JP2013198519A - Image diagnostic device and image storage communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image diagnostic device and an image storage communication system including the device, wherein a user can easily ascertain that each of components of a movable section should be replaced due to secular changes.SOLUTION: An image diagnostic device (10) includes a data storage section (20a), an operation amount computing section (20c), and a determining section (20b). The data storage section stores the lifetime operation amount the extent to which the summed operation amount of the movable section is required to replace at least some components of the movable section. The operation computing section calculates the summed operation amount when the movable section works. The determining section determines the timing in which at least some components of the movable section should be replaced on the basis of the lifetime operation amount and the summed operation amount.

Description

  Embodiments described herein relate generally to an image diagnostic apparatus and an image storage communication system.

  As an image diagnostic apparatus, for example, an X-ray diagnostic apparatus, an X-ray CT apparatus, a magnetic resonance imaging apparatus, and the like are widely used. In the diagnostic imaging apparatus, a part of the apparatus is configured as a movable part in order to image a desired part of a subject (see, for example, Patent Document 1).

  In the case of an X-ray diagnostic apparatus, an X-ray generation unit and an X-ray detection unit are attached to both ends of a C arm, for example, and the C arm moves, rotates, or rotates around the subject, The shooting angle is adjusted. Further, the subject is placed on the top plate of the X-ray diagnostic apparatus, and the position of the subject at the time of imaging is adjusted by moving the top plate in the vertical direction or the horizontal direction.

  In the case of a magnetic resonance imaging apparatus, for example, the couch top is configured to be slidable in the axial direction of a cylindrical gantry, and the imaging region of the subject on the couch is positioned near the magnetic field center in the gantry. Thus, the top plate movement is controlled.

JP 2007-82681 A

  In the prior art, even if the moving parts of the diagnostic imaging device reach the service life limit due to wear or other wear, the service life limit has been reached only by a phenomenon that seems to have reached the service life limit such as abnormal noise or error. There was no way to know.

  Therefore, there has been a demand for a technique that makes it easy to determine whether or not it is time to replace parts of the movable part in an image diagnostic apparatus and an image storage communication system including the image diagnostic apparatus.

An image diagnostic apparatus according to an embodiment is configured such that at least a part of the apparatus is configured as a movable part, and the target part of the subject is imaged by moving the movable part. A calculation unit and a determination unit are provided.
The data storage unit stores, as a durable operation amount, how much the accumulated operation amount of the movable unit reaches should at least a part of the movable unit be replaced.
The operation amount calculation unit calculates the integrated operation amount when the movable unit moves.
The determination unit makes a determination as to when to replace at least some of the components of the movable unit based on the durable operation amount and the integrated operation amount.

  An image storage communication system according to an embodiment includes the image diagnostic apparatus, a server that stores image data of a subject generated by the image diagnostic apparatus, and a display terminal that displays image data acquired from the server. In this image archiving communication system, when the accumulated operation amount exceeds a predetermined value, the image diagnostic apparatus transmits information indicating that the predetermined value has been exceeded to an external service center.

The functional block diagram of the X-ray diagnostic apparatus of 1st Embodiment. 1 is a schematic perspective view of an X-ray diagnostic apparatus according to a first embodiment. The typical perspective view which shows an example of a worm gear. The plane schematic diagram which shows the example of two gearwheels to which rotational motion is transmitted by meshing | engaging with each other. The table | surface which shows an example of the integrated operation amount in the case of a rotational motion. The plane schematic diagram which shows the example which replaces the relative positional relationship in an apparatus with the part with early consumption and the slow part in a gearwheel. The table | surface which shows an example of the integrated operation amount of the left-right movement of the top plate shown by A4 of FIG. The flowchart which shows an example of the flow of the process in the X-ray diagnostic apparatus in connection with the update of integrated operation amount. The functional block diagram of the magnetic resonance imaging apparatus of 2nd Embodiment. The block diagram of the image storage communication system of 3rd Embodiment.

  In order to solve the above-described problems, the present inventor has devised the following configuration. That is, it is stored in advance in the apparatus as the durable operation amount, when the accumulated operation amount of the movable part of the apparatus reaches to which part of the movable part should be replaced. When the movable part moves, the operation amount is calculated as the current operation amount, and the accumulated operation amount is updated by adding the current operation amount to the previous accumulated operation amount. In this case, if the notification is made when the integrated operation amount reaches a predetermined value (a value smaller than the durable operation amount), the operator can easily determine whether or not it is time to replace the parts of the movable part. .

  This specification discloses the epoch-making technical idea described above, and in the following first embodiment, an example in which the technical idea is applied to an X-ray diagnostic apparatus as an example of an image diagnostic apparatus will be described. In the second embodiment, an example in which the technical idea is applied to a magnetic resonance imaging apparatus will be described. In the third embodiment, an example in which the technical idea is applied to an image archiving communication system will be described. In addition, in each figure, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted.

(First embodiment)
FIG. 1 is a functional block diagram of the X-ray diagnostic apparatus 10. As shown in FIG. 1, the X-ray diagnostic apparatus 10 includes a system control unit 20, an input unit 22, a display unit 24, an image processing unit 26, an image data storage unit 28, an image data generation unit 30, Imaging unit rotation mechanism 32, X-ray detector 34, C-arm 36, top plate 38, aperture device 40, X-ray tube 42, high voltage generator 44, aperture control mechanism 46, ceiling A plate moving mechanism 48, a C-arm operating mechanism 50, and a detector moving mechanism 54 are provided.

A subject P is placed on the top plate 38.
The C arm 36 is an arm that holds the X-ray tube 42, the diaphragm device 40, and the X-ray detector 34. By the C arm 36, the X-ray tube 42, the diaphragm device 40, and the X-ray detector 34 are arranged so as to face each other with the subject P interposed therebetween.

The high voltage generator 44 generates a high voltage and supplies the generated high voltage to the X-ray tube 42.
The X-ray tube 42 generates X-rays using the high voltage supplied from the high voltage generator 44.
The diaphragm device 40 narrows the generated X-ray so that the region of interest of the subject P is selectively irradiated by, for example, sliding a plurality of diaphragm blades.

  The aperture control mechanism 46 controls the X-ray irradiation range by adjusting the aperture of the aperture blades of the aperture device 40. The mechanical operations of the aperture control mechanism 46, the top plate moving mechanism 48, the C arm operating mechanism 50, the detector moving mechanism 54, and the photographing unit rotating mechanism 32 will be described with reference to FIG.

  The X-ray detector 34 converts, for example, X-rays transmitted through the subject P into electric signals and stores them by using X-ray detection elements arranged in a matrix, for example, and inputs the stored electric signals to the image data generation unit 30. To do.

  The image data generation unit 30 generates image data of an X-ray image using the electrical signal input from the X-ray detector 34 and stores the generated image data in the image data storage unit 28.

  The image processing unit 26 performs various types of image processing on the image data of the X-ray image stored in the image data storage unit 28.

  The display unit 24 displays a GUI (Graphical User Interface) for receiving a command from the operator via the input unit 22, an X-ray image subjected to image processing by the image processing unit 26, and the like.

  The input unit 22 has a keyboard, buttons, and the like for an operator to input shooting conditions and various commands, and transfers input contents to the system control unit 20.

  The system control unit 20 controls the entire X-ray diagnostic apparatus 10 in setting of imaging conditions, imaging operation, and display processing. One of the features of the present embodiment is that the data storage unit 20a, the determination unit 20b, and the operation amount calculation unit 20c are provided in the system control unit 20. The data storage unit 20a, the determination unit 20b, and the operation amount calculation unit 20c determine whether or not the integrated operation amount of the movable unit has reached a predetermined value (for example, the replacement guide operation amount). Each movable part will be described in detail with reference to FIGS.

  FIG. 2 is a schematic perspective view of the X-ray diagnostic apparatus 10. FIG. 2 shows, for example, a portion arranged in the radiographing room in the X-ray diagnostic apparatus 10, and a portion arranged in, for example, the control room such as the input unit 22 and the display unit 24 is not shown.

  The X-ray diagnostic apparatus 10 includes a main body unit 12 and an imaging unit 14. In FIG. 2, the part whose outer shape is indicated by a thick line is the main body part 12, and the other part is the photographing unit 14.

  The main body 12 is fixed to, for example, a floor or a wall of a photographing room. In the main body 12, a part of the system control unit 20 in FIG. 1 and a part of the photographing unit rotation mechanism 32 are provided.

  The imaging unit 14 refers to the entire X-ray detector 34, C-arm 36, top plate 38, aperture device 40, and X-ray tube 42, and is fixed to the main body 12 so as to be rotatable. The photographing unit 14 includes a diaphragm control mechanism 46, a top plate moving mechanism 48, a C-arm operating mechanism 50, a detector moving mechanism 54, and a part of the photographing unit rotating mechanism 32.

  Here, the X-axis, Y-axis, and Z-axis that are orthogonal to each other in the apparatus coordinate system of the X-ray diagnostic apparatus 10 are defined as follows. First, the vertical direction is the Y-axis direction, and the top plate 38 is arranged so that the normal direction of the surface on which the subject is placed is the Y-axis direction. The longitudinal direction of the top plate 38 is the Z-axis direction. Hereinafter, the operation of each movable part indicated by reference numerals A1 to A9 in the drawing will be described. In the following description, the X axis, the Y axis, and the Z axis are the apparatus coordinate system.

  A1 shows a tilting operation for rotating the photographing unit 14 in the YZ plane. The raising / lowering operation is realized by the photographing unit rotating mechanism 32 under the control of the system control unit 20.

  A <b> 2 is an operation of moving the imaging unit 14 up and down (up and down) in the Y-axis direction (vertical direction), and is realized by the imaging unit rotation mechanism 32 under the control of the system control unit 20.

  A3 is an operation of moving the top plate 38 up and down in the Y-axis direction, and is realized by the top plate moving mechanism 48 under the control of the system control unit 20.

  A4 indicates the left-right movement of the top plate that moves the top plate in the X-axis direction, and is realized by the top plate moving mechanism 48 under the control of the system control unit 20.

  A5 indicates an operation of moving the C arm 36 in the Z-axis direction, and is realized by the C arm operating mechanism 50 under the control of the system control unit 20.

  A6 indicates the rotation operation of the C arm 36 in the YZ plane, and is realized by the C arm operation mechanism 50 under the control of the system control unit 20.

  A <b> 7 indicates the rotation operation of the C arm 36 in the XY plane, and is realized by the C arm operation mechanism 50 under the control of the system control unit 20.

  A8 is an operation of moving the X-ray detector 34 up and down in the Y-axis direction, and is realized by the detector moving mechanism 54 under the control of the system control unit 20.

  A9 indicates the rotation operation of the diaphragm device 40 in the XZ plane, and is realized by the diaphragm control mechanism 46 under the control of the system control unit 20.

  The aperture device 40 is configured to be rotatable around the irradiation axis by a rotation mechanism such as a worm gear, for example.

  FIG. 3 is a schematic perspective view showing an example of the worm gear 64. The worm gear 64 is a rotational motion transmission mechanism including a worm 66 (input side) having a tooth surface and a worm wheel 68 (output side) having a tooth surface meshing therewith. Each time the operation is performed, the tooth surfaces of the worm 66 and the worm wheel 68 come into contact with each other and wear of the tooth surfaces is promoted, so that the end of the worm gear 64 is approached.

  In addition, the aperture control mechanism 46, the top plate moving mechanism 48, the C arm operating mechanism 50, the detector moving mechanism 54, and the photographing unit rotating mechanism 32 each realize the operation of any one of the above-described A1 to A9. For example, each has a plurality of gears meshing with each other.

  FIG. 4 is a schematic plan view showing an example of two gears 70 and 72 to which rotational motion is transmitted by meshing with each other. Also in this case, the tooth of the gear 70 and the tooth of the gear 72 come into contact with each other and the wear of the tooth surface is promoted, so that the end of the gears 70 and 72 is approached.

  Here, returning to FIG. 1, each component in the system control unit 20 will be described in more detail.

  The data storage unit 20a stores, as a durable operation amount, how much the accumulated operation amount of the movable unit of the X-ray diagnostic apparatus 10 should be replaced. The “movable part” refers to a mechanically moving part such as the C arm 36, the top plate 38, the X-ray detector 34, the aperture device 40, and the imaging unit 14.

  Further, the “part replacement” may be an entire replacement of the movable part (replacement of the unit) or only a worn part. Consumption means, for example, tooth surface wear due to contact between a plurality of gears. Therefore, as the replacement of the movable part, only the gear may be replaced, or the entire unit (the entire one movable part) such as the aperture control mechanism 46 may be replaced.

  The durable motion amount is, for example, the upper limit value of the motion amount estimated that each movable part operates safely without abnormality. As an example of the movable part that rotates, consider a case in which a tilting operation (A1 in FIG. 2) that rotates the photographing unit 14 in the YZ plane is possible in a range of −180 ° to 180 °. In such a case, as a load test, for example, the imaging unit 14 is rotated 360 ° in the positive direction from −180 ° to + 180 °, then rotated 360 ° in the reverse direction (negative direction), and then in the positive direction. The rotation over the entire movable region such as 360 ° is repeated.

  As a result of this load test, the mechanically operating portion in the photographing unit rotating mechanism 32 approaches the service life limit due to the wear of the gears described above. The value obtained by multiplying the operation amount at the time when an abnormality occurs somewhere in the photographing unit rotation mechanism 32 by a predetermined ratio (for example, 70%, 80%, 90%, etc.) less than 100% It can be an amount. The values of 70%, 80%, and 90% are merely examples for reference, and do not limit the present invention.

  Further, as an example of the movable portion that moves in a predetermined direction, consider a case where the top plate 38 is movable in the range of −200 mm to 280 mm in the X-axis direction (corresponding to A4 in FIG. 2). In this case, as the load test, for example, the operation of moving the top plate 38 from the position of −200 mm to +280 mm in the positive direction of the X axis and then returning it to the position of −200 mm is repeated. That is, as a load test, the movement over the entire movable region is repeated. By this load test, a value obtained by multiplying the operation amount at the time of occurrence of an abnormality somewhere in the top plate moving mechanism 48 by the predetermined ratio smaller than 100% may be set as the durable operation amount.

  By carrying out the load test separately for each movable part in this way, the durable operation amount for each movable part is determined in advance. For example, before the shipment of the X-ray diagnostic apparatus 10, the durable operation amount is stored in advance in the form of table data or the like in the data storage unit 20 a for each movable unit. In other words, for the rotating movable part, the data storage unit 20a stores, as a durable operation amount, how much the amount of rotation of the gear or the like in the movable part should be replaced. It will be.

  The operation amount calculation unit 20c has a storage area 60 therein. The storage area 60 stores (latest) accumulated operation amount for each movable part. In the example of the X-ray diagnostic apparatus 10, when the movable part moves, the imaging unit rotation mechanism 32, the diaphragm control mechanism 46, the top panel control mechanism 48, the C arm operation mechanism 52, and the detector movement mechanism 54 are moved from the system control unit 20. An operation command is transmitted to either. When the movable portion moves, the motion amount calculation unit 20c calculates the motion amount of the motion itself as the current motion amount based on the content of the motion command.

  Furthermore, the operation amount calculator 20c updates the integrated operation amount by adding the calculated current operation amount to the latest integrated operation amount. The storage area 60 stores the accumulated operation amount updated in this way. In the present embodiment, as an example, the operation amount calculation unit 20c divides the movable range of the movable unit into each rotation position at a rotation angle with respect to the rotating movable unit, and calculates the integrated operation amount by the number of uses for each rotation position. To do. Further, as an example in the present embodiment, the operation amount calculation unit 20c divides the movable range of the movable unit into each moving position by distance with respect to the movable unit moving in a predetermined direction, and accumulates the number of uses for each moving position. Calculate the amount of motion.

  Here, an image diagnostic apparatus such as the X-ray diagnostic apparatus 10 may return to the reference position after the operation accompanying imaging is completed and before the apparatus is turned off. The operation amount calculation unit 20c includes an operation for returning to such a reference position and an integrated operation amount. In this case, for example, the operation amount calculating unit 20c synchronizes with the timing when the instruction to return to the reference position is transmitted from the system control unit 20 to the drive system of the movable unit such as the top plate moving mechanism 48 (the current operation amount ( The accumulated operation amount may be updated by adding (for example, once) to the accumulated operation amount.

  The “cumulative operation amount of the movable part” means, for example, how much the movable part has been used since it was incorporated into an apparatus such as an X-ray diagnostic apparatus in an unused state or a new state. That is, the “cumulative operation amount of the movable part” means, for example, a cumulative operation amount from an unused state or a new state to the present. Therefore, when the entire unit of the movable part is replaced, it is desirable that the operation amount calculation unit 20c resets the integrated operation amount of the movable part to zero.

  The “motion amount” in the “current motion amount” and “integrated motion amount” is, for example, the number of uses, the rotation angle, and the movement distance. In the case of a rotary movable unit, the “integrated operation amount” may be a form in which, for example, the amount of rotation of an internal gear is integrated at a rotation angle every time it is used, instead of the number of uses for each rotation position.

  In addition, the determination unit 20b determines a predetermined value that is less than the durable motion amount, for example, a value such as 70%, 80%, or 90% of the durable motion amount for each movable portion as a replacement guide motion amount. The numerical values such as 70%, 80%, and 90% here are merely examples, and do not limit the present invention.

  The determination unit 20b determines (compares) whether or not the operation amount calculation unit 20c updates the integrated operation amount of the movable unit, so that the integrated operation amount of the movable unit becomes equal to or greater than the replacement guide operation amount. When the integrated operation amount is equal to or greater than the replacement guide operation amount, the determination unit 20b displays the fact on the display unit 24, thereby performing the first-stage warning process. With regard to warning processing, for example, the location of the moving part that exceeds the replacement target operation amount is displayed as an identification warning in the overall system diagram, or the name of the corresponding portion is displayed and the replacement operation amount is reached. A warning message may be displayed.

  The function of the display unit 24 that performs the warning display and the function of the determination unit 20b that commands the warning display may be regarded as a notification unit that prompts replacement of at least some of the components of the movable unit. The “notification for prompting replacement of at least a part of the movable part” is not limited to the warning display as described above, and may be performed, for example, by voice.

  When it is determined that the integrated operation amount is greater than or equal to the replacement target operation amount, the determination unit 20b determines whether or not the integrated operation amount of the movable unit is greater than or equal to the durable operation amount. When the integrated operation amount is equal to or greater than the durable operation amount, the determination unit 20b performs a second-stage warning process. As the warning process in the second stage, for example, information that identifies the movable part that has reached the durable motion amount and the fact that the durable motion amount has been reached may be displayed on the display unit 24 as a warning. Alternatively, as a warning process in the second stage, after the operation of the entire X-ray diagnostic apparatus 20 is safely forcibly stopped, information for identifying a movable part that has exceeded the durable operation amount is displayed on the display unit 24 as a warning. Also good.

  In addition, although the example which makes a warning process 2 steps | paragraphs according to an integrated operation amount as an example is described here, embodiment of this invention is not limited to this aspect. The warning process may be performed only in one stage when the replacement target operation amount or more is reached, or may be performed in three or more steps according to the integrated operation amount.

FIG. 5 is a table showing an example of the cumulative operation amount of the rotary motion as the upside-down operation indicated by A1 in FIG. In the present embodiment, as an example, in the case of a movable part that rotates, the movable range is divided into rotational positions in units of 1 °, and the operation amount is integrated by the number of times of use for each rotational position.
In the data of FIG. 5, it can be determined that the vicinity of 0 ° is frequently used, and the maximum rotation angles (near −180 ° and + 180 °) are hardly used. In this way, each time the movable part is operated, the current operation amount is calculated and added to update the integrated operation amount for each rotational position, so that the user can determine how close the movable part component is to the service life limit. Can be determined according to the operation.

  In the case of a user who performs only a specific operation, only a specific part is consumed. Rather than simply integrating the amount of rotation, the degree of wear can be determined for each region in the motion transmitting component such as a gear by integrating the number of uses for each rotational position. In other words, it is possible to specify a place where the wear of the motion transmission component is fast and a place where the wear is slow.

  FIG. 6 is a schematic plan view illustrating an example in which the relative positional relationship in the apparatus is switched between a portion where the wear of the gear is early and a portion where the wear is slow. In the case of the integrated operation amount as shown in FIG. 5, for example, after the gear is once removed, it is replaced so that the rapidly worn tooth that was at the 0 ° rotation position is at the 180 ° rotation position. In FIG. 6, the teeth corresponding to the rotation positions of 0 ° and 180 ° are shown in black.

  In this case, the accumulated operation amount data for each rotation position stored in the data storage unit 20a may be similarly replaced between the rotation positions. In this way, the life of the motion transmitting component can be extended by exchanging the relative positional relationship in the apparatus between the part that is consumed quickly and the part that is consumed slowly.

  FIG. 7 is a table showing an example of the accumulated movement amount of the left-right movement of the top board 38 indicated by A4 in FIG. Here, as an example, in the case of movement in a predetermined direction, the movable range of the movable part is divided into respective movement positions in units of 1 mm, and the operation amount is integrated by the number of times of use for each movement position. In the example of FIG. 7, the top plate 38 is movable in the range of −200 mm to +280 mm in the X-axis direction. From the data in FIG. 7, the number of times of use and the accumulated operation amount are relatively large near 0 mm corresponding to the reference position, and the number of times of use and the accumulated operation amount are relatively small at the movement positions at both ends of the movable range.

  FIG. 8 is a flowchart illustrating an example of a processing flow inside the X-ray diagnostic apparatus 10 related to the update of the accumulated operation amount. Hereinafter, an example of the operation related to the update of the integrated operation amount will be described according to the step numbers shown in FIG.

  [Step S1] As part of imaging preparation and imaging operation by the X-ray diagnostic apparatus 10, the system controller 20 drives the driving mechanism (imaging unit rotation mechanism 32, aperture control mechanism 46, top panel control mechanism 48, C arm operation mechanism. 50, at least one of the detector moving mechanisms 54). Thereafter, the process proceeds to step S2.

  [Step S2] The motion amount calculator 20c calculates the motion amount of the motion itself as the current motion amount based on the content of the motion command in Step S1. The motion amount calculator 20 c updates the cumulative motion amount by adding the calculated current motion amount to the cumulative motion amount stored in the storage area 60. The storage area 60 updates (stores again) the accumulated operation amount being stored to the accumulated operation amount newly calculated by the operation amount computing unit 20c. Thereafter, the process proceeds to step S3.

  [Step S3] The determination unit 20b determines whether or not the integrated operation amount of each movable unit is equal to or greater than the replacement guide operation amount. If the determination result is affirmative, the process proceeds to step S4. If the determination result is negative, the process proceeds to step S5.

  [Step S4] The determination unit 20b causes the display unit 24 to execute the warning process described above. When the integrated operation amount is equal to or greater than the replacement target operation amount but less than the durable operation amount, the determination unit 20b causes the above-described first stage warning display to be executed, and when the accumulated operation amount is equal to or more than the durable operation amount, The determination unit 20b may perform the second-stage warning process described above. Thereafter, the process proceeds to step S6.

  [Step S5] In this case, the warning process is not performed, and the movable part operates according to the operation command in Step S1. Thereafter, the process proceeds to step S6.

  [Step S6] The next operation command is transmitted from the system control unit 20 to the drive mechanism, and thereafter the same operation as in steps S1 to S5 is performed.

  Note that the timing for performing the warning process is not limited to the execution of the shooting sequence or the shooting preparation sequence as described above. For example, the warning process may be performed immediately after the X-ray diagnostic apparatus 10 is turned on, avoiding the execution of the imaging sequence or the imaging preparation sequence. Alternatively, after one shooting sequence or one shooting preparation sequence ends, warning processing may be performed before the next sequence is executed. In addition, the operation of imaging and generating an X-ray image by imaging the target region of the subject P in the X-ray diagnostic apparatus 10 is the same as that of the prior art except for the processing related to the update of the accumulated operation amount described above. Since it is good, detailed description is omitted.

  As described above, the X-ray diagnostic apparatus 10 according to the first embodiment quantitatively calculates and updates the degree of wear for each movable part as an integrated operation amount, stores the integrated operation amount, and the integrated operation amount is an exchange guideline. When the operation amount is reached, warning processing is executed. Accordingly, by appropriately replacing the consumable part of the movable part pointed out in the warning process, the part is replaced before reaching the service life limit. As a result, failure of the apparatus can be prevented in advance, and the timing of parts replacement and the frequency of periodic inspection can be optimized.

  Since how to use the apparatus varies from user to user, the way in which the parts of the movable part are consumed is not constant. Therefore, in the first embodiment, since the integrated operation amount is calculated as the number of uses for each rotational position or the number of uses for each movement position, the integrated operation amount is in accordance with the use state of the user. With such a calculation method, it is possible to determine the degree of wear for each region in a motion transmission component such as a gear. Therefore, for example, in the case of a gear, the life of the gear can be extended by exchanging the relative positional relationship in the apparatus between the early consumption part and the late consumption part as described in FIG.

  That is, in the first embodiment, it is possible to predict when the parts of the movable part due to wear and other wear should be replaced, so it is easy to determine in real time whether or not the parts of the movable part should be replaced. I can judge.

  In the prior art, there is no means for quantitatively examining how much the moving part is used in the diagnostic imaging apparatus, and even if the parts of the moving part exceed the service life limit, it will reach the service life limit such as abnormal noise or error. There was no way to know it only by the phenomenon that seemed to have reached.

(Second Embodiment)
FIG. 9 is a functional block diagram of the magnetic resonance imaging apparatus of the second embodiment. As shown in FIG. 9, the MRI apparatus 120 includes a cylindrical static magnetic field magnet 122, a cylindrical shim coil 124, an X-axis gradient magnetic field coil 126x, a Y-axis gradient magnetic field coil 126y, and a Z-axis gradient magnetic field coil 126z. And an RF (Radio Frequency) coil 128, a control device 130, and a top board 132 on which the subject P is placed.

  The apparatus coordinate system is the same as that of the first embodiment, for example. That is, the vertical direction is the Y-axis direction, and the top plate 132 is arranged so that the normal direction of the mounting surface is the Y-axis direction. Further, the longitudinal direction of the top plate 132 is taken as the Z-axis direction. The top plate 132 is configured to move in the gantry along the Z-axis direction and to move in the opposite direction. A gantry is a structure formed in a cylindrical shape, for example, so as to include a static magnetic field magnet 122, a shim coil 124, a gradient magnetic field coil 126, and an RF coil 128. Since it becomes complicated in FIG. 1, components such as the static magnetic field magnet 122 in the gantry are illustrated, and the gantry itself is not illustrated.

  The control device 130 includes a static magnetic field power supply 140, a shim coil power supply 142, an X-axis gradient magnetic field power supply 144x, a Y-axis gradient magnetic field power supply 144y, a Z-axis gradient magnetic field power supply 144z, an RF transmitter 146, and an RF receiver 148. A top controller 150, a sequence controller 156, an arithmetic device 160, an input device 162, a display device 164, and a storage device 166.

  The static magnetic field magnet 122 forms a static magnetic field in the imaging space by a current supplied from the static magnetic field power supply 140. The shim coil 124 equalizes this static magnetic field by the current supplied from the shim coil power supply 142.

  The X-axis gradient magnetic field coil 126x, the Y-axis gradient magnetic field coil 126y, and the Z-axis gradient magnetic field coil 126z are respectively supplied with current supplied from the X-axis gradient magnetic field power supply 144x, the Y-axis gradient magnetic field power supply 144y, and the Z-axis gradient magnetic field power supply 144z. An X-axis gradient magnetic field Gx, a Y-axis gradient magnetic field Gy, and a Z-axis gradient magnetic field Gz are formed in the imaging region.

  Based on the control information input from the sequence controller 156, the RF transmitter 146 generates a Larmor frequency RF pulse (Radio Frequency Pulse) that causes nuclear magnetic resonance, and transmits this to the RF coil 128 for transmission.

  The sequence controller 156 moves the top board 132 by controlling the top board driving device 150 in accordance with a command from the arithmetic unit 160.

  The arithmetic device 160 sets the imaging condition according to the content input by the user to the input device 162. When an imaging start instruction is input from the input device 162 to the arithmetic device 160, the arithmetic device 160 inputs a pulse sequence to the sequence controller 156. The sequence controller 156 drives each part in accordance with a pulse sequence to form a static magnetic field, an X-axis gradient magnetic field Gx, a Y-axis gradient magnetic field Gy, and a Z-axis gradient magnetic field Gz, and generate an RF pulse from the RF coil 128.

For this reason, a magnetic resonance signal generated by nuclear magnetic resonance in the target region of the subject P is received by the RF coil 128 and detected by the RF receiver 148. The RF receiver 148 performs predetermined signal processing on the detected magnetic resonance signal, and then performs A / D conversion to generate raw data that is a digitized magnetic resonance signal. The RF receiver 148 inputs the raw data to the arithmetic device 160 via the sequence controller 156.
The arithmetic device 160 arranges the raw data as k-space data, and then performs image reconstruction processing including Fourier transform on the k-space data to reconstruct the image data of the target part of the subject P, and stores the image data. Save to 166. The arithmetic device 160 displays the obtained image data on the display device 164 as a captured image.

  The main features of the second embodiment are as follows. That is, the calculation device 160 includes a data storage unit 20a ′, a determination unit 20b ′, and an operation amount calculation unit 20c ′ that function in the same manner as the data storage unit 20a, determination unit 20b, and operation amount calculation unit 20c of the first embodiment. Have

  The data storage unit 20 a ′ stores the durable operation amount of the top board 132. When the top plate driving device 150 moves the top plate 132, the operation amount calculation unit 20c 'updates the integrated operation amount by calculating and adding the current operation amount in the same manner as in the first embodiment. The determination unit 20b 'executes a warning process when the integrated operation amount reaches the replacement guide operation amount. Therefore, also in the second embodiment, the same effect as that of the first embodiment can be obtained.

  The technical idea of the first embodiment is not limited to the X-ray diagnostic apparatus and the magnetic resonance imaging apparatus, and can be applied to other diagnostic apparatuses having a movable portion that moves by contact between a plurality of components. For example, the present invention can be applied to a gantry rotation mechanism for adjusting the tilt angle and the movement of a couch top in an X-ray CT apparatus (X-Ray Computed Tomography).

(Third embodiment)
FIG. 10 is a block diagram of an image archiving communication system 200 to which the technical idea of the first embodiment is applied. In the image archiving communication system 200, a plurality of display terminals 210, a server 220, and a plurality of modalities (10, 120, 240) are connected to each other via a communication cable 230. The image storage communication system 200 is also connected to an external service center 290 via a communication cable 230.

  Here, as an example of the modality, the X-ray diagnostic apparatus 10 of the first embodiment, the magnetic resonance imaging apparatus 120 of the second embodiment, and the X-ray CT apparatus 240 are connected. Alternatively, different modalities may be connected.

  The X-ray CT apparatus 240 includes an X-ray CT mechanism 242, a system control unit 244, a storage device 246, a display device 248, and a system bus 252 that connects them to each other.

The X-ray CT mechanism 242 performs computer tomography by irradiating the subject P with X-rays, detects X-rays transmitted through the subject P, and performs predetermined processing on the projection data to thereby detect the subject P. Image data of the target part is generated, and the image data is stored in the storage device 246.
The display device 248 displays the image data as an image.

  The system control unit 244 performs system control of the X-ray CT apparatus 240 at the time of computer tomography. The system control unit 244 includes a data storage unit 20a ″, a determination unit 20b ″, and an operation amount calculation unit 20c ″ that function in the same manner as the data storage unit 20a, determination unit 20b, and operation amount calculation unit 20c of the first embodiment. Have.

  The data storage unit 20a ″ stores a durable operation amount of a top plate (not shown) of the X-ray CT apparatus 240 and a gantry rotation mechanism (not shown). In the case of movement, the motion amount calculation unit 20c ″ updates the accumulated motion amount by calculating and adding the current motion amount in the same manner as in the first embodiment. The determination unit 20b ″ causes the display device 248 to execute a warning process when the accumulated operation amount reaches the replacement guide operation amount.

  The system control unit 20 of the X-ray diagnostic apparatus 20, the arithmetic unit 160 of the magnetic resonance imaging apparatus 120, and the system control unit 244 of the X-ray CT apparatus 240 each transmit the generated image data to the server 220. The server 220 saves (stores) the transmitted image data.

  The server 220 searches the stored image data for image data that matches the transmission request input from the display terminal 210, and transmits the corresponding image data to the display terminal 210. The display terminal 210 displays the image data transmitted from the server 220 as an image.

  In the third embodiment, each determination unit 20b, 20b ′, 20b ″ in the X-ray diagnostic apparatus 20, the magnetic resonance imaging apparatus 120, and the X-ray CT apparatus 240 has a case where the accumulated operation amount reaches the replacement target operation amount. , To that effect is transmitted to the service center 290 via the communication cable 290.

  That is, when the movable part of the modality reaches the replacement target operation amount, this is notified to the operator of the modality by a warning display, and the service center 290 also shares the same information. Therefore, in the third embodiment, in addition to obtaining the same effects as those of the first embodiment, it is possible to quickly arrange parts to be replaced of the movable part.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 X-ray diagnostic apparatus 12 Main body part 14 Imaging unit 20 System control part 20a Data storage part 20b Determination part 20c Operation amount calculating part 22 Input part 24 Display part 26 Image processing part 28 Image data storage part 30 Image data generation part 32 Imaging unit Rotating mechanism 34 X-ray detector 36 C arm 38 Top plate 40 Aperture device 42 X-ray tube 44 High voltage generator 46 Aperture control mechanism 48 Top plate moving mechanism 50 C arm operating mechanism 54 Detector moving mechanism 60 Storage area 64 Warm gear 66 Worm 68 Worm wheel 70, 72 Gear 120 Magnetic resonance imaging apparatus 200 Image storage communication system 210 Display terminal 220 Server 240 X-ray CT apparatus 290 Service center

Claims (8)

At least a part of the apparatus is configured as a movable part, and is an image diagnostic apparatus that images a target portion of a subject by moving the movable part,
A data storage unit for storing at least a part of the movable unit as a durable operation amount when the accumulated operation amount of the movable unit is reached;
When the movable part moves, an operation amount calculation unit that calculates an integrated operation amount;
An image diagnostic apparatus comprising: a determination unit configured to determine when to replace at least some of the components of the movable unit based on the durable operation amount and the integrated operation amount. The motion amount calculation unit has a storage area for storing the calculated cumulative motion amount, and when the movable part moves, the motion amount of the movement is calculated as the current motion amount and stored in the storage area. The diagnostic imaging apparatus according to claim 1, wherein the integrated operation amount is updated by adding the current operation amount to the integrated operation amount. The said operation amount calculating part calculates an integrated operation amount by the frequency | count of use for every rotation position of the said movable part divided | segmented with the rotation angle with respect to the said movable part to rotate. 2. The diagnostic imaging apparatus according to 2. The said operation amount calculating part calculates an integrated operation amount by the frequency | count of use for every movement position divided | segmented by the movement distance with respect to the said movable part which moves to a predetermined direction. The diagnostic imaging apparatus according to any one of the above. The movable part has a plurality of gears meshing with each other,
5. The data storage unit stores, as the durable operation amount, how much the amount of rotation of the gear reaches when the gear is to be replaced. 6. The diagnostic imaging apparatus according to claim 1.   The information processing apparatus according to claim 1, further comprising a notification unit configured to notify the user of replacement of at least a part of the movable unit when the integrated operation amount calculated by the operation amount calculation unit exceeds a predetermined value. The diagnostic imaging apparatus according to any one of claims 1 to 5. The diagnostic imaging apparatus according to any one of claims 1 to 6, wherein the diagnostic imaging apparatus is any one of an X-ray CT apparatus, an X-ray diagnostic apparatus, and a magnetic resonance imaging apparatus. An image storage communication system comprising: an image diagnostic apparatus; a server that stores image data of a subject generated by the image diagnostic apparatus; and a display terminal that displays image data acquired from the server,
The image diagnostic apparatus according to claim 6, wherein when the integrated operation amount exceeds a predetermined value, information indicating that the predetermined value is exceeded is transmitted to an external service center. Image storage communication system.

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