar coordinates in the cross-sectional image obtained from the glove 2 is converted as follows. Furthermore, θ. The clockwise rotation is negative and the counterclockwise rotation is positive. The image signals obtained from the globe 1.2 whose position information has been converted are respectively stored in memories 6.7 given the same address. At this time, the image signal is stored at an address corresponding to one positional information. The image signals stored at the same address in the memory 6.7 are read out from the memory 6.7 at the same timing. Then, the read image signals are combined and a cross-sectional image is displayed on the screen of the display device 8. In addition, when displaying, the Y axis of the X-Y orthogonal coordinates,
The axes are displayed parallel to the vertical and horizontal frames of the screen of the display device 8, respectively. Also, the origin of the X-Y orthogonal coordinates and the cross-sectional image are EU
It is fixedly located at the top end of the I# rotation so that it fits in the plane.

In such a conventional ultrasonic diagnostic apparatus, the display position on the screen of the cross-sectional image taken by the probe l is fixedly rectangular. Gloves 1. 2 A sieve j rank ju
Yoji Glove 2 Yo υi: Glove l at 0, which will move the display position on the screen of the cross-section acupuncture needle being rubbed.
With the relative position of Glove 2, if you try to display a cross-sectional image of Glove 2 on the screen, it may end up extending beyond the top of the screen. In addition, the cross-sectional image taken by the probe l is placed at an extreme position, making it difficult for the diagnostician to see.

d.Purpose of the Invention Therefore, the present invention uses image signals obtained from two gloves to find the center of a synthesized cross-sectional image displayed on the screen using a winding algorithm, and calculates the center on the screen of the display device. A wide range of cross-sectional images combined with two centered images,
This is intended to be displayed in a way that is easy for the diagnostician to see.

e) detecting the relative positions of two arbitrarily movable sonic probes with respect to the object to be diagnosed with mushroom growth; Based on the relative position, the image signal of
;? In an ultrasonic diagnostic device that displays the synthesized image No. 43 on the screen of the device, an appropriate algorithm is used to find the center of the cross-sectional image shown on the screen of the display device using the synthesized image No. 1. The cross-sectional image is displayed with the cross-sectional image aligned with the center on the screen of the display device.

Embodiment This embodiment shows an ultrasonic diagnostic apparatus equipped with two ultrasonic probes.

FIG. 4 shows the ultrasonic diagnostic tar device used in this example, 1 and 2 are ultrasonic probes, (hereinafter referred to as gloves) 6 and 7 are memories, 8 is a display device, and 9°10σ orthogonal 11 is an ultrasonic globe relative position detector (hereinafter referred to as a detector), 12.13
is a memory write controller (hereinafter referred to as controller), 14
indicates a center of gravity computing unit (hereinafter referred to as computing unit). Figure 5 shows
FIG. 2 is a diagram illustrating a cross-sectional image obtained by the probe 1.2, in which position information is shown in polar coordinates, converted into X-Y orthogonal coordinates. In the present embodiment, the appropriate algorithm is an algorithm for determining the center of gravity of the synthesized cross-sectional view.

Image signal of cross-sectional image obtained from globe 1 and 2
, the positional information of each pixel is shown in polar coordinates with the tips of probes 1 and 2 as the origin. Globe 112
The image signals to be displayed are displayed on the image i of the display device 8. Based on the relative positions of the gloves 1 and 2 detected by the detector 11, the converters 9 and 10 convert them into polar coordinates. The location information is converted into the location information indicated by X'rr. Conversion Removal 5 As shown in Figure 1, probe 1.
2. Connect the tips of each with a straight line, and make that straight line the X axis.

In addition, the tip of the glove 1 is set as the origin. Looking at the cross-sectional image obtained from glove 1 in Fig. 5, θ with respect to the X axis. ′
It's leaning. Therefore, position information (0m-1m) of an arbitrary point C within the cross section N obtained from the glove 1 indicated in polar coordinates.
is converted into position information of X-Y@cross coordinates. Looking at the cross-sectional image obtained from P4-2 in Fig. 5, we can see that θ
. 'l It's leaning. Also, the tip of the probe 2 (e, O)
There is K. Therefore, the position information (θ
i, A't)Fi, is converted into position information of X-Y orthogonal coordinates.

Furthermore, θ. I, θ. ′ is negative for clockwise rotation and positive for counterclockwise rotation.

The image signals obtained from the globes 1 and 2 whose position information has been converted are stored in the memory 6.7 given the same address. Prior to storage, the center of gravity of the combined cross-sectional image is determined by the calculator 11 based on the relative positions of the probes 1 and 2 by the detector 5.

FIG. 2 shows the sector-shaped cross-section obtained by both probes 11. In each case, the center of gravity G is at the origin 0.
Katana) is in Zl on L. If this position information of G is expressed in polar coordinates, it becomes (0+ 3 b ). This G (1),
1. t) When converted into equation 5, the position information of the imaginary center G, , Gt of the cross-sectional image obtained from the probe L 2 at the outer X-Y axis x 1 x i group is obtained as shown in the fifth equation. Then, the position information of the center of gravity G of the 1-analysis surface image obtained by combining 1 cross-section image obtained from 1.2 is given by G1.
゜G2 is found as the midpoint of the old straight line. Here, the sizes of the cross-sectional images scanned by probe ] and 2 are equal. Note 1. In the case of E, store the positional information of the center of gravity G0 obtained in this way in g, and store it in the memory 6.7 corresponding to the center on the screen.
The controllers 12 and 13 are controlled to store the image signal having the position information of the center of gravity Go at the address of . The signals recorded and written at the same address in the memory 6 and 7 are read out from the memory 6 and 7 at the same timing. The read out image signals are combined and a cross-sectional image is displayed on the screen of the display device 8. Father, when it comes to display,
The X-axis and Y-axis of the X-Y orthogonal mark are displayed parallel to the vertical and horizontal frames of the screen of the display device 8, respectively.

In this embodiment, ul and the appropriate algorithm are used as an algorithm to find the center of gravity, but the algorithm may be changed depending on the change in the weighting of the diagnostic position 1@, and the center found thereby may be used.

In addition, in this embodiment, the ultrasonic diagnostic apparatus equipped with two or more ultrasonic globes is also applicable to the same embodiment or the present invention. In the embodiment, by storing an image signal having the position information of the center of gravity at the memory address corresponding to the center of the screen, by reading out the image signal stored in the memory, the center of gravity of the synthesized cross-sectional image can be determined. The cross-sectional image was displayed so that the center on the screen of the display device was aligned, but when reading the image information from the memory without following the steps similar to the memory arch, the image with the position information of the center of gravity was The signal may be displayed at the center of the display screen.

g Effects of the Invention According to the present invention, the WIrWJ image can be displayed so as to fit on the screen of the display device, and the cross-sectional image is spread out in the center of the screen of the display device, making it very easy for the diagnostician to see.

[Brief explanation of the drawing]

Fig. 1 shows a conventional example of an ultrasonic diagnostic apparatus equipped with two ultrasonic probes, 1 and 2 are ultrasonic probes, 3.4 is an orthogonal coordinate converter, 5 is an ultrasonic probe relative position detector, and 6 is an ultrasonic probe. ，
7 is a memory, and 8 is a display device. FIG. 2 is a diagram illustrating a cross-sectional image obtained by the ultrasonic glove 1.2 in polar coordinates and explaining its features. 3rd South is a diagram illustrating the positional information of the 1-fraction image displayed on the ultrasonic diagnostic apparatus of FIG. 1 converted from polar coordinates to X-Y@cross coordinates. FIG. 4 shows an embodiment of the ultrasonic diagnostic apparatus used in the present invention, in which 1.2 is an ultrasonic probe, 6 and 7 are memories, 8 is a display device, and 9.1
0 is an orthogonal coordinate converter, 11 is an ultrasonic globe relative position detector, 12 and 13 are memory write controllers, and 14 digits are W-center calculations. FIG. 5 is a diagram illustrating the positional information 1- of the cross-sectional image in the ultrasonic diagnostic apparatus of FIG. 4 converted from polar coordinates to XY orthogonal coordinates. L Arithmetic 21!1)' Itake mushroom 3 Diagram

Claims (1)

[Claims] Detecting the relative positions of a plurality of ultrasound probes that are arbitrarily movable with respect to the diagnostic object, and transmitting image signals of a plurality of cross-sectional images of the diagnostic object obtained from the plurality of ultrasound gloves to the relative positions. In an ultrasonic diagnostic apparatus that synthesizes image signals based on the synthesized image signals and displays the synthesized image signals on the screen of a display device, an appropriate algorithm is used to generate a cross-section displayed on the screen of the display device based on the synthesized image signals. An ultrasonic diagnostic apparatus characterized by determining the center of an image and displaying the synthesized image signal by aligning the center with the center on the screen of the display device.