JP2017176271A - Presentation control apparatus, method, computer program, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suitably present information relating to a biological sound.SOLUTION: A presentation control apparatus comprises: a biological sound acquisition part (110) which acquires biological sound information relating to biological sound generated from a living body (200); and a control part (140) which controls presentation means (150) to dynamically present the state of an internal organ generating the biological sound, on the basis of the biological sound information. The presentation control apparatus is capable of presenting the state of an internal organ generating a biological sound, in a very easy-to-understand state.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a presentation control apparatus and method for presenting information related to a body sound such as a respiratory sound, and a technical field of a computer program and a recording medium.

  A body sound such as a breathing sound is used as one of indices when a doctor diagnoses a pathological condition of the body. In general, a doctor listens to a body sound by using a stethoscope. The stethoscope transmits a body sound collected by a chestpiece pressed against the body of a living body to a doctor's ear through a rubber tube or the like. Therefore, the doctor diagnoses the pathological condition of the living body by identifying the body sound with the ear (that is, distinguishing with the ear). For example, a doctor diagnoses a pathological condition of a living body by using the ear to distinguish whether or not the body sound contains an abnormal body sound. However, advanced skills (for example, advanced auscultation techniques) are required to distinguish body sounds with the ears.

  In view of this, there has been proposed a device that assists diagnosis of a disease state based on a body sound by a doctor by visualizing the body sound (see Patent Document 1). Specifically, Patent Document 1 proposes an apparatus for visualizing a respiratory sound that is an example of a biological sound.

JP 2005-27751 A

  In a medical field where patients are busy each day, for example, for the purpose of early detection, it is preferable to make the screen information output from the body sound visualization device simple and easy to understand.

  However, the apparatus disclosed in Patent Document 1 merely displays the breathing sound as it is on the time axis. Therefore, the device disclosed in Patent Document 1 has a room for improvement with respect to the display mode.

  Examples of problems to be solved by the present invention include the above. It is an object of the present invention to provide a presentation control apparatus and method, a computer program, and a recording medium that can suitably present information related to biological sounds.

  A presentation control device for solving the above-described problem is based on a biological sound acquisition unit that acquires biological sound information related to a biological sound emitted by a living body, and a state of an organ that generates the biological sound based on the biological sound information. And a control unit that dynamically presents the presentation means.

  The presentation control method for solving the above-described problem is based on the body sound information, based on the body sound information, the body sound obtaining step for obtaining body sound information related to the body sound emitted by the body, and the state of the organ generating the body sound. And a control step of dynamically presenting the presentation means.

  A computer program for solving the above-described problems moves a body sound acquisition step for acquiring body sound information related to a body sound emitted by a living body, and a state of an organ generating the body sound based on the body sound information. And causing the computer to execute a control process to be presented to the presenting means.

  The above-described computer program is recorded on a recording medium for solving the above problems.

  The effect | action and other gain of this invention are clarified from the form for implementing demonstrated below.

It is a block diagram which shows the structure of the respiratory sound monitoring apparatus which concerns on an Example. It is a flowchart which shows the flow of the dynamic display control by the respiratory sound monitoring apparatus which concerns on an Example. It is the schematic which shows an example of the acquisition method of a respiratory sound. It is a conceptual diagram which shows an example of the analysis process of a respiratory sound signal. It is a conceptual diagram which shows an example of the discrimination method of the inhalation period and the expiration period in a respiratory sound signal. It is a top view which shows the example of a display of a respiration display screen. It is a conceptual diagram (example 1) which shows an example of the dynamic display according to the intake air amount. It is a conceptual diagram (the 2) which shows an example of the dynamic display according to intake air quantity. It is a flowchart which shows the flow of left-right difference and abnormal sound display control by the respiratory sound monitoring apparatus which concerns on an Example. It is a top view which shows the example of a display of the acquisition location and order of a breathing sound. It is a top view which shows the example of a display of the left-right difference of a lung. It is a top view which shows the example of a display of an abnormal sound detection location.

  An embodiment according to the presentation control apparatus of the present invention will be described.

<1>
The presentation control apparatus according to the present embodiment dynamically changes a body sound acquisition unit that acquires body sound information related to a body sound emitted by a living body and a state of an organ generating the body sound based on the body sound information. And a control unit that presents the presentation means.

  In the presentation control apparatus according to the present embodiment, body sound information is acquired by the body sound acquisition unit during the operation. The body sound information is information related to a body sound (for example, a breathing sound) emitted by the living body, and is acquired as a body sound signal indicating a change of the body sound over time, for example.

  When the body sound is acquired, the control unit controls the presentation unit to present information based on the body sound information. Specifically, the control unit dynamically presents the state of an organ (for example, lung if it is a respiratory sound) that generates a biological sound based on the biological sound information. Here, “presentation” includes not only a mode of displaying an image on a screen and a voice guidance but also a mode of moving an organ model or the like.

  As described above, if the state of the organ that is generating the body sound can be dynamically presented, it becomes possible to present information on the body sound to a user such as a doctor in an extremely easy-to-understand manner.

<2>
In one aspect of the presentation control apparatus according to the present embodiment, the biological sound information is respiratory sound information related to respiratory sounds.

  According to this aspect, it is possible to suitably present the state of the organ (ie, lung) that generates the respiratory sound based on the respiratory sound information.

<3>
In the aspect of acquiring the respiratory sound information described above, the information processing unit further includes an information acquisition unit that acquires information for determining an expiration period and an inspiration period of the respiratory sound information, and the control unit generates the respiratory sound. The present lung state may be presented in different presentation modes in the expiration period and the inspiration period.

  In this case, the state of the lung that generates the breathing sound is presented in different presentation modes in the expiration period and the inspiration period. Therefore, the expiration period information and the inhalation period information can be easily discriminated, and a living body diagnosis or the like can be performed more suitably.

<4>
In the aspect which acquires the respiratory sound information mentioned above, the said control part may show the state of the lung which is generating the said respiratory sound by the color which is different by the said expiration period and the said inhalation period.

  In this case, the state of the lung generating the breathing sound is presented in different colors in the expiration period and the inspiration period. For example, the lung state during the expiration period is presented in blue, and the lung state during the inspiration period is presented in red. If the lung state is presented in this way, it is possible to determine the expiration period information and the inspiration period information very easily.

<5>
In the aspect which acquires the respiratory sound information mentioned above, the said control part is made to show the state of the lung which is generating the said respiratory sound so that the color shade may be changed according to the gas amount contained in the said lung.

  In this case, the state of the lung generating the breathing sound is presented so that the color shade changes according to the amount of gas contained in the lung. For example, a dark color is presented when the amount of gas contained in the lung is large, and a light color is presented when the amount of gas contained in the lung is small. If the lung state is presented in this way, the amount of gas contained in the lung can be determined very easily.

<6>
In the aspect which acquires the respiratory sound information mentioned above, the said biological sound acquisition part acquires the said respiratory sound information from the several places of the said biological body, and the said control part calculates the left-right difference of the lung which is generating the said respiratory sound. Let them present.

  In this case, based on a plurality of pieces of respiratory sound information acquired from a plurality of locations of the living body, a left-right difference between the lungs that generate the respiratory sounds (that is, a difference in state between the right lung and the left lung) is presented. Is done. Since an abnormality may occur in only one of the left and right lungs, it is possible to suitably know the lung state by presenting the left-right difference.

<7>
In the aspect which acquires the respiratory sound information mentioned above, the said biological sound acquisition part acquires the said respiratory sound information from the multiple places of the said biological body, and the said control part is the abnormal sound of the lung which is generating the said respiratory sound. The point where the volume is maximum is presented.

  In this case, an abnormal sound included in the respiratory sound is detected based on a plurality of respiratory sound information acquired from a plurality of locations of the living body, and a location where the volume of the abnormal sound is maximum is presented. For this reason, it is possible to suitably determine in which part of the lung the abnormal sound is generated.

<8>
In another aspect of the presentation control apparatus according to the present embodiment, the control unit presents a location where the biological sound information in the living body should be acquired in addition to the state of the organ generating the biological sound.

  According to this aspect, since the location where the body sound information in the living body should be obtained is presented, it is possible to suitably obtain the body sound. In addition, there may be a plurality of places where the body sound information should be acquired, in which case all may be presented at once, and whenever body sound information is obtained at the presenting place, Different locations may be presented sequentially. For example, when a body sound is acquired using a stethoscope, the location to which the stethoscope is to be applied is presented together with the order. In this case, a doctor or the like may apply a stethoscope to the presented multiple locations in order.

<9>
The presentation control method according to the present embodiment is based on a body sound acquisition step of acquiring body sound information related to body sounds emitted by a living body, and a state of an organ generating the body sounds based on the body sound information. And a control step for causing the presenting means to present.

  According to the presentation control method according to the present embodiment, it is possible to present information related to body sound in an extremely easy-to-understand manner, like the presentation control device according to the present embodiment described above.

  Note that the presentation control method according to the present embodiment can also adopt various aspects similar to the various aspects of the presentation control apparatus according to the present embodiment described above.

<10>
The computer program according to the present embodiment dynamically determines a body sound acquisition step for acquiring body sound information related to a body sound emitted by a living body, and a state of an organ generating the body sound based on the body sound information. And causing the computer to execute a control process to be presented by the presenting means.

  According to the computer program according to the present embodiment, it is possible to cause the computer to execute the same processing as the presentation control method according to the above-described embodiment, and thus it is possible to present information related to biological sounds in an extremely easy-to-understand manner. It becomes.

  Note that the computer program according to the present embodiment can also adopt various aspects similar to the various aspects of the presentation control apparatus according to the present embodiment described above.

<11>
The recording medium according to the present embodiment records the above-described computer program.

  According to the recording medium according to the present embodiment, by causing the computer program described above to be executed by a computer, it is possible to present information related to biological sounds in an extremely easy-to-understand manner.

  The operation and other gains of the presentation control apparatus and the presentation control method, the computer program, and the recording medium according to the present embodiment will be described in more detail in the following examples.

  Hereinafter, embodiments of a presentation control apparatus and method, a computer program, and a recording medium will be described in detail with reference to the drawings. Hereinafter, a case where the presentation control apparatus is applied to a respiratory sound monitoring apparatus will be described as an example.

<Device configuration>
First, the configuration of the respiratory sound monitoring apparatus according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram illustrating the configuration of the respiratory sound monitoring apparatus according to the embodiment.

  In FIG. 1, the respiratory sound monitoring apparatus 10 according to the present embodiment includes a signal sound acquisition unit 110, a signal analysis unit 120, an expiration inhalation determination unit 130, a display control unit 140, and a display unit 150. Has been.

  The signal sound acquisition unit 110 includes, for example, an electronic stethoscope, and is configured to be able to acquire a respiratory sound signal indicating a respiratory sound emitted from a living body. The respiratory sound signal acquired by the signal sound acquisition unit 110 is output to the signal analysis unit 120 and the expiration inhalation determination unit 130, respectively. The signal sound acquisition unit 110 is a specific example of “biological sound acquisition unit”, and the respiratory sound signal is a specific example of “biological sound information”.

  The signal analysis unit 120 is configured to be able to execute various types of analysis processing (for example, spectrum analysis processing) on the respiratory sound signal input from the signal sound acquisition unit 110. The analysis result of the signal analysis unit 120 is output to the display control unit 140.

  The expiration inhalation determination unit 130 is configured to be able to determine the inspiration period and the expiration period of the respiratory sound signal input from the signal sound acquisition unit 110, respectively. The determination result of the exhalation inhalation determination unit 130 is configured to be output to the display control unit 140.

  The display control unit 140 performs control for displaying the lung state of the living body based on the analysis result of the signal analysis unit 120 and the determination result of the expiration inhalation determination unit 130. Specifically, the display control unit 140 determines a display mode related to the lung state, and outputs a control signal for performing image display in the determined display mode to the display unit 150. The display control unit 140 is a specific example of a “control unit”.

  The display unit 150 is configured as a monitor such as a liquid crystal display, for example, and displays an image corresponding to a control signal input from the display control unit 140. The display unit 150 is a specific example of “presentation means”.

  In the present embodiment, an apparatus for displaying an image of the lung state will be described, but the lung state may be presented using a method other than an image. Specifically, a method of moving a lung model may be used as a method of presenting the lung state.

<Dynamic display control>
Next, dynamic display control performed by the respiratory sound monitoring apparatus 10 according to the present embodiment will be described with reference to FIGS. FIG. 2 is a flowchart illustrating a flow of dynamic display control by the respiratory sound monitoring apparatus according to the embodiment, and FIG. 3 is a schematic diagram illustrating an example of a respiratory sound acquisition method. FIG. 4 is a conceptual diagram illustrating an example of analysis processing of a respiratory sound signal, and FIG. 5 is a conceptual diagram illustrating an example of a method for determining an inspiratory period and an expiratory period in the respiratory sound signal.

  In FIG. 2, during the operation of the respiratory sound monitoring apparatus 10 according to the present embodiment, first, a respiratory sound signal indicating a biological respiratory sound is acquired by the signal acquisition unit 110 (step S <b> 101).

  As shown in FIG. 3, the respiratory sound signal is acquired by bringing the signal acquisition unit 110 into contact with the living body 200. The respiratory sound signal acquired by the signal acquisition unit 110 is output to the apparatus main body 50 including the signal analysis unit 120, the expiration inhalation determination unit 130, the display control unit 140, and the display unit 150. As shown in the figure, the respiratory sound signal is acquired as a signal indicating a temporal change in the amplitude (intensity) of the respiratory sound.

  Returning to FIG. 2, when the respiratory sound signal is acquired, the expiration inhalation determination unit 120 determines the inspiration period and the expiration period (step S102). That is, it is determined which part of the respiratory sound signal corresponds to the inspiration period and which part corresponds to the expiration period.

  As shown in FIG. 5, the inspiratory maximum value exists in the inspiratory period, and the expiratory maximum value exists in the expiratory period. Since the average respiratory sound period is about 4 to 5 seconds, for example, threshold processing is performed using data obtained by averaging every 10 msec, and the inspiratory maximum value, the expiratory maximum value, and the amplitude before the maximum value, respectively. If an increase change point is detected, it is possible to determine the inspiration period and the expiration period. Note that other existing techniques can be applied to the determination of the inspiratory period and the expiratory period.

  Returning to FIG. 2 again, in parallel with or before or after the expiration inhalation determination described above, the signal analysis unit 120 executes the analysis process of the respiratory sound signal (step S103). That is, various analysis processes for obtaining information about the lung from the respiratory sound signal are executed.

  As shown in FIG. 4, in the signal analysis unit 120, for example, spectrum analysis (time frequency analysis) is executed. According to such an analysis, it is possible to obtain a spectrum indicating a change with time of the frequency component included in the respiratory sound. From the spectrum, as shown in the figure, it is possible to detect an abnormal sound (for example, a whistle sound, a haircut sound, a water bubble sound, an analogy sound, etc.) included in the breathing sound.

Returning to FIG. 2 again, when the exhalation inhalation determination and analysis process is completed, the display unit control unit 140 determines a specific display mode for displaying the state of the lung that emits a breathing sound (step S104). Then, display according to the display mode determined by the display control unit 140 is performed on the display unit 150 (step S105).
Hereinafter, specific display examples based on the dynamic display control described above will be described in detail with reference to FIGS. FIG. 6 is a plan view showing a display example of the respiration display screen. 7 and 8 are conceptual diagrams showing examples of dynamic display corresponding to the intake air amount.

  As shown in FIG. 6, an image indicating the lung state of the living body 200 is displayed on the display unit 150. In particular, in the respiratory sound monitoring apparatus 10 according to the present embodiment, such an image is dynamically displayed. That is, an image showing the lungs is displayed so as to move according to the respiratory sound signal.

  As shown in FIG. 7, the lung image is displayed so that the size of the lung changes according to the amount of air contained in the lung (that is, the amount of inspiration and the amount of expiration). Specifically, at the start of the inspiration period, the amount of inspiration is minimized, so that the lungs are displayed small. Thereafter, when the inspiration period elapses to some extent and the inspiration amount becomes medium, the lung is displayed as having a medium size. When the amount of inspiration is maximized, the lungs are displayed larger. That is, during the inhalation period, display is performed so that the lungs gradually expand. On the other hand, when the inspiration period ends and the expiration period starts, the amount of air contained in the lungs decreases. For this reason, during the expiration period, an image is displayed such that the lungs gradually become deflated.

  As shown in FIG. 8, in addition to the size of the lung, the color and shading of the lung may be changed. For example, the lungs may be displayed in different colors during the inspiratory period and the expiratory period, and may be displayed so that the color shade changes according to the amount of inspiration.

  In the example shown in the figure, the lungs are displayed in red during the inspiration period, and the lungs are displayed in blue during the expiration period. Further, when the intake air amount is small, it is displayed in a light color, and when the intake air amount is large, it is displayed in a dark color. Thus, by changing the color and its density, it becomes possible to more easily determine the state of the lung.

  From the amount of air contained in the lungs, for example, it is possible to determine an apnea state (a state in which the chest appears to be moving but no air is actually sent to the lungs).

<Left-right difference and abnormal sound display control>
Next, the left / right difference and abnormal sound display control performed by the respiratory sound monitoring apparatus 10 according to the present embodiment will be described with reference to FIGS. 9 to 12. FIG. 9 is a flowchart illustrating a flow of left-right difference and abnormal sound display control by the respiratory sound monitoring apparatus according to the embodiment, and FIG. 10 is a plan view illustrating a display example of an acquisition location and order of respiratory sounds. FIG. 11 is a plan view showing a display example of the left-right difference between lungs, and FIG. 12 is a plan view showing a display example of abnormal sound detection locations.

  In FIG. 9, the respiratory sound monitoring apparatus 10 shows the left-right difference of the lungs (difference in the magnitude of respiration between the left lung and the right lung) and abnormal sound detection locations together with the dynamic display described above. Control is performed.

  In the left-right difference and abnormal sound display control, it is required to acquire biological sounds from a plurality of locations of the biological body 200. For this reason, when the control is started, first, a location where a breathing sound should be acquired is displayed on the display unit 150 (step S201).

  As shown in FIG. 10, an example of a place where a breathing sound should be acquired is indicated by a mark (circle) displayed on a living body image. Note that the numbers in the mark may be the order in which breathing sounds are acquired. A doctor or the like who acquires the breathing sound acquires the breathing sound from the living body 200 in this order. In addition, a mark is highlighted about the location which should acquire the respiratory sound at this time (refer 2nd number in a figure).

  Returning to FIG. 9, when a respiratory sound signal is acquired at the displayed position (step S202), an inspiratory maximum value of the respiratory sound is detected (step S203). That is, the peak value of the amplitude during the intake period as shown in FIG. 5 is detected. An abnormal sound is also detected from the respiratory sound signal (step S204). That is, the abnormal sound included in the respiratory sound is detected by the analysis processing as shown in FIG.

  When the detection of the inspiratory maximum value and the abnormal sound is completed, it is determined whether or not respiratory sound signals have been acquired at all locations where the respiratory sound should be acquired (step S205). When the breathing sound has not been acquired at all locations (step S205: NO), the process at step S201 is repeated for the next acquisition location.

  On the other hand, if breathing sounds are acquired at all locations (step S205: YES), information on the local maximum values of intake air at each location, the amount of air inflow into the lungs (respiratory sound amplitude level from the start of inspiration to the end of inspiration) The difference between the left and right lungs is calculated by comparing the reference information data such as the integral value of the absolute value (step S206). Further, the maximum volume of the abnormal sound is detected by comparing the volume (amplitude) of the abnormal sound at each position (step S207). Then, the calculated left-right difference and the maximum portion of the abnormal sound are displayed on the display unit 150 (step S208).

  As shown in FIG. 11, the left-right difference between the lungs is displayed by changing the size of the left lung and the right lung. In the example shown in the figure, the right lung (left side in the figure) is displayed smaller than the left lung (right side in the figure). This indicates that the intake maximum value, air inflow amount, etc. of the right lung are smaller than the intake maximum value, air inflow amount, etc. of the left lung. Thus, when there is a left-right difference between the lungs, for example, a diagnosis can be made that a hole is formed in one of the lungs.

  As shown in FIG. 12, the abnormal sound maximum location is displayed on the screen as an abnormal sound occurrence location. Thus, if the location where the abnormal sound is generated can be clearly displayed, it is possible to more accurately diagnose the medical condition of the living body 200.

  In the example described above, the case where one result is displayed using the detection results at a plurality of locations has been described. However, the detection results at each of the plurality of locations may be displayed separately.

<Effect of Example>
As described above, according to the respiratory sound monitoring apparatus 10 according to the present embodiment, it is possible to display the lung state in an easily understandable manner based on the respiratory sound information acquired from the living body 200. . Thereby, for example, diagnosis at a medical site can be performed very suitably.

  In the present embodiment, an apparatus for indicating a lung state that emits a breathing sound has been described. However, a similar display can be realized as long as the organ emits a sound.

  The present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit or idea of the invention that can be read from the claims and the entire specification, and includes such changes and methods. Computer programs and recording media are also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Respiration sound monitoring apparatus 50 Apparatus main body part 110 Signal acquisition part 120 Signal analysis part 130 Exhalation inhalation determination part 140 Display control part 150 Display part 200 Living body

Claims (11)

A biological sound acquisition unit that acquires biological sound information related to the biological sound emitted by the biological body;
A presentation control device, comprising: a control unit that dynamically presents the state of the organ generating the body sound to the presentation unit based on the body sound information.   The presentation control apparatus according to claim 1, wherein the biological sound information is respiratory sound information related to a respiratory sound. An information acquisition unit for acquiring information for determining an expiration period and an inspiration period of the breathing sound information;
The presentation control apparatus according to claim 2, wherein the control unit is configured to present the state of the lung that generates the breathing sound in a presentation mode that is different between the expiration period and the inspiration period.   The presentation control apparatus according to claim 3, wherein the controller causes the state of the lung that generates the breathing sound to be presented in different colors between the expiration period and the inspiration period.   5. The control unit according to claim 2, wherein the control unit causes the state of the lung that generates the breathing sound to be presented so as to change the color shade according to the amount of gas contained in the lung. The presentation control apparatus according to claim 1. The biological sound acquisition unit acquires the respiratory sound information from a plurality of locations of the biological body,
The presentation control apparatus according to any one of claims 2 to 5, wherein the control unit presents a left-right difference between lungs that generate the breathing sound. The biological sound acquisition unit acquires the respiratory sound information from a plurality of locations of the biological body,
The presentation control device according to any one of claims 2 to 6, wherein the control unit presents a location where the volume of the abnormal sound of the lung generating the breathing sound is maximized.   8. The control unit according to claim 1, wherein, in addition to a state of an organ that generates the body sound, the control unit presents a location where the body sound information is to be acquired in the body. The presentation control device described in 1. A body sound acquisition step of acquiring body sound information about the body sound emitted by the body;
And a control step of dynamically presenting the state of the organ generating the body sound to the presentation means based on the body sound information. A body sound acquisition step of acquiring body sound information about the body sound emitted by the body;
A computer program causing a computer to execute a control step of dynamically presenting a state of an organ generating the body sound to a presentation unit based on the body sound information.   A recording medium on which the computer program according to claim 10 is recorded.