JP2010005139A - Ultrasonic diagnostic apparatus and analysis data display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately observe analysis data on trend data in a desired period. <P>SOLUTION: A data analysis part 6 executes the analysis necessary for evaluating the growth of a fetus, for example, based on ultrasonic data collected from a subject by the ultrasonic scanning using a transmission/receiving part 2 and an ultrasonic probe 3 when the variation of the analysis data in time obtained based on the ultrasonic data of the subject are observed as trend data. On the other hand, a trend data generating part 73 generates the trend data in a regular display mode by using the analysis data obtained at the time and the past analysis data of the subject stored in an analysis data storing part 71, and further generates the trend data in an enlarged display mode by enlarging the display scale for an enlarged display period in the trend data in the regular display mode based on a display mode selecting signal and enlarged display period setting information fed from an input part 8. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an ultrasonic diagnostic apparatus and an analysis data display apparatus, and more particularly, to display analysis data obtained based on image data of a predetermined period collected from the same subject as time-series trend data. The present invention relates to a sonic diagnostic apparatus and an analysis data display apparatus.

  The ultrasonic diagnostic apparatus radiates an ultrasonic pulse generated from a vibration element built in an ultrasonic probe into a subject, and receives an ultrasonic reflected wave caused by a difference in acoustic impedance of the subject tissue by the vibration element. It collects various biological information. In this diagnostic method, real-time two-dimensional image data and three-dimensional image data can be easily observed with a simple operation by simply bringing an ultrasonic probe into contact with the body surface. Widely used.

  Ultrasound diagnostic methods for obtaining biological information from ultrasound reflected waves from tissues or blood cells in the body have made rapid progress with the development of two major technologies, the ultrasonic pulse reflection method and the ultrasonic Doppler method. Observation of B-mode image data, color Doppler image data, and the like obtained by using them is indispensable in today's ultrasonic image diagnosis. In particular, the ultrasonic diagnostic method is widely used as a standard diagnostic method in the obstetrics field because it is free from X-ray exposure damage and is not invasive to the subject. Various diagnoses and treatments are performed on prenatal fetuses.

  One of ultrasonic diagnostic methods for the fetus is fetal growth measurement. This fetal growth measurement measures the shape and size of each organ in the pregnant fetus and also the blood flow state, and is one of the important diagnostic methods for evaluating the fetal growth state.

  In the measurement of fetal growth in the early stages of pregnancy, the gestational sac (GS), which is formed in the uterine lumen by a fertilized egg (fertilized egg) that has been implanted on the uterine wall at 4-6 weeks of gestation, is also depicted in the fetus itself. "Crow-rump length (CRL)" that indicates the distance from the head of the fetus to the buttocks at 7-11 weeks of gestation, and the head of the fetus after 12-20 weeks of gestation The diameter of the transverse cross section, such as “BPD: biparietal diameter”, is measured.

  In addition, in the second trimester and the second trimester, in addition to the above-mentioned “large head diameter”, “occipital frontal diameter (OFD)”, “abdominal circumference (AC)”, The fetal growth state is diagnosed by measuring “femur length (FL)” which is the length of the long axis of the femur. And calculation of “estimated fetal weight (EFW)” obtained by using measurement data such as “child head large transverse diameter” obtained at predetermined time intervals (for example, biweekly intervals) and the like. Temporal changes in data (hereinafter collectively referred to as analysis data) are displayed as trend data on a display unit or the like of the ultrasonic diagnostic apparatus.

On the other hand, in recent years, a standard growth curve (hereinafter referred to as standard data) indicating a standard value recommended by an authorized specialist, an academic society, etc., and a temporal change of an upper limit value and a lower limit value of a normal range centered on this standard value. ) Has been proposed (see, for example, Patent Document 1), which can easily determine the growth status of the fetus by superimposing the above-described analysis data obtained from the subject. .
JP-A-9-251364

  By the way, conventionally, since the time axis of trend data generated based on ultrasonic image data or the like has been set at equal intervals, for example, a pregnant woman who has undergone a fetal development test at a biweekly frequency in early pregnancy and midgestation ( When the test frequency is increased every other day due to the hospitalization of the subject) at 39 gestational weeks, the analysis data after 39 weeks indicated on the same trend data are displayed in duplicate. For this reason, there is a problem that it becomes difficult to observe in detail the analysis data particularly in the perinatal period which is particularly important in the fetal growth test.

  The present invention has been made in view of the above-described problems, and the purpose of the present invention is to observe the temporal change of analysis data obtained based on the ultrasonic data of the subject as trend data. An object of the present invention is to provide an ultrasonic diagnostic apparatus and an analysis data display apparatus that enable observation with high accuracy by enlarging or reducing a display scale in a desired period.

  In order to solve the above-described problem, an ultrasonic diagnostic apparatus according to the first aspect of the present invention is an ultrasonic diagnostic apparatus that generates trend data based on an analysis result of ultrasonic data collected from a subject. Ultrasound data generating means for generating ultrasonic data based on a reception signal obtained by transmitting / receiving ultrasonic waves to / from the specimen, data analyzing means for analyzing the ultrasonic data, and a plurality of data obtained by the data analyzing means Trend data generating means for arranging analysis data corresponding to the generation date and time of the ultrasonic data and generating first trend data; and display means for displaying the trend data, wherein the trend data generating means The second trend is achieved by enlarging or reducing the display scale of the first trend data in a desired period based on a predetermined enlargement ratio. Generates Rendodeta is characterized in the displayed first trend data updating by said second trend data in the display unit.

  On the other hand, an analysis data display device according to the present invention according to claim 11 is an analysis data display device that displays temporal changes in analysis data collected from a subject as trend data, and a plurality of analyzes obtained from the subject. Trend data generating means for arranging data corresponding to the collection date and time to generate first trend data, and display means for displaying the trend data, wherein the trend data generating means includes the first trend data The second trend data is generated by enlarging or reducing the display scale in the desired period based on a predetermined enlargement ratio, and the first trend data displayed on the display means is used as the second trend data. It is characterized by updating by.

  According to the present invention, when observing temporal changes in analysis data obtained based on ultrasonic data collected from a subject as trend data, the display scale in the desired period of the trend data is increased or reduced. The accuracy can be observed. For this reason, it becomes possible to improve diagnostic efficiency and diagnostic accuracy.

  Embodiments of the present invention will be described below with reference to the drawings.

  In the ultrasonic diagnostic apparatus of the present embodiment described below, when observing temporal changes in analysis data obtained based on the ultrasonic data of the subject as trend data, ultrasonic data collected by ultrasonic scanning on the subject The display unit displays the trend data of the normal display mode generated using the analysis data obtained at this time and the analysis data obtained in advance and the past analysis data of the subject stored in advance. indicate. Next, when the enlarged display mode is selected, the trend data of the enlarged display mode is obtained by enlarging the display scale of the enlarged display period in the trend data of the normal display mode based on the selection signal and the setting information of the enlarged display period. To update the trend data in the normal display mode already displayed.

  In the following embodiments, two-dimensional B-mode image data is generated as ultrasound data based on the received signal obtained by sector scanning on the subject, and fetal growth evaluation is performed based on the ultrasound data. Although the case where effective estimated fetal weight is collected as analysis data will be described, the present invention is not limited to this.

(Device configuration)
The configuration and basic operation of the ultrasonic diagnostic apparatus according to the embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing the overall configuration of the ultrasonic diagnostic apparatus according to the present embodiment, and FIG. 2 shows a specific configuration of a transmission / reception unit and an ultrasonic data generation unit included in the ultrasonic diagnostic apparatus. It is a block diagram.

  An ultrasonic diagnostic apparatus 100 shown in FIG. 1 transmits an ultrasonic pulse (transmitted ultrasonic wave) to a diagnosis target part of a subject, and an ultrasonic reflected wave (received ultrasonic wave) obtained by this transmission is an electric signal. An ultrasonic probe 3 in which a plurality of vibration elements to be converted into (reception signals) are arranged, and a drive signal for transmitting an ultrasonic pulse in a predetermined direction of the subject is supplied to the vibration elements, Transmitting / receiving unit 2 that performs phasing addition of the reception signals of a plurality of channels obtained from the vibrating element, and processing for processing the reception signal after phasing addition to generate time-series ultrasonic data (B-mode image data). The sonic data generation unit 4 and an ultrasonic data storage unit 5 that stores ultrasonic data suitable for fetal growth evaluation selected from time-series ultrasonic data are provided.

  Furthermore, the ultrasonic diagnostic apparatus 100 obtains analysis data (that is, estimated fetal weight) by performing a predetermined analysis on the selected ultrasonic data and the data obtained in a predetermined period. Analysis data display device 7 for displaying trend data generated using a plurality of analysis data, setting of an enlarged display period and an enlargement ratio for trend data, selection of normal display mode and enlarged display mode, selection of enlarged display method, various types An input unit 8 for inputting a command signal and the like, and a system control unit 9 for comprehensively controlling each unit described above are provided.

  The ultrasonic probe 3 has N arranged vibration elements (not shown) at its distal end, and transmits and receives ultrasonic waves by bringing the distal end into contact with the body surface of the subject. The vibration element is an electroacoustic transducer that converts electrical pulses (driving signals) into ultrasonic pulses (transmitting ultrasonic waves) during transmission, and converts ultrasonic reflected waves (receiving ultrasonic waves) into electrical reception signals during reception. It has a function to do. Each of these vibration elements is connected to the transmission / reception unit 2 via an N-channel multi-core cable (not shown).

  Next, the transmission / reception unit 2 illustrated in FIG. 2 includes a transmission unit 21 that supplies a drive signal to the vibration element of the ultrasonic probe 3 and a reception unit that performs phasing addition on the reception signal obtained from the vibration element. 22 is provided.

  The transmission unit 21 includes a rate pulse generator 211, a transmission delay circuit 212, and a drive circuit 213. The rate pulse generator 211 transmits transmission ultrasonic waves by dividing the reference signal supplied from the system control unit 9. A rate pulse that determines the repetition period of is generated. The transmission delay circuit 212 includes the same number of independent delay circuits as the Nt number of vibration elements used for transmission, and transmits the transmission ultrasonic wave in a predetermined direction θp and a focusing delay time for focusing the transmission ultrasonic wave to a predetermined depth. A deflection delay time for the purpose is applied to the rate pulse supplied from the rate pulse generator 211. The drive circuit 213 has the same number of independent drive circuits as the transmission delay circuit 212, and generates a drive signal based on the rate pulse to which the above-described delay time is given by the transmission delay circuit 212. Then, Nt vibration elements selected for transmission from among the N vibration elements arranged by the ultrasonic probe 3 are driven by the drive signal, and transmission ultrasonic waves are emitted into the body of the subject.

  On the other hand, the receiving unit 22 includes an Nr channel preamplifier 221, an A / D converter 222 corresponding to Nr number of vibration elements selected for reception from among the N number of vibration elements built in the ultrasonic probe 3, and A reception delay circuit 223 and an adder 224 are provided, and the Nr channel reception signal supplied from the reception vibration element via the preamplifier 221 is converted into a digital signal by the A / D converter 222, and the reception delay circuit 223. The reception delay circuit 223 uses an A / D converter to convert a focusing delay time for focusing received ultrasonic waves from a predetermined depth and a deflection delay time for setting reception directivity with respect to a predetermined direction θp. An adder 224 adds the reception signals from the reception delay circuit 223 to each of the reception signals of the Nr channel output from 222. In other words, the reception signal obtained from the predetermined direction θp is phased and added by the reception delay circuit 223 and the adder 224.

  Next, the ultrasonic data generation unit 4 has a function of generating B-mode image data as ultrasonic data, and includes an envelope detector 41, a logarithmic converter 42, and a data storage unit 43. The envelope detector 41 envelope-detects the received signal after the phasing addition supplied from the adder 224 of the receiving unit 22, and the amplitude of the received signal after the envelope detection is logarithmically converted in the logarithmic converter 42. Then, B-mode data in the predetermined direction θp is generated. The B mode data sequentially supplied from the logarithmic converter 42 along with ultrasonic transmission / reception in the transmission / reception direction θp (θp = θ1 to θP) is stored in the data storage unit 43 in correspondence with the transmission / reception direction and is stored in the ultrasonic data. B-mode image data is generated. Note that the envelope detector 41 and the logarithmic converter 42 may be configured by changing the order.

  Then, for example, “estimated fetal weight” is calculated from a plurality of ultrasonic data generated in the above-described ultrasonic data generation unit 4 and displayed in real time on a display unit 74 described later provided in the analysis data display device 7. Ultrasound data suitable for the measurement of the required “baby head large lateral diameter”, “abdominal circumference” and “femoral length” is selected based on the selection signal of the ultrasound data supplied from the input unit 8, The selected ultrasound data is stored in the ultrasound data storage unit 5 shown in FIG. 1 with the measurement information such as the subject information, ultrasound data collection date and time, and “child head large lateral diameter” as supplementary information.

  On the other hand, the data analysis unit 6 is a calculation unit that calculates the “estimated fetal weight” based on the measurement of the “large head lateral diameter”, “abdominal circumference”, and “femoral length” and the measurement results thereof, A measurement software used for these measurements and calculations and a software storage unit (not shown) in which the calculation software is stored in advance are provided.

  The calculation unit of the data analysis unit 6 is read from the ultrasonic data storage unit 5, and the input device of the input unit 8 has each of the ultrasonic data sequentially displayed on the display unit 74 of the analysis data display device 7. Based on the position information of the set distance measurement marker and the measurement software read from the software storage unit, measure the “large head diameter”, “abdominal circumference”, and “femoral length” in these ultrasonic data. .

Further, the calculation unit obtains the measurement results [BPD] (cm), [AC] (cm), and [FL] ("long head diameter", "abdominal circumference", and "femur length" obtained) cm) is read from the software storage unit, for example, is substituted into calculation software represented by the following equation (1) to calculate “estimated fetal weight” [EFW] (g).

  Next, the analysis data display device 7 shown in FIG. 1 includes an analysis data storage unit 71, a standard data storage unit 72, a trend data generation unit 73, and a display unit 74.

  The analysis data storage unit 71 stores a plurality of past analysis data (child head large diameter data) obtained from the subject, the collection date and time of the ultrasound data involved in the calculation of the analysis data, subject information, and The measurement items are stored in advance as incidental information, and the latest analysis data supplied from the data analysis unit 6 is also stored together with similar incidental information. Furthermore, the measurement results of “large head lateral diameter”, “abdominal circumference”, and “femur length” used for the calculation of these analysis data are also stored with the same additional information as necessary.

  On the other hand, the standard data storage unit 72 includes standard values such as “estimated fetal weight”, “large head horizontal diameter”, “abdominal circumference”, “femoral length” and the like recommended by an authorized specialist or academic society. Standard data indicating temporal changes in the upper limit value and the lower limit value of the normal range centered on the standard value is stored in advance.

  Next, the trend data generation unit 73 reads the past analysis data and the latest analysis data obtained from the subject from the analysis data storage unit 71 based on the incidental information, and further, the standard of “estimated fetal weight” Data is read from the standard data storage unit 72. Then, based on the collection date and time of the ultrasonic data involved in the calculation of the analysis data, which is one of the accompanying information, each analysis data is superimposed on the standard data to generate the normal display mode trend data (first trend data). To do.

  Further, the trend data generation unit 73 generates the trend data (second trend data) in the enlarged display mode by expanding the display scale of the desired period in the trend data in the normal display mode. The details of the trend data generated in the normal display mode and the enlarged display mode will be described later.

  The display unit 74 includes a conversion circuit and a monitor (not shown), and the conversion circuit is provided with ultrasonic data supplied in real time from the ultrasonic data generation unit 4 or “child head large side supplied from the ultrasonic data storage unit 5”. Predetermined display of ultrasonic data suitable for measurement such as “diameter”, “abdominal circumference”, “femoral length”, and the like, as well as trend data in the normal display mode and the enlarged display mode supplied from the trend data generation unit 73 The data is converted into a format and displayed on the monitor.

  Next, the input unit 8 includes an input device such as a keyboard, a trackball, a mouse, a selection button, an input button and a display panel on the operation panel, and a display mode selection function 81 for selecting a normal display mode or an enlarged display mode. An enlarged display period setting function 82 for setting an enlarged display period for trend data in the normal display mode, an enlargement ratio setting function 83 for setting an enlargement ratio in the enlarged display mode, and a display method selection for selecting a display method in the enlarged display mode Function 84 is provided.

  In addition, the above-mentioned display panel and input device are also used for input of object information, setting of ultrasonic data generation conditions, selection of ultrasonic data suitable for measurement such as “large head diameter”, input of various command signals, etc. Done with.

  The system control unit 9 includes a CPU and a storage circuit (not shown), and various information input / set / selected by the input unit 8 is stored in the storage circuit. Then, the CPU comprehensively controls each unit of the ultrasonic diagnostic apparatus 100 based on the above-described information input from the input unit 8 and information stored in advance in its own storage circuit, so that the ultrasonic data and the trend Generate and display data.

  Next, trend data in the normal display mode and the enlarged display mode generated by the trend data generation unit 73 of the analysis data display device 7 will be described with reference to FIGS. FIG. 3 shows the trend data in the normal display mode related to the “estimated fetal weight” generated in the period [ac], and the trend data in this case was recommended by academic societies as described above. It is formed by superimposing the past and latest analysis data calculated by the data analysis unit 6 on standard data indicating temporal changes in the standard value of the “estimated fetal weight” and the upper and lower limits of the normal range. In FIG. 3 and FIG. 4 and FIG. 5 shown below, the temporal change of the standard value constituting the standard data is indicated by a solid line, and the temporal change of the upper limit value and the lower limit value of the normal range is indicated by a broken line and an alternate long and short dash line. Furthermore, past and latest analysis data are indicated by ●.

  In the trend data of the normal display mode shown in FIG. 3, for example, a subject who has undergone a fetal growth test at a frequency of once every two weeks in a period [ab] is at the time of 39 weeks of pregnancy. When the examination frequency of the period [bc] increases once every three days due to hospitalization, the analysis data after the 39th week shown in the period [bc] are displayed in an overlapping manner. It is difficult to observe each of them with high accuracy.

  FIG. 4 shows the trend data in the enlarged display mode generated by the trend data generation unit 73 of this embodiment based on the first display method selection signal supplied from the input unit 8 for such a problem. It is. For example, the left end portion and the right end portion of the region of interest (ROI) superimposed on the trend data in the normal display mode shown in FIG. 4A according to the enlarged display mode selection signal supplied from the input unit 8 are input unit 8. The period [b-c] is set as the enlarged display period by moving (dragging) using the input device provided in. At this time, based on the first display method selection signal, the enlargement ratio setting information, and the enlargement display start command signal supplied from the input unit 8, the trend data of the period [bc] (hereinafter referred to as subtrend data). )), The display scale in the time axis direction is enlarged as shown in FIG.

  On the other hand, the display scale of the period [ab] not included in the enlarged display period is reduced as the display scale of the period [bc] is enlarged, and the display scale is reduced [ab]. ] And the sub-trend data of the expanded period [bc] are combined to expand corresponding to the first display method selection signal having approximately the same size as the trend data in the normal display mode. Display mode trend data is generated.

  On the other hand, FIG. 5 shows trend data in the enlarged display mode generated by the trend data generation unit 73 based on the second display method selection signal supplied from the input unit 8, and is the same as in the case of FIG. For example, in accordance with the enlarged display mode selection signal supplied from the input unit 8, the left and right ends of the region of interest superimposed on the trend data in the normal display mode shown in FIG. The period [b-c] is set to the enlarged display period by moving using the input device provided in. At this time, the sub-trend data of the period [bc] based on the second display method selection signal, the enlargement ratio setting information, and the enlargement display start command signal supplied from the input unit 8 are shown in FIG. As shown in FIG.

  In this sub-trend data, the display scale is expanded with respect to the horizontal axis indicating the time axis direction and the vertical axis indicating the estimated fetal weight, and the period [bc] expanded by such a method is used. By superimposing the sub-trend data on the trend data in the normal display mode (see FIG. 5A), the trend data in the enlarged display mode corresponding to the second display method selection signal is generated. In this case, the sub-trend data in the period [bc] in which the display scale in the horizontal axis direction and the vertical axis direction is enlarged is superimposed on the trend data in the normal display mode as pop-up data.

  As shown in FIGS. 4B and 5B, when the subtrend data in the period [bc] is enlarged and displayed, the background color of the subtrend data in the period [ab] is used as the background color. Alternatively, the enlarged trend data can be easily identified by setting the trend data to be different from the background color in the normal display mode.

(Trend data display procedure)
Next, the trend data display procedure in the normal display mode and the enlarged display mode of this embodiment will be described with reference to the flowchart of FIG.

  Prior to the collection of the ultrasonic data necessary for generating the trend data, the operator of the ultrasonic diagnostic apparatus 100 inputs the subject information and the collection date and time of the ultrasonic data at the input unit 8, and further, the ultrasonic data Generation conditions and display conditions are set (step S1 in FIG. 6).

  When the above initial setting is completed, the operator, for example, the body surface position of the subject suitable for the measurement of the “large head diameter” which is the first measurement item necessary for calculating the “estimated fetal weight”. Then, an ultrasonic data generation start command is input from the input unit 8 with the tip of the ultrasonic probe 3 fixed. Then, when this command signal is supplied to the system control unit 9, ultrasonic transmission / reception for the purpose of generating time-series ultrasonic data is started.

  That is, the rate pulse generator 211 in the transmission / reception unit 2 of FIG. 2 divides the reference signal supplied from the system control unit 9 to determine the repetition period of the ultrasonic pulses radiated into the subject. A pulse is generated, and this rate pulse is supplied to the transmission delay circuit 212.

  The transmission delay circuit 212 gives the rate pulse a focusing delay time for focusing the ultrasonic wave to a predetermined depth and a deflection delay time for transmitting the ultrasonic wave in the first transmission / reception direction θ1, and this rate pulse. Is supplied to the drive circuit 213. The drive circuit 213 supplies a drive signal generated based on the rate pulse to Nt transmitting vibration elements in the ultrasonic probe 3 via a cable (not shown), and generates an ultrasonic pulse in the θ1 direction of the subject. Radiate.

  A part of the ultrasonic pulse radiated into the subject is reflected at the boundary surface of the heart, myocardial tissue or the like having different acoustic impedance, and these ultrasonic reflected waves (received ultrasonic waves) are Nr in the ultrasonic probe 3. Are converted into Nr channel electrical signals (reception signals) by the receiving vibration element. These received signals are amplified to a predetermined magnitude by the preamplifier 221 of the receiving unit 22, converted into a digital signal by the A / D converter 222, and then a predetermined delay time by the reception delay circuit 223. Are added and synthesized by the adder 224 (phased addition). At this time, the reception delay circuit 223 has a convergence delay time for focusing the ultrasonic reflected wave from a predetermined depth and a deflection delay for giving a strong reception directivity in the transmission / reception direction θ1 with respect to the ultrasonic reflected wave. The time is set based on a control signal from the system control unit 9.

  Next, the envelope detector 41 and the logarithmic converter 42 of the ultrasonic data generation unit 4 perform envelope detection and logarithmic conversion on the received signal bundled in one channel by the phasing addition in the adder 224 to obtain B-mode data. The B-mode data obtained is stored in the data storage unit 43.

  Next, the system control unit 9 performs ultrasonic transmission / reception in the same procedure with respect to the transmission / reception direction θp (θp = θ2 to θP), and the B-mode data obtained at this time is also stored in the data storage of the ultrasonic data generation unit 4. Stored in the unit 43. That is, the data storage unit 43 sequentially stores B-mode data obtained by ultrasonic transmission / reception in the transmission / reception directions θ1 to θP, and generates B-frame image data for one frame as ultrasonic data. The sound wave data is displayed on the monitor of the display unit 74 provided in the analysis data display device 7. Furthermore, by repeating the above-described procedure, ultrasonic data is generated in time series and sequentially displayed on the monitor.

  On the other hand, the operator who has observed a plurality of ultrasonic data displayed in time series on the display unit 74 selects ultrasonic data suitable for measuring the “large head diameter” from these ultrasonic data. Further, subject information, ultrasonic data collection date and time, and information on the measurement item “large size of the head” are added to the selected ultrasonic data and stored in the ultrasonic data storage unit 5 of FIG. Similarly, suitable ultrasound data is collected for the measurement items “abdominal circumference” and “femur length”, and the obtained ultrasound data includes subject information, ultrasound data collection date and time, and measurement items. Information is added and stored in the ultrasonic data storage unit 5 (step S2 in FIG. 6).

  When the collection of the ultrasonic data for the purpose of measuring the “large head diameter”, “abdominal circumference” and “femur length” necessary for calculating the “estimated fetal weight” is completed, the input unit 8 The display unit 74 that supplies the data analysis start command to the display unit 74 and the data analysis unit 6 and receives this command signal via the system control unit 9 receives the above-described data stored in the ultrasonic data storage unit 5. Ultrasound data is sequentially read and displayed on its own monitor. Next, the operator uses the input device of the input unit 8 to set a distance measurement marker at a position corresponding to “large horizontal diameter of the head”, “abdominal circumference”, and “femur length” of the ultrasonic data. .

  On the other hand, the data analysis unit 6 that has received the command signal, based on the position information of the distance measurement marker supplied from the input unit 8 via the system control unit 9 and the measurement software read from its own software storage unit, “ Measure the “large head diameter”, “abdominal circumference” and “femur length”. Further, the calculation unit uses the obtained measurement results of “large head lateral diameter”, “abdominal circumference” and “femur length” and the calculation software read from the software storage unit as analysis data. Calculate “estimated fetal weight”. Then, the above-described subject information, ultrasound data collection date and time, and measurement item information are added to the obtained analysis data and stored in the analysis data storage unit 71 of the analysis data display device 7 (step S3 in FIG. 6).

  When the analysis on the ultrasound data (that is, the calculation of “estimated fetal weight”) is completed, the operator inputs a trend data generation start command at the input unit 8 (step S4 in FIG. 6). The trend data generation unit 73 of the analysis data display device 7 that has received the data reads out the past analysis data and the latest analysis data of the subject stored in the analysis data storage unit 71 in units of measurement items, and further stores the standard data From the unit 72, standard data of the estimated fetal weight is read. Then, based on the ultrasonic data collection date and time added to each analysis data, the analysis data is superimposed on the standard data to generate the trend data (first trend data) in the normal display mode, and the analysis data display device 7 on the display unit 74 (step S5 in FIG. 6).

  Next, if the operator selects an enlarged display mode in the input unit 8 (step S6 in FIG. 6), the display unit 74 that has received this selection signal displays the normal display mode displayed on its own monitor. A region of interest (ROI) of a predetermined size is set in the trend data, and the operator moves (drags) the left end and the right end of the region of interest using the input device of the input unit 8 to set the enlarged display period. Setting is made (step S7 in FIG. 6). Further, the operator selects a display method in the enlarged display mode and sets an enlargement ratio using the input unit 8, and inputs an enlarged display start command (steps S8 and S9 in FIG. 6).

  Then, the trend data of the analysis data display device 7 that has received the display mode selection signal (that is, the first display mode selection signal or the second display mode selection signal), the enlargement ratio setting information, and the enlarged display start command signal. The generation unit 73 enlarges the display scale of the enlarged display period set in the trend data of the normal display mode relative to the display scales of the other display periods to generate the trend data (second trend data) of the enlarged display mode. (See FIG. 4B or FIG. 5B). Then, the generated trend data of the enlarged display mode is displayed on the monitor of the display unit 74 (step S10 in FIG. 6).

  On the other hand, when the operator selects the normal display mode in the input unit 8 following the generation and display of the enlarged display mode (step S11 in FIG. 6), the trend in the normal display mode is performed in the same procedure as in step S5. Data is generated and displayed (step S5 in FIG. 6), and when the normal display mode is not selected, the trend data is continuously displayed in the enlarged display mode (step S12 in FIG. 6).

  According to the embodiment of the present invention described above, when observing temporal changes in analysis data obtained based on ultrasonic data collected from a subject as trend data, the display scale of the trend data in a desired period is expanded. By doing so, trend data and analysis data in a clinically important period can be observed with high accuracy. For this reason, it becomes possible to improve diagnostic efficiency and diagnostic accuracy.

  In particular, according to the above-described embodiment, time-series analysis data and standard data are enlarged and displayed along with the enlarged display of trend data, so that it is accurately determined whether or not the latest analysis data is in the normal range. can do.

  In addition, the trend data in the enlarged display mode generated based on the first display method selection signal generates the trend data in the enlarged display mode by synthesizing the sub trend data in the enlarged display period and the sub trend data in other periods. Therefore, the subtrend data in both periods can be displayed continuously. For this reason, fetal growth evaluation based on trend data for the entire period can be performed at the same time, and visibility is greatly improved.

  On the other hand, in the trend data of the enlarged display mode generated based on the second display method selection signal, the enlarged display in which the display scale of the horizontal axis indicating the time axis direction and the vertical axis indicating the estimated fetal weight is enlarged. Because the trend data in the enlarged display mode is generated by superimposing the sub-trend data of the period on the trend data in the normal display mode, it is possible to accurately capture the subtle changes in the estimated fetal weight during the enlarged display period. It becomes easier to compare with.

  According to the above-described embodiment, when the trend data of a desired period is enlarged and displayed, the background color of the sub-trend data in the enlarged display period is changed to the background color of the sub-trend data in another display period or the trend data in the normal display mode. Therefore, the enlarged trend data can be easily identified.

(Modification)
Next, a modification of the present embodiment will be described with reference to FIG. In the above-described embodiment, the ultrasonic diagnostic apparatus 100 including the analysis data display apparatus 7 that generates and displays trend data has been described. However, in this modification, a medical image diagnostic apparatus such as an ultrasonic diagnostic apparatus or a medical diagnosis is used. An analysis data display device independent of the device will be described. However, in the analysis data display device of FIG. 7, units having the same configurations and functions as those of the unit of the ultrasonic diagnostic apparatus 100 shown in FIG.

  In other words, the analysis data display device 200 shown in FIG. 7 stores a plurality of past analysis data obtained from a subject in advance, and further stores the latest analysis data obtained from the subject. The data storage unit 71, standard values of analysis data recommended by authoritative specialists and academic societies, and standard data indicating temporal changes in the upper and lower limits of the normal range centered on the standard values are stored in advance. A standard data storage unit 72, and past analysis data and latest analysis data obtained from the subject are superimposed on the standard data to generate normal display mode trend data (first trend data), and The trend data (second trend data) in the enlarged display mode is generated by enlarging the display scale of the desired period in the trend data in the normal display mode. And a display mode selection function 81 for selecting a normal display mode or an enlarged display mode, and a display unit 74 for displaying the generated trend data for the normal display mode and the trend data for the enlarged display mode. An enlarged display period setting function 82 for setting an enlarged display period for trend data in the normal display mode, an enlargement ratio setting function 83 for setting an enlargement ratio in the enlarged display mode, and a display method selection for selecting a display method in the enlarged display mode An input unit 8a having a function 84 and a control unit 9a for comprehensively controlling each unit described above are provided.

  According to the analysis data display apparatus having such a configuration, when observing temporal changes in analysis data collected from various medical image diagnosis apparatuses and medical diagnosis apparatuses as trend data, the display scale of the trend data in a desired period is set. By enlarging, it is possible to observe trend data and analysis data in a clinically important period with high accuracy. For this reason, it becomes possible to improve diagnostic efficiency and diagnostic accuracy.

  As mentioned above, although the Example of this invention and its modification were described, this invention is not limited to the above-mentioned Example and its modification, It can change and implement further. For example, in the above-described embodiment, two-dimensional B-mode image data is generated as ultrasonic data based on a reception signal obtained by sector scanning on the subject, and fetal growth evaluation is performed based on the ultrasonic data. Although the case where effective estimated fetal weight is collected as analysis data has been described, the present invention is not limited to this. For example, ultrasound data includes color Doppler image data, tissue Doppler image data, and blood flow information. The frequency spectrum data shown may be the B-mode image data, the color Doppler image data, or the like. Furthermore, these ultrasonic data may be collected by ultrasonic scanning such as linear scanning or convex scanning.

  In the above-described embodiment, the case where trend data is generated using “estimated fetal weight” as analysis data has been described. However, the present invention is not limited to this and can be obtained by measuring other calculation data or ultrasonic data. Alternatively, trend data may be generated by using measurement results such as “large head diameter” as analysis data.

  Furthermore, although generation and display of trend data for the purpose of fetal growth evaluation in the obstetric region have been described, trend data may be generated and displayed in regions such as the heart region and the abdominal digestive organ region.

  Moreover, although the case where the enlargement ratio in the above-described enlargement display mode is set in advance in the input unit 8 has been described, a suitable enlargement ratio can be obtained by continuously updating the enlargement ratio under observation of trend data in the enlargement display mode. You may decide.

  Furthermore, in the above-described embodiment, the case where the display scale of the trend data in the desired period is expanded has been described, but the display scale in this period may be reduced. In addition, although the case where the enlarged display period of the enlarged display mode is set by enlarging / reducing the region of interest set in the trend data of the normal display mode has been described, the time axis set in the trend data of the normal display mode is described. The enlarged display period may be set by moving one or more vertical slide bars in the time axis direction, and a predetermined value based on the collection date and time of ultrasonic data involved in the calculation of the latest analysis data The period may be automatically set as the enlarged display period.

  Furthermore, when the trend data in the enlarged display mode generated based on the second display method selection signal is updated to the trend data in the normal display mode, the horizontal axis and the vertical axis of the trend data in the enlarged display mode are independently updated. May be. According to this method, trend data suitable for observation purposes can be easily obtained.

  On the other hand, in the above-described modification, an analysis data display device that generates trend data based on past and latest analysis data obtained by a medical image diagnostic device or the like has been described. A function of measuring or calculating analysis data based on various medical data obtained from a device or the like may be further provided.

1 is a block diagram showing the overall configuration of an ultrasonic diagnostic apparatus according to an embodiment of the present invention. The block diagram which shows the specific structure of the transmission / reception part with which the ultrasonic diagnostic apparatus of the Example was provided, and the ultrasonic data generation part. The figure which shows the specific example of the trend data in the normal display mode of the Example. The figure which shows the specific example of the trend data in the enlarged display mode of the Example. The figure which shows the other specific example of the trend data in the enlarged display mode of the Example. The flowchart which shows the display procedure of the trend data in the normal display mode and expansion display mode of the Example. The block diagram which shows the structure of the analysis data display apparatus in the modification of the Example.

Explanation of symbols

2. Transmission / reception unit 21 ... Transmission unit 22 ... Reception unit 3 ... Ultrasonic probe 4 ... Ultrasound data generation unit 5 ... Ultrasonic data storage unit 6 ... Data analysis unit 7 ... Analysis data display device 71 ... Analysis data storage unit 72 ... Standard data storage unit 73 ... Trend data generation unit 74 ... Display unit 8, 8a ... Input unit 81 ... Display mode selection function 82 ... Enlarged display period setting function 83 ... Enlargement ratio setting function 84 ... Display method selection function 9 ... System control unit 9a ... Control unit 100 ... Ultrasonic diagnostic device 200 ... Analysis data display device

Claims (11)

In an ultrasonic diagnostic apparatus that generates trend data based on the analysis result of ultrasonic data collected from a subject,
Ultrasonic data generating means for generating ultrasonic data based on a reception signal obtained by transmitting and receiving ultrasonic waves to and from the subject;
Data analysis means for analyzing the ultrasonic data;
Trend data generating means for arranging a plurality of analysis data obtained by the data analysis means in correspondence with the generation date and time of the ultrasonic data and generating first trend data;
Display means for displaying the trend data,
The trend data generation means generates second trend data by expanding or reducing the display scale of the first trend data in a desired period based on a predetermined enlargement ratio, and is displayed on the display means. The ultrasonic diagnostic apparatus, wherein the first trend data is updated with the second trend data.   The trend data generation means generates the second trend data by superimposing the sub trend data generated by enlarging or reducing the display scale of the first trend data in the desired period on the first trend data. The ultrasonic diagnostic apparatus according to claim 1, wherein:   The trend data generation means combines the sub trend data generated by expanding or reducing the display scale of the first trend data in the desired period and the sub trend data in another period of the first trend data. The ultrasonic diagnostic apparatus according to claim 1, wherein the second trend data is generated.   The trend data generation means reduces or enlarges the display trend of the sub-trend data generated by enlarging or reducing the display scale of the first trend data in the desired period and the other trend period of the first trend data. The ultrasonic diagnostic apparatus according to claim 3, wherein the second trend data is generated by combining the sub-trend data generated in step S 4.   Standard data storage means for storing standard data for the analysis data, wherein the trend data generation means superimposes the analysis data on the standard data read from the standard data storage means, and the first trend data and the The ultrasonic diagnostic apparatus according to claim 1, wherein second trend data is generated.   An enlargement ratio setting means for setting an enlargement ratio of the display scale, wherein the trend data generating means enlarges or reduces the display scale of the first trend data in the desired period based on the enlargement ratio. The ultrasonic diagnostic apparatus according to claim 1, wherein the trend data is generated.   Display mode selection means for selecting a normal display mode and an enlarged display mode, wherein the trend data generation means is the first trend data or the first trend data in the normal display mode based on a selection signal supplied from the display mode selection means. The ultrasonic diagnostic apparatus according to claim 1, wherein the second trend data in the enlarged display mode is generated.   An enlarged display period setting unit that sets an enlarged display period for the desired period of the first trend data is provided, and the trend data generation unit is configured to set the first trend data of the first trend data set by the enlarged display period setting unit. The ultrasonic diagnostic apparatus according to claim 1, wherein the second trend data is generated by expanding or reducing a display scale in an enlarged display period.   2. The ultrasonic diagnosis according to claim 1, wherein the display means displays the second trend data so that a background color of trend data in the desired period is different from a background color of trend data in another period. apparatus.   The data analysis means measures the "child head large lateral diameter", "abdominal circumference" and "femur length" using the ultrasonic data of the subject generated by the ultrasonic data generation means, The ultrasonic diagnostic apparatus according to claim 1, wherein “estimated fetal weight” is calculated as the analysis data based on these measurement results. In an analysis data display device that displays temporal changes in analysis data collected from a subject as trend data,
Trend data generating means for arranging a plurality of analysis data obtained from the subject in correspondence with the collection date and generating first trend data;
Display means for displaying the trend data,
The trend data generation means generates second trend data by expanding or reducing the display scale of the first trend data in a desired period based on a predetermined enlargement ratio, and is displayed on the display means. An analysis data display device, wherein the first trend data is updated with the second trend data.

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