JP2933393B2 - Medical diagnostic equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical diagnostic apparatus,
In particular, there are provided instruction means for specifying and instructing at least three point positions in the tomographic image displayed on the display monitor, and arithmetic means for calculating the angle between at least two straight lines connecting the respective point positions. The present invention relates to a medical diagnostic device.

[0002]

2. Description of the Related Art A medical diagnostic apparatus of this type, for example, displays a tomographic image of a crotch section of an infant on a display monitor, and determines a line segment coincident with, for example, a spinal cord or the like and an angle to be measured. By specifying a point position for specifying each line segment, an angle to be measured is automatically calculated by a calculation device, and the calculated value is displayed.

[0003] Therefore, it is possible to immediately determine whether or not the crotch joint is dislocated based on the calculated value.
The diagnostic efficiency can be improved.

The means for specifying and indicating a plurality of point positions on the display monitor is performed by a cursor moved on the display monitor.

[0005]

However, in a medical diagnostic apparatus having such a configuration, the angles of various points in a tomographic image are usually obtained simultaneously.

Therefore, in such a case, there is a problem that the number of point positions to be specified is large, and the desired angles cannot be calculated unless each of the point positions is specified and specified according to a predetermined order.

This is because the arithmetic processing is performed based on a vector operation. For example, one line segment is specified by specifying two point positions. Vectors with different directions will be specified. For this reason, if another line segment (also shown as a vector) is specified for the line segment represented by the vector, the diagonal to the angle to be measured may be calculated. .

For this reason, in order to simultaneously calculate a plurality of angles, the operator must accurately recognize and memorize the order of the point positions specified and specified.

Therefore, the present invention has been made in view of such circumstances, and an object of the present invention is to accurately measure an angle to be measured without imposing an excessive burden on an operator. It is an object of the present invention to provide a medical diagnostic device that is operated.

[0010]

In order to achieve the above object, the present invention basically provides an instruction for specifying and specifying at least three point positions in a tomographic image displayed on a display monitor. Means, and a medical diagnostic apparatus including a calculating means for calculating an angle between at least two straight lines connecting the respective point positions, wherein a part of a display monitor on which a tomographic image is displayed or the tomographic image is It is provided with a schematic diagram display means for switching to the tomographic image before being displayed and displaying a schematic diagram corresponding to the tomographic image, and the schematic diagram includes a determination order for determining a plurality of specified point positions. It is characterized in that a designated order indication is displayed.

[0011]

According to the medical diagnostic apparatus configured as described above, before the operator specifies a plurality of point positions in the tomographic image on the display monitor surface, the operator can use the same display monitor surface.
A schematic diagram corresponding to the tomographic image can be observed, and from this schematic diagram, the order of determining a plurality of specified point positions can be recognized.

Therefore, if a plurality of point positions are specified and specified in the tomographic image along the order shown in the schematic diagram, the angle to be measured can be accurately calculated.

Thus, the angle to be measured can be accurately calculated without imposing an excessive burden on the operator.

[0014]

FIG. 2 is a block diagram showing an ultrasonic diagnostic apparatus as an embodiment of the medical diagnostic apparatus according to the present invention.

In FIG. 1, there is an ultrasonic transmission / reception circuit 12, which drives the ultrasonic probe 11. The reflected echo from the ultrasonic probe 11 is received by the ultrasonic transmission / reception circuit 12, and the output is input to the digital image data conversion unit 13. The output from the digital image data conversion unit 13 is stored in the image memory 14 and is input to the TV signal generation circuit 6 via the RAM image processing data table 10. The output from the TV signal creation circuit 6 is output to a display unit 7 including a TV monitor.

The display section 7 is configured to display a tomographic image of the subject over the entire display surface.

For convenience of the following description, it is assumed that the ultrasonic tomographic image imaged on the display unit 7 is a tomographic image of the infant's crotch section.

On the other hand, there is a key switch 1, and a sequential command signal from the key switch 1 is inputted to the CPU 3 via the keyboard controller 2.

The CPU 13 can read the display control program from the ROM display control program 8 and creates a schematic diagram with the information stored in the RAM work 9. Data corresponding to this schematic diagram is transmitted via the graphic memory interface 4. And stored in the graphic memory 5.

The output from the graphic memory 5 is input to the TV signal generation circuit 6, and the display 7 displays the schematic diagram.

In this schematic diagram, a tomographic image is displayed on a part of the display surface where the entire area is displayed (for example, at the right corner of the display surface).

The display of the schematic diagram at a predetermined position with respect to the tomographic image is performed by exchanging signals between the RAM image processing data table 10 and the CPU 3.

Here, one embodiment of the schematic diagram is shown in FIG. The figure is a schematic drawing of a step image of a crotch section of an infant, similarly to the ultrasonic tomographic image displayed on the display unit 7, which is uniformly formed in itself. It is.

In the figure, reference numeral 20 indicates an iliac bone, reference numeral 21 indicates a femoral head, and reference numeral 22 indicates a joint capsule.

In the figure, an initial input reference point A, a second input reference point B, a third input reference point C, a fourth input reference point D, and a fifth input reference point E are shown. ing. When each of these reference points is specified in the order described above, the angle α and the angle β of the position shown in the figure are calculated by vector calculation.

FIG. 1 is an explanatory diagram showing one embodiment of a flowchart of a display program in the ROM display control program 8.

In the figure, when the start key is pressed, a schematic diagram (hereinafter, referred to as a schema) is displayed on the display unit 7. The schema display in this case is, as described above,
The tomographic image is formed on a part of the displayed screen.
The start key is a key on the key switch 1 and is a key for starting angle measurement (step 1).

Next, an initial input reference point A is displayed on the schema. This initial input guideline A
Is displayed as the first guide point among the guide points sequentially displayed thereafter. The initial input reference point A may be displayed simultaneously with the schema display in step 1 (step 2).

The operator recognizes the initial input standard point A displayed on the schema and moves the cursor to a position corresponding to the initial input standard point A on the screen displaying the tomographic image (step 3).

At this time, the CPU 3 determines whether or not the cursor is moving (determination of a moving key).

Next, the operator confirms that the cursor has been matched with the position corresponding to the initial input reference point A on the screen displaying the tomographic image, and presses the registration key. As a result, the CPU 3 recognizes and stores the position information of the position corresponding to the initial input reference point in the tomographic image (step 4).

At this time, the CPU 3 determines whether or not the registration key is pressed (determination of the registration key) and whether or not the number of inputs has reached the MAX value (input). Judgment of point ≦ MAX). Here, the MAX value is a number corresponding to the number from the reference point A to the reference point E in FIG. 3, and this number is specified in advance by the key switch 1 or the like.

Then, in the schema, the input reference point A
Will be updated. In this case, the initial input guide point A displayed in step 2 is continuously displayed, and the second input guide point B is displayed (step 5).

Thereafter, the operator repeats the above-described steps.

In this manner, the CPU 3 recognizes and stores the position information of the position corresponding to the second input reference point B in the tomographic image.

At this time, since two point positions are specified, a line segment connecting those points is displayed in the schema. This line segment display is not always required (step 6).

Hereinafter, the third and subsequent input reference points C, D,.
Is performed in the same manner, and the input reference point is MAX.
When the value is equal to the MAX value, the CPU 3 performs angle calculation processing, and the calculated values α and β are displayed on the schema (step 7).

As described above, according to this embodiment,
Before the operator instructs to specify a plurality of reference points in the tomographic image on the surface of the display unit 7, the operator uses the same display unit 7.
In the plane, the schema corresponding to the tomographic image can be observed, and from this schema, the order of determining the plurality of specified point positions can be recognized.

Therefore, if a plurality of reference points are specified and specified in the tomographic image along the order specified by the schema, the angle to be measured can be accurately calculated.

Thus, the angle to be measured can be accurately calculated without imposing an excessive burden on the operator.

In the above-described embodiment, the angle display in the tomographic image of the infant's crotch section is used as an example, but it goes without saying that the present invention is not limited to such a tomographic image.

In the above-described embodiment, the schematic diagram in which the order for determining a plurality of specified point positions is indicated is displayed on a part of a display monitor on which a tomographic image is displayed. However, the present invention is not limited to this. For example, the tomographic image may be switched and displayed before the tomographic image is displayed again.

That is, when it is desired to obtain the angle of a certain part from the tomographic image displayed on the display monitor, the schematic diagram corresponding to the tomographic image is switched to the tomographic image by instructing the instruction, and is displayed on the entire display monitor. Make it be imaged. Then, after recognizing the order of determining the plurality of specified point positions from the schematic diagram, the operator switches the schematic diagram to the tomographic image, and sequentially positions point positions based on the order on the tomographic image plane. Instructions are specified.

In the above-described embodiment, means for specifying and instructing a plurality of point positions on the display monitor is performed by a cursor moved on the display monitor. However, the present invention is not limited to this, and it goes without saying that means for specifying a point position using a so-called light pen may be used.

In the above-described embodiment, the ultrasonic diagnostic apparatus has been described. However, the present invention is not necessarily limited to the ultrasonic diagnostic apparatus. Other medical diagnostic apparatuses such as magnetic resonance imaging may be used. Needless to say.

[0046]

As is apparent from the above description,
According to the medical diagnostic apparatus of the present invention, the angle to be measured can be accurately calculated without imposing an excessive burden on the operator.

[Brief description of the drawings]

FIG. 1 is an operation flowchart showing one embodiment of a medical diagnostic apparatus according to the present invention.

FIG. 2 is a schematic block diagram showing one embodiment of a medical diagnostic apparatus according to the present invention.

FIG. 3 is an explanatory diagram showing one embodiment of a schematic diagram used in the medical diagnostic apparatus according to the present invention.

[Explanation of symbols]

 4 Graphic memory interface 5 Graphic memory 8 ROM display control program 9 RAM work

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) A61B 8/00-8/15 A61B ^6/ 00-6/14

Claims (1)

(57) [Claims] 1. An instructing means for identifying and instructing at least three point positions in a tomographic image displayed on a display monitor, and an operation for calculating an angle between at least two straight lines connecting said point positions. In the medical diagnostic apparatus including the means, a schematic diagram corresponding to the tomographic image is displayed on a part of the display monitor on which the tomographic image is displayed, or by switching to the tomographic image before the tomographic image is displayed again. A medical diagnostic apparatus comprising a schematic diagram display means, wherein the schematic diagram is provided with an order indication display for indicating a determination order for determining a plurality of specified point positions.