JPS6131138A - Ultrasonic diagnostic 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] [Technical Field of the Invention] The present invention provides an ultrasonic diagnosis l! which performs three-dimensional display. This relates to the i-device.

1. Technical Background of the Invention and the Same Subject J The three-dimensional display that is popular in conventional ultrasonic diagnostic equipment will be explained with reference to FIGS. 3 to 5.

As shown in FIG. 3, the transducers 1 are arranged in an array, electron scanning is performed in the X direction, and the probe 2 is moved in the X direction (mechanical scan) to perform a mechanical scan as shown in FIG. After obtaining a plurality of fan-shaped images 3 and storing them in a storage means (memory) for each image, the desired coordinates are read out from each image and processed by a computer. A partial three-dimensional image as shown in FIG. 5 was displayed on the television's upper opening 4.

However, in order to obtain the three-dimensional image of J and Una shown in No. 5, all the f-data must be stored in multiple media, which means that unnecessary data is also being handled. 1 waste of memory space? (It has the disadvantage of being costly with <, and J.

In addition, since desired data is read out from a plurality of images and a three-dimensional image (three-dimensional 1llI image) is created, processing takes time, making it difficult to display in real time.

[Objective of the Invention 1 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an ultrasonic tomographic image that can save memory and display a two-dimensional image in real time.

[11lt Key Point 1 of the Invention The configuration of the present invention for achieving the above-mentioned object uses a probe in which ultrasonic transducers are arranged in an array to detect
Obtain an ultrasound tomographic image in the direction of the array arrangement, and move the probe in a direction that crosses the direction of the array arrangement. In an apparatus that obtains a plurality of ultrasonic images by using a plurality of ultrasonic images, selects an arbitrary area, and displays a three-dimensional image, a desired three-dimensional image is created from data constituting the plurality of ultrasonic tomographic images. A storage means for selecting and storing data in a necessary portion only, a write control means for controlling old data to the storage means, and an input device capable of selectively controlling the write-in command of the write control means. It is characterized by the fact that it has been set up.

[Embodiments of the invention] The present invention will be specifically explained below using Examples.

FIG. 1 is a block diagram of one embodiment of the present invention.

In the figure, 5 and 6 send ultrahigh wave signals to the probe 2,
A transmitting section and a receiving section that receive data, and 7 a Δ/D converter (ADC) that digitizes the analog signal from the receiving section.
The output signal from the Al1) converter 7 is sent to the room memory 9 via the buffer circuit 8 and is stored therein. D/A converter (I)A through 10
C) It is converted to an analog signal (A number) at 11, and then converted to a video signal at the Hideoiha number converter 12, and then converted to a television signal.
The image is displayed on a monitor (TV) 4.

Reference numeral 13 denotes a write control unit for controlling the writing position when writing γ-data to the frame memory 9; This is a main control section that controls the operations of the transmitting and receiving section 56, the buffer circuits 8 and 10, and the write control section 13. An external input device 20 is connected to the main control section 14, and an operator can give commands for the operation of each circuit by operating a keyboard or the like. In particular, for the write control unit 13, select an arbitrary address in the urchin frame memory 9 and specify the coordinates, and
A selection such as writing any data sent to ti11
11 commands can be executed.

The operation of Hlif having the above configuration will be explained with reference to the time chart in FIG. 2 and the ultrasonic image in FIG. 4.

In this operation explanation, for example, a plurality of sheets of 811 shown in FIG.
a, b, c, d, e, f, g of the wave image.

A case will be described in which a three-dimensional image as shown in FIG. 5 is obtained by cutting along the line connecting h, that is, as shown in FIG.

First, the operator uses the input device E20 to instruct the user to display the first ultrasonic image of the area to which the bulbs 1+--b are applied. As a result, a single tomographic image is displayed on the television screen 94, so if you want to observe it and determine that it contains the area of interest, you can select the ultrasound image starting from that area. X.

Specify the coordinates in the yl) direction, and also specify the data position in the required range of the ultrasonic image in the Vjj direction when moving B [1-B by mechanical scanning.For example, In the figure (multiple ultrasound images α,
In the case of β, γ, δ..., if you only need the data in the range between a-i and b-c within the range from α-1 to α-j, please indicate that. Similarly, instructions are given sequentially to select data on the line connecting hc-k with respect to the image of the plane related to β. At this time, it is only necessary to select data that appears on the surface of the three-dimensional image shown in Figure 5, which should be obtained as a result.
As for the necessary data in each ultrasound image, the selected nodes are large and small. That is, the images of the 0-plane each contain data over a relatively wide range, but after the β-plane, most of the data are narrow data related to intersection points. Therefore, regarding the data selection timing on each surface, for the wide area, the ultrasonic echo is received and written with normal energization,
For narrow areas, it is possible to receive and write J-Ko Buddha at a faster speed.

Such echo reception speed control and illumination 7/
Speed control can also be specified using the input device 20.

FIG. 2 shows the timing of such control. The interval of the received repeated pulses 15 is controlled, and accordingly, the receiver]-16 is received and the writing range 17 is
Regarding this, selective writing 18 of a wide range of data is performed in a wide interval part, and selective writing 19 of a small range of data is performed in a narrow part.

In this way, only the data necessary to create a three-dimensional image as shown in FIG. 5 is selected and displayed for diagnosis.

[Effects of the invention in Song Dynasty] According to the present invention detailed above, only the data necessary to obtain a three-dimensional image corresponding to the purpose of diagnosis is extracted, and other parts of data are not selected. A single is sufficient, and since the writing speed is changed according to the amount of extracted data, the speed can be increased, and an ultra-wave diagnostic device capable of real-time display can be provided.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a time chart for explaining the operation, Fig. 3 is a schematic perspective view showing the configuration of the ultra-F1 wave probe, and Fig. 4 is for obtaining a three-dimensional image. FIG. 5, which is an explanatory diagram of the principle, is a diagram of a display mode of a three-dimensional image. 2... Probe, 4... Television monitor, 6...
...Receiving section, 9...Storage means, 13...Writing control section, 14...Main control section,
20... Input device. Agent: Patent attorney Kensuke Norichika (and 1 other person) Figure 3 Figure 4

Claims (1)

[Claims] Using a probe in which ultrasound transducers are arranged in an array, an ultrasound tomographic image of the subject is obtained in the array arrangement direction, and a plurality of ultrasound images are obtained by moving the probe in a direction intersecting the array arrangement direction. In a device that displays a three-dimensional image by selecting an arbitrary region, only the data of the portion necessary to create a desired three-dimensional image is selected from among the data constituting the plurality of ultrasonic tomographic images. a storage means for storing data, a write control means for controlling writing to the storage means;
An ultrasonic diagnostic apparatus comprising: an input device capable of selectively controlling a write command of the write control means.