JP2006247206A - Ultrasonic diagnostic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide ultrasonic diagnostic equipment with displaying function which enables the evaluation of a temporal change in the growth of fetus easily based on the ultrasonic images. <P>SOLUTION: The ultrasonic diagnostic equipment calculates the body of fetus on the ultrasonic image based on the ultrasonic image acquired by using the ultrasonic probe 1 and displays the relation between the standard value and the calculated value for the part of body of the fetus of the gestational age. The ultrasonic diagnostic equipment provides the first graphing means 17 which makes a statistical average value graph and deviation graph for the measured part of body by plotting the calculated values of a part of fetus on the pre-determined gestational age with the gestational age along a horizontal axis and the calculated value along a longitudinal axis, as well as the first graph displayed in a graph, the second graphing means 18 which makes the second graph representing the difference between the calculated value and the statistic average value for the measured part as a deviation with the gestational age along a horizontal axis and the standard deviation along a longitudinal axis, and the displaying means 6 to display the first graph and the second graph on the same display. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an ultrasound diagnostic apparatus which is applied to a test or diagnosis (hereinafter referred to as “examination”) of a pregnant woman in obstetrics and gynecology and has a display function for fetal growth diagnosis.

  In many cases, an ultrasound diagnostic apparatus used for screening in obstetrics and gynecology measures the length of the representative part of the physique from the ultrasonic tomogram of the fetus, and from this, diagnoses normal / abnormality of fetal development Featuring a fetal growth diagnosis function. The representative sites include fetal head heel length (hereinafter abbreviated as CRL), head maximum lateral diameter (hereinafter abbreviated as BPD), femur length (hereinafter abbreviated as FL), and the like.

  There are several methods for fetal growth diagnosis. For example, in the ultrasonic diagnostic apparatus described in Patent Document 1, as shown in FIG. 8, a measured value (x mark) of a designated part of a fetus is statistically averaged. The growth curve graph of the value is displayed at the same time, and the fetal growth is evaluated by comparing the two. FIG. 8A is a CRL graph showing curves of 10% tile, 50% tile, and 90% tile. FIG. 8 (b) is a graph of BPD, which shows a mean value and a curve of ± 1.5 SD.

  Moreover, in the ultrasonic diagnostic apparatus described in Patent Document 2, a fetal growth status display screen as shown in FIG. 9 is shown. The standard deviation obtained from the statistical values and the deviations of the measurement results of a plurality of parts obtained by the screening are displayed on the graph at the same time, so that fetal growth can be evaluated effectively. In the example of FIG. 9, CRL, BPD, and FL are simultaneously displayed as a graph.

In this graph, 14 is the number of gestational weeks of the fetus, and 15 is a deviation rate axis for three representative sites of CRL, BPD, and FL. Reference numeral 16 denotes an origin line passing through the origin of the deviation rate axis 15. Two broken lines 17 indicate the upper and lower limits of the normal range. 18 is a plot display of the deviation rate based on the measurement result. The measured value 20 of each representative part is displayed numerically. 21 is the deviation rate of the measured value of the representative part. According to this ultrasonic diagnostic apparatus, the values of the deviation rates of the lengths of a plurality of types of representative sites are plotted on the respective deviation rate axes of the same scale and the origins aligned, and the normal range Since the upper and lower limits are indicated by two straight lines, it is easy to determine whether the fetal growth state is normal or abnormal.
Japanese Patent No. 3295631 Japanese Patent No. 3204722

  However, in the conventional ultrasonic diagnostic apparatus, since the statistical average value is not a linear graph in the method shown in FIG. 8, the difference between the statistical average of growth and the measurement value obtained by the screening is There is a problem that it is difficult to capture temporal changes. Further, even with the method as shown in FIG. 9, although the difference between the statistical average for each measurement site and the measured value obtained by the screening is clearly understood, there is still a problem that it is difficult to capture the temporal change of the growth.

  The present invention has been made to solve the conventional problems, and an ultrasonic diagnostic apparatus having a display function that makes it possible to easily evaluate temporal changes in fetal development based on ultrasonic images. The purpose is to provide.

  The ultrasonic diagnostic apparatus of the present invention measures the physique of a fetus on the ultrasonic image based on an ultrasonic image obtained using an ultrasonic probe, and is a standard for the number of gestation weeks of the fetus at the measurement site. An ultrasonic diagnostic apparatus configured to display a relationship between a measured value and a measured value, wherein the horizontal axis is the number of weeks of pregnancy and the vertical axis is the measured value, and the measurement result of an arbitrary part of the fetus is determined in advance A first graph creating means for plotting at a week number position and creating a first graph displayed in one graph together with a graph of a statistical average value of a measured part and a graph of a deviation; The second graph creating means for creating a second graph in which the difference between the measurement result and the statistical average value of the part is expressed as a deviation and plotted, with the number of weeks and the vertical axis as the standard deviation, and the first graph and the first graph Display means for displaying two graphs on the same screen. The features.

  With this configuration, the deviation from the statistical average value of the measured part and the absolute value of the measured value can be observed at the same time, and display for more accurate fetal growth evaluation is possible.

  The said structure WHEREIN: The said 1st graph preparation means and the said 2nd graph preparation means can be set as the structure which can display by a percentile instead of the deviation in the said 1st graph and the said 2nd graph. .

  With this configuration, it is possible to observe the percentile with the statistical average value of the measured part and the absolute value of the measured value at the same time, and it is difficult to represent the standard deviation with little statistical data of the measured part. Even when values are used, it is possible to display for more accurate fetal development assessment.

  Further, in the above-described configuration, the second graph has highlight display means for highlighting an area having a difference of a predetermined value or more from the statistical average value by making the color or brightness different from other areas. It can be configured.

  With this configuration, it can be easily understood that the measurement result has a certain difference or more from the statistical average value, and fetal growth evaluation and a display for prompting attention in subsequent examinations are possible.

  Further, in the above configuration, there is provided display interval changing means for externally changing a display interval for deviation or percentile value in the first graph, and the highlighting means is changed by the display interval changing means. The region to be highlighted can be changed in conjunction with the deviation or the percentile display interval.

  With this configuration, the operator can arbitrarily change the difference from the standard value to be noted in the fetal growth evaluation, and can be customized to a device that matches each judgment criterion of the operator.

  Moreover, the said structure can be set as the structure which arranges and displays the pregnancy week number which is a horizontal axis of the said 1st graph and the said 2nd graph in the same position in the up-down direction in the said structure.

  With this configuration, when observing the deviation (or percentile) from the statistical average value of the measured part and the absolute value of the measured value at the same time, the number of gestational weeks on the horizontal axis is displayed together, The comparison of the graphs is facilitated, and a display for quickly performing more accurate fetal growth evaluation becomes possible.

  Moreover, in the said structure, it can be set as the structure which has a display movement means to move the display position of a said 2nd graph to an up-down direction.

  Depending on the size of the region to be measured and the number of gestational weeks, it may occur that the plot is plotted at various positions. With this configuration, even if the area for displaying the graph is narrow, the two graphs can be changed by changing the display position of the graph. It is possible to display the plots so as not to overlap with each other, and even a device having only a small display means can be used for more accurate fetal development evaluation.

  Further, in the above configuration, the recording means for recording the measurement result of an arbitrary part of the fetus together with the date of the examination, the recorded measurement result and the date are read, the date of the examination and the predetermined number of gestational weeks on the reading day From the gestational age calculation means to obtain the number of gestational weeks at the past screening from the past, and from the statistical average value obtained from the gestational weeks at the past screening and the past measurement value, obtain the deviation or percentile of the past measurement value Deviation / percentile calculating means, wherein the first graph creating means plots the measured values at the past gestational week positions of the first graph, and the second graph creating means comprises the second graph. The deviation or percentile of the calculated past measurement value can be plotted at the past pregnancy week position.

  With this configuration, fetal growth can be determined in a complex manner based on two or more results of the screening results on the day of reading and past screening results, so that it can be used for more accurate fetal growth evaluation. Can be displayed.

  In the above configuration, the recording unit records a plurality of examination results, and the first graph creating unit and the second graph creating unit store a plurality of examination results in the first graph and the second graph. It can be configured to plot.

  This configuration makes it easier to grasp the change from the average value as a result of timely changes in fetal development, using more than one result of the screening on the day of reading and past screening results, and more accurate fetal development. It is possible to display for easy evaluation.

  Moreover, the said structure WHEREIN: The said 2nd graph preparation means can be set as the structure which displays the some measured value of a said 2nd graph as a line graph.

  With this configuration, even when the time-related developmental change is slight, it becomes easy to capture the change in the difference from the average, and it is possible to display for use in more accurate fetal growth evaluation.

  Moreover, in the said structure, it can comprise so that several site | parts of a fetus may be measured, recorded, and displayed.

  With this configuration, it is possible to evaluate the growth at a plurality of measurement sites, and it is possible to display information useful for accurate fetal growth evaluation.

  Moreover, in the said structure, it can be set as the structure provided with the means to calculate an estimated infant weight from the measurement result of several parts of a fetus, to record and to display on a screen.

  With this configuration, it is possible to evaluate the estimated baby weight in addition to the growth evaluation, and it is possible to perform display for use in more accurate fetal growth evaluation.

  According to the ultrasonic diagnostic apparatus of the present invention, since the deviation from the statistical average value of the measured part and the absolute value of the measured value can be observed at the same time, the temporal change in development can be easily evaluated. Display for accurate fetal development assessment is possible.

  Hereinafter, an ultrasonic diagnostic apparatus according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
An ultrasonic diagnostic apparatus according to the first embodiment of the present invention is shown in FIG. The ultrasonic diagnostic apparatus includes an ultrasonic probe 1, a transmission circuit unit 2 and a reception circuit unit 3 connected to the probe 1, and a reception signal processing circuit unit 4 that processes a signal from the reception circuit unit 3. .

  Although not shown, the ultrasonic probe 1 includes a piezoelectric vibrator at one end thereof and transmits / receives ultrasonic waves to / from the subject. The transmission circuit unit 2 generates a drive voltage pulse and supplies it to the transducer of the ultrasonic probe 1, and the ultrasonic pulse is transmitted from the transducer. While this ultrasonic pulse propagates through the subject, part of it reflects off the boundary surface where the acoustic impedance is different to form an echo signal, and part of the echo signal is received by the transducer, Converted. The reception circuit unit 3 performs preamplification, delay control, and addition on the voltage signal received by the ultrasonic probe 1. The output of the receiving circuit unit 3 is logarithmically amplified, detected, and A / D converted by the received signal processing unit 4.

  The signal digitized by the received signal processing unit 4 is sent to the DSC 5 as B-mode echo data. The B-mode echo data is converted from ultrasonic scanning data to standard TV scanning data by the DSC 5, and is further written as B-mode image data into the frame memory and temporarily stored. The stored data is read out at an appropriate frame timing and passed to the image composition unit (display means) 6. The image synthesis unit 6 synthesizes the graphic image sent from the control system circuit unit 10 with the B-mode image. The synthesized image data is displayed on the TV monitor 7. The image data synthesized by the image synthesizing unit 6 can be taken out and recorded in the image recording memory 8.

  The control system circuit unit 10 controls the drive timing of the entire apparatus, transmission / reception control, various measurements, generation of drawing graphic data for measurement, graph display function of measurement results according to the present invention, storage of measurement results, and the like. Is the circuit in charge. As shown in FIG. 1, the control system circuit unit 10 includes a central control circuit unit 11 including a CPU and a work memory. A console 12 is connected to the central control circuit unit 11 as an input interface. A part of the output interface of the central control circuit 11 is connected to the above-described image composition unit 6 via the graphics control circuit 13 and the graphics memory circuit 14. Another part of the output interface of the central control circuit 11 is connected to give various control signals to the transmission circuit unit 2, the reception circuit unit 3, the reception signal processing unit 4, the DSC 5, the image synthesis unit 6, and the like. .

  The control system circuit unit 10 further includes a patient data memory (recording means) 15 and a growth curve data table 16 for providing the functions according to the present invention. Further, the central control circuit 11 executes a growth curve creation process, an SD graph creation process, a deviation calculation process, and a week number calculation process, so that a growth curve creation unit (first graph creation means) 17, an SD graph creation unit ( A second graph creating unit) 18, a deviation calculating unit (deviation / percentile calculating unit) 19, and a week number calculating unit (gestation week number calculating unit) 20. However, these units are shown corresponding to software executed by the CPU, and such a circuit does not actually exist.

  The patient data memory 15 includes a patient ID part 21, a patient attribute part 22, and a measurement data part 23 for each patient (each of F10, F11, F12...) As shown in FIG. The patient ID part 21 has a unique number for identifying the patient (hereinafter referred to as patient ID), and the patient attribute part 22 has the patient's name, age, last menstruation date (hereinafter referred to as LMP), the number of gestation weeks, and the expected delivery date. The date and the last examination date are recorded. Moreover, the measurement data part 23 is divided into areas for recording the measurement results such as the examination date 1 and the examination date 2 so that the measurement results for each examination date can be recorded. CRL), large head lateral diameter (BPD), femur length (FL), baby weight, and other measurement results can be recorded.

  In the growth curve data table 16 of FIG. 1, statistical average values and deviations for each gestational week such as CRL, BPD, FL, and infant weight are recorded. Based on the value read from the growth curve data table 16 and the value read from the patient data memory 15, the growth curve creation unit 17 represents each part such as CRL, BPD, FL, and infant weight, and the horizontal axis represents the number of weeks of pregnancy. A graph (hereinafter referred to as a growth curve) is created with the vertical axis as the measurement value or body weight. Based on the value read from the growth curve data table 16 and the value read from the patient data memory 15, the SD graph creation unit 18 obtains a deviation from the average of the measurement results by the deviation calculation unit 19, and the horizontal axis represents the pregnancy week. A graph (hereinafter referred to as an SD graph) is created using the number and the vertical axis as the deviation.

  The operation of the ultrasonic diagnostic apparatus configured as described above will be described with reference to FIGS.

  First, when starting a medical examination, a patient ID is input from the console 12. At this time, if the LMP is known, the LMP is input from the console 12. In the case of the example in FIG. 3, it is assumed that the number of gestational weeks calculated from the LMP is 0 days of 20 weeks. The number of pregnancy weeks is calculated by the week number calculation unit 20 based on the following formula.

Pregnancy week = date of the day−LMP
In addition, when the number of gestation weeks or the expected date of delivery is determined in the previous examination, the value may be directly input on the console 12. The inputted patient ID is recorded in the patient ID part 21 of the patient F10 of the patient data memory 15, and the LMP and the pregnancy week are recorded in the patient attribute part 22 of the patient data memory 15.

  Next, when the ultrasonic probe 1 is applied to a subject (here, a pregnant woman) and ultrasonic waves are transmitted and received, an ultrasonic image is displayed on the TV monitor 7 through the reception signal processing unit 4, DSC 5, and image synthesis unit 6. . When the part to be measured is drawn, the console 12 freezes the image. If the part to be measured is displayed on the frozen image, the measurement key is pressed on the console 12 to start measurement. For example, when BPD is measured, the measurement cursor displayed on the TV monitor 7 is moved on the console 12 to determine the measurement start point and end point. In this example, it is assumed that C (mm). A series of measurement operations so far are controlled by the central control circuit 11, and a measurement cursor is displayed on the TV monitor 7 via the graphics control circuit 13, the graphics memory circuit 14, and the image composition unit 6. Is done. Further, when a key for determining that the BPD is measured is pressed by the console 12, the central control circuit unit 11 displays the BPD measurement result on the examination date of the measurement data unit 23 of the patient F10 in the patient data memory 15. Record in 1 area with date of screening.

  Here, the console 12 pushes a button for giving an instruction to display a growth curve indicating the degree of fetal development. The pressing of the button is recognized by the central control circuit unit 11, and a graph as shown on the upper side of FIG. 3 is displayed on the TV monitor 7 through the graphics control circuit unit 13, the graphics memory 14, and the image composition unit 6. . In this graph, the horizontal axis represents the number of weeks of pregnancy, and the vertical axis represents the measured value. In addition, a statistical average value curve 52 of BPD, a + 1.5SD curve 53 of statistical deviation, and a −1.5SD curve 54 of statistical deviation are displayed in a graph based on data read from the growth curve data table 16. . Further, the measured BPD value 31 is plotted at the position of the number of gestational weeks (in the case of FIG. 3, 12 days 0 days). In the measurement result of this example, the measurement value C (mm) is between the statistical average value A (mm) on 20th week 0 and B (mm) which is −1.5 SD on 20th week 0, and the average It can be seen in the graph that the growth is slightly slower. Creation of this series of growth curves is controlled by the process of the growth curve creation unit 17 of the central control circuit 11.

Further, here, the console 12 pushes a button for giving an instruction to display the SD graph. The pressing of the button is recognized by the central control circuit unit 11, and a graph as shown in the lower side of FIG. 3 is displayed on the TV monitor 7 through the graphics control circuit unit 13, the graphics memory 14, and the image composition unit 6. The In this graph, the abscissa represents the number of weeks of pregnancy, the ordinate represents the deviation, and the growth curve shows a portion where the difference is larger than the deviation displayed as + 1.5SD and −1.5SD, as hatched portions 33 and 34, respectively. In addition, the color (or brightness) is changed and displayed. The deviation of the measured value C (mm) is
(AB) / ((AC) /1.5)
Calculated by This calculation is calculated by the deviation calculator 19. The deviation calculation unit 19 reads the average value A and the value B of −1.5 SD from the growth curve data table 16, and the BPD measurement value C is calculated by the deviation calculation unit 19 from the patient F 10 in the patient data memory 15. Are read out from the area of examination date 1 in the measurement data section 23 and used for calculation. The obtained deviation is plotted as deviation 32 on the graph. With this SD graph, it is possible to grasp more clearly from the growth curve graph how much the BPD measured by the examination is smaller than the average. Creation of a series of these SD graphs is controlled by the SD graph creation unit 18 of the central control circuit 11. Further, the SD graph may be automatically displayed simultaneously with a button operation for displaying a growth curve. Furthermore, both the growth curve and the SD graph may be displayed simultaneously with the BPD measurement end operation.

  Next, FIG. 4 shows a case where a screening is performed at 25 weeks and 0 days of gestation, 5 weeks after the screening date described above. Examination is performed in the same manner as described above, BPD is measured, and the result is displayed as BPD value 35 and deviation 36 in the graph of FIG. At this time, the examination result at the 20th day of week 0 is also displayed as the BPD value 31 and the deviation 32 in the same manner as described above. As shown in FIG. 4, the measurement result on the current day (25 weeks and 0 days) is plotted with ◯, and the plot of 20 weeks and 0 days, which is the past measurement result, is displayed with ×, which makes it easy to discriminate. Alternatively, it is easy to understand by plotting with different colors for each examination day.

  In the growth curve, a line between the plots of the BPD value 31 and the BPD value 35, which are measurement results, is not connected, but a line between the plots of the deviation 32 and the deviation 36 on the SD graph is a line in the manner of a line graph. Connect and display. In the growth curve graph, it is difficult to read the change in the difference from the average value in the plot of the BPD value 31 and the BPD value 35, but in the SD graph, it is easy to see that the deviation 36 is farther from the average than the deviation 32. I can read.

  Further, in the same manner, the measurement results of the screening at 30 weeks 0 days and 35 weeks 0 days are displayed as BPD value 37 and deviation 38 in FIG. 5, respectively, and are displayed as BPD value 39 and deviation 40 in FIG. The In FIG. 6, it can be seen that the growth is gradually delayed at the check-ups of 20 weeks 0 days, 25 weeks 0 days, and 30 weeks 0 days, but at 35 weeks 0 days, the growth delay is somewhat recovered. Easy to read. It is difficult to read this with a growth curve.

  A line graph between plots on the SD graph is controlled and displayed by the SD graph creation unit 18. By displaying in the manner of a line graph, changes in growth delay (increase or decrease in deviation from the average value) can be read more easily.

  As described above, according to the ultrasonic diagnostic apparatus of the first embodiment, the statistical average value curve 52 of BPD, the + 1.5SD curve 53 of statistical deviation, and the −1.5SD curve 54 of statistical deviation are The BPD that is read from the growth curve data table 16 and displayed and measured and recorded together with the date of examination is recorded and read in the examination date 1 area of the measurement data section 23 of the patient F10 in the patient data memory 15. , Plotted in the position of the corresponding recorded gestational weeks. Creation of this series of growth curves is controlled by the growth curve creation unit 17 of the central control circuit 11. Furthermore, when a button for displaying an SD graph is pressed by the console 12, a graph with the abscissa indicating the number of gestation weeks and the ordinate indicating the deviation is displayed, and the deviation calculator 19 calculates the average value A and -1.5SD. Is read from the growth curve data table 16, and the measured value C of BPD is read from the area of the examination date 1 of the measurement data section 23 of the patient F10 in the patient data memory 15, and the deviation is calculated. The obtained deviation is plotted in 32 of the graph. Creation of a series of these SD graphs is controlled by an SD graph creation process 18 of the central control circuit 11. By providing these configurations, it is possible to more clearly grasp how much the BPD measured by the screening is smaller than the average by using the SD graph, and to perform a more accurate fetal growth evaluation. Can do.

  Furthermore, according to the ultrasonic diagnostic apparatus of the present embodiment, portions where the difference is larger than the deviations displayed as + 1.5SD and -1.5SD in the growth curve are indicated by hatching 33 and 34, respectively. Since the SD graph creation unit (highlighting display means) 18 is configured so that the color or brightness is displayed in a different manner, the measurement result is more than a certain difference from the statistical average value (in this example, +1. 5SD or more or -1.5SD or less) can be easily discriminated, and attention can be given to fetal growth evaluation and subsequent examination.

  Furthermore, according to the ultrasonic diagnostic apparatus of the present embodiment, the growth curve creation unit 17 and the SD graph creation unit 18 display the same number of weeks of the growth curve and the SD graph as shown in FIGS. Therefore, when observing the deviation (or percentile) from the statistical average value of the measured part and the absolute value of the measured value at the same time, the number of pregnancy weeks on the horizontal axis is displayed together. The Therefore, when the number of examinations is repeated as shown in FIG. 6, the comparison of the graphs is facilitated, and more accurate fetal growth evaluation can be quickly performed.

  Furthermore, according to the ultrasonic diagnostic apparatus of the present embodiment, as shown in FIG. 2 for plotting measurement results in a plurality of examinations as shown in FIGS. 4 to 6, for each patient (F10, F11) , F12,...), A patient data memory 15 including a patient ID unit 21, a patient attribute unit 22, and a measurement data unit 23, a growth curve data table 16, a growth curve creation unit 17, and an SD graph creation unit. 18. By providing the deviation calculation unit 19 and the week number calculation process 20, fetal growth can be determined in a complex manner based on two or more results of the current day's screening results and past screening results. Accurate fetal development assessment is possible. Furthermore, it is easy to grasp the change from the average value by using two or more results of the current day's screening results and past screening results as timely changes in fetal growth, facilitating more accurate fetal growth evaluation Can be done.

Furthermore, according to the ultrasonic diagnostic apparatus of the present embodiment, as shown in FIG. 6, the SD graph creation unit 18 is configured to connect the plots on the SD graph in the manner of a line graph. It becomes possible to easily read changes in growth delay (increase or decrease in deviation from the average value). As a result, even when the time-dependent developmental change is slight, it becomes easy to capture the change in the difference from the average, and it becomes easier to accurately evaluate the fetal development. (Corresponding to claim 9)
(Second Embodiment)
An ultrasonic diagnostic apparatus according to the second embodiment of the present invention will be described with reference to FIGS. 6, 7A, and 7B. In the present embodiment, the basic configuration of the apparatus is the same as that of the first embodiment shown in FIG. 1, but the console 12 has an operation function for moving the display position of the SD graph up and down. First, the SD graph creation unit 18 has a function of changing the display position of the SD graph by the operation from the console 12, and the display moving means is configured by them. This is different from the configuration of the embodiment.

  In the ultrasonic diagnostic apparatus configured as described above, a growth curve and an SD graph as shown in FIG. 6 are displayed as in the case of the first embodiment. Thereafter, when an operation for moving the SD graph display position upward is performed by operating the console 12, the SD graph creation unit 18 of the central control circuit 11 operates to move the SD graph display position upward. Then, the display on the TV monitor 7 is changed via the graphics control circuit 13, the graphics memory circuit 14, and the image composition unit 6 so as to display as shown in FIG. 7A. When an operation for moving the display position of the SD graph further upward is performed by operating the console 12, the display is moved further upward as shown in FIG. 7B. In general, the growth curve graph is not plotted on the entire graph, and there are many portions where there is no plot on the upper side or lower side of the graph, so the SD graph is aimed at the position where there is no plot. It is also possible to display the plots so that they do not overlap if they move up and down. At this time, as shown in FIG. 7, it is easier to understand if the growth curve is displayed so as not to be hidden behind the SD graph and the graph is changed in color or brightness. . If it becomes somewhat difficult to understand as a result of the movement, the display position of the SD graph can be changed from FIG. 7B to FIG. 7A, FIG. In this way, it can be returned to the original position.

  According to the ultrasonic diagnostic apparatus of the present embodiment, the console 12 having an operation function for moving the SD graph display position up and down, and the SD graph display position according to the operation from the console 12. By providing the SD graph creation process 18 having the function of changing and displaying, the display state of the graph can be easily changed. The growth curve can be plotted at various positions depending on the size of the part to be measured and the number of gestation weeks, but even if the area for displaying the graph is narrow, changing the display position of the graph can change the two graphs. It is possible to display the plots so as not to overlap, and even a device having only a small display means can be used for more accurate fetal growth evaluation.

  In the above description, in the SD graph, the statistical deviation is displayed as the vertical axis as a difference, but this may be changed to the percentile display. At this time, the growth curve is not displayed as +1.5 SD, average value, or −1.5 SD, but may be configured to display, for example, 10% tile, 50% tile, and 90% tile. . With this configuration, it is possible to simultaneously observe the percentile with the statistical average value of the measured part and the absolute value of the measured value. As a result, even when the measured data of the site where the statistical data of the measured site is small and difficult to represent with the standard deviation is used, more accurate fetal growth evaluation can be performed.

  Further, it may be configured such that an operation for changing the standard deviation or the percentile can be performed, or the changed setting is stored, and the setting stored at the next display can be displayed. Further, if the deviation is changed to + 2SD, -2SD, + 1SD, -1SD or the like instead of + 1.5SD or -1.5SD as described above, or in the case of a percentile, 5% tile, 95% It is also possible to provide a display interval changing means for changing from the outside such as a tile or the like, that is, a display interval for a deviation or a percentile value. Then, the changed settings are the statistical average value curve 52, the statistical deviation + 1.5SD curve 53, the statistical deviation −1.5SD curve 54, the vertical axis in the SD graph, and the vertical curve in the SD graph. The display of hatching areas 33 and 34 can be configured to be changed simultaneously by setting.

  With this configuration, the operator can arbitrarily change the difference from the standard value to be noted in the fetal growth evaluation, and can be customized to a device that matches each judgment criterion of the operator.

  In the above description, the case where one measurement site is displayed on the growth curve and the SD graph has been described. However, a configuration in which a plurality of sites can be displayed simultaneously may be provided. In this case, the plots and graphs are displayed so that they can be distinguished from each other by changing the color, brightness, and shape. As a result, it is possible to evaluate growth at a plurality of measurement sites at the same time, and to use it for more accurate fetal growth evaluation.

  In the above description, an example of measuring and displaying an arbitrary part has been described. However, an estimated infant weight obtained by calculation from measurement results of a plurality of parts may be displayed. As a result, it is possible to make an evaluation by adding the estimated infant weight to the growth evaluation, and it can be used for more accurate fetal growth evaluation.

  Also, in the second embodiment, an example is shown in which the display position of the SD graph can be moved. However, the function of storing the moved position and displaying it at the stored position at the next display is provided. This configuration is effective for quickly performing fetal growth evaluation.

  Further, the operating means on the console 12 for moving the table position of the SD graph up and down can be configured as a button that slides up and down like a volume knob, a rotary knob, and the like. Thereby, a quicker operation becomes possible.

  In the above description, the case where BPD, FL, CRL, and estimated infant weight are displayed is taken as an example, but measurement of other parts, measurement using amniotic fluid (AFI), Doppler mode (RI, PI, etc.) ) Etc. are also effective. Furthermore, it is effective even when the operator collects data independently, registers the statistical result in the apparatus, and displays the graph using the data.

  In the above description, the case where the growth curve and the SD graph are displayed on the TV monitor 7 is taken as an example. However, in the configuration shown in FIG. It may be recorded. The image recording memory 8 is equally effective whether it is provided inside the ultrasonic diagnostic apparatus or connected to the outside. Further, instead of the image recording memory 8, an external display device or an external image recording device can be connected.

  In the above description, the case where a growth curve and an SD graph are displayed simultaneously is taken as an example, but the measured image, the numerical value of the measurement result, or the patient attribute data (ID, name, age, gestational week, scheduled delivery) It is also effective to display on the same screen in combination with a pictographic display indicating the measured part and the like, or in combination with some contents selected from them.

  The ultrasonic diagnostic apparatus of the present invention has a display function that makes it possible to easily evaluate temporal changes in development, and is an ultrasonic diagnostic apparatus that is applied to examination or diagnosis of pregnant women in obstetrics and gynecology Useful.

The block diagram of the ultrasonic diagnostic apparatus in the 1st Embodiment of this invention The figure which shows the structure of the memory for patient data of the ultrasonic diagnostic apparatus The figure which shows the example 1 of a display of the growth curve and SD graph by the ultrasonic diagnostic apparatus The figure which shows the example 2 of a display of the growth curve and SD graph by the ultrasonic diagnostic apparatus The figure which shows the example 3 of a display of the growth curve and SD graph by the ultrasonic diagnostic apparatus The figure which shows the example 4 of a display of the growth curve and SD graph by the ultrasonic diagnostic apparatus The figure which shows the example of a display of the growth curve and SD graph by the ultrasonic diagnosing device in the 2nd Embodiment of this invention The figure which shows the other example of a display of the growth curve and SD graph by the ultrasonic diagnostic apparatus The figure which shows the display of the growth curve graph by the ultrasonic diagnostic apparatus of a prior art example The figure which shows the graph display of the deviation by the ultrasonic diagnostic apparatus of another conventional example

Explanation of symbols

1 Ultrasonic probe 2 Transmission circuit 3 Reception circuit 4 Reception signal processing 5 DSC
6 Image composition 7 TV monitor 10 Control system circuit unit 11 Central control circuit 12 Console 13 Graphics control circuit 14 Graphics memory circuit 15 Memory for patient data 16 Growth curve data table 17 Growth curve creation unit 18 SD graph creation unit 19 Deviation Calculation unit 20 Number of weeks calculation unit 21 Patient ID unit 22 Patient attribute unit 23 Measurement data unit 50 Horizontal axis of growth curve (number of weeks)
51 Vertical axis of growth curve (measured value)
52 Statistical average of BPD 53 Upper limit of statistical deviation of BPD (+1.5 SD)
54 Lower limit of statistical deviation of BPD (-1.5SD)
55 Horizontal axis of SD graph (weeks)
56 Vertical axis of SD graph (deviation)

Claims (11)

Based on the ultrasound image obtained using the ultrasound probe, the physique of the fetus is measured on the ultrasound image, and the relationship between the standard value and the measured value of the fetal pregnancy week at the measurement site is displayed. In the ultrasonic diagnostic apparatus configured as described above,
The horizontal axis is the number of gestational weeks, the vertical axis is the measured value, and the measurement result of any part of the fetus is plotted at the predetermined gestational week position, the statistical average graph of the measured part, and the deviation A first graph creating means for creating a first graph displayed in one graph together with the graph;
A second graph creating means for creating a second graph in which the abscissa represents the number of weeks of pregnancy, the ordinate represents the standard deviation, and the difference between the measurement result and the statistical average value of the part is represented by the deviation;
An ultrasonic diagnostic apparatus comprising: display means for displaying the first graph and the second graph on the same screen.   2. The ultrasonic diagnostic apparatus according to claim 1, wherein the first graph creating unit and the second graph creating unit can display a percentile instead of a deviation in the first graph and the second graph. .   3. The highlighting means for highlighting an area having a difference of a predetermined value or more from a statistical average value in the second graph with a color or brightness different from those of other areas. The ultrasonic diagnostic apparatus as described. A display interval changing means for changing the display interval for the deviation or percentile value from the outside in the first graph;
The ultrasonic diagnostic apparatus according to claim 3, wherein the highlighting unit changes a region to be highlighted in the second graph in conjunction with the deviation or percentile display interval changed by the display interval changing unit.   5. The ultrasonic diagnostic apparatus according to claim 1, wherein the display unit displays the number of gestational weeks that are the horizontal axes of the first graph and the second graph in the same position in the vertical direction. .   The ultrasonic diagnostic apparatus according to claim 1, further comprising a display moving unit that moves a display position of the second graph in the vertical direction. Recording means for recording the measurement result of an arbitrary part of the fetus together with the date of the examination, the recorded measurement result and date are read, and the date of the examination and the pre-determined number of gestation weeks on the day of the previous reading A means of calculating the number of gestation weeks, a means of calculating a deviation or percentile of a past measurement value or a percentile from a statistical average value obtained from the number of gestation weeks at the time of past screening and a past measurement value; With
The first graph creating means plots the measurement value at the past pregnancy week position of the first graph, and the second graph creating means plots the measurement value at the past pregnancy week position of the second graph. The ultrasonic diagnostic apparatus according to claim 1, wherein the calculated deviation or percentile of the past measurement value is plotted.   The recording unit records a plurality of examination results, and the first graph creating unit and the second graph creating unit plot a plurality of examination results on the first graph and the second graph. The ultrasonic diagnostic apparatus as described.   The ultrasonic diagnostic apparatus according to claim 8, wherein the second graph creating unit displays a plurality of measured values of the second graph as a line graph.   The ultrasonic diagnostic apparatus according to claim 1, wherein the ultrasonic diagnostic apparatus is configured to measure, record, and display a plurality of fetal regions.   The ultrasonic diagnostic apparatus according to claim 10, comprising means for calculating an estimated infant weight from a measurement result of a plurality of sites of the fetus, recording it, and displaying it on a screen.

Images