JPH11113901A - Ultrasonograph - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform a diagnosis of the growing status of a fetus by a method wherein in a somatometry of a fetus by an ultrasonograph, a standard growing state based on the measured result is visually displayed. SOLUTION: On the screen of a display 14 where a tomogram 22 is displayed, a first measuring capiler 23 is moved to the start point of a region to be measured, and then, a second measuring caliper 24 is moved to the end point of the region to be measured, and a distance between the first measuring capiler 23 and the second measuring caliper 24 is measured. In the meantime, on a line connecting the first measuring caliper 23 and the second measuring caliper 24, markers (a 5% marker 25, a 50% marker 26, a 95% marker 27) to indicate standard growing values are displayed while being superposed with the tomogram 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for scanning a tomographic plane by transmitting and receiving ultrasonic waves from a probe to a subject, and displaying a tomographic image obtained by the scanning as a two-dimensional image on a display device. The present invention relates to an ultrasonic diagnostic apparatus, and more particularly, to an ultrasonic diagnostic apparatus that can be easily compared with a standard value in physique measurement of a subject based on a tomographic image.

[0002]

2. Description of the Related Art Conventionally, there has been known an ultrasonic diagnostic apparatus having a function of measuring the fetal head large lateral diameter (BPD) or the like based on a tomographic image. In some ultrasonic diagnostic apparatuses, a data table indicating the standard growth value of the fetus is stored in advance, and the standard growth value according to the number of gestational weeks can be displayed as a numerical value together with the actual measurement value.

[0003]

However, in the conventional ultrasonic diagnostic apparatus, since the standard growth value is displayed as a numerical value, the actual fetal physique and the standard growth state are visually determined. In comparison, the development status could not be diagnosed.

[0004] When measuring the fetal head's large lateral diameter (BPD) or the like, a caliper for indicating a measurement start position and a measurement end position is superimposed on a tomographic image displayed on a display device. Display and move the caliper on the screen to specify the measurement position, but there was no index for setting the measurement position, so the caliper was set to an inappropriate part, which caused Incorrect measurement,
Eventually, there was a possibility that the development status would be erroneously diagnosed.

Accordingly, the present invention has been made to address such a problem, and allows the comparison between the physique of a subject and a standard value to be performed visually.
It is another object of the present invention to provide an ultrasonic diagnostic apparatus capable of easily setting an accurate position of a caliper for physique measurement.

[0006]

In order to achieve the above-mentioned object, an ultrasonic diagnostic apparatus according to the present invention transmits and receives ultrasonic waves from a probe to a subject, scans a tomographic plane, and performs the scanning. An ultrasonic diagnostic apparatus that displays the obtained tomographic image as a two-dimensional image on a display device, the ultrasonic diagnostic apparatus having a function of measuring the physique of the subject based on the tomographic image. During the measurement, a scale indicating a standard value of the physique is displayed so as to be superimposed on the tomographic image.

[0007]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing an ultrasonic diagnostic apparatus according to the present invention. This ultrasonic diagnostic apparatus transmits and receives ultrasonic waves from a probe to a subject, scans a tomographic plane in a fan shape, and displays a tomographic image obtained by the scanning on a display device as a two-dimensional image. is there.

In FIG. 1, an ultrasonic diagnostic apparatus includes a probe 11 for transmitting and receiving ultrasonic waves to and from a subject, a transmitting and receiving unit 12 for transmitting and receiving signals to and from the probe 11, and a transmitting and receiving unit. An image processing unit 13 for converting a reflected echo signal obtained through the display unit 12 into a display signal; a display device 14 for displaying a tomographic image based on the display signal; a control unit 15 for controlling the operation of each unit of the device; And a console 17 including a trackball, function keys, and the like.

The storage device 16 stores in advance a standard value in the measurement of the physique of a fetus as a subject in a format readable by the control section 15. In the present embodiment, data of the fetal head of the fetus (BP) is used as the standard value data.
A data table (hereinafter, referred to as “standard growth table”) for evaluating the growth state of the fetus from the measurement result of D) is stored.

[0010] As shown in Fig. 2, the standard growth table shows the magnitude of the large lateral diameter (BPD) at 5%, 50% (mean) and 95% for each gestational age according to percentile ranking. The normal range is within the range of 5% to 95% (Reference: Norio Shinozuka et al. "Creation of reference values in ultrasonic fetal measurement" Jpn Med Ultrasonics 1996 Vol.23). However, FIG.
The example shown in FIG. 2 shows an example of a standard growth table of the fetal head large lateral diameter (BPD).
However, the size in the normal range may be indicated by a standard deviation instead of the percentile ranking.

Further, the measurement target site is not limited to the fetal head wide lateral diameter (BPD).
The length of the femur, the length of the humerus, the circumference of the waist, and the like may be measured. In this case, a standard growth table (standard value) corresponding to each measurement site is stored in the storage device 16 in advance. Just remember it.

FIG. 3 shows a display example of a screen at the time of measuring the size of a fetus in the ultrasonic diagnostic apparatus according to the present invention.

A tomographic image 22 is displayed on the screen of the display device 14, and the operator previously inputs a reference number of weeks of pregnancy via the console 17. Then, the first measurement caliper 23 (cross marker shown in FIG. 3) displayed on the tomographic image 22 is set to the starting point of the part to be measured from the initial position (for example, the center of the screen) by operating the trackball or the like by the operator. To the end of the part to be measured.
When the measurement caliper 24 (cross marker shown in FIG. 3) is moved and fixed, the distance between the first measurement caliper 23 and the second measurement caliper 24 is set as the distance of the measurement site, and the distance is determined by image processing. Measured.

During the caliper operation, the control unit 15
Are 5%, 50%, 95% of the entered gestational weeks
Is retrieved from the standard growth table (see FIG. 2) stored in the storage device 16. Then, the first measurement caliper 23 and the second measurement caliper 2
5% marker 25, 50% at the position corresponding to 5%, 50%, 95% fetal head large lateral diameter (BPD) on the line connecting 4
The marker 26 and the 95% marker 27 are displayed so as to be superimposed on the tomographic image 22, respectively. That is, on the line connecting the first measurement caliper 23 and the second measurement caliper 24, 5%, 50%, 9%
Scale (scale) indicating 5% fetal large lateral diameter (BPD)
Are displayed on the tomographic image 22 of the fetus.

The 5% marker 25, 50% marker 26,
The 95% marker 27 is not displayed only after the position of the second measurement caliper 24 is determined, but is determined after the position of the first measurement caliper 23 is determined and the position of the second measurement caliper 24 is determined. Before the measurement, it may be displayed on a line connecting the first measurement caliper 23 and the second measurement caliper 24 during the moving operation.

According to the above configuration, the size in the standard growth state is displayed as a scale superimposed on the tomographic image 22 of the fetus, so that it is possible to visually judge the growth state of the fetus and the standard growth state. In addition, the development state can be easily diagnosed.

Further, if the markers 25 to 27 are displayed before the position of the second measurement caliper 24 is determined, this serves as a guide when the position of the second measurement caliper 24 is moved. The operation of moving the measurement caliper 24 is facilitated, errors in the set position of the second measurement caliper 24 can be suppressed, and the presence or absence of an abnormality can be diagnosed before the position of the second measurement caliper 24 is determined.

The shapes of the markers 25 to 27 are not limited to those shown in FIG. 3, but may be, for example, 5%, 50%, 95%
May be displayed as a marker as it is. Further, the markers 25 to 27 may be displayed in different colors, or may be displayed in a normal range (5% to 95%).
The range lines may be color-coded to make them easier to see.

In the above-described embodiment, an example is shown in which the fetal head's large lateral diameter (BPD) is measured by measuring the distance between two points. It is also possible to apply, for example, an ellipse indicating a standard value may be displayed as a scale concentrically with the ellipse for which the perimeter is measured.

If the scale is unnecessary for diagnosis, the scale may not be displayed.

[0021]

The present invention has been configured as described above.
By displaying the scale indicating the standard value on the tomographic image in the physique measurement, the actual physique can be visually compared with the standard value, and the physique can be easily diagnosed.
In addition, the scale can be used as an index when setting the position at which the physique measurement is performed, thereby suppressing the occurrence of a setting error of the measurement position.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a system configuration of an ultrasonic diagnostic apparatus according to the present invention.

FIG. 2 shows an example of a standard value of a physique, a large lateral diameter of a fetal head (B).
FIG. 6 is a diagram illustrating a data table indicating a PD) by a percentile ranking.

FIG. 3 is a diagram showing an example of a screen display when a physique is measured by the ultrasonic diagnostic apparatus according to the present invention.

[Explanation of symbols]

 Reference Signs List 11 probe 12 transmission / reception unit 13 image processing unit 14 display device 15 control unit 16 storage device 17 console 22 tomographic image 23 first measurement caliper 24 second measurement caliper 25 5% marker 26 50% marker 27 95% marker

Claims (1)

[Claims] An ultrasonic diagnostic apparatus that transmits and receives ultrasonic waves from a probe to a subject, scans a tomographic plane, and displays a tomographic image obtained by the scanning as a two-dimensional image on a display device. An ultrasonic diagnostic apparatus having a function of measuring the physique of the subject based on the tomographic image, wherein a scale indicating a standard value of the physique is displayed on the tomographic image while the physique of the subject is being measured. An ultrasonic diagnostic apparatus comprising: