JP2019047997A - X-ray imaging apparatus, imaging method, and imaging program - Google Patents

Abstract

To classify imaged pictures according to a condition determined using classification order and apparatus information at the time of imaging the pictures.SOLUTION: An X-ray imaging apparatus for imaging a picture using an X-ray comprises: an apparatus information acquisition unit 201 for acquiring a rotation angle, inclined angle, and position of a table on which a subject is to be placed; a flag condition acquisition unit 203 for acquiring a flag condition, a condition for classifying the imaged picture; a flag identification unit 202 for determining whether or not apparatus information satisfies the flag condition; a flag storage unit 204 for storing the identified flag; a state transition condition acquisition unit 207 for acquiring a state transition condition; a state identification unit 205 that on the basis of the acquired state transition condition, identifies a state of a transition destination from the present state and the identified flag; and a state information giving unit 208 for giving the state of the transition destination identified by the state identification unit 205 to the imaged picture.SELECTED DRAWING: Figure 2

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an X-ray diagnostic imaging technique that automatically classifies and diagnoses a captured image of an X-ray imaging apparatus.

  In stomach examinations and the like by X-ray imaging, there has been a case where it is not possible to acquire an intended image in a short X-ray irradiation time due to the influence of body movement of a subject and a fluid contrast agent. However, in recent X-ray image diagnosis, since the image quality of the image by low dose radiography has been improved by image processing, there is a tendency to increase the number of methods for storing a large amount of images by radiography for a long time with low dose. In order to diagnose X-ray images, it is necessary to efficiently search for a target image from such a large number of images, and the images are classified mainly using the patient ID attached to the photographed image, the photographing date, and the photographing region information. Is displayed.

  As a technique for classifying such a plurality of photographed images, in recent years, a medical image information processing system or the like which classifies in accordance with classification conditions using incidental information at the time of photographing is proposed. (For example, refer to patent document 1)

JP, 2011-67637, A

  However, in the above-described method, since the photographed image is classified according to the condition using the device information at the time of photographing, even if the same stomach part has different circumstances leading to the photographing like stomach examination, for example, the subject is rotated right In the case where it is necessary to classify the image after the left rotation, half-up state, etc., it is not taken into consideration. In addition, no specific description has been made of classification conditions in which a plurality of pieces of device information are combined.

  An object of the present invention is to solve the above-mentioned problems and to efficiently search for a target image by classifying a photographed image according to a condition determined using a classification order and device information. An image capturing apparatus, method, and program are provided.

  In order to achieve the above object, the present invention is an X-ray imaging apparatus for imaging an image by X-rays, comprising: an X-ray generator for irradiating X-rays onto a subject; a table on which the subject is placed; X-ray detector that detects X-rays transmitted through a sample and outputs it as an electrical signal, X-ray generator, table, control unit that controls the X-ray detector, and device information indicating table rotation, tilt angle, and position Device information acquisition unit for acquiring the flag, a flag identification unit for determining whether the acquired device information satisfies the flag condition for classifying the image, and a flag identified by the current state and the flag identification unit based on the state transition condition According to the present invention, there is provided an X-ray imaging apparatus comprising: a state identification unit for identifying a state of a transition destination; and a state information adding unit for applying a state identified by the state identification unit to an image.

  Further, in order to achieve the above object, according to the present invention, there is provided a method of imaging an image by an X-ray imaging apparatus, the X-ray imaging apparatus comprising: an X-ray generator for irradiating an X-ray to a subject; And an X-ray detector for detecting an X-ray transmitted through the subject and outputting it as an electric signal, and an X-ray generator, a table, and a control unit for controlling the X-ray detector. The device information indicating the table rotation, tilt angle, and position is acquired, it is determined whether the acquired device information satisfies the flag condition for classifying the image, the flag is identified, and the current state based on the state transition condition The present invention provides a photographing method of a configuration in which the state of the transition destination is identified from the flag identified as and the identified state is given to the image.

  Furthermore, in order to achieve the above object, according to the present invention, a program for imaging an image in an X-ray imaging apparatus, the X-ray imaging apparatus comprising: an X-ray generator for irradiating an X-ray to a subject; And a control unit for controlling the X-ray generator, the table, and the X-ray detector, and a control unit. The device information indicating the table rotation, tilt angle, and position is acquired, it is determined whether the acquired device information satisfies the flag condition for classifying the image, the flag is identified, and the current state based on the state transition condition The present invention provides a photographing program configured to identify the state of the transition destination from the flag identified as and to assign the identified state to the image.

  According to the present invention, it is possible to efficiently search for a target image because images stored in large quantities by complicated examinations are automatically classified and displayed.

It is a schematic diagram which shows one structural example of the X-ray imaging apparatus based on each Example. FIG. 7 is a schematic view for explaining an image identification process according to the first embodiment. FIG. 7 is a schematic view for explaining an abnormality identification process according to a second embodiment; It is a figure for demonstrating the table for demonstrating the conditions used for image identification based on each Example. It is a processing flow figure for explaining the image identification processing concerning each example.

  Hereinafter, embodiments of the X-ray imaging apparatus of the present invention will be described using the drawings. First, one configuration example of an X-ray imaging apparatus commonly used in each embodiment will be described. FIG. 1 is a schematic view showing an example of the entire configuration. The X-ray imaging apparatus according to each embodiment includes an X-ray source 105 such as an anode rotary X-ray tube, and is supplied with electric power from an X-ray generator 107 controlled by the X-ray controller 108. Generate. The X-ray source 105 is provided with an X-ray movable stop 104 for limiting an irradiation area of X-rays irradiated to the object 101. The X-ray movable diaphragm 104 is controlled by the X-ray movable diaphragm control device 106. The X-ray detector 103 is configured of a flat panel detector such as a flat panel detector (FPD), and is disposed at a position facing the X-ray source 105 across the subject 101 and controlled by the X-ray detector controller 110. Ru.

  The control unit of the X-ray imaging apparatus controls the X-ray controller 108 that controls the X-ray generator 107 described above, the X-ray movable diaphragm controller 106 that controls the X-ray movable diaphragm 104, and the X-ray detector 103 It includes an X-ray detector control unit 110, a table control unit 109 for controlling the table 102 capable of rotation, tilting and height adjustment, and a system control unit 111 for comprehensively controlling the operation of the entire apparatus. Here, the table 102 supports the movement of the subject to turn sideways by rotating. By using the mechanism including the table 102 and the table control device 109, the state of the subject can be determined from the rotation angle of the table 102.

  Further, each device information controlled by the system control apparatus 111 of the control unit is sent to the image processing unit 112 and stored as image incidental information. Here, the apparatus information is information indicating the state of each component of the X-ray imaging apparatus before imaging and at the time of imaging, for example, information such as a table rotation angle, a table inclination angle, and a compression cylinder position. The system control device 111 is equipped with an external storage device (not shown) and an operation device such as a mouse, a keyboard, and a touch panel. The operator can input commands, parameters, and the like necessary for control by the control unit of the entire apparatus via these operating devices. The system control apparatus 111 including the operation apparatus, the image processing unit 112, the display apparatus 113, and the like can be realized by a computer configuration such as a normal personal computer.

  As Embodiment 1, an embodiment of an X-ray imaging apparatus that adds state information to a captured image and stores the information will be described with reference to FIGS. 2 and 4. The present embodiment is an X-ray imaging apparatus for capturing an image by X-rays, and detects an X-ray generator that irradiates X-rays to a subject, a table on which the subject is placed, and X-rays transmitted through the subject X-ray detector which outputs as an electrical signal, an X-ray generator, a table, a control unit which controls the X-ray detector, an apparatus information acquisition unit which acquires apparatus information indicating rotation, inclination angle and position of the table The state of the transition destination is identified from the current state and the flag identified by the flag identification unit based on the state identification condition and a flag identification unit that determines whether the acquired device information satisfies the flag condition for classifying the image. It is an Example of the X-ray imaging apparatus of the structure provided with the state information identification part which carries out, and the state information addition part which gives the state which the state identification part identified to an image, the imaging method, and the imaging program.

  FIG. 2 is a diagram illustrating an example of functional configuration blocks in the image processing unit 112 of the X-ray imaging apparatus in the first embodiment. As shown in the figure, the device information acquisition unit 201 periodically acquires the device information possessed by the system control device 111, and sends the device information to the flag identification unit 202. The flag identifying unit 202 sets a flag in accordance with the flag condition acquired from the flag condition acquiring unit 203. The acquired flag condition indicates the condition for classifying the image. The flag that has been identified and set is stored in the flag storage unit 204.

  FIG. 4 shows an example of the flag condition which is the condition for classifying the image acquired by the flag condition acquisition unit 203 of this embodiment in the flag condition table 401. The flag condition acquisition unit 203 acquires and stores such flag conditions in advance using an operation device or the like of the system control apparatus 111. As shown in FIG. 4A, the flag condition table 401 stores flag ON conditions and states indicated by the flags, corresponding to the respective flag names A to F. For example, the flag name A indicates that the flag ON condition satisfies that the table rotation angle satisfies 15 degrees or less, or the table rotation angle satisfies 5 degrees or more. ". The flag ON conditions and descriptions of the other flag names B to F are as listed in the flag condition table 401.

  Similarly, the state transition condition acquisition unit 207 of this embodiment acquires and stores state transition conditions using the operation device or the like of the system control apparatus 111. FIG. 4B shows an example of state transition conditions corresponding to a stomach routine examination. Stomach routine examination is one of the screening examinations to be conducted in the usual examination. As shown in the figure, in the state transition condition table 402, transition conditions and explanations of the transition conditions are stored corresponding to the order of states 1 to 5 which are sequentially transitioned. For example, the transition condition of the state order 2 is the case where the current state order is 1 and the D flag is ON, and is referred to as "presence position filling". The other state orders 3 to 5 are also as shown in the transition condition table 402. The order of states 1 is an initial state, and is usually referred to as "standing standing". In addition, also in the head routine examination which is a screening examination, since the classification order of the photographed image is determined in advance, the state transition condition can be acquired and stored as a state transition condition table.

  The state identification unit 205 in FIG. 2 makes transition using the flag stored in the flag storage unit 204, the state information of the state storage unit 206 indicating the current state order, and the state transition condition table 402 when acquiring a captured image. Identify the state. The identified state is added to the captured image as additional information by the state information adding unit 208 and stored in the storage unit.

  FIG. 5 shows an example of a flowchart of a processing program for carrying out the image identification process of the present embodiment described above. As shown in the figure, the flag condition acquisition unit 203 and the state transition condition acquisition unit 207 first perform acquisition of the flag condition and acquisition of the state transition condition, and are stored in the flag condition table 401 and the transition condition table 402 (S501). ). Subsequently, the apparatus information acquisition unit 201 acquires apparatus information of the X-ray imaging apparatus (S 502), and the flag identification unit 202 performs flag identification based on the acquired apparatus information using the flag condition table 401, and the flag The setting is performed (S 503) and stored in the flag storage unit 204.

  Subsequently, when the start of photographing is OK in step 504, the presence or absence of state transition is checked (S505). When there is a state transition defined in the transition condition table 402 (OK), the states are updated in the order of the state after the transition (S506). Thereafter, flag initialization (S507) and the state after transition updated along with the state transition are added to the captured image as image management information, and stored and displayed (S508). Then, in order to continue the imaging of the image in the stomach routine examination, the process returns to device information acquisition (S502). Steps 509 and 510 in FIG. 5 are portions related to the second embodiment, and the description thereof is omitted here.

  According to the X-ray imaging apparatus of the present embodiment, the apparatus information is automatically added to the photographed images stored in large quantities by complicated examinations, and the apparatus information is stored and displayed, which is an object in X-ray image diagnosis. Images can be searched efficiently.

  Next, an embodiment of the X-ray imaging apparatus for identifying an abnormality of the apparatus and displaying a warning message will be described as a second embodiment with reference to FIGS. 3 and 4. That is, in the second embodiment, an abnormal identification unit that identifies an abnormal combination of the identified flag and the state based on the state transition condition, and a display unit that displays a warning when the abnormal identification unit identifies an abnormal combination. 1 is an embodiment of an X-ray imaging apparatus, method, and program provided. As an example is shown in FIG. 3, the difference in configuration between the apparatus of the second embodiment and the apparatus of the first embodiment warns the abnormality identification unit 305 instead of the state identification unit 205 and warns instead of the state information attachment unit 208. The display unit 308 is installed.

  In the configuration of the present embodiment, at the time of acquiring a photographed image, the abnormality identification unit 305 identifies an abnormality of the apparatus using the flag information of the flag storage unit 204, the state information of the state storage unit 206, and the state transition condition table 402. Do. As the identification method of the abnormality identification unit 305, in the state transition condition table 402, for example, although the A flag is ON corresponding to the state order 3, the state transition condition table as in the case where the current state order is "1". In light of state order 1 to 4 of 402, if the flag condition is satisfied but the current state order does not match, it is identified as abnormal. Then, the warning display unit 308 displays a warning message indicating an abnormality to the operator. That is, when the state transition is not performed in step 505 of the processing flow of FIG. 5 (NG), whether or not the abnormality identifying unit 305 is in the normal state is identified (S509), and when it is identified as abnormal (S510).

  According to the X-ray imaging apparatus of the present embodiment, in addition to the effects of the first embodiment, in the stomach routine examination, the head routine examination, etc., the abnormality of the state transition based on the state information of the X-ray imaging apparatus before and during imaging. Can be detected and a warning can be issued, so that a safe and reliable imaging can be efficiently performed by the X-ray imaging apparatus.

  The present invention is not limited to the embodiments described above, but includes various modifications. For example, the embodiments described above have been described in detail for better understanding of the present invention, and are not necessarily limited to those having all the configurations of the description. Further, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of the second embodiment can be added to the configuration of the first embodiment. In addition, with respect to a part of the configuration of each embodiment, it is possible to add, delete, and replace other configurations.

  Furthermore, although each configuration, function, control device, image processing unit, etc. described above has described an example of creating a processing program for realizing a part or all of them, a part or all of them is designed by an integrated circuit, for example It goes without saying that the present invention may be realized by hardware as well. That is, all or part of the functions of the processing unit may be realized by an integrated circuit such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA) instead of the program.

101 object 102 table 103 X-ray detector 104 X-ray movable diaphragm 105 X-ray source 106 X-ray movable diaphragm control unit 107 X-ray generator 108 X-ray controller 109 table control unit 110 X-ray detector controller 111 system control Device 112 Image processing unit 113 Display device 201 Device information acquisition unit 202 Flag identification unit 203 Flag condition acquisition unit 204 Flag storage unit 205 State identification unit 206 State storage unit 207 State transition condition acquisition unit 208 State information assignment unit 305 Abnormality identification unit 308 Warning display section 401 Flag condition table 402 State transition condition table

Claims (15)

An X-ray imaging apparatus for imaging an image by X-rays,
An X-ray generator for irradiating the subject with X-rays;
A table on which the subject is placed, and an X-ray detector which detects an X-ray transmitted through the subject and outputs it as an electric signal;
The X-ray generator, the table, and a control unit that controls the X-ray detector;
A device information acquisition unit that acquires device information indicating the rotation, inclination angle, and position of the table;
A flag identification unit that determines whether the acquired device information satisfies a flag condition for classifying the image;
A state identification unit that identifies a state of a transition destination from the current state and the flag identified by the flag identification unit based on a state transition condition;
A state information adding unit that adds the state identified by the state identification unit to the image;
An X-ray imaging apparatus characterized by The X-ray imaging apparatus according to claim 1, wherein
A flag condition acquisition unit that acquires and stores the flag condition and the state transition condition in advance, and a state transition condition acquisition unit.
An X-ray imaging apparatus characterized by The X-ray imaging apparatus according to claim 1, wherein
It further comprises a storage unit that stores the identified state and the identified flag,
An X-ray imaging apparatus characterized by The X-ray imaging apparatus according to claim 1, wherein
The state transition condition is a state transition condition corresponding to a plurality of state sequences of routine inspection,
An X-ray imaging apparatus characterized by The X-ray imaging apparatus according to claim 4, wherein
The state transition condition is determined by a combination of the flag and the state order.
An X-ray imaging apparatus characterized by The X-ray imaging apparatus according to claim 1, wherein
The system further includes an abnormality identification unit that identifies an abnormal combination of the identified states and the identified states based on the state transition conditions.
An X-ray imaging apparatus characterized by The X-ray imaging apparatus according to claim 6, wherein
And a display unit configured to display a warning sentence when the abnormality identification unit identifies the abnormal combination.
An X-ray imaging apparatus characterized by A method of imaging an image by an X-ray imaging apparatus
The X-ray imaging apparatus
An X-ray generator for irradiating the subject with X-rays; a table on which the subject is placed; an X-ray detector for detecting the X-rays transmitted through the subject; and outputting as an electrical signal; And a controller configured to control the X-ray detector.
The control unit
Obtaining device information indicating the rotation, inclination angle and position of the table;
It is determined whether or not the acquired device information satisfies a flag condition for classifying the image, and a flag is identified;
Based on the state transition condition, the state of the transition destination is identified from the flag identified as the current state,
Assign the identified state to the image,
A photographing method characterized by The imaging method according to claim 8,
The state transition condition is a state transition condition corresponding to the order of a plurality of states of the routine examination of the X-ray imaging apparatus.
A photographing method characterized by The imaging method according to claim 9,
The state transition condition is determined by a combination of the flag and the state order.
A photographing method characterized by The imaging method according to claim 8,
The control unit
Identifying an abnormal combination of the identified states and the identified states based on the state transition conditions;
Output a warning when the abnormal combination is identified,
A photographing method characterized by An imaging program for an image in an X-ray imaging apparatus
The X-ray imaging apparatus
An X-ray generator for irradiating the subject with X-rays; a table on which the subject is placed; an X-ray detector for detecting the X-rays transmitted through the subject; and outputting as an electrical signal; And a controller configured to control the X-ray detector.
The control unit is
Obtaining device information indicating the rotation, inclination angle and position of the table;
It is determined whether or not the acquired device information satisfies a flag condition for classifying the image, and a flag is identified;
Based on the state transition condition, the state of the transition destination is identified from the flag identified as the current state,
Execute to assign the identified state to the image,
A shooting program characterized by The photographing program according to claim 12, wherein
The state transition condition is a state transition condition corresponding to the order of a plurality of states of the routine examination of the X-ray imaging apparatus.
A shooting program characterized by It is the imaging | photography program of Claim 13, Comprising:
The state transition condition is determined by a combination of the flag and the state order.
A shooting program characterized by The photographing program according to claim 12, wherein
The control unit is
Identifying an abnormal combination of the identified states and the identified states based on the state transition conditions;
Operate to output a warning when the abnormal combination is identified,
A shooting program characterized by

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