JP5157918B2 - Moving image display device and program - Google Patents

Description

  The present invention relates to a moving image display device and a program, and more particularly to a moving image display device and a program capable of displaying a periodic movement of a predetermined part in a living body.

  In the medical field, various examinations and diagnoses are performed by photographing an affected part included in a built-in structure or a skeleton using an X-ray or the like. In recent years, it has become possible to relatively easily acquire a moving image that captures the motion of an affected area using X-rays or the like by applying digital technology. For example, in recent years, with the advent of Flat Panel Detector, it has become possible to capture an X-ray moving image without distortion. By the X-ray moving image imaging, it is possible to analyze and diagnose the function / dynamics of an organ or the like that could not be captured in a still image.

  An example of an organ that is effective for diagnosing the movement of the affected area is, for example, a lung whose shape changes greatly due to respiration. For example, the lungs tend to have significantly reduced movements of expansion and contraction in areas with disease. For this reason, the doctor can make a diagnosis by recognizing the behavior of the lung through the moving image.

  Note that Patent Literature 1 and Patent Literature 2 exist as prior art relating to devices used for diagnostic purposes.

  Patent Document 1 proposes an image display device that compares images of the same time phase among time-series images taken separately for the same part in a living body. On the other hand, Patent Document 2 proposes an image processing device that takes a difference in phase with respect to a respiratory moving image captured during a plurality of respiratory cycles separated over time.

JP-A-5-56933 JP 2005-151099 A

  By the way, for example, a moving image of a predetermined part that periodically moves in a living body, such as a lung that periodically moves with breathing, is displayed for diagnostic purposes, and a doctor or the like can easily determine whether or not there is a disease through the display. A moving image display device that can be grasped is desired.

  Therefore, the present invention provides a moving image display device that allows a doctor or the like to easily grasp the presence or absence of a disease through a reproduction display of a moving image that captures a predetermined part that performs a periodic operation in a living body, and the processing The purpose is to provide a program that makes it possible.

In order to achieve the above object, a moving image display apparatus according to claim 1 of the present invention is composed of a plurality of frames imaged in time series that capture periodic movements of a predetermined part of a living body. A moving image data acquisition unit that acquires moving image data, and a periodic distance of the predetermined part, the moving image data is a minimum distance between two feature points in each frame constituting the moving image data from a first frame group of the maximum value and becomes period, a second frame group periods the distance is the minimum value from the maximum value, a dividing portion for dividing, by synchronizing the start playback, the first A reproduction display unit configured to display the reproduction image of one frame group and the reproduction image of the second frame group in a comparable manner;
The moving image display device according to claim 2 of the present invention acquires moving image data including a plurality of frames that are captured in time series and captures a periodic movement of a predetermined part in a living body. In the data acquisition unit and the periodic movement of the predetermined part, the moving image data is converted into the first frame group of the first half cycle related to the one-way movement of the predetermined part, and the one direction of the predetermined part. And the second frame group of the second half cycle related to the movement in the reverse direction opposite to the first frame group in synchronization with the dividing unit and the playback start time, and the reproduced image of the first frame group and the second frame A reproduction display unit that displays the reproduction images of the groups in a comparable manner;

The moving image display device according to claim 3 of the present invention is the moving image display device according to claim 1 or 2 , wherein the reproduction display unit includes the first frame group or the first frame group. The second frame group is reproduced in the direction opposite to the time series of the moving image data imaging.

The moving picture display apparatus according to claim 4 of the present invention is a moving picture display apparatus according to any one of claims 1 to 3, wherein the reproduction display unit, playback ends at the same time As described above, the reproduction time adjustment is performed on at least one of the reproduction image of the first frame group and the reproduction image of the second frame group.

The moving image display device according to claim 5 of the present invention is the moving image display device according to claim 1 or 2 , wherein the predetermined part is a lung field region, The second frame group is composed of a plurality of frames imaged during the breathing dynamic expiration period.

The moving image display device according to claim 6 of the present invention is the moving image display device according to claim 1 or 2 , wherein each of the regions of the predetermined part is extracted from the moving image data. In the target region extraction unit to be extracted, in each extracted region of the predetermined part, a desired position is defined as a feature point, and by capturing the movement of the feature point in the moving image data, And a phase extraction unit for obtaining the periodic movement.

A program according to a seventh aspect of the present invention is executed by a computer, thereby causing the computer to function as the moving image display device according to any one of the first to sixth aspects.

According to the moving image display apparatus according to claim 1 and claim 2 of the present invention and the program according to claim 7 , the first half of a predetermined part that performs periodic movement in the living body through the reproduced and displayed moving image. The difference between the movement for the period and the movement for the latter period can be easily recognized. Therefore, a doctor or the like can easily grasp the presence or absence of a disease (such as an abnormality in a predetermined part) caused by the difference or the like.

In addition, the moving image display device according to claim 3 of the present invention displays the first frame group and the second frame group in a comparable manner in a state in which the directions of movement of predetermined portions are matched. .

  Therefore, doctors can easily diagnose diseases that are important to judge the difference between the movement of the first half cycle and the movement of the second half cycle of the predetermined part that performs periodic movement according to the direction of movement. It becomes like this.

According to a fourth aspect of the present invention, there is provided a moving image display apparatus that performs a reproduction time adjustment process in which the reproduction time of the first frame group is the same as the reproduction time of the second frame group. Then, the reproduced image of the first frame group and the reproduced image of the second frame group after the adjustment of the reproduction time are displayed so as to be comparable.

  Therefore, for example, it is important to compare the time of the movement of the first half cycle and the time of the second half of the predetermined part that performs periodic movement, and compare the two to detect the difference between the two. This makes it easier for doctors and others to see them.

Further, in the moving image display device according to claim 5 of the present invention, the predetermined part is a lung field region, and the first frame group is configured by a frame in which an inspiratory period of respiratory dynamics is imaged. The frame group is composed of frames obtained by imaging the expiration period of respiratory dynamics.

  Therefore, by comparing the reproduced image during the inspiratory period and the reproduced image during the expiratory period, it becomes easy to diagnose the type of chronic lung disease and grasp the severity.

The moving image display device according to claim 6 of the present invention sets a feature point at a desired position in the extracted predetermined part, and captures the movement of the characteristic point, thereby obtaining a cycle of the predetermined part. Looking for movement.

  Therefore, the process for obtaining the periodic movement of a predetermined part in the living body can be performed quickly and lightly without using other instruments.

It is a block diagram which shows the function structure of the moving image display apparatus which concerns on this invention. 6 is a diagram illustrating a flow of operations of the moving image display apparatus according to Embodiment 1. FIG. It is a figure which shows the mode of lung field area | region extraction. It is a figure which shows the mode of the determination of a feature point. It is a data diagram which illustrates the periodic motion of a lung field area. It is a figure which illustrates the periodic motion of a lung field area. 6 is a diagram for explaining a reproduction display operation of the moving image display apparatus according to Embodiment 1. FIG. 10 is a diagram for explaining a reproduction display operation of the moving image display apparatus according to Embodiment 2. FIG. FIG. 10 is a diagram for explaining a reproduction display operation of the moving image display apparatus according to the third embodiment. It is a figure for demonstrating the method of a reproduction time adjustment process.

  Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.

<Embodiment 1>
In the present embodiment, moving image data that captures the movement of a predetermined part in a living body that performs a periodic operation is divided, and the divided moving image data are reproduced and displayed in a comparable manner.

  FIG. 1 is a functional block diagram illustrating the configuration of a moving image display apparatus according to the present embodiment.

  As shown in FIG. 1, the moving image display apparatus 100 includes a moving image data holding unit 10, a moving image data acquisition unit 20, a control unit 30, and a reproduction display unit 40. The control unit 30 includes a target area extraction unit 31, a phase extraction unit 32, and a division unit 33.

  The data holding unit 10 configured by a hard disk holds captured moving image data, an imaging rate, a processing result, and the like. The moving image data acquisition unit 20 acquires information stored in the data holding unit 10 such as moving image data. The control unit 30 controls the operation of the moving image display apparatus 100. The reproduction display unit 40 reproduces moving image data and displays the reproduction image. The reproduction display unit 40 can also display a predetermined graph or the like.

  The target area extraction unit 31 extracts a target area (such as a lung field area) from each frame constituting the moving image data. The phase extraction unit 32 identifies and obtains the periodic movement of the predetermined part extracted by the target region extraction unit 31. Further, the dividing unit 33 obtains frame dividing points in consecutive frames constituting the moving image data, and divides the moving image data into two frame groups starting from the dividing points.

  FIG. 2 is a diagram showing an operation flow of the moving image display apparatus 100 according to the present embodiment. The operation of the moving image display apparatus 100 will be described with reference to FIG. In the present embodiment, an operation will be described in which X-ray moving image data obtained by imaging the respiratory dynamics of the lung field is divided, and the divided moving image data are reproduced and displayed in a comparable manner.

  First, the moving image data acquisition unit 20 acquires moving image data capturing the periodic respiratory dynamics of a lung field region (which can be grasped as a predetermined part) in the living body from the moving image data holding unit 10 (FIG. 2). Step S1). The moving image data is composed of a plurality of frames obtained by imaging the same living body in a time series for a predetermined period.

  Here, as an apparatus capable of capturing the periodic motion, in addition to the X-ray moving image imaging apparatus, for example, an ultrasonic imaging apparatus, a CT (Computed Tomography) scanning apparatus, and an MRI (Magnetic Resonance Imaging): nuclear magnetic resonance image Method).

  Next, the target area extraction unit 31 extracts lung field areas from each frame constituting the moving image data (step S2 in FIG. 2). As a method for extracting the lung field region, for example, techniques disclosed in Japanese Patent Laid-Open Nos. 63-240832 and 2-250180 can be employed. FIG. 3 is a diagram illustrating how the lung field area Ha is extracted in one frame F. FIG.

  Next, by an external operation by the user, the phase extraction unit 32 defines (determines) a desired position as a feature point in each extracted lung field region Ha (step S3 in FIG. 2). Here, in the present embodiment, as shown in FIG. 4, the highest point (pulmonary apex) of the lung field region Ha on the left side of the drawing and the midpoint of the diaphragm portion on the left side of the drawing are determined as the feature points T, respectively. The diaphragm is in contact with the lower portion of the lung field region Ha.

  Next, the phase extraction unit 32 obtains the periodic motion of the position determined as the feature point of the lung field area Ha by capturing the motion of the feature point T in each frame of the moving image data (step S4 in FIG. 2). . In other words, the phase extraction unit 32 obtains a periodic movement of the lung field region Ha in the moving image data by capturing the movement of the feature point T in each frame constituting the moving image data.

  The phase extraction unit 32 captures a change in the distance between two feature points T determined in each extracted lung field area Ha in each frame of the moving image data. The change in the distance is a periodic change. In the present embodiment, the respiratory phase of the periodic movement of the lung field region Ha is determined by the periodic change of the distance.

  As an example of a method for determining the respiratory phase of the periodic motion of the lung field Ha, “Evaluation of Pulmonary Function Using Breathing Chest Radiography With a Dynamic Flat Panel Detector.” There is.

  FIG. 5 shows data obtained by converting time series changes in distance between feature points T in moving image data. In FIG. 5, the vertical axis indicates the amount of change in the distance between the feature points T, and the minimum value of the amount of change is zero. The vertical axis is referred to as a periodic motion displacement amount. The horizontal axis indicates time. Here, in FIG. 5, only data for one cycle is shown.

  FIG. 5 can be understood as a periodic movement of the lung field area Ha in the moving image data, with the period from time A to time C when the displacement changes from minimum → maximum → minimum as one period. In FIG. 5, time B is a phase when the amount of displacement of the periodic motion is the maximum value.

  FIG. 6 shows an example of moving image data that captures the periodic movement of the lung field area Ha for one cycle shown in FIG. The moving image data is composed of seven frames arranged in time series in the order of imaging.

  In FIG. 6, the leftmost frame F1 is a frame at time A in FIG. In FIG. 6, the third frame F3 from the left is the frame at time B in FIG. In FIG. 6, the rightmost frame F7 is the frame at time C in FIG.

  Next, the dividing unit 33 divides moving image data including a plurality of frames arranged in time series in the order of imaging into a first frame group and a second frame group (step S5 in FIG. 2). ). Here, the first frame group is composed of a plurality of frames in a period in which the displacement amount becomes the maximum value from the minimum value in the periodic movement of the lung field region Ha. The second frame group is composed of a plurality of frames in a period in which the displacement amount is from the maximum value to the minimum value in the periodic movement of the lung field region Ha.

  In the example shown in FIGS. 5 and 6, the dividing unit 33 detects a time B at which the displacement amount becomes the maximum value in the periodic movement of the lung field area Ha for one cycle in which the displacement amount is minimum → maximum → minimum. . Then, the dividing unit 33 divides the moving image data shown in FIG. By this division, the frame group from time A to time B is determined as the first frame group, and the frame group from time B to time C is determined as the second frame group. Note that the frame F3 at time B is located at the end in the time series in the order of imaging in the first frame group, and located at the beginning in the time series in the order of imaging in the second frame group.

  Here, in the present embodiment, the respiratory dynamics of the lung field region Ha is described. Therefore, it can be seen that the first frame group is composed of a plurality of frames in which the inspiration period of the respiratory dynamics is imaged. On the other hand, it can be seen that the second frame group is composed of a plurality of frames obtained by imaging the expiration period of the respiratory dynamics.

  Next, the playback display unit 40 synchronizes the playback start time and displays the playback image of the first frame group and the playback image of the second frame group in a comparable manner (step S6 in FIG. 2). As shown in FIG. 7, the playback display unit 40 simultaneously displays the playback image of the first frame group and the playback image of the second frame group on one screen. Here, as shown in FIG. 7, the display unit 40 synchronizes the playback start time in both playback images. The upper part of FIG. 7 is a first frame group that images the inspiration period, and the lower part of FIG. 7 is a second frame group that images the expiration period.

  Here, in the present embodiment, each frame of the first frame group and each frame of the second frame group are each reproduced in a time-series order of imaging order. In the present embodiment, the playback time is not adjusted. Therefore, in the example of FIG. 7, since the inspiration period is shorter than the expiration period, the reproduction of the first frame group ends before the reproduction of the second frame group.

  As described above, the moving image display apparatus 100 according to the present embodiment has a displacement amount from a minimum value to a maximum value in moving image data including a plurality of frames capturing a periodic movement of a predetermined part of a living body. It is divided into a first frame group in a period and a second frame group in a period in which the displacement amount is from a maximum value to a minimum value. Then, the moving image display device 100 synchronizes the playback start time and displays the playback image of the first frame group and the playback image of the second frame group in a comparable manner.

  Through the moving image data to be reproduced and displayed, it is possible to easily recognize the difference between the movement of the first half cycle and the movement of the second half cycle of a predetermined part that performs periodic movement in the living body. Therefore, a doctor or the like can easily grasp the presence or absence of a disease (such as an abnormality in a predetermined part) caused by the difference or the like.

  Further, in the present embodiment, the predetermined part is the lung field area Ha, the first frame group is composed of frames in which the respiratory dynamics inspiration period is imaged, and the second frame group is the respiratory dynamics exhalation. It consists of a frame that captures the period.

  Therefore, by comparing the reproduced image during the inspiratory period and the reproduced image during the expiratory period, it becomes easy to diagnose the type of chronic lung disease and grasp the severity. For example, even if the overall ability of breathing is normal, if there is an abnormality in the expiratory ability, it is diagnosed as an obstructive disorder. Diagnosis of obstructive disorder is facilitated.

  In addition, the moving image display apparatus 100 according to the present embodiment sets a feature point T at a desired position in the extracted lung field region Ha, and captures the movement of the feature point T, thereby detecting the lung field region Ha. Seeking periodic movement.

  Therefore, the process for obtaining the periodic movement of the lung field area Ha can be performed quickly and lightly without using other instruments.

<Embodiment 2>
In the first embodiment, moving image data including a plurality of frames arranged in time series is divided into two frame groups with reference to a frame at a time at which the displacement amount of the lung field region Ha is maximum. Each frame group was reproduced and displayed while maintaining the time-series direction of the imaging order (see FIG. 7).

  On the other hand, in the moving image display apparatus 100 according to the present embodiment, the reproduction display unit 40 displays the first frame group or the second frame group in a direction opposite to the time series of moving image data imaging. It is characterized by playing. The functional block configuration of the moving image display apparatus 100 according to the present embodiment is the same as the functional block configuration of the moving image display apparatus 100 described in the first embodiment (see FIG. 1). As will be described below, the two embodiments differ in terms of the operation of whether or not the playback display unit 40 reverses the playback direction.

  After step S5 of FIG. 2 with respect to FIG. 6, in the present embodiment, when each frame group is reproduced and displayed, the reproduction display unit 40 displays the first frame group or the second frame group in time series. To play the arranged frames from the opposite direction. In other words, in either the first frame group or the second frame group, playback is started from the last frame arranged in time series in the imaging order, and is reproduced in the first frame arranged in the imaging time series. End. An example of the state of reproduction display according to the present embodiment is shown in FIG.

  In the example of FIG. 8, each frame in the intake period (that is, each frame constituting the first frame group) is reproduced and displayed in time series in the order of imaging. On the other hand, each frame in the expiration period (that is, each frame constituting the second frame group) is reproduced and displayed in time series in reverse to the imaging order. That is, in the second frame group, the reproduction starts from the last frame F7 in FIG. 6, and the reproduction ends at the frame F3 that is the starting point of the division and becomes the starting point of the second frame group.

  Also in the present embodiment, as shown in FIG. 8, the playback display unit 40 synchronizes the playback start time to display the playback image of the first frame group and the playback image of the second frame group. Display as comparable.

  Here, in this embodiment, the playback time adjustment is not performed. Therefore, in the example of FIG. 8, since the inspiration period is shorter than the expiration period, the reproduction of the first frame group ends before the reproduction of the second frame group.

  As described above, in the moving image display apparatus 100 according to the present embodiment, the first frame group and the second frame group are combined with the movement direction of the predetermined part (lung field region Ha) being matched. It is displayed so that it can be compared.

    Therefore, doctors can easily diagnose diseases that are important to judge the difference between the movement of the first half cycle and the movement of the second half cycle of the predetermined part that performs periodic movement according to the direction of movement. It becomes like this.

<Embodiment 3>
In step S5 of FIG. 2 with respect to FIG. 6, in the moving image display apparatus 100 according to the present embodiment, the playback display unit 40 displays the playback image of the first frame group and the first frame so that playback ends simultaneously. The reproduction time adjustment is performed on at least one of the reproduction images of the second frame group.

  Note that the functional block configuration of the moving image display apparatus 100 according to the present embodiment includes switching means in addition to the functional block configuration (see FIG. 1) of the moving image display apparatus 100 described in the first embodiment. . The switching means can switch whether to display a moving image after adjusting the reproduction time, which will be described later, or to display a moving image without adjusting the reproduction time. That is, it is possible to determine whether or not the reproduction display unit 40 performs the reproduction time adjustment process due to the operation of the switching unit.

  Unlike the first and second embodiments, when performing the reproduction time adjustment, the switching means is switched in the operable direction. Then, the playback display unit 40 performs playback time adjustment on at least one of the playback image of the first frame group and the playback image of the second frame group so that the playback start time and playback end time are synchronized.

  In FIG. 5, the reproduction display unit 40 adjusts the reproduction time so that the inspiratory period (time from time A to time B) and the expiration period (time from time B to time C) are the same.

  When performing the reproduction time adjustment, the reproduction display unit 40 obtains the time from time A to time B, and obtains the time from time B to time C. Thereafter, the reproduction display unit 40 performs a process of maintaining the reproduction time of the second frame group (expiration period) and adjusting the reproduction time of the first frame group (inspiration period), for example. In this case, the reproduction display unit 40 delays the reproduction time of the first frame group (intake period) at a predetermined double speed L1 (= {time C−time B} / {time B−time A}).

  As a result, the playback time of the first frame group (inspiration period) and the playback time of the second frame group (expiration period) become the same, and when the playback start time is synchronized, the playback time is also synchronized. Can do. In the present embodiment, as described in the second embodiment, the reproduction display device 40 performs reproduction display in which the movement of the lung field area Ha is combined in the inspiration period and the expiration period. That is, reproduction is performed in the direction opposite to the imaging order in either the first frame group or the second frame group. An example of a reproduction display state after the reproduction time adjustment process and the reproduction time inversion process is shown in FIG.

  In the example of FIG. 9, each frame in the intake period (that is, each frame constituting the first frame group) is reproduced and displayed in time series in the order of imaging. On the other hand, each frame in the expiration period (that is, each frame constituting the second frame group) is reproduced and displayed in time series in reverse to the imaging order. That is, in the second frame group, the reproduction starts from the last frame F7 in FIG. 6, and the reproduction ends at the frame F3 that is the starting point of the division and becomes the starting point of the second frame group.

  Furthermore, the playback display unit 40 displays the playback image of the first frame group and the playback image of the second frame group, which are synchronized at the start of playback and simultaneously end of playback, in a comparable manner (FIG. 9). reference).

  Here, when the necessity for image interpolation occurs due to the adjustment of the reproduction time (when the blank portion in the upper part of FIG. 9 exists), the reproduction display unit 40 also performs image interpolation.

  Actually, the time of the minimum value of the displacement amount in FIG. 5 becomes unstable. Therefore, it is desirable that the reproduction display unit 40 adjust the reproduction time so that the first time in the inhalation period and the second time in the expiration period are the same.

  Here, as shown in FIG. 10, the first time is a time between the first time D and the second time B. As shown in FIG. 7, at the first time D, the displacement amount of the lung field region Ha during the inspiration period is a displacement amount (= 0.05 × X1) that is 5% of the maximum value X1 of the displacement amount. It's time. Also, as shown in FIG. 10, the second time B is the time when the displacement amount of the lung field area Ha that appears first in time series after the first time D is the maximum value (= X1). It is.

  On the other hand, as shown in FIG. 10, the second time is a time between the second time B and the third time E. As shown in FIG. 10, at the third time E, the displacement amount (= 0.05) that appears first after the second time B and in which the displacement amount in the intake period is 5% of the maximum value X1 of the displacement amount. XX1) is the time.

  When performing the reproduction time adjustment, the reproduction display unit 40 obtains the time from time D to time B, and obtains the time from time B to time E. Thereafter, the reproduction display unit 40 performs a process of maintaining the reproduction time of the second frame group (expiration period) and adjusting the reproduction time of the first frame group (inspiration period), for example.

  In this case, the reproduction display unit 40 delays the reproduction time of the first frame group (intake period) at a predetermined double speed L2 (= {time E−time B} / {time B−time D}).

  As a result, the playback time of the first frame group (inspiration period) and the playback time of the second frame group (expiration period) become the same, and when the playback start time is synchronized, the playback time is also synchronized. Can do. Here, when the necessity for image interpolation arises due to the reproduction time adjustment, the reproduction time adjustment unit 33 also performs image interpolation. In addition, the playback display unit 40 displays the playback image of the first frame group and the playback image of the second frame group, which are synchronized with the start of playback and simultaneously end of playback, in a comparable manner.

  In the above description, the displacement amount used in determining the times D and E is 5% of the maximum value X1 of the displacement amount. However, it is not limited to 5%, and an optimal predetermined percentage is determined according to an empirical rule or the like.

  As described above, the moving image display apparatus 100 according to the present embodiment performs the playback time adjustment process in which the playback time of the first frame group is the same as the playback time of the second frame group, and the playback is performed. The reproduced image of the first frame group after the time adjustment and the reproduced image of the second frame group are displayed so as to be comparable.

  Therefore, for example, it is important to compare the time of the movement of the first half cycle and the time of the second half of the predetermined part that performs periodic movement, and compare the two to detect the difference between the two. This makes it easier for doctors and others to see them.

  In the present embodiment, the case where the process of inverting the reproduction direction of any one of the frame groups and the reproduction time adjustment process are described. However, as described in the first embodiment, the reproduction directions of the first and second frame groups are not reversed, the reproduction is synchronized at the start, and the reproduction time adjustment process described in the present embodiment is performed. Also good. That is, in the example shown in FIG. 7, the reproduction time may be adjusted in at least one of the frame groups. Even in this case, when the necessity for image interpolation occurs due to the adjustment of the reproduction time, the reproduction time adjustment unit 33 also performs the interpolation of the image.

  In each of the above-described embodiments, the predetermined part in the living body is the lung field region Ha, and the target of reproduction display is the respiratory dynamics in the living body. However, the subject is not limited to respiratory dynamics, and can be applied to other objects as long as it is a periodic movement of a predetermined part in a living body such as a heartbeat and joint dynamics.

  Further, the configuration shown in FIG. 1 can be a hardware configuration including circuit blocks in order to realize the operations described in the embodiments. However, the present invention can also be realized by a software configuration. That is, a program that defines the operations and procedures described above is created, the program is stored in a recording medium, and the computer reads and executes the program from the recording medium. Accordingly, the computer can be caused to function as the moving image display device according to each of the above embodiments, and the present invention can be realized as a software configuration.

DESCRIPTION OF SYMBOLS 10 Moving image data holding part 20 Moving image data acquisition part 30 Control part 31 Target area extraction part 32 Phase extraction part 33 Dividing part 34 Playback display part 100 Moving image display apparatus Ha Lung field area | region T Feature point

Claims (7)

A moving image data acquisition unit for acquiring moving image data composed of a plurality of frames imaged in time series, capturing a periodic movement of a predetermined part in a living body;
In the periodic movement of the predetermined part, the moving image data is a first frame group in a period in which the distance between two feature points in each frame constituting the moving image data is a minimum value to a maximum value; A dividing unit that divides the distance into a second frame group in a period in which the distance is from a maximum value to a minimum value;
A playback display unit that synchronizes the playback start time and displays the playback image of the first frame group and the playback image of the second frame group in a comparable manner;
A moving image display device characterized by that. A moving image data acquisition unit for acquiring moving image data composed of a plurality of frames imaged in time series, capturing a periodic movement of a predetermined part in a living body;
In the periodic movement of the predetermined part, the moving image data is obtained by reversing the first frame group of the first half cycle related to the movement of the predetermined part in one direction and the reverse of the one direction of the predetermined part. A dividing unit that divides the second frame group in the second half period related to the movement in the direction;
A playback display unit that synchronizes the playback start time and displays the playback image of the first frame group and the playback image of the second frame group in a comparable manner ;
Moving image display device you wherein a. The reproduction display unit
Reproducing the first frame group or the second frame group in a direction opposite to the time series of the moving image data imaging ;
The moving image display device according to claim 1, wherein the moving image display device is a moving image display device. The reproduction display unit
Adjusting the playback time for at least one of the playback image of the first frame group and the playback image of the second frame group so that playback ends at the same time ;
Moving image display device according to any one of claims 1 to 3, characterized in that. The predetermined part is:
The lung field,
The first frame group includes:
Consists of a plurality of the frames that image the inspiratory period of respiratory dynamics,
The second frame group is:
Capturing a breath duration of said respiratory behavior, Ru is composed of a plurality of said frames,
The moving image display device according to claim 1 , wherein the moving image display device is a moving image display device. A target area extracting unit for extracting each area of the predetermined part from the moving image data;
A phase in which a desired position is defined as a feature point in each extracted region of the predetermined part, and the periodic movement of the predetermined part is obtained by capturing the movement of the feature point in the moving image data. an extracting unit, that provides further
The moving image display device according to claim 1, wherein the moving image display device is a moving image display device . By being executed by a computer, the computer is caused to function as the moving image display device according to any one of claims 1 to 6.
A program characterized by that.

Images