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WO2016137032A1 - Dispositif d'affichage de l'heure et dispositif de synchronisation d'un système à rayons x - Google Patents

Dispositif d'affichage de l'heure et dispositif de synchronisation d'un système à rayons x Download PDF

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Publication number
WO2016137032A1
WO2016137032A1 PCT/KR2015/001838 KR2015001838W WO2016137032A1 WO 2016137032 A1 WO2016137032 A1 WO 2016137032A1 KR 2015001838 W KR2015001838 W KR 2015001838W WO 2016137032 A1 WO2016137032 A1 WO 2016137032A1
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Prior art keywords
information
controller
image
ray
ray system
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Ceased
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PCT/KR2015/001838
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English (en)
Korean (ko)
Inventor
신동준
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Tplus Co Ltd
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Tplus Co Ltd
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Priority to PCT/KR2015/001838 priority Critical patent/WO2016137032A1/fr
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Anticipated expiration legal-status Critical
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment

Definitions

  • the present invention relates to a visual display device and a synchronization device of a computed radiography (CR) x-ray system.
  • CR computed radiography
  • Diagnostic equipment generally popularized as radiation-related equipment is an X-ray system. X-ray systems are used to visualize anatomical structures and to detect the presence of pathologies, diseases or abnormal anatomical structures.
  • the X-ray system may be classified into a film, a CR, and a digital radiography method according to an image acquisition method.
  • the film method is the most common photographing method for X-ray imaging. X-rays passing through a subject form a latent image on the photosensitive film, and the photosensitive film is developed by chemical treatment in a dark room to visualize the image.
  • an image plate (IP) cassette made of accumulator phosphors (or photomagnetic phosphors) instead of the photosensitive film is used in the film method.
  • IP image plate
  • the IP cassette When it is stored in the form of energy and stored as a latent image, and when the IP cassette is inserted into the image reader and subjected to laser light, it emits light according to the amount of X-rays incident on the IP cassette, and the reader emits light. Is converted into an electrical signal and then converted into a digital image.
  • the DR method includes a camera method and a panel method using a charge-coupled device (CCD).
  • CCD charge-coupled device
  • the CCD method uses a narrow and long CCD sensor, which is divided into tiny rooms called pixels inside the CCD sensor. The intensity of the charge is determined by the amount of X-rays entering the pixel and the resulting electrical signal is digitized after passing through an analog-to-digital converter via a cable.
  • the DR method does not require a reader and can immediately obtain a digital image.
  • the X-ray system of the DR method is mainly used in a large hospital because it is more expensive than the x-ray system of the film method and the CR method, and a relatively low cost DR or film X-ray system is used in a small hospital.
  • the CR-type X-ray system must prepare a plurality of IP cassettes according to the number of shots and shoot them, and convert them into digital images through a reader (that is, a developer) provided in a space separated from the shooting place after shooting is completed. There is discomfort.
  • the CR-type X-ray system digitizes only the X-ray reader, and since it is not linked to the controller that controls the exposure amount and the shooting time of the X-ray, it is difficult to obtain information such as the exposure amount and the shooting time of the X-ray. .
  • the present invention was derived to solve the above-described problem, and to provide a visual display apparatus and a synchronization apparatus of an X-ray system capable of synchronizing exposure information and visual information to an image of a subject acquired in a CR-based X-ray system. do.
  • the visual display apparatus of the X-ray system is provided in an IP cassette used in a CR (Computed Radiography) type X-ray system, and includes a display unit for displaying at least one of an hour, a minute, and a second; It is coupled to a point and includes a point through which X-rays are not transmitted.
  • IP cassette used in a CR (Computed Radiography) type X-ray system
  • the visual display apparatus of the X-ray system may include one or more of the following embodiments.
  • the display units may be separately provided to display all of hours, minutes, and seconds.
  • the display unit includes a rotating member, a dial is provided around the rotating member, and the dial may not transmit X-rays.
  • An identification member for identifying the hour, minute, and second is provided on the display unit, and the identification member may not transmit X-rays.
  • One side of the display unit may be provided with a shield that does not transmit X-rays.
  • the display unit may include a linear moving unit capable of linearly moving.
  • the display unit includes a rotating screw, and a plurality of points may be formed around the rotating screw.
  • An image plate cassette according to an aspect of the present invention includes a visual display device of an X-ray system having the above configuration.
  • a visual display device may be attached to the outside of the image plate cassette.
  • an apparatus for synchronizing an x-ray system may include: a controller detector configured to output an exposure signal of an X-ray and detect one side of a controller that controls an operation of a generator; And a synchronization unit for acquiring visual information from the initial X-ray image information, analyzing the controller image transmitted from the controller sensor, obtaining exposure information, and synchronizing the visual information and exposure information with an image of a subject.
  • the synchronization apparatus of the X-ray system may include one or more of the following embodiments.
  • the controller detector may be a camera that photographs one surface of the controller.
  • the synchronization unit receives a controller image from the controller detector and a communication module for receiving initial X-ray image information from a reader of the X-ray system, analyzes the controller image to obtain exposure information, and analyzes the initial X-ray image information. It may include a computing module for obtaining the visual information, and a synchronization module for synchronizing the exposure information and the visual information with the image of the subject.
  • the present invention can provide a visual display device and a synchronization device of an X-ray system capable of synchronizing information on a time and an exposure amount at which a corresponding subject image is acquired with an image of a subject obtained by a CR-based X-ray system.
  • the present invention is to provide a visual display device and a synchronization device of the X-ray system that can utilize the existing CR-type X-ray system as it is.
  • FIG. 1 is a diagram illustrating an X-ray system having a synchronization device according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of the x-ray system illustrated in FIG. 1.
  • FIG. 3 is a front view illustrating a controller of the x-ray system illustrated in FIG. 1.
  • FIG. 4 is a block diagram illustrating a synchronization unit of a synchronization device according to a first embodiment of the present invention.
  • FIG. 5 is a perspective view illustrating a visual display device applied to the x-ray system illustrated in FIG. 1.
  • FIG. 6 is a plan view illustrating the visual display device illustrated in FIG. 5.
  • FIG. 7 is a diagram illustrating initial X-ray image information obtained by the X-ray system, and illustrates that a visual information image is included by the visual display device.
  • FIG. 8 is a diagram illustrating X-ray image information in which exposure amount information and visual information are synchronized with an image of a subject.
  • FIG. 9 is a plan view illustrating a visual display device according to a second exemplary embodiment of the present invention.
  • FIG. 10 is a plan view illustrating a visual display device according to a third exemplary embodiment of the present invention.
  • first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.
  • FIG. 1 is a diagram illustrating an x-ray system 110 having a synchronization device 100 according to an embodiment of the present invention
  • FIG. 2 is a block diagram of the x-ray system 110 illustrated in FIG. 1.
  • the synchronization device 100 of the X-ray system includes a controller detector 150 and a synchronizer 160.
  • the x-ray system 110 includes the synchronization device 100 according to the present embodiment and includes a generator 112, a radiator 114, a reader 118, a memory 120, and a display 122. , A communication unit 124 and a controller 130.
  • the X-ray system 110 uses the IP cassette (c) by using the CR method.
  • the radiating unit 114 of the X-ray system 110 may be provided in a separate space from the reader unit 118 and the controller 130.
  • the generator 112 generates an X-ray and then irradiates the object (not shown) through the radiator 114.
  • the generator 112 is operated by receiving a control signal from the controller 130.
  • the control signal includes a ready signal and a shot signal.
  • the generator 112 starts preparing to emit X-rays when the ready signal is input, and emits prepared X-rays when the shot signal is input.
  • the generator 112 and the controller 130 are connected by a cable L1.
  • the radiating unit 114 may be coupled to the stand 116 so as to be movable in the vertical and horizontal directions. As a result, the position of the radiator 114 with respect to the subject can be freely changed.
  • the X-ray irradiated toward the subject by the generator 112 passes through the subject to generate an image in the IP cassette (c) provided behind the subject. That is, the form of energy changed by the X-rays passing through the subject is recorded in the IP cassette c as a latent image.
  • the reader unit 118 converts the latent image recorded in the IP cassette c into initial X-ray image information, which is a digital image, and stores it in the memory unit 120.
  • the reader unit 118 irradiates a laser beam to the IP cassette c inserted therein.
  • the IP cassette c receives the laser beam, the X-ray that has penetrated the subject and entered the IP cassette c is received. The light is emitted according to the amount of.
  • the reader unit 118 converts the intensity of light emitted from the IP cassette c into an electrical signal, and then converts the initial X-ray image information, which is a digital image, and stores it in the memory unit 120.
  • the reader unit 118 initializes the latent image recorded in the IP cassette c so that the IP cassette c can be reused.
  • the reader unit 118 When the IP cassette (c) is inserted into the reader unit 118, the reader unit 118 obtains initial X-ray image information from the IP cassette (c) by the control signal of the controller 130, and the synchronization unit 160 Can be sent to.
  • the memory unit 120 may be formed integrally with the reader unit 118 or may correspond to a storage means independent of the reader unit 118.
  • the memory unit 120 may correspond to a RAM or a hard disk drive, but is not limited thereto.
  • the initial X-ray image information stored in the memory unit 120 is controlled by the controller 130 and output through the display unit 122 or externally by the communication unit 124 such as the synchronization unit 160. Can be.
  • controller 130 the controller detector 150, and the synchronizer 160 will be described with reference to FIGS. 3 to 4.
  • FIG. 3 is a front view illustrating the controller 130 of the X-ray system 110 illustrated in FIG. 1, and FIG. 4 illustrates the synchronization unit 160 of the synchronization device 100 according to the first embodiment of the present invention. It is a block diagram.
  • the controller 130 transmits a ready signal to the generator 112 to prepare for X-ray radiation, and transmits a shot signal to radiate X-rays.
  • the controller 130 transmits a control signal to the reader unit 118 to obtain initial X-ray image information from the IP cassette c, and to store it in the memory unit 120.
  • the sensing unit 150 is provided at the front of the controller 130.
  • the front of the controller 130 is provided with various displays 132, 134, 136, various lamps 138, 142, and various buttons 144, 146.
  • the front of the controller 130 is provided with a display such as an intensity display 132, an exposure display 134, a visual display 136. These displays 132, 134, and 136 may be numerically displayed to indicate intensity, exposure amount and emission time with respect to the output X-rays.
  • the information output through the displays 132, 134, and 136 becomes controller image information by the controller detecting unit 150.
  • the controller image information including an image of the number displayed on the exposure amount display 134 is transmitted to the synchronization unit 160, and the synchronization unit 160 obtains the exposure amount of the X-rays output using the controller image information.
  • the ready button 144 and the shot button 146 are provided below the displays 132, 134, and 136.
  • the ready button 144 and the shot button 146 correspond to input means for generating and outputting ready signals and shot signals.
  • the ready button 144 and the shot button 146 as described above may be generally implemented by various methods such as a button method or a switch method.
  • the ready lamp 138 and the shot lamp 142 may also be controller image information by the controller detecting unit 150.
  • the controller image information including images of the ready lamp 138 and the shot lamp 142 is transmitted to the synchronization unit 160, and the synchronization unit 160 outputs a ready signal or a shot signal using the controller image information. It can be determined whether there is a signal and the type of the signal.
  • the controller detector 150 is provided in front of the controller 130.
  • the controller detecting unit 150 is connected to the controller 130 by the support device 152, and has a structure that can adjust the direction thereof.
  • the sensing unit 150 may correspond to a camera capable of photographing various displays 132, 134, and 136 and various lamps 138 and 142 provided in front of the controller 130.
  • the controller sensing unit 150 generates controller image information by capturing various displays 132, 134, and 136 and various lamps 138 and 142 provided in front of the controller 130, and then generates the controller image information. To transmit.
  • the controller detector 150 and the synchronizer 160 are connected by a cable L3.
  • the controller sensing unit 150 and the synchronization unit 160 may be connected by a wireless (wireless), such as cable (L3).
  • the controller detecting unit 150 may be provided with one or two or more, and may photograph the front or the other surface of the controller 130.
  • the support device 152 may have a structure that can be detachably attached to the controller 130.
  • the synchronizer 160 is connected to the controller detector 150 by a cable L3 and extracts the exposure dose information using the controller image information transmitted from the controller detector 150. That is, the synchronization unit 160 is connected to the controller detection unit 150 by wire or wirelessly to obtain controller image information acquired by the controller detection unit 150. In addition, the synchronization unit 160 receives and analyzes controller image information including the exposure amount display 134 included in the controller 130 at a real time from the controller detection unit 150 to determine the exposure amount of the output X-ray. Can be.
  • the synchronization unit 160 is connected to the reader unit 118 by a cable L2, and extracts time information using initial X-ray image information transmitted from the reader unit 118. A method of extracting such visual information will be described below with reference to FIGS. 5 to 7.
  • the synchronizing unit 160 uses the screen output device (for example, LCD display, etc.) or printed matter output device (for example, a printer, etc.) which is provided or connected to itself, to output the exposure amount information and the X-ray image information of the output X-ray.
  • the user may output time information corresponding to the captured time so that the user can recognize the time information.
  • FIG. 1 illustrates that the synchronization unit 160 is implemented as a personal computer, the synchronization unit 160 is not necessarily a computer.
  • the exposure information and visual information are analyzed by analyzing image information received from the controller detection unit 150 and the reader unit 118. Of course, anything is possible if you can extract it.
  • the exposure amount information and the visual information obtained by analyzing the image information of the synchronization unit 160 are synchronized with the image I of the subject and stored or transmitted together.
  • the synchronization device 100 of the X-ray system may be implemented by simply combining the controller detector 150 and the synchronizer 160 with the conventional CR-based X-ray system 110. have. Therefore, the synchronization apparatus 100 of the X-ray system according to the present exemplary embodiment may use the conventional CR-type X-ray system 110 without modification.
  • the synchronization apparatus 100 of the X-ray system may use the X-ray image information acquired by the conventional CR-type X-ray system 110 to determine an X-ray exposure amount (exposure amount information) and an image acquisition time (visual information). Problems that are difficult to record can be solved.
  • the synchronization unit 160 includes a communication module 162, a synchronization module 168, a computing module 174, and an output module 176.
  • the communication module 162 corresponds to communication means for receiving controller image information from the controller detecting unit 150 or for receiving initial X-ray image information (including visual information image) from the reader unit 118.
  • the communication module 162 may be implemented by wired communication using a cable or wireless communication using a wireless communication (eg, a Zigbee or a Bluetooth) module based on a cable.
  • the communication module 162 may transmit visual information and exposure dose information to a PACS (Picture Archiving and Communication System).
  • PACS Picture Archiving and Communication System
  • the computing module 174 analyzes the controller image information received by the controller detection unit 150 and the initial X-ray image information received from the reader unit 118.
  • the exposure information and the exposure information are analyzed by analyzing the image information. Extract visual information.
  • the exposure amount information corresponds to the exposure amount of X-rays used to obtain the image (I) of the subject, and the visual information is displayed at the time (hours, minutes and seconds) when the image (I) of the subject is obtained. Corresponding.
  • the synchronization module 168 synchronizes the exposure amount information and the visual information obtained by the computing module 174 with the image I of the obtained subject. Therefore, the synchronization module 168 may record the visual information and the exposure amount information in the image I of the subject and transmit it to the communication module 162.
  • the output module 176 is for outputting exposure amount information and time information analyzed and output by the computing module 174.
  • the output module 176 may correspond to a communication interface for outputting the information to another device (not shown), and may correspond to a display device such as an LCD or a printing device such as a printer for outputting a screen or a print. .
  • FIG. 5 is a perspective view illustrating a visual display device 180 applied to the x-ray system 110 illustrated in FIG. 1
  • FIG. 6 is a plan view illustrating the visual display device 180 illustrated in FIG. 5.
  • FIG. 7 is a diagram illustrating initial X-ray image information acquired by the X-ray system 110 and illustrates that the visual information image is included by the visual display device 180.
  • the visual display device 180 is positioned inside or outside the IP cassette c so that the visual information image is displayed at the bottom thereof when initial X-ray image information is obtained.
  • the visual information image of the visual display device 180 which is simultaneously generated when the X-ray image information is obtained, is extracted as visual information by the synchronization unit 160, and the visual information is captured along with the exposure information. Synchronized with the image I for, the X-ray image information.
  • the visual display device 180 includes a case 182, a shield 184, a first display 186, and a second display 198.
  • the case 182 may have various shapes such as a rectangle, have a thin thickness, and an empty space in which the first display unit 186 and the second display unit 198 may be formed. As shown in FIG. 1, X-rays may be irradiated while the visual display device 180 is attached to the outside of the IP cassette c, and X-rays may be irradiated while being positioned inside the IP cassette c.
  • the case 182 may be formed of a material through which X-rays can pass.
  • the shield 184 is a portion formed on one side of the case 182 and corresponds to a cover formed by lead (Pb) or the like through which X-rays do not penetrate. Inside the shield 184, a control device (not shown) or a power supply device (for example, a battery, etc.) for controlling the first display unit 186 and the second display unit 198 may be located.
  • the shield 184 serves to protect the control device or power supply device from X-rays.
  • the shield 184 is displayed in black as illustrated in FIG. 7 because X-rays do not transmit.
  • the first display unit 186 and the second display unit 198 display time, for example, the first display unit 186 displays an hour, and the second display unit 198 displays minutes. I can display it. In addition, the first display unit 186 may display minutes and the second display unit 198 may display seconds.
  • the first display unit 186 and the second display unit 198 may operate independently of each other and display hours and minutes or minutes or seconds.
  • the first display unit 186 and the second display unit 198 have the same structure and may include a rotating member 188, a point 192, a dial 194, and an identification member 196.
  • the rotating member 188 is a disk shape having a constant diameter and thickness, and is operated by a control device or a power supply device (not shown) located inside the shield 184 to rotate while corresponding to the time and minute seconds.
  • a control device or a power supply device located inside the shield 184 to rotate while corresponding to the time and minute seconds.
  • One side edge portion of the rotating member 188 is provided with a point 192.
  • the circumferential portion of the rotating member 188 is provided with a dial 194 at regular intervals.
  • the rotating member 188 is illustrated as having a disc shape, but it is a matter of course that the rotating member 188 may have a general needle shape.
  • the point 192 is formed of a material which does not transmit X-rays, and is displayed as one point in the initial X-ray image information (see FIG. 6). Accordingly, the point 192 is displayed as a point when the X-ray image information is obtained, thereby displaying one of the hour and minute seconds according to the position relative to the dial 194. Referring to FIG. 7, the points 192 positioned on the first display unit 186 and the second display unit 198 may indicate 10:37.
  • the dial 194 is disposed at regular intervals around the rotating member 188, and may represent time. Since the dial 194 is also made of a material that does not transmit X-rays, it is displayed in black with the point 192 in the initial X-ray image information, as illustrated in FIG. 7.
  • the identification member 196 facilitates the identification of the first display unit 186 and the second display unit 198 as symbols (letters or numbers) formed on the upper surface of the first display unit 186 and the second display unit 198.
  • the identification member 196 may also be formed of a material that does not transmit X-rays, and as a result, as shown in FIG. 7, the identification member 196 is represented by H representing the time and M representing the time in the initial X-ray image information.
  • the identification member may display the right side (indicated by R) or the left side (indicated by L) of the image.
  • the visual display device 180 has two display units 186 and 198, but may also have one or three or more display units.
  • the display units 186 and 198 may be rotated by various configurations.
  • the display units 186 and 198 may have a general quartz movement or a mechanical winding winding.
  • FIG. 5 to 6 illustrate that the display units 186 and 198 of the visual display device 180 rotate with the rotating member 188, the linear reciprocating motion as illustrated in FIG. 9 below or FIG. You can also make a rotational movement with a constant pattern as in.
  • Each visual display device 180 may have a unique identification number, which may be displayed together with the visual information image when initial X-ray image information is obtained.
  • the synchronizer 160 may store information on each visual display device 180 (for example, visual error information of the corresponding visual display device 180), and initial X-ray image information may be stored in the synchronizer 160. ), The error with respect to the time displayed on the time information image may be corrected with reference to the identification number.
  • the visual display device 180 may be manufactured separately from the IP cassette c, but may also be manufactured integrally with the IP cassette c.
  • the initial X-ray image information P is displayed together with the image I of the subject along with the visual information image T by the visual display device 180.
  • the visual information image T is displayed by the point 192, the dial 194, and the identification member 196 of the visual display device 180 to represent the time when X-ray imaging of the subject was performed.
  • the reader unit 118 obtains initial X-ray image information P from the IP cassette c and transmits it to the synchronization unit 160.
  • the synchronizing unit 160 extracts the initial X-ray image information P transmitted from the reader unit 118 through the image analysis, that is, the time when X-ray imaging was performed, that is, the visual information.
  • the visual information image T represents 10:37, and the synchronization unit 160 may grasp.
  • the synchronization unit 160 generates the X-ray image information by synchronizing the extracted visual information and the exposure amount information of the X-ray extracted by the controller detection unit 150 with the image I of the subject (see FIG. 8).
  • FIG. 8 is a diagram illustrating X-ray image information in which exposure amount information and visual information are synchronized with an image I of a subject.
  • the synchronization unit 160 synchronizes the extracted visual information and the exposure amount information with the image I of the subject, and the X-ray image in which the visual information and the exposure amount information is synchronized with the image I of the subject. Generate information. In this way, the X-ray image information of the time information ("shooting time: 10:37”) and the exposure information ("exposure amount: 0.1 mSv”) is synchronized is output module 176 of the synchronization unit 160 It may be displayed to the user or transmitted to a picture archiving and communication system (PACS).
  • PACS picture archiving and communication system
  • FIG. 9 is a plan view illustrating a visual display device 280 according to a second exemplary embodiment of the present invention.
  • the visual display device 280 includes a first display portion 286 and a second display portion 298 that perform linear movement or linear reciprocation movement.
  • the visual display device 280 includes a case 282 and a shield 284, which are the same as the case 182 and the shield 184 of the visual display device 180 according to the first embodiment. Detailed description will be omitted.
  • the first display portion 286 and the second display portion 298 linearly move the linear movement portion 290 by a screw thread (not shown) formed around the first display portion 286 and the second display portion 298.
  • a screw thread (not shown) formed around the first display portion 286 and the second display portion 298.
  • seconds, minutes, hours, etc. are displayed while linearly reciprocating.
  • the first display unit 286 may display a time
  • the second display unit 298 may display minutes.
  • a point 292 through which X-rays do not penetrate is formed at the distal end of the linear moving part 290, and a dial 294 is indicated below the point 292. Since the points 292 and the dial 294 are similar to the points 192 and the dial 194 of the visual display device 180 according to the first embodiment, detailed description thereof will be omitted.
  • One end of the transfer screw 288 is connected to a motor (not shown) and the other end is connected to the support 296.
  • Each of the transfer screw 288 can rotate in the clockwise and counterclockwise direction, and has a constant rotational speed to allow the linear moving portion 290 to move linearly.
  • FIG. 10 is a plan view illustrating a visual display device 380 according to a third exemplary embodiment of the present invention.
  • the visual display apparatus 380 includes a first display unit 386 and a second display unit 398 that perform a rotational motion.
  • a plurality of points 390 are formed in the first display unit 386 and the second display unit 398.
  • the points 390 are formed of lead or the like, and do not transmit X-rays, and thus form a plurality of points.
  • the pattern represented by the plurality of points 390 is changed.
  • visual information represented by the first display unit 386 and the second display unit 398 may be recognized by analyzing images of the points 390 that appear on the first display unit 386 and the second display unit 398. Will be.
  • the visual display device 380 according to the third embodiment includes a case 382 and a shield 384, which is a case 182 and a shield 184 of the visual display device 180 according to the first embodiment. ), So a detailed description thereof will be omitted.
  • the visual display apparatus 380 according to the present exemplary embodiment is characterized in that a plurality of points 390 are formed on the rotating screw 388 without having a separate dial.

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Abstract

Un dispositif d'affichage de l'heure et un dispositif de synchronisation d'un système à rayons X sont décrits. Le dispositif d'affichage de l'heure de système à rayons X selon un aspect de la présente invention est prévu dans une cassette IP utilisée dans un système à rayons X de plan de radiographie informatisée (CR) et comprend : une unité d'affichage pour afficher au moins une heure, une minute et une seconde; et un point qui est combiné avec un point de l'unité d'affichage et qui n'est pas pénétré par un rayon X.
PCT/KR2015/001838 2015-02-25 2015-02-25 Dispositif d'affichage de l'heure et dispositif de synchronisation d'un système à rayons x Ceased WO2016137032A1 (fr)

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PCT/KR2015/001838 WO2016137032A1 (fr) 2015-02-25 2015-02-25 Dispositif d'affichage de l'heure et dispositif de synchronisation d'un système à rayons x

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