阅读说明：本技术 X射线装置 (X-ray device ) 是由 浦田朋晃 于 2019-06-25 设计创作，主要内容包括：管理装置(70)具备：消耗程度检测部(72),其根据对发射器施加的电压、电流或通电时间来检测发射器的消耗程度；附着量估计部(73),其基于发射器的消耗程度、以及存储在存储部(71)中的发射器的消耗程度与导电体附着于外壳的附着量的关系,来估计导电体附着于外壳的附着量；以及沿面放电估计部(74),其基于发射器的消耗程度、存储在存储部(71)中的发射器的消耗程度与导电体附着于外壳的附着量的关系、以及存储在存储部(71)中的导电体附着于外壳的附着量与针对外壳的沿面放电的概率的关系,来估计发生沿面放电的概率。(A management device (70) is provided with: a consumption degree detection unit (72) that detects the consumption degree of the emitter from the voltage, current, or energization time applied to the emitter; an adhesion amount estimation unit (73) that estimates the amount of adhesion of the conductor to the housing based on the degree of consumption of the transmitter and the relationship between the degree of consumption of the transmitter and the amount of adhesion of the conductor to the housing, which is stored in the storage unit (71); and a creeping discharge estimation unit (74) that estimates the probability of occurrence of creeping discharge on the basis of the degree of wear of the emitter, the relationship between the degree of wear of the emitter stored in the storage unit (71) and the amount of adhesion of the conductor to the housing, and the relationship between the amount of adhesion of the conductor to the housing stored in the storage unit (71) and the probability of creeping discharge for the housing.)

1. An X-ray device is characterized by comprising:

an X-ray generating unit including an emitter, a target, and a housing, wherein the emitter is formed of an electric conductor and emits electrons, the target generates X-rays by collision of the electrons emitted from the emitter with the target, and the housing accommodates the emitter and the target;

a consumption degree detection unit that detects a consumption degree of the transmitter;

a storage unit that stores a relationship between a degree of consumption of the transmitter and an amount of adhesion of a conductor constituting the transmitter to the housing; and

and an adhesion amount estimating unit that estimates an adhesion amount of the conductor constituting the transmitter to the housing based on a degree of consumption of the transmitter and a relationship between the degree of consumption of the transmitter and the adhesion amount of the conductor constituting the transmitter to the housing, which is stored in the storage unit.

2. The X-ray apparatus according to claim 1,

the consumption degree detecting section detects the consumption degree of the transmitter from a voltage, a current, or an energization time applied to the transmitter.

3. The X-ray apparatus according to claim 1,

and a temperature sensor is also arranged on the device,

the adhesion amount estimating unit estimates the amount of adhesion of the conductor constituting the emitter to the housing, using the temperature of the X-ray generating unit detected by the temperature sensor or the temperature of the insulating oil in the X-ray generating unit.

4. The X-ray apparatus according to claim 1,

further comprises an attitude sensor for detecting the attitude of the X-ray generation unit,

the adhesion amount estimating unit estimates an adhesion amount of the conductor constituting the emitter adhering to the housing, using the posture of the X-ray generating unit detected by the posture sensor.

5. The X-ray apparatus according to claim 1,

the storage unit further stores a relationship between an amount of adhesion of a conductor constituting the emitter to the housing and a probability of occurrence of creeping discharge with respect to the housing,

the X-ray device further includes a creeping discharge estimation unit that estimates a probability of occurrence of creeping discharge based on a degree of consumption of the emitter, a relationship between the degree of consumption of the emitter stored in the storage unit and an amount of adhesion of a conductor constituting the emitter to the housing, and a relationship between the amount of adhesion of the conductor constituting the emitter to the housing stored in the storage unit and a probability of creeping discharge with respect to the housing.

6. The X-ray apparatus according to claim 5,

and a warning display unit configured to display a warning when the estimated probability of occurrence of creeping discharge exceeds a preset value.

7. The X-ray apparatus according to claim 1,

the storage unit further stores a relationship between an amount of adhesion of the conductor constituting the emitter to the housing and a transmittance of the X-ray passing through the housing, or a relationship between an amount of adhesion of the conductor constituting the emitter to the housing and a spectrum of the X-ray passing through the housing,

the X-ray device further includes an image processing unit that changes image processing conditions of the X-ray image displayed on the display unit based on an amount of adhesion of the conductor constituting the emitter to the housing, and a relationship between an amount of adhesion of the conductor constituting the emitter to the housing and a transmittance of the X-ray passing through the housing, which are stored in the storage unit, or based on an amount of adhesion of the conductor constituting the emitter to the housing, and a relationship between an amount of adhesion of the conductor constituting the emitter to the housing and a spectrum of the X-ray passing through the housing, which are stored in the storage unit.

Technical Field

The present invention relates to an X-ray device including an X-ray generating unit in which an emitter and a target are disposed in a housing.

Background

The lifetime of an X-ray generating unit including an X-ray tube can be the discharge lifetime of the X-ray tube. For example, with respect to space discharge caused by a decrease in the degree of vacuum of an X-ray tube, conventionally, the degree of risk of discharge is predicted from the degree of vacuum of the X-ray tube (see patent document 1). In addition, the risk of discharge is also predicted using the number of exposures of the X-ray from the X-ray generation unit.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2006 and 100174

Disclosure of Invention

Problems to be solved by the invention

As the discharge that becomes the root of the discharge life of the X-ray tube, in addition to the space discharge, there can be mentioned not only the space discharge caused by the reduction in the degree of vacuum of the X-ray tube but also the creeping discharge caused by the adhesion of the conductor constituting the emitter to the inner peripheral surface of the housing constituting the X-ray tube. It is difficult to predict the degree of risk of creeping discharge that occurs due to the adhesion of the conductor constituting the emitter to the inner surface of the case. Further, when the risk of discharge is predicted by the number of times of exposure to X-rays from the X-ray generation unit, the risk of discharge differs depending on X-ray conditions such as a tube voltage, a tube current, and an exposure time at the time of X-ray exposure, and therefore, there is a problem that the prediction accuracy of the risk is not accurate.

The present invention has been made to solve the above-described problems, and an object thereof is to provide an X-ray apparatus capable of more accurately estimating the amount of adhesion of a conductor constituting an emitter to a housing.

Means for solving the problems

The first invention is characterized by comprising: an X-ray generating unit including an emitter, a target, and a housing, wherein the emitter is formed of an electric conductor and emits electrons, the target generates X-rays by collision of the electrons emitted from the emitter with the target, and the housing accommodates the emitter and the target; a consumption degree detection unit that detects a consumption degree of the transmitter; a storage unit that stores a relationship between a degree of consumption of the transmitter and an amount of adhesion of a conductor constituting the transmitter to the housing; and an adhesion amount estimating unit that estimates an adhesion amount of the conductor constituting the transmitter to the housing based on a degree of consumption of the transmitter and a relationship between the degree of consumption of the transmitter and the adhesion amount of the conductor constituting the transmitter to the housing, which is stored in the storage unit. That is, the X-ray device according to the first aspect of the present invention includes: an X-ray generating unit including an emitter, a target, and a housing, wherein the emitter is formed of an electric conductor and emits electrons, the target generates X-rays by collision of the electrons emitted from the emitter with the target, and the housing accommodates the emitter and the target; a storage unit that stores a relationship between a degree of consumption of the transmitter and an amount of adhesion of a conductor constituting the transmitter to the housing; and a processor that performs the following processing. (1) The degree of consumption of the transmitter is detected. (2) The amount of adhesion of the conductor constituting the transmitter to the housing is estimated based on the relationship between the degree of consumption of the transmitter, the degree of consumption of the transmitter stored in the storage unit, and the amount of adhesion of the conductor constituting the transmitter to the housing.

With the second invention, the consumption degree detecting section detects the consumption degree of the emitter based on a voltage, a current, or an energization time applied to the emitter. That is, the processor performs a process of detecting the degree of consumption of the transmitter from a voltage, a current, or a power-on time applied to the transmitter.

In the third aspect of the invention, the X-ray generator may further include a temperature sensor, and the adhesion amount estimating unit may estimate the amount of adhesion of the conductor constituting the emitter to the housing, using the temperature of the X-ray generator detected by the temperature sensor or the temperature of the insulating oil in the X-ray generator. That is, the processor performs the following processing: the amount of adhesion of the conductor constituting the emitter to the housing is estimated using the temperature of the X-ray generating unit detected by the temperature sensor or the temperature of the insulating oil in the X-ray generating unit.

In the fourth aspect of the invention, the X-ray generator may further include an attitude sensor that detects an attitude of the X-ray generator, and the adhesion amount estimator may estimate an adhesion amount of the conductor constituting the emitter adhering to the housing, using the attitude of the X-ray generator detected by the attitude sensor. That is, the processor performs the following processing: the posture of the X-ray generating unit detected by the posture sensor is used to estimate the amount of adhesion of the conductor constituting the emitter to the housing.

In the fifth aspect of the invention, the storage unit further stores a relationship between an amount of adhesion of the conductor constituting the emitter to the housing and a probability of occurrence of creeping discharge with respect to the housing, and the X-ray device further includes a creeping discharge estimation unit that estimates the probability of occurrence of creeping discharge based on a degree of consumption of the emitter, a relationship between the degree of consumption of the emitter and the amount of adhesion of the conductor constituting the emitter to the housing stored in the storage unit, and a relationship between the amount of adhesion of the conductor constituting the emitter to the housing and the probability of occurrence of creeping discharge with respect to the housing stored in the storage unit. That is, the storage unit further stores a relationship between an amount of adhesion of a conductor constituting the emitter to the housing and a probability of occurrence of creeping discharge with respect to the housing, and the processor executes: the probability of occurrence of creeping discharge is estimated based on the degree of consumption of the emitter, the relation between the degree of consumption of the emitter stored in the storage unit and the amount of adhesion of the conductor constituting the emitter to the housing, and the relation between the amount of adhesion of the conductor constituting the emitter to the housing and the probability of creeping discharge for the housing stored in the storage unit.

In the sixth aspect of the invention, the warning display is executed when the probability of occurrence of creeping discharge estimated by the creeping discharge estimation section exceeds a preset value. That is, the processor performs the following processing: when the probability of occurrence of creeping discharge estimated by the creeping discharge estimation unit exceeds a preset set value, a warning display is performed.

In the seventh aspect of the invention, the storage unit further stores a relationship between an amount of adhesion of the conductor constituting the emitter to the housing and a transmittance of the X-rays passing through the housing, or a relationship between an amount of adhesion of the conductor constituting the emitter to the housing and a spectrum of the X-rays passing through the housing, and the X-ray apparatus further includes an image processing unit that, based on the amount of adhesion of the conductor constituting the emitter to the housing, the relationship between the amount of adhesion of the conductor constituting the emitter to the housing and the transmittance of the X-rays passing through the housing, or the relationship between the amount of adhesion of the conductor constituting the emitter to the housing and the spectrum of the X-rays passing through the housing, stored in the storage unit, the image processing conditions of the X-ray image displayed on the display unit are changed. That is, the storage unit further stores a relationship between an amount of adhesion of the conductor constituting the emitter to the housing and a transmittance of the X-ray passing through the housing, or a relationship between an amount of adhesion of the conductor constituting the emitter to the housing and a spectrum of the X-ray passing through the housing, and the X-ray apparatus includes a processor that executes: the image processing conditions of the X-ray image displayed on the display unit are changed based on the amount of adhesion of the conductors constituting the emitter to the housing, the relationship between the amount of adhesion of the conductors constituting the emitter to the housing and the transmittance of the X-rays passing through the housing, which is stored in the storage unit, or the relationship between the amount of adhesion of the conductors constituting the emitter to the housing and the spectrum of the X-rays passing through the housing, which is stored in the storage unit.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the first and second aspects of the invention, the amount of adhesion of the conductive body constituting the transmitter to the housing can be estimated based on the degree of consumption of the transmitter.

According to the third aspect of the present invention, the amount of adhesion of the conductor constituting the emitter to the housing can be estimated more accurately using the temperature of the X-ray generating unit detected by the temperature sensor or the temperature of the insulating oil in the X-ray generating unit.

According to the fourth aspect of the invention, by using the posture of the X-ray generation unit detected by the posture sensor, the amount of adhesion of the conductor constituting the emitter to the housing can be estimated more accurately in consideration of the temperature distribution caused by the posture of the X-ray generation unit.

According to the fifth and sixth inventions, the probability of occurrence of creeping discharge can be estimated based on the degree of consumption of the emitter, and the probability can be used to warn that the discharge life will be exhausted.

According to the seventh invention, the transmittance of the X-ray passing through the housing or the spectrum of the X-ray passing through the housing can be identified based on the degree of consumption of the emitter. This makes it possible to change the image processing conditions of the X-ray image displayed on the display unit and display an appropriate image on the display unit.

Drawings

Fig. 1 is a schematic diagram of an X-ray fluoroscopic system constituting a part of an X-ray apparatus according to the present invention.

Fig. 2 is a perspective view of a fluoroscopic table disposed in an examination room R2.

Fig. 3 is a schematic diagram showing the structure of the X-ray generation unit 50.

Fig. 4 is a block diagram showing a main control system of the X-ray apparatus according to the present invention.

Fig. 5 is a graph showing a relationship between the degree of consumption of the emitter 57 and the amount of adhesion of the conductive body constituting the emitter 57 to the housing 60.

Fig. 6 is a graph showing a relationship between the degree of consumption of the emitter 57 and the amount of adhesion of the conductive body constituting the emitter 57 to the housing 60.

Fig. 7 is a graph showing a relationship between an adhesion amount of the electric conductor constituting the emitter 57 adhered to the housing 60 and a probability of occurrence of creeping discharge with respect to the housing 60.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 is a schematic diagram of an X-ray fluoroscopic system constituting a part of an X-ray apparatus according to the present invention. Fig. 2 is a perspective view of a fluoroscopic table disposed in the examination room R2.

The X-ray imaging apparatus for performing X-ray imaging and X-ray fluoroscopy of a subject M includes a controller 42 and a display unit 41 provided in an operation room R1, and a fluoroscopy table provided in an examination room R2, wherein the controller 42 includes an operation panel 43. The operation chamber R1 and the inspection chamber R2 are partitioned by a partition wall 21. The partition wall 21 is provided with a lead glass window 22 that can block X-rays, and the operator D can check the state inside the inspection room R2 through the lead glass window 22.

As shown in fig. 2, the X-ray radiographic table provided in the examination room R2 includes: a main column 15 erected on the base 19; a holding portion 16 that is arranged to be able to ascend and descend in the main column 15; a top plate 13 rotatably coupled to the holding portion 16; a column 17 for supporting the X-ray generation unit 50 and the collimator 12; and an X-ray detector 14 such as a flat panel detector disposed below the surface of the top plate 13 at a position facing the X-ray generating unit 50. In fig. 1, illustration of the main column 15 and the holding portion 16 is omitted.

The holding portion 16 is raised and lowered in the Z direction shown in fig. 2. The top plate 13 rotates together with the support column 17 about an axis (an axis in the Y direction shown in fig. 2) that is perpendicular to the longitudinal direction of the top plate 13 and faces in the horizontal direction. The column 17 and the X-ray detector 14 reciprocate in synchronization with each other in the longitudinal direction of the top plate 13. Further, the X-ray generation unit 50 and the collimator 12 are raised and lowered in the Z direction shown in fig. 2 together with the column 17. The X-ray generation unit 50 and the collimator 12 are rotatable in accordance with the rotation of the top plate 13 and the support column 17, and are swingable in a state of being supported by the support column 17. The posture of the X-ray generation unit 50 changes due to the swinging movement with respect to the column 17 and the rotation of the column 17.

Fig. 3 is a schematic diagram showing the structure of the X-ray generation unit 50.

The X-ray generating unit 50 has a structure in which an emitter 57 as a cathode and a target 58 as a rotary anode are disposed in an insulating case 60 made of glass or ceramic. A vacuum is present within the housing 60. The housing 60 is disposed in a case 55 provided with an X-ray transmitting window 56, and the case 55 is made of an X-ray non-transmitting member such as lead. The housing 55 is filled with insulating oil. A temperature sensor 53 for measuring the temperature of the insulating oil through the case 55 is disposed outside the case 55. An attitude sensor 54 such as an accelerometer is also disposed outside the housing 55, and the attitude sensor 54 detects the attitude of the X-ray generation unit 50, which changes in attitude with the swinging of the support column 17 or the rotation of the support column 17.

The transmitter 57 is also called a filament, and is connected to the ac power supply 51 and the ammeter 52 via a switch 59. The target 58 is rotatably supported by a bearing mechanism 63. The transmitter 57 is rotated by driving a rotation driving function including a motor stator 61 and a motor rotor 62.

The X-ray generation unit 50 includes a high voltage supply unit 30. The emitter 57 is applied with a negative high voltage by the high voltage supply section 30. Further, a positive high voltage is applied to the target 58 by the high voltage supply unit 30. Thereby, a high tube voltage is applied between the emitter 57 and the target 58.

When a current is applied from the ac power supply 51 to the emitter 57 and the emitter 57 is heated by a bypass heating mechanism not shown, thermal electrons a are emitted from the emitter 57. The thermal electrons a are moved toward the target 58 by the tube voltage, and collide with the target 58 to generate X-rays B. At this time, the current flowing through the emitter 57 is measured by the current meter 52, and the tube voltage supplied from the high voltage supply unit 30 is controlled so that the current value becomes constant. The degree of consumption of the transmitter 57 is estimated from the value of the current flowing through the transmitter 57 at this time and the magnitude of the tube voltage.

Fig. 4 is a block diagram showing a main control system of the X-ray device according to the present invention.

The X-ray apparatus according to the present invention is configured to connect the controller 42 of the X-ray fluoroscopic apparatus shown in fig. 1 to the management apparatus 70 such as the X-ray generating unit 50 for managing the X-ray fluoroscopic apparatus via the network 100 such as the internet. The management device 70 is connected to a plurality of X-ray fluoroscopic apparatuses via a network 100, and manages the operating states, failure states, and the like of the X-ray fluoroscopic apparatuses. Further, the following configuration may be adopted: the X-ray fluoroscopic apparatus itself has a management function corresponding to the management apparatus 70, instead of using the management apparatus 70 connected via the network 100.

The controller 42 shown in fig. 1 and 4 is connected to the X-ray generation unit 50 and the high voltage supply unit 30. The controller 42 includes an image processing unit 44, and the image processing unit 44 performs image processing on the X-ray image captured by the X-ray detector 14 and displays the X-ray image on the display unit 41. The controller 42 is constituted by a computer with software installed. The controller 42 includes a processor (CPU) that executes the following processing: the X-ray image captured by the X-ray detector 14 is subjected to image processing and displayed on the display unit 41.

The management device 70 is constituted by a computer on which software is installed. The functions of the respective sections included in the management apparatus 70 are realized by executing software installed in a computer.

The management device 70 includes a storage unit 71, and the storage unit 71 stores a relationship between a degree of wear of the emitter 57 and an amount of adhesion of the conductor constituting the emitter 57 to the housing 60, a relationship between an amount of adhesion of the conductor constituting the emitter 57 to the housing 60 and a probability of occurrence of creeping discharge with respect to the housing 60, a relationship between an amount of adhesion of the conductor constituting the emitter 57 to the housing 60 and a transmittance of the X-ray passing through the housing 60, or a relationship between an amount of adhesion of the conductor constituting the emitter 57 to the housing 60 and a spectrum of the X-ray passing through the housing 60.

Fig. 5 and 6 are graphs showing a relationship between the degree of consumption of the emitter 57 and the amount of adhesion of the conductive body constituting the emitter 57 to the case 60. Here, fig. 5 shows a case where the transmitter 57 is a single transmitter. Fig. 6 shows a case where a plurality of emitters 57 are provided, such as for large focus and small focus. As shown in these figures, as the degree of consumption of the emitter 57 increases, the amount of adhesion of the conductor constituting the emitter 57 to the housing 60 increases. Fig. 7 is a graph showing a relationship between an adhesion amount of the electric conductor constituting the emitter 57 adhered to the housing 60 and a probability of occurrence of creeping discharge with respect to the housing 60. As shown in the figure, when the amount of adhesion of the conductor constituting the emitter 57 to the case 60 is fixed or more, the probability of occurrence of creeping discharge increases rapidly. The data shown in fig. 5 to 7 is experimentally obtained in advance and stored in the storage unit 71.

Referring again to fig. 4, the management device 70 includes: a consumption degree detection unit 72 that detects a consumption degree of the transmitter 57 from a voltage, a current, or an energization time (an integrated energization time obtained by weighting current values) applied to the transmitter 57; an adhesion amount estimating unit 73 that estimates an adhesion amount of the conductor to the housing 60 based on the degree of consumption of the transmitter 57 and the relationship between the degree of consumption of the transmitter 57 and the adhesion amount of the conductor to the housing 60 stored in the storage unit 71; and a creeping discharge estimating unit 74 that estimates a probability of occurrence of creeping discharge based on a degree of consumption of the emitter 57, a relationship between the degree of consumption of the emitter 57 and an amount of adhesion of the conductor to the housing 60 stored in the storage unit 71, and a relationship between the amount of adhesion of the conductor to the housing 60 and a probability of creeping discharge with respect to the housing 60 stored in the storage unit 71. The management device 70 includes a processor (CPU) that executes the following processes: detecting the degree of consumption of the transmitter 57 from the voltage, current, or energization time applied to the transmitter 57; estimating the amount of adhesion of the conductor to the housing 60 based on the degree of consumption of the transmitter 57 and the relationship between the degree of consumption of the transmitter 57 and the amount of adhesion of the conductor to the housing 60 stored in the storage section 71; and estimating the probability of occurrence of creeping discharge based on the degree of consumption of the emitter 57, the relationship between the degree of consumption of the emitter 57 and the amount of adhesion of the conductive body to the housing 60 stored in the storage section 71, and the relationship between the amount of adhesion of the conductive body to the housing 60 and the probability of creeping discharge for the housing 60 stored in the storage section 71.

Further, the management device 70 includes: a dose estimation unit 75 that estimates the dose of the X-rays irradiated from the X-ray generation unit 50 based on the amount of adhesion of the conductors to the housing 60 and the relationship between the amount of adhesion of the conductors to the housing 60 and the transmittance of the X-rays passing through the housing 60; and a line quality estimation unit 76 that estimates the line quality of the X-ray irradiated from the X-ray generation unit 50 based on the relationship between the amount of adhesion of the conductor to the housing 60 and the spectrum of the X-ray passing through the housing 60. The dose estimated by the dose estimation section 75 and the line quality estimated by the line quality estimation section 76 are sent to the image processing section 44 of the controller 42. The image processing unit 44 changes the image processing conditions of the X-ray image displayed on the display unit 41 based on the dose and line quality data. That is, the processor of the management apparatus 70 executes the following processing: estimating the dose of the X-ray irradiated from the X-ray generation unit 50 based on the amount of adhesion of the conductors to the housing 60 and the relationship between the amount of adhesion of the conductors to the housing 60 and the transmittance of the X-ray passing through the housing 60; and estimating the quality of the X-ray irradiated from the X-ray generation unit 50 based on the relationship between the amount of adhesion of the conductive body to the housing 60 and the spectrum of the X-ray passing through the housing 60. The processor of the controller 42 executes processing for changing the image processing conditions of the X-ray image displayed on the display unit 41 based on the dose and line quality data.

The management device 70 further includes a history storage unit 77, and the history storage unit 77 stores a history of the usage history of the X-ray generation unit 50, the magnitude of the current value and the tube voltage flowing through the emitter 57, the degree of consumption of the emitter 57, the amount of adhesion of the conductor to the housing 60, and the like.

When X-ray imaging is performed in the X-ray apparatus having the above-described configuration, the X-ray generation unit 50 and the collimator 12 are swung with respect to the support column 17 or the support column 17 is rotated in accordance with imaging conditions, thereby assuming a predetermined posture. The posture of the X-ray generation unit 50 at this time is detected by a posture sensor 54 such as an accelerometer. The temperature of the X-ray generation unit 50 is measured by a temperature sensor 53. In this state, X-rays are emitted from the X-ray generation unit 50 to perform X-ray imaging.

When the X-ray generating unit 50 emits X-rays, the current value flowing through the emitter 57 is measured by the ammeter 52, and the measured current value is transmitted to the management device 70 via the network 100 together with data of the tube voltage. At this time, the data of the posture of the X-ray generation unit 50 and the data of the temperature of the X-ray generation unit 50 are also transmitted to the management device 70 via the network 100.

The consumption degree detecting unit 72 of the management device 70 detects the consumption degree of the transmitter 57 from data of the current flowing through the transmitter 57 measured by the ammeter 52. Then, the adhesion amount estimating unit 73 of the management device 70 estimates the adhesion amount of the conductor attached to the housing 60 based on the consumption degree of the transmitter 57 and the relationship between the consumption degree of the transmitter 57 and the adhesion amount of the conductor attached to the housing 60, which constitutes the transmitter 57, stored in the storage unit 71.

In estimating the amount of adhesion of the conductor, data of the temperature of the X-ray generation unit 50 and data of the posture of the X-ray generation unit 50 are considered. That is, the higher the temperature of the X-ray generation unit 50, that is, the temperature of the working oil or the housing 60 in the X-ray generation unit 50, the smaller the amount of adhesion of the conductor to the housing 60. The temperature of the X-ray generation unit 50 measured by the temperature sensor 53 greatly changes depending on the posture of the X-ray generation unit 50. Therefore, when estimating the amount of adhesion of the conductor, data of the temperature of the X-ray generation unit 50 and data of the posture of the X-ray generation unit 50 are considered.

Then, the creeping discharge estimation section 74 of the management device 70 estimates the probability of occurrence of creeping discharge based on the degree of consumption of the emitter 57, the relationship between the degree of consumption of the emitter 57 stored in the storage section 71 and the amount of adhesion of the conductor constituting the emitter 57 to the housing 60, and the relationship between the amount of adhesion of the conductor constituting the emitter 57 to the housing 60 stored in the storage section 71 and the probability of creeping discharge with respect to the housing 60.

When the discharge probability exceeds the reference value shown in fig. 7, for example, the management device 70 displays a warning on the display unit 41 of the X-ray fluoroscopic apparatus. The warning display is a display for notifying that the possibility of creeping discharge is high. At this time, a warning display for prompting the execution of aging (japanese: シーズニング) (aging (japanese: エージング)) may be performed on the display unit 41.

Various data such as data on the degree of wear of the emitter 57 when the X-ray imaging is continued, data on the amount of adhesion of the conductor to the housing 60, and data on the possibility of creeping discharge are continuously stored in the history storage unit 77. In addition, when the warning display is performed, the contents of the warning display may be estimated by referring to various data in the past as necessary.

In parallel with this, when the X-ray generating unit 50 emits X-rays, the dose estimating unit 75 estimates the dose of the X-rays emitted from the X-ray generating unit 50 based on the amount of adhesion of the conductors to the housing 60 and the relationship between the amount of adhesion of the conductors to the housing 60 and the transmittance of the X-rays passing through the housing 60, which is stored in the storage unit 71. The linear quality estimating unit 76 estimates the linear quality of the X-ray irradiated from the X-ray generating unit 50 based on the relationship between the amount of adhesion of the conductor to the housing 60 and the spectrum of the X-ray passing through the housing 60 stored in the storage unit 71.

When the conductive body is attached to the housing 60, a part of the X-ray passing through the housing 60 is sometimes blocked or the spectrum of the X-ray is sometimes shifted. Accordingly, the data of the X-ray dose and the data of the X-ray quality are transmitted to the controller 42 of the X-ray fluoroscopic imaging apparatus. Then, the image processing unit 44 of the controller 42 changes the image processing conditions such as the brightness and contrast of the X-ray image displayed on the display unit 41 based on the dose data and the line quality data. This enables the X-ray image displayed on the display unit 41 to be an appropriate image.

In the above-described embodiment, the X-ray apparatus according to the present invention is configured such that the fluoroscopic imaging apparatus is connected to the management apparatus 70 via the network 100. However, the management device 70 may be directly connected to the fluoroscopic imaging device, or each configuration of the management device 70 may be included in a control unit of the fluoroscopic imaging device.

In the above embodiment, the probability of occurrence of creeping discharge is estimated based on the degree of consumption of the emitter 57, the relationship between the degree of consumption of the emitter 57 and the amount of adhesion of the conductor to the housing 60 stored in the storage section 71, and the relationship between the amount of adhesion of the conductor to the housing 60 and the probability of creeping discharge with respect to the housing 60 stored in the storage section 71. However, the relationship between the degree of wear of the emitter 57 and the probability of creeping discharge with respect to the casing 60 may be obtained in advance by combining these two relationships, and the creeping discharge estimation unit 74 may execute warning or the like based on the relationship between the degree of wear of the emitter 57 and the probability of creeping discharge with respect to the casing 60.

Description of the reference numerals

12: a collimator; 13: a top plate; 14: an X-ray detector; 30: a high voltage supply unit; 41: a display unit; 42: a controller; 43: an operation panel; 44: an image processing unit; 50: an X-ray generating unit; 51: an alternating current power supply; 52: an ammeter; 53: a temperature sensor; 54: a posture sensor; 70: a management device; 71: a storage unit; 72: a consumption degree detection unit; 73: an adhesion amount estimating unit; 74: a creeping discharge estimating section; 75: a dose estimation section; 76: a line quality estimation unit; 77: a history storage unit; d: an operator; m: a subject to be examined; r1: an operation chamber; r2: an examination room.