WO2012070084A1 - Mobile x-ray imaging apparatus - Google Patents

Mobile x-ray imaging apparatus Download PDF

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Publication number
WO2012070084A1
WO2012070084A1 PCT/JP2010/006851 JP2010006851W WO2012070084A1 WO 2012070084 A1 WO2012070084 A1 WO 2012070084A1 JP 2010006851 W JP2010006851 W JP 2010006851W WO 2012070084 A1 WO2012070084 A1 WO 2012070084A1
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WO
WIPO (PCT)
Prior art keywords
wireless
access point
ray
wireless lan
mobile
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PCT/JP2010/006851
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French (fr)
Japanese (ja)
Inventor
忠彦 中原
上武　高啓
真己人 加藤
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株式会社島津製作所
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Priority to PCT/JP2010/006851 priority Critical patent/WO2012070084A1/en
Publication of WO2012070084A1 publication Critical patent/WO2012070084A1/en

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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
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4405—Constructional features of apparatus for radiation diagnosis the apparatus being movable or portable, e.g. handheld or mounted on a trolley
    • 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
    • A61B6/56—Details of data transmission or power supply, e.g. use of slip rings
    • A61B6/563—Details of data transmission or power supply, e.g. use of slip rings involving image data transmission via a network
    • 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
    • A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4208—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
    • A61B6/4233—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector using matrix detectors

Definitions

  • the present invention relates to a mobile X-ray imaging apparatus equipped with a flat panel X-ray detector and used for round trips, and more particularly to switch the connection form of a flat panel X-ray detector between a wireless LAN and a wired LAN. Regarding technology.
  • this type of mobile X-ray imaging apparatus includes a flat panel X-ray detector (hereinafter referred to as FPD) (see, for example, Patent Documents 1 to 3).
  • FPD Flat Panel X-ray detector
  • Patent Documents 1 to 3 FPD (Flat Panel) Detector)
  • FPD Full Panel Detector
  • imaging can be performed while moving in each hospital room in a hospital, the use of a mobile X-ray imaging apparatus that can be easily moved is rapidly spreading.
  • FIG. 7 is a block diagram showing a schematic configuration of a mobile X-ray imaging apparatus according to a conventional example.
  • the mobile X-ray imaging apparatus includes an X-ray generation apparatus 101, an FPD 103, a PC 105, a wireless LAN access point 107, a wired LAN connection interface 109, and a power source 111.
  • the X-ray generator 101 includes an X-ray tube that generates X-rays, and emits X-rays to a subject.
  • the FPD 103 has a function of detecting transmitted X-rays that have passed through the subject, and can switch between communication using a wireless LAN and communication using a wired LAN.
  • the PC 105 is composed of a computer that controls each part in an integrated manner.
  • the wireless LAN access point 107 has a function of performing communication by wireless LAN, and relays transmission X-ray data and the like between the PC 105 and the FPD 103.
  • the wired LAN connection interface 109 is an interface for performing communication between the PC 105 and the FPD 103 via a wired LAN.
  • the power source 111 is a battery that supplies power to each part of the mobile X-ray imaging apparatus.
  • wireless communication is performed between the FPD 103 and the wireless LAN access point 107, and the transmission X-ray data collected by the FPD 103 is captured by the PC 105, and image processing or the like is performed to perform transmission X-ray image.
  • the processing such as displaying is performed.
  • wireless LAN communication using a frequency of 2.4 GHz according to the IEEE 802.11n standard is used. Since this standard enables high-speed communication at an effective speed of 100 Mbps or more, even if the transmission X-ray data collected in the FPD 103 has a large capacity, it can be loaded into the PC 105 in a short time.
  • the FPD 103 can be switched from the wireless LAN to the wired LAN, and the radio interference can be eliminated by manually turning off the power source provided in the main body of the wireless LAN access point 107.
  • the present invention has been made in view of such circumstances, and when switching to wired LAN connection, it is possible to reliably avoid wireless interference by stopping the wireless function of the wireless LAN access point. It is an object of the present invention to provide a movable X-ray imaging apparatus that can be used.
  • the present invention has the following configuration. That is, the mobile X-ray imaging apparatus of the present invention is configured to be movable, and in the mobile X-ray imaging apparatus that performs X-ray imaging, X-ray irradiation means for irradiating X-rays and X-rays can be detected.
  • a flat panel X-ray detector that transmits transmission X-ray data detected by either wireless LAN or wired LAN communication, and wireless LAN access for wireless communication with the flat panel X-ray detector
  • a wired LAN interface that is connected to the flat panel X-ray detector by a cable and performs wired communication with the flat panel X-ray detector, and either the wireless LAN access point or the wired LAN interface
  • the flat panel X-ray detector and the wired LAN interface are connected by a cable in a state in which wireless communication by the wireless LAN access point is possible and a power source that supplies power to the access point and the wired LAN interface Includes an interference prevention means for stopping the function of the wireless LAN access point.
  • the interference preventing means is linked to the changeover switch operated by a photographer after the flat panel X-ray detector and the wired LAN interface are connected by a cable, and linked to the changeover switch. And a power supply switching means for switching a power supply destination from the power source from the wireless LAN access point to the wired LAN interface.
  • the power supply switching means switches the power supply destination from the power source from the wireless LAN access point to the wired LAN interface in conjunction with this operation. Therefore, the function of the wireless LAN access point is stopped, so that wireless interference can be avoided reliably. In addition, since no power is supplied to the wireless LAN access point, the usable time of the apparatus by the power source can be extended.
  • the wired LAN interface is always supplied with electric power from the power source
  • the interference preventing means includes the flat panel X-ray detector and the wired LAN interface connected by a cable. It is preferable to include a connection detection unit that detects the connection and a function stop unit that stops only the wireless function of the wireless LAN access point when the connection detection unit detects a connection.
  • the connection detecting means can detect that the wired LAN interface and the flat panel X-ray detector are connected. With this as a trigger, the function stop means automatically stops the wireless function of the wireless LAN access point, so that wireless interference can be reliably avoided. In addition, since the wireless function of the wireless LAN access point is only stopped and the power supply is not shut down, when performing wireless communication again through the wireless LAN access point, it can be quickly restarted.
  • the wired LAN interface is always supplied with electric power from the power source
  • the interference preventing means includes the flat panel X-ray detector and the wired LAN interface connected by a cable. It is preferable to include a connection detection unit for detecting the power and a power cutoff unit for cutting off the power of the wireless LAN access point when the connection detection unit detects a connection.
  • the connection detecting means can detect that the wired LAN interface and the flat panel X-ray detector are connected. With this as a trigger, the power shut-off means automatically shuts off the power of the wireless LAN access point, so that radio interference can be avoided reliably. In addition, since no power is supplied to the wireless LAN access point, the usable time of the apparatus by the power source can be extended.
  • the mobile X-ray imaging apparatus of the present invention if wireless communication by a wireless LAN access point is possible, transmitted X-ray data is transmitted from the flat panel X-ray detector, and the wireless LAN access point is Then, transmission X-ray data is collected by the collecting means.
  • the interference prevention means stops the function of the wireless LAN access point. Therefore, since wireless transmission from the wireless LAN access point is stopped, wireless interference can be avoided reliably.
  • FIG. 1 is a schematic configuration diagram illustrating a mobile X-ray imaging apparatus according to a first embodiment. It is a block diagram which shows the state at the time of radio
  • FIG. 1 is a schematic configuration diagram of a mobile X-ray imaging apparatus according to the first embodiment
  • FIG. 2 is a block diagram illustrating a state during wireless communication in the first embodiment
  • FIG. It is a block diagram which shows the state at the time of communication.
  • the mobile X-ray imaging apparatus 1 includes a base unit 3, an X-ray irradiation unit 5, and a control unit 7.
  • the base unit 3 includes a carriage 9, a rear wheel 11, an electric motor 13 for traveling, and a front wheel 15.
  • the carriage 9 is mounted with the X-ray irradiation unit 5 on the upper front side (left side in FIG. 1) and is mounted on the control unit 7 on the rear side (right side in FIG. 1).
  • the rear wheel 11 is disposed at the rear part of the base part 3, and a traveling electric motor 13 is built in the rear side of the rear wheel 11 in FIG. 1.
  • the traveling electric motor 13 rotates the rear wheel 11 by an operation of the photographer.
  • the front wheel 15 is a caster-type free wheel, and is attached to the lower front side of the carriage 9.
  • the X-ray irradiation unit 5 includes a vertical support column 17, a horizontal support column 19, and an X-ray tube 21.
  • the vertical support column 17 is attached to the front side of the upper surface of the carriage 9 in a standing posture.
  • the horizontal column 19 is attached to one end side in a horizontal posture with respect to the vertical column 17.
  • pillar 19 is attached with respect to the vertical support
  • the X-ray tube 21 is attached to the other end side of the horizontal column 19.
  • the vertical support column 17 is rotatable around the vertical axis.
  • the horizontal support column 19 is moved together with the X-ray tube 21 as shown by a two-dot chain line in FIG. 9 is swung upward. Further, at the time of shooting, as shown by a solid line in FIG.
  • the control unit 7 includes a power source 23, a PC 25, a display panel 27, an operation panel 29, a high voltage generator 31, a wireless LAN access point 33, a wired LAN interface 35, a cart operation handle 37, and a storage box. 39 and a flat panel X-ray detector 41 (hereinafter referred to as FPD 41).
  • FPD 41 flat panel X-ray detector 41
  • the power source 23 supplies power to the PC 25, the traveling electric motor 13, the wireless LAN access point 33, the wired LAN interface 35, and the like.
  • the PC 25 is configured by a computer and comprehensively controls the traveling electric motor 13, the high voltage generator 31, the wireless LAN access point 33, the wired LAN interface 35, and the like.
  • the PC 25 also includes a hard disk for collecting captured images, a program for image processing, and the like.
  • the display panel 27 is composed of, for example, a liquid crystal display device, and displays shooting condition setting information, a shot image, and the like.
  • the operation panel 29 is an input device configured with, for example, a keyboard and a touch panel, and is operated by the photographer DR to give an instruction to the PC 25.
  • the high voltage generator 31 supplies power to the X-ray tube 21 according to the imaging conditions (tube voltage, tube current, etc.) instructed by the operation panel 29.
  • the FPD 41 includes a number of X-ray detection elements in a two-dimensional matrix.
  • the FPD 41 has a function of transmitting the detected transmission X-ray data using either a wireless LAN or a wired LAN.
  • the FPD 41 includes a wired LAN connector 43 for wired LAN communication, and is configured to be connectable to the wired LAN interface 35 with a cable 45.
  • the storage box 39 is used for storing the FPD 41 while the carriage 9 is moving. At the time of imaging, the FPD 41 is placed on the bed B and under the subject P, for example.
  • the wireless LAN access point 33 communicates with the FPD 41 by wireless communication and receives the transmitted X-ray data detected by the FPD 41.
  • the received transmission X-ray data is sent to the PC 25.
  • the wireless LAN access point 33 can be turned on / off by the PC 25 with a built-in power supply, and can be turned on / off by the PC 25 only for the wireless function.
  • the wireless LAN access point 33 performs wireless communication using a 2.4 GHz frequency band according to the IEEE 802.11n standard.
  • the communication can be performed at a high speed (for example, 100 Mbps or more) by channel bonding for connecting a plurality of channels.
  • the wired LAN interface 35 communicates with the FPD 41 by wired communication and receives transmission X-ray data detected by the FPD 41.
  • the power supply changeover switch 47 includes a changeover switch 49 and a relay 51.
  • the relay 51 has a c terminal connected to the power supply 23, an a terminal connected to the power supply of the wired LAN interface 35, and a b terminal connected to the power supply of the wireless LAN access point 33.
  • the changeover switch 49 is not activated, the c terminal and the b terminal are connected.
  • the relay 51 is operated in conjunction with the operation, and the c terminal of the power source 25 is connected. a terminal is connected.
  • the power supply changeover switch 47 is attached to a location that can be easily operated by the photographer DR.
  • the X-ray tube 21 described above corresponds to the “X-ray irradiation means” in the present invention
  • the PC 25 corresponds to the “collection means” in the present invention
  • the power supply changeover switch 47 corresponds to the “interference prevention means” in the present invention. Equivalent to.
  • the relay 51 corresponds to “power supply switching means” in the present invention.
  • the radiographer DR moves the mobile X-ray imaging apparatus 1 to the location of the subject P, sets the FPD 41, and moves the X-ray tube 21 to a position facing the FPD 41. Then, with the changeover switch 49 being inactive, the shooting conditions are set from the operation panel 29 and the start of shooting is instructed. Then, the transmitted X-ray data detected by the FPD 41 is collected by the PC 25 via the wireless LAN access point 33 by wireless communication. The photographer operates the operation panel 29 to confirm an image based on the transmitted X-ray data.
  • Wired communication ( Figure 3)
  • the photographer DR connects one end side of the cable 45 to the connector 43 of the FPD 41 and connects the other end side of the cable 45 to the wired LAN interface 35. Further, the changeover switch 49 is operated. Thereby, since the wireless LAN access point 33 is disconnected from the power supply 23, all the functions of the wireless LAN access point 33 are stopped. Therefore, since wireless transmission from the wireless LAN access point 33 is stopped, wireless interference can be avoided reliably. As a result, there is no adverse effect on surrounding wireless LAN devices.
  • the power supply to the wireless LAN access point 33 is completely cut off, it is possible to suppress the power reduction of the power source 23. Therefore, the usable time of the mobile X-ray imaging apparatus 1 can be extended.
  • FIG. 4 is a block diagram illustrating a state during wireless communication according to the second embodiment
  • FIG. 5 is a block diagram illustrating a state during wired communication according to the second embodiment.
  • symbol is attached
  • the mobile X-ray imaging apparatus 1A does not include the power supply changeover switch 47.
  • Each power line of the wireless LAN access point 33 and the wired LAN interface 35 is always connected to the power source 23.
  • the PC 25 has a function of determining that the FPD 41 and the wired LAN interface 35 are connected by the cable 45 by monitoring the signal of the wired LAN interface 35.
  • the PC 25 determines that the FPD 41 is used for wired communication, the PC 25 blocks only the wireless function of the wireless LAN access point 33.
  • the PC 25 described above corresponds to “connection detection means” and “function stop means” in the present invention.
  • the photographer DR collects transmission X-ray data via the wireless LAN access point 33 and confirms the photographed image.
  • Wired communication ( Figure 5)
  • the photographer DR connects one end side of the cable 45 to the connector 43 of the FPD 41 and connects the other end side of the cable 45 to the wired LAN interface 35.
  • the PC 25 detects that the cable 45 is connected and stops only the wireless function of the wireless LAN access point 33. Therefore, since wireless transmission from the wireless LAN access point 33 is stopped, wireless interference can be avoided reliably. As a result, there is no adverse effect on surrounding wireless LAN devices.
  • the PC 25 automatically stops the wireless function of the wireless LAN access point 33, the photographer DR does not need to perform an operation or the like, and it is possible to reliably avoid wireless interference. Furthermore, since the wireless function of the wireless LAN access point 33 is only stopped and the power supply is not shut down, when performing wireless communication again through the wireless LAN access point 33, it can be quickly restarted.
  • FIG. 6 is a block diagram illustrating a state during wired communication according to the third embodiment.
  • symbol is attached
  • the mobile X-ray imaging apparatus 1B does not include the power supply changeover switch 49 as in the second embodiment.
  • Each power line of the wireless LAN access point 33 and the wired LAN interface 35 is always connected to the power source 23 as in the second embodiment.
  • the PC 25 has a function capable of determining that the cable 45 is connected to the wired LAN interface 35 as in the second embodiment.
  • the PC 25 determines that the FPD 41 is used for wired communication, the PC 25 shuts off the power of the wireless LAN access point 33.
  • the PC 25 described above corresponds to the “connection detection means” and “power cutoff means” in the present invention.
  • Wireless communication is the same as in FIG. 4 of the second embodiment described above. That is, the photographer DR collects transmission X-ray data via the wireless LAN access point 33 and confirms the photographed image.
  • Wired communication ( Figure 6)
  • the photographer DR connects the FPD 41 and the wired LAN interface 35 with the cable 45.
  • the PC 25 detects that the cable 45 is connected and shuts off the power supply of the wireless LAN access point 33. Therefore, since wireless transmission from the wireless LAN access point 33 is stopped, wireless interference can be avoided reliably. As a result, there is no adverse effect on surrounding wireless LAN devices.
  • the PC 25 automatically shuts off the power supply of the wireless LAN access point 33, there is an effect that the radiographer DR can avoid the radio interference without any operation or the like. Furthermore, since power is not supplied to the wireless LAN access point 33, the usable time of the apparatus by the power source can be extended.
  • the present invention is not limited to the above embodiment, and can be modified as follows.
  • the wireless LAN access point 33 performs wireless communication according to the IEEE 802.3n standard, but the present invention can be applied to other wireless communication standards. .
  • the photographer DR switches the changeover switch 49 after the cable 45 is connected.
  • a detection unit such as a limit switch is attached to the wired LAN interface 35 side, and the cable 45 is attached.
  • the detection means detects that, the PC 25 that has received the detection signal of the detection means may stop the wireless function of the wireless LAN access point 33 or shut off the power supply.
  • the configuration as shown in FIG. 1 has been described as an example.
  • the present invention is not limited to such a configuration, and performs wireless communication or wired communication.
  • the present invention can be applied to any mobile X-ray imaging apparatus including the FPD 41.
  • the wired LAN interface 35 is provided on the front side of the control unit 7, but may be provided on the front portion of the carriage 9. Thereby, connection with FPD41 can be performed more simply.
  • the present invention is suitable for a mobile X-ray imaging apparatus including a flat panel X-ray detector that performs wireless communication or wired communication.

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Abstract

If a situation arises in which transmission X-ray data collection by wireless communication is not possible due to wireless interference, the radiographer connects one end of a cable to the FPD connector and the other end of the cable to a cable LAN interface, and also operates a selector switch. Since the wireless LAN access point is thereby disconnected from the power source, all functions are discontinued. Since wireless transmission from the wireless LAN access point is therefore discontinued, wireless interference can be reliably avoided. As a result, surrounding wireless LAN devices are not adversely affected.

Description

移動型Ｘ線撮影装置Mobile X-ray equipment
　この発明は、フラットパネル型Ｘ線検出器を搭載し、回診等に使用する移動型Ｘ線撮影装置に係り、特に、フラットパネル型Ｘ線検出器の接続形態を無線ＬＡＮと有線ＬＡＮとで切り替える技術に関する。 The present invention relates to a mobile X-ray imaging apparatus equipped with a flat panel X-ray detector and used for round trips, and more particularly to switch the connection form of a flat panel X-ray detector between a wireless LAN and a wired LAN. Regarding technology.
　従来のこの種の移動型Ｘ線撮影装置として、フラットパネル型Ｘ線検出器（以下、ＦＰＤと称する）を備えたものがある（例えば、特許文献１～３参照）。ＦＰＤ（Flat Panel Detector）は、撮影画像の空間分解能及びＸ線感度を高めることができる等の理由により、急速に普及している。また、病院内で各病室を移動しながら撮影を行うことができるので、小型のＸ線撮影装置であって容易に移動させることができる移動型の利用も急速に広まっている。 Conventionally, this type of mobile X-ray imaging apparatus includes a flat panel X-ray detector (hereinafter referred to as FPD) (see, for example, Patent Documents 1 to 3). FPD (Flat Panel） Detector) is rapidly spreading because it can increase the spatial resolution and X-ray sensitivity of captured images. Moreover, since imaging can be performed while moving in each hospital room in a hospital, the use of a mobile X-ray imaging apparatus that can be easily moved is rapidly spreading.
　このＦＰＤを備えた移動型Ｘ線撮影装置のうち、ＦＰＤを無線ＬＡＮと有線ＬＡＮのいずれかにより接続することができる装置（例えば、非特許文献１参照）について、図７を参照して説明する。なお、図７は、従来例に係る移動型Ｘ線撮影装置の概略構成を示したブロック図である。 Of the mobile X-ray imaging apparatus provided with the FPD, an apparatus capable of connecting the FPD by either a wireless LAN or a wired LAN (for example, see Non-Patent Document 1) will be described with reference to FIG. . FIG. 7 is a block diagram showing a schematic configuration of a mobile X-ray imaging apparatus according to a conventional example.
　この移動型Ｘ線撮影装置は、Ｘ線発生装置１０１と、ＦＰＤ１０３と、ＰＣ１０５と、無線ＬＡＮアクセスポイント１０７と、有線ＬＡＮ接続インターフェイス１０９と、電源１１１とを備えている。Ｘ線発生装置１０１は、Ｘ線を発生させるＸ線管を備え、被検体に対してＸ線を放射する。ＦＰＤ１０３は、被検体を透過した透過Ｘ線を検出する機能を備え、無線ＬＡＮによる通信と有線ＬＡＮによる通信とを切り替えることができる。ＰＣ１０５は、各部を統括的に制御するコンピュータで構成されている。無線ＬＡＮアクセスポイント１０７は、無線ＬＡＮによる通信を行う機能を備え、ＰＣ１０５とＦＰＤ１０３との間で透過Ｘ線データ等の中継を行う。有線ＬＡＮ接続インターフェイス１０９は、ＰＣ１０５とＦＰＤ１０３との間の通信を有線ＬＡＮで行うためのインターフェイスである。電源１１１は、移動型Ｘ線撮影装置の各部に電力を供給するバッテリーである。 The mobile X-ray imaging apparatus includes an X-ray generation apparatus 101, an FPD 103, a PC 105, a wireless LAN access point 107, a wired LAN connection interface 109, and a power source 111. The X-ray generator 101 includes an X-ray tube that generates X-rays, and emits X-rays to a subject. The FPD 103 has a function of detecting transmitted X-rays that have passed through the subject, and can switch between communication using a wireless LAN and communication using a wired LAN. The PC 105 is composed of a computer that controls each part in an integrated manner. The wireless LAN access point 107 has a function of performing communication by wireless LAN, and relays transmission X-ray data and the like between the PC 105 and the FPD 103. The wired LAN connection interface 109 is an interface for performing communication between the PC 105 and the FPD 103 via a wired LAN. The power source 111 is a battery that supplies power to each part of the mobile X-ray imaging apparatus.
　このように構成された装置では、ＦＰＤ１０３と無線ＬＡＮアクセスポイント１０７との間で無線通信を行って、ＦＰＤ１０３に収集された透過Ｘ線データをＰＣ１０５が取り込み、画像処理等を行って透過Ｘ線画像を表示する等の処理を行う。無線ＬＡＮアクセスポイント１０７とＦＰＤ１０３との間は、例えば、ＩＥＥＥ８０２．１１ｎ規格による２．４ＧＨｚの周波数を用いた無線ＬＡＮ通信が用いられている。この規格は、実効速度で１００Ｍｂｐｓ以上という高速通信が可能であるので、ＦＰＤ１０３に収集された透過Ｘ線データが大容量であっても短時間でＰＣ１０５に取り込むことができる。
特開２０１０－１５８４５４号公報 特開２００３－３３４１８５号公報 特開２００６－９５２１２号公報 キヤノン株式会社Digital Radiography System CXDI-70C Wirelessの概要を記載した頁（http//:cweb.canon.jp/medical/X-ray/lineup/cxdi70c/index.html/） In the apparatus configured as described above, wireless communication is performed between the FPD 103 and the wireless LAN access point 107, and the transmission X-ray data collected by the FPD 103 is captured by the PC 105, and image processing or the like is performed to perform transmission X-ray image. The processing such as displaying is performed. Between the wireless LAN access point 107 and the FPD 103, for example, wireless LAN communication using a frequency of 2.4 GHz according to the IEEE 802.11n standard is used. Since this standard enables high-speed communication at an effective speed of 100 Mbps or more, even if the transmission X-ray data collected in the FPD 103 has a large capacity, it can be loaded into the PC 105 in a short time.
JP 2010-158454 A JP 2003-334185 A JP 2006-95212 A Canon Inc. Digital Radiography System CXDI-70C Wireless page (http //: cweb.canon.jp/medical/X-ray/lineup/cxdi70c/index.html/)
　上述したような従来装置によると、高速通信が可能である一方、通信に用いられるバンド幅（チャンネル）を複数結合して通信を行うチャンネルボンディングを用いているので、病院内で既に用いられている他の移動型Ｘ線撮影装置や、病院内の既設の無線ＬＡＮと無線の干渉が生じる恐れがある。このような無線干渉が生じると、移動型Ｘ線撮影装置のＦＰＤ１０３と無線ＬＡＮアクセスポイント１０７との間の通信が不可能となる。特に、チャンネルボンディングを用いている場合には、３つ以上の無線ＬＡＮ機器を同時に使用することができなくなるので、通信可能な範囲に３つ以上の無線ＬＡＮ機器が存在すると、通信ができなくなる事態が生じ易い。そこで、そのような事態が生じた場合には、撮影者がＦＰＤ１０３を有線ＬＡＮインターフェイス１０９に接続することで、無線干渉の影響を回避して撮影を再開することが可能になっている。 According to the conventional apparatus as described above, high-speed communication is possible. On the other hand, since channel bonding that performs communication by combining a plurality of bandwidths (channels) used for communication is used, it is already used in hospitals. There is a risk of wireless interference with other mobile X-ray imaging apparatuses or existing wireless LANs in hospitals. When such wireless interference occurs, communication between the FPD 103 of the mobile X-ray imaging apparatus and the wireless LAN access point 107 becomes impossible. In particular, when channel bonding is used, it is impossible to use three or more wireless LAN devices at the same time. Therefore, if there are three or more wireless LAN devices in a communicable range, communication cannot be performed. Is likely to occur. Therefore, when such a situation occurs, the photographer can connect the FPD 103 to the wired LAN interface 109 to avoid the influence of wireless interference and resume photographing.
　しかしながら、ＦＰＤ１０３を有線ＬＡＮ接続に切り替えても、無線ＬＡＮアクセスポイント１０７からは無線信号の送信が継続されたままである。そのため、当該移動型Ｘ線撮影装置における有線ＬＡＮを用いたＦＰＤ１０３による撮影が可能となっても、無線干渉は解消されていないので、通信可能域内に存在する他の無線ＬＡＮ装置では無線による通信が使用できない状態が継続する恐れがある。なお、ＦＰＤ１０３を無線ＬＡＮから有線ＬＡＮに切り替えるとともに、無線ＬＡＮアクセスポイント１０７本体に備えられた電源を撮影者が手動でオフにすることにより、無線干渉を解消することはできる。しかし、撮影者が撮影に集中している場合には、切り替えを忘れる恐れがあり、無線干渉を確実には解消することができないという問題がある。その上、無線は目に見えないので、周囲の無線ＬＡＮ装置に悪影響を与えているか否かがわかりにくいことも、無線干渉による問題の解決を妨げている。 However, even if the FPD 103 is switched to the wired LAN connection, the wireless signal transmission from the wireless LAN access point 107 continues. For this reason, even when imaging by the FPD 103 using the wired LAN in the mobile X-ray imaging apparatus is possible, wireless interference has not been eliminated. Therefore, other wireless LAN apparatuses existing in the communicable area can perform wireless communication. There is a risk that it will continue to be unusable. Note that the FPD 103 can be switched from the wireless LAN to the wired LAN, and the radio interference can be eliminated by manually turning off the power source provided in the main body of the wireless LAN access point 107. However, when the photographer concentrates on shooting, there is a risk that switching may be forgotten, and there is a problem that radio interference cannot be resolved reliably. In addition, since the radio is invisible, it is difficult to know whether or not it has an adverse effect on the surrounding wireless LAN devices, which also prevents the solution of the problem due to radio interference.
　この発明は、このような事情に鑑みてなされたものであって、有線ＬＡＮ接続に切り替えた場合には、無線ＬＡＮアクセスポイントの無線機能を停止させることにより、無線干渉を確実に回避することができる移動型Ｘ線撮影装置を提供することを目的とする。 The present invention has been made in view of such circumstances, and when switching to wired LAN connection, it is possible to reliably avoid wireless interference by stopping the wireless function of the wireless LAN access point. It is an object of the present invention to provide a movable X-ray imaging apparatus that can be used.
　この発明は、このような目的を達成するために、次のような構成をとる。
　すなわち、この発明の移動型Ｘ線撮影装置は、移動可能に構成され、Ｘ線撮影を行う移動型Ｘ線撮影装置において、Ｘ線を照射するＸ線照射手段と、Ｘ線を検出可能であって、無線ＬＡＮまたは有線ＬＡＮのいずれか一方の通信により検出した透過Ｘ線データを送信するフラットパネル型Ｘ線検出器と、前記フラットパネル型Ｘ線検出器と無線通信を行うための無線ＬＡＮアクセスポイントと、前記フラットパネル型Ｘ線検出器とケーブルにより接続され、前記フラットパネル型Ｘ線検出器と有線通信を行うための有線ＬＡＮインターフェイスと、前記無線ＬＡＮアクセスポイントまたは前記有線ＬＡＮインターフェイスのいずれか一方を介して、前記フラットパネル型Ｘ線検出器から透過Ｘ線データを収集する収集手段と、前記無線ＬＡＮアクセスポイント及び前記有線ＬＡＮインターフェイスに電力を供給する電源と、前記無線ＬＡＮアクセスポイントによる無線通信が可能な状態で、前記フラットパネル型Ｘ線検出器と前記有線ＬＡＮインターフェイスとがケーブルで接続された場合には、前記無線ＬＡＮアクセスポイントの機能を停止させる干渉防止手段と、を備えていることを特徴とするものである。 In order to achieve such an object, the present invention has the following configuration.
That is, the mobile X-ray imaging apparatus of the present invention is configured to be movable, and in the mobile X-ray imaging apparatus that performs X-ray imaging, X-ray irradiation means for irradiating X-rays and X-rays can be detected. A flat panel X-ray detector that transmits transmission X-ray data detected by either wireless LAN or wired LAN communication, and wireless LAN access for wireless communication with the flat panel X-ray detector A wired LAN interface that is connected to the flat panel X-ray detector by a cable and performs wired communication with the flat panel X-ray detector, and either the wireless LAN access point or the wired LAN interface A collecting means for collecting transmitted X-ray data from the flat panel X-ray detector via the one; and the wireless LAN When the flat panel X-ray detector and the wired LAN interface are connected by a cable in a state in which wireless communication by the wireless LAN access point is possible and a power source that supplies power to the access point and the wired LAN interface Includes an interference prevention means for stopping the function of the wireless LAN access point.
　［作用・効果］この発明によれば、Ｘ線照射手段からＸ線が照射されると、透過Ｘ線がフラットパネル型Ｘ線検出器で検出される。そして、無線ＬＡＮアクセスポイントによる無線通信が可能な状態であれば、フラットパネル型Ｘ線検出器から透過Ｘ線データが送信され、無線ＬＡＮアクセスポイントを介して収集手段により透過Ｘ線データが収集される。このような状態において、フラットパネル型Ｘ線検出器と有線ＬＡＮインターフェイスとがケーブルで接続された場合には、干渉防止手段が無線ＬＡＮアクセスポイントの機能を停止させる。したがって、無線ＬＡＮアクセスポイントからの無線送信が停止されるので、無線干渉を確実に回避することができる。 [Action / Effect] According to the present invention, when X-rays are irradiated from the X-ray irradiation means, transmitted X-rays are detected by the flat panel X-ray detector. If wireless communication by the wireless LAN access point is possible, transmitted X-ray data is transmitted from the flat panel X-ray detector, and transmitted X-ray data is collected by the collecting means via the wireless LAN access point. The In such a state, when the flat panel X-ray detector and the wired LAN interface are connected by a cable, the interference prevention means stops the function of the wireless LAN access point. Therefore, since wireless transmission from the wireless LAN access point is stopped, wireless interference can be avoided reliably.
　また、この発明において、前記干渉防止手段は、前記フラットパネル型Ｘ線検出器と前記有線ＬＡＮインターフェイスとがケーブルで接続された後、撮影者によって操作される切り替えスイッチと、前記切り替えスイッチに連動して、前記無線ＬＡＮアクセスポイントから前記有線ＬＡＮインターフェイスへ前記電源からの電力供給先を切り替える電力供給切り替え手段と、を備えていることが好ましい。 Further, in the present invention, the interference preventing means is linked to the changeover switch operated by a photographer after the flat panel X-ray detector and the wired LAN interface are connected by a cable, and linked to the changeover switch. And a power supply switching means for switching a power supply destination from the power source from the wireless LAN access point to the wired LAN interface.
　切り替えスイッチが操作されると、これに連動して電力供給切り替え手段が電源からの電力供給先を無線ＬＡＮアクセスポイントから有線ＬＡＮインターフェイスへ切り替える。したがって、無線ＬＡＮアクセスポイントの機能が停止するので、確実に無線干渉を回避することができる。また、無線ＬＡＮアクセスポイントへの電力供給を行わないので、電源による装置の使用可能時間を延ばすことができる。 When the switch is operated, the power supply switching means switches the power supply destination from the power source from the wireless LAN access point to the wired LAN interface in conjunction with this operation. Therefore, the function of the wireless LAN access point is stopped, so that wireless interference can be avoided reliably. In addition, since no power is supplied to the wireless LAN access point, the usable time of the apparatus by the power source can be extended.
　また、この発明において、前記有線ＬＡＮインターフェイスは、前記電源から常時電力が供給されており、前記干渉防止手段は、前記フラットパネル型Ｘ線検出器と前記有線ＬＡＮインターフェイスとがケーブルで接続されたことを検出する接続検出手段と、前記接続検出手段が接続を検出した場合には、前記無線ＬＡＮアクセスポイントの無線機能のみを停止させる機能停止手段と、を備えていることが好ましい。 In the present invention, the wired LAN interface is always supplied with electric power from the power source, and the interference preventing means includes the flat panel X-ray detector and the wired LAN interface connected by a cable. It is preferable to include a connection detection unit that detects the connection and a function stop unit that stops only the wireless function of the wireless LAN access point when the connection detection unit detects a connection.
　有線ＬＡＮインターフェイスへ電源が常時供給されているので、有線ＬＡＮインターフェイスとフラットパネル型Ｘ線検出器とが接続されたことを接続検出手段により検出することができる。これをトリガにして機能停止手段が無線ＬＡＮアクセスポイントの無線機能を自動的に停止させるので、確実に無線干渉を回避することができる。また、無線ＬＡＮアクセスポイントの無線機能を停止するだけであって電源を遮断していないので、再び無線ＬＡＮアクセスポイントを介した無線通信を行う際には、迅速に再開することができる。 Since power is constantly supplied to the wired LAN interface, the connection detecting means can detect that the wired LAN interface and the flat panel X-ray detector are connected. With this as a trigger, the function stop means automatically stops the wireless function of the wireless LAN access point, so that wireless interference can be reliably avoided. In addition, since the wireless function of the wireless LAN access point is only stopped and the power supply is not shut down, when performing wireless communication again through the wireless LAN access point, it can be quickly restarted.
　また、この発明において、前記有線ＬＡＮインターフェイスは、前記電源から常時電力が供給されており、前記干渉防止手段は、前記フラットパネル型Ｘ線検出器と前記有線ＬＡＮインターフェイスとがケーブルで接続されたことを検出する接続検出手段と、前記接続検出手段が接続を検出した場合には、前記無線ＬＡＮアクセスポイントの電源を遮断する電源遮断手段と、を備えていることが好ましい。 In the present invention, the wired LAN interface is always supplied with electric power from the power source, and the interference preventing means includes the flat panel X-ray detector and the wired LAN interface connected by a cable. It is preferable to include a connection detection unit for detecting the power and a power cutoff unit for cutting off the power of the wireless LAN access point when the connection detection unit detects a connection.
　有線ＬＡＮインターフェイスへ電源が常時供給されているので、有線ＬＡＮインターフェイスとフラットパネル型Ｘ線検出器とが接続されたことを接続検出手段により検出することができる。これをトリガにして電源遮断手段が無線ＬＡＮアクセスポイントの電源を自動的に遮断するので、確実に無線干渉を回避することができる。また、無線ＬＡＮアクセスポイントへの電力供給を行わないので、電源による装置の使用可能時間を延ばすことができる。 Since power is constantly supplied to the wired LAN interface, the connection detecting means can detect that the wired LAN interface and the flat panel X-ray detector are connected. With this as a trigger, the power shut-off means automatically shuts off the power of the wireless LAN access point, so that radio interference can be avoided reliably. In addition, since no power is supplied to the wireless LAN access point, the usable time of the apparatus by the power source can be extended.
　この発明に係る移動型Ｘ線撮影装置によれば、無線ＬＡＮアクセスポイントによる無線通信が可能な状態であれば、フラットパネル型Ｘ線検出器から透過Ｘ線データが送信され、無線ＬＡＮアクセスポイントを介して収集手段により透過Ｘ線データが収集される。このような状態において、フラットパネル型Ｘ線検出器と有線ＬＡＮインターフェイスとがケーブルで接続された場合には、干渉防止手段が無線ＬＡＮアクセスポイントの機能を停止させる。したがって、無線ＬＡＮアクセスポイントからの無線送信が停止されるので、無線干渉を確実に回避することができる。 According to the mobile X-ray imaging apparatus of the present invention, if wireless communication by a wireless LAN access point is possible, transmitted X-ray data is transmitted from the flat panel X-ray detector, and the wireless LAN access point is Then, transmission X-ray data is collected by the collecting means. In such a state, when the flat panel X-ray detector and the wired LAN interface are connected by a cable, the interference prevention means stops the function of the wireless LAN access point. Therefore, since wireless transmission from the wireless LAN access point is stopped, wireless interference can be avoided reliably.
実施例１の移動型Ｘ線撮影装置を示す概略構成図である。1 is a schematic configuration diagram illustrating a mobile X-ray imaging apparatus according to a first embodiment. 実施例１における無線通信時の状態を示すブロック図である。It is a block diagram which shows the state at the time of radio | wireless communication in Example 1. FIG. 実施例１における有線通信時の状態を示すブロック図である。It is a block diagram which shows the state at the time of wired communication in Example 1. FIG. 実施例２における無線通信時の状態を示すブロック図である。It is a block diagram which shows the state at the time of radio | wireless communication in Example 2. FIG. 実施例２における有線通信時の状態を示すブロック図である。It is a block diagram which shows the state at the time of wired communication in Example 2. FIG. 実施例３における有線接続時の状態を示すブロック図である。It is a block diagram which shows the state at the time of wired connection in Example 3. FIG. 従来例に係る移動型Ｘ線撮影装置を示すブロック図である。It is a block diagram which shows the mobile X-ray imaging apparatus which concerns on a prior art example.
　１，１Ａ，１Ｂ　…　移動型Ｘ線撮影装置
　３　…　基台部
　５　…　Ｘ線照射ユニット
　７　…　制御ユニット
　２１　…　Ｘ線管
　２３　…　電源
　２５　…　ＰＣ
　３３　…　無線ＬＡＮアクセスポイント
　３５　…　有線ＬＡＮインターフェイス
　４１　…　ＦＰＤ
　４５　…　ケーブル
　４７　…　電力供給切り替えスイッチ
　４９　…　切り替えスイッチ
　５１　…　リレー DESCRIPTION OF SYMBOLS 1,1A, 1B ... Mobile X-ray imaging apparatus 3 ... Base part 5 ... X-ray irradiation unit 7 ... Control unit 21 ... X-ray tube 23 ... Power supply 25 ... PC
33 ... Wireless LAN access point 35 ... Wired LAN interface 41 ... FPD
45 ... Cable 47 ... Power supply changeover switch 49 ... Changeover switch 51 ... Relay
　以下、図面を参照してこの発明の実施例1を説明する。図１は、実施例１の移動型Ｘ線撮影装置の概略構成図であり、図２は、実施例１における無線通信時の状態を示すブロック図であり、図３は、実施例１における有線通信時の状態を示すブロック図である。 Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a mobile X-ray imaging apparatus according to the first embodiment, FIG. 2 is a block diagram illustrating a state during wireless communication in the first embodiment, and FIG. It is a block diagram which shows the state at the time of communication.
　この実施例に係る移動型Ｘ線撮影装置１は、基台部３と、Ｘ線照射ユニット５と、制御ユニット７とを備えている。 The mobile X-ray imaging apparatus 1 according to this embodiment includes a base unit 3, an X-ray irradiation unit 5, and a control unit 7.
　基台部３は、台車９と、後輪１１と、走行用電動モータ１３と、前輪１５とを備えている。台車９は、上部の前側（図１の左側）にＸ線照射ユニット５を搭載するとともに、上部の後側（図１の右側）に制御ユニット７に搭載している。後輪１１は、基台部３の後部に配置され、走行用電動モータ１３が図１における後輪１１の奥側に内蔵されている。走行用電動モータ１３は、撮影者の操作により後輪１１を回転駆動する。前輪１５は、キャスター式の自由輪であり、台車９の下部前側に取り付けられている。 The base unit 3 includes a carriage 9, a rear wheel 11, an electric motor 13 for traveling, and a front wheel 15. The carriage 9 is mounted with the X-ray irradiation unit 5 on the upper front side (left side in FIG. 1) and is mounted on the control unit 7 on the rear side (right side in FIG. 1). The rear wheel 11 is disposed at the rear part of the base part 3, and a traveling electric motor 13 is built in the rear side of the rear wheel 11 in FIG. 1. The traveling electric motor 13 rotates the rear wheel 11 by an operation of the photographer. The front wheel 15 is a caster-type free wheel, and is attached to the lower front side of the carriage 9.
　Ｘ線照射ユニット５は、垂直支柱１７と、水平支柱１９と、Ｘ線管２１とを備えている。垂直支柱１７は、台車９の上面前側に起立姿勢で取り付けられている。水平支柱１９は、垂直支柱１７に対して、水平姿勢で一端側が取り付けられている。また、水平支柱１９は、垂直支柱１７に対して昇降可能に取り付けられている。Ｘ線管２１は、水平支柱１９の他端側に取り付けられている。垂直支柱１７は、鉛直軸周りに回転可能であり、移動型Ｘ線撮影装置１を移動する際には、図１中に二点鎖線で示すように、Ｘ線管２１とともに水平支柱１９が台車９の上方に旋回移動される。また、撮影時は、図１中に実線で示すように、水平支柱１９が台車９の前方に旋回移動される。 The X-ray irradiation unit 5 includes a vertical support column 17, a horizontal support column 19, and an X-ray tube 21. The vertical support column 17 is attached to the front side of the upper surface of the carriage 9 in a standing posture. The horizontal column 19 is attached to one end side in a horizontal posture with respect to the vertical column 17. Moreover, the horizontal support | pillar 19 is attached with respect to the vertical support | pillar 17 so that raising / lowering is possible. The X-ray tube 21 is attached to the other end side of the horizontal column 19. The vertical support column 17 is rotatable around the vertical axis. When the mobile X-ray imaging apparatus 1 is moved, the horizontal support column 19 is moved together with the X-ray tube 21 as shown by a two-dot chain line in FIG. 9 is swung upward. Further, at the time of shooting, as shown by a solid line in FIG.
　制御ユニット７は、電源２３と、ＰＣ２５と、表示パネル２７と、操作パネル２９と、高電圧発生装置３１と、無線ＬＡＮアクセスポイント３３と、有線ＬＡＮインターフェイス３５と、台車運転ハンドル３７と、収納ボックス３９と、フラットパネル型Ｘ線検出器４１（以下、ＦＰＤ４１と称する）とを備えている。 The control unit 7 includes a power source 23, a PC 25, a display panel 27, an operation panel 29, a high voltage generator 31, a wireless LAN access point 33, a wired LAN interface 35, a cart operation handle 37, and a storage box. 39 and a flat panel X-ray detector 41 (hereinafter referred to as FPD 41).
　電源２３は、ＰＣ２５、走行用電動モータ１３、無線ＬＡＮアクセスポイント３３、有線ＬＡＮインターフェイス３５などに電力を供給する。ＰＣ２５は、コンピュータで構成され、走行用電動モータ１３、高電圧発生装置３１、無線ＬＡＮアクセスポイント３３、有線ＬＡＮインターフェイス３５などを統括的に制御する。また、ＰＣ２５は、撮影した画像を収集するためのハードディスクや、画像処理用のプログラムなども内蔵している。表示パネル２７は、例えば、液晶表示装置で構成され、撮影条件設定の情報や撮影画像の表示などを行う。操作パネル２９は、例えば、キーボードやタッチパネルで構成された入力装置であり、撮影者ＤＲによって操作され、ＰＣ２５に対する指示を行う。高電圧発生装置３１は、Ｘ線管２１に対して、操作パネル２９で指示された撮影条件（管電圧や管電流など）に応じて、Ｘ線管２１に電力を供給する。 The power source 23 supplies power to the PC 25, the traveling electric motor 13, the wireless LAN access point 33, the wired LAN interface 35, and the like. The PC 25 is configured by a computer and comprehensively controls the traveling electric motor 13, the high voltage generator 31, the wireless LAN access point 33, the wired LAN interface 35, and the like. The PC 25 also includes a hard disk for collecting captured images, a program for image processing, and the like. The display panel 27 is composed of, for example, a liquid crystal display device, and displays shooting condition setting information, a shot image, and the like. The operation panel 29 is an input device configured with, for example, a keyboard and a touch panel, and is operated by the photographer DR to give an instruction to the PC 25. The high voltage generator 31 supplies power to the X-ray tube 21 according to the imaging conditions (tube voltage, tube current, etc.) instructed by the operation panel 29.
　ＦＰＤ４１は、多数のＸ線検出素子を二次元マトリクス状に備えたものである。このＦＰＤ４１は、検出した透過Ｘ線データを無線ＬＡＮまたは有線ＬＡＮのいずれか一方で送信する機能を備えている。ＦＰＤ４１は、有線ＬＡＮ通信用の有線ＬＡＮコネクタ４３を備え、ケーブル４５で有線ＬＡＮインターフェイス３５に接続可能に構成されている。なお、収納ボックス３９は、台車９を移動中にＦＰＤ４１を収納しておくために利用される。撮影時には、ＦＰＤ４１は、例えば、ベッドＢ上であって、被検体Ｐの下に載置される。 The FPD 41 includes a number of X-ray detection elements in a two-dimensional matrix. The FPD 41 has a function of transmitting the detected transmission X-ray data using either a wireless LAN or a wired LAN. The FPD 41 includes a wired LAN connector 43 for wired LAN communication, and is configured to be connectable to the wired LAN interface 35 with a cable 45. The storage box 39 is used for storing the FPD 41 while the carriage 9 is moving. At the time of imaging, the FPD 41 is placed on the bed B and under the subject P, for example.
　無線ＬＡＮアクセスポイント３３は、無線通信によりＦＰＤ４１と通信を行って、ＦＰＤ４１が検出した透過Ｘ線データを受信する。受信した透過Ｘ線データは、ＰＣ２５へ送られる。また、無線ＬＡＮアクセスポイント３３は、内蔵した電源がＰＣ２５によってオン／オフ制御可能であり、また、無線機能だけをＰＣ２５によってオン／オフ制御可能である。無線ＬＡＮアクセスポイント３３は、例えば、ＩＥＥＥ８０２．１１ｎの規格による２．４ＧＨｚの周波数帯域を用いた無線通信を行う。通信は、複数のチャンネルを結合するチャンネルボンディングによる高速通信（例えば、１００Ｍｂｐｓ以上）が可能である。有線ＬＡＮインターフェイス３５は、有線通信によりＦＰＤ４１と通信を行って、ＦＰＤ４１が検出した透過Ｘ線データを受信する。 The wireless LAN access point 33 communicates with the FPD 41 by wireless communication and receives the transmitted X-ray data detected by the FPD 41. The received transmission X-ray data is sent to the PC 25. The wireless LAN access point 33 can be turned on / off by the PC 25 with a built-in power supply, and can be turned on / off by the PC 25 only for the wireless function. For example, the wireless LAN access point 33 performs wireless communication using a 2.4 GHz frequency band according to the IEEE 802.11n standard. The communication can be performed at a high speed (for example, 100 Mbps or more) by channel bonding for connecting a plurality of channels. The wired LAN interface 35 communicates with the FPD 41 by wired communication and receives transmission X-ray data detected by the FPD 41.
　無線ＬＡＮアクセスポイント３３と有線ＬＡＮインターフェイス３５のそれぞれの電源ラインは、電力供給切り替えスイッチ４７を介して電源２３に接続されている。電力供給切り替えスイッチ４７は、切り替えスイッチ４９と、リレー５１とによって構成されている。リレー５１は、ｃ端子が電源２３に接続され、ａ端子が有線ＬＡＮインターフェイス３５の電源に接続され、ｂ端子が無線ＬＡＮアクセスポイント３３の電源に接続されている。切り替えスイッチ４９が非作動の場合には、ｃ端子とｂ端子とが接続され、切り替えスイッチ４９が作動された場合には、その作動に連動してリレー５１が作動し、電源２５のｃ端子とａ端子とが接続される。電力供給切り替えスイッチ４７は、図１中では図示を省略してあるが、撮影者ＤＲによって操作しやすい箇所に取り付けてある。 Each power line of the wireless LAN access point 33 and the wired LAN interface 35 is connected to the power source 23 via a power supply changeover switch 47. The power supply changeover switch 47 includes a changeover switch 49 and a relay 51. The relay 51 has a c terminal connected to the power supply 23, an a terminal connected to the power supply of the wired LAN interface 35, and a b terminal connected to the power supply of the wireless LAN access point 33. When the changeover switch 49 is not activated, the c terminal and the b terminal are connected. When the changeover switch 49 is activated, the relay 51 is operated in conjunction with the operation, and the c terminal of the power source 25 is connected. a terminal is connected. Although not shown in FIG. 1, the power supply changeover switch 47 is attached to a location that can be easily operated by the photographer DR.
　なお、上述したＸ線管２１がこの発明における「Ｘ線照射手段」に相当し、ＰＣ２５がこの発明における「収集手段」に相当し、電力供給切り替えスイッチ４７がこの発明の「干渉防止手段」に相当する。また、リレー５１がこの発明における「電力供給切り替え手段」に相当する。 The X-ray tube 21 described above corresponds to the “X-ray irradiation means” in the present invention, the PC 25 corresponds to the “collection means” in the present invention, and the power supply changeover switch 47 corresponds to the “interference prevention means” in the present invention. Equivalent to. The relay 51 corresponds to “power supply switching means” in the present invention.
　次に、上述した移動型Ｘ線撮影装置１によるＸ線撮影について説明する。 Next, X-ray imaging by the above-described mobile X-ray imaging apparatus 1 will be described.
　無線通信（図２）
　まず、撮影者ＤＲは、移動型Ｘ線撮影装置１を被検体Ｐの場所まで移動させ、ＦＰＤ４１をセットするとともに、Ｘ線管２１をＦＰＤ４１の対向位置にまで移動させる。そして、切り替えスイッチ４９を非作動にしたまま、撮影条件を操作パネル２９から設定して撮影開始を指示する。すると、ＦＰＤ４１で検出された透過Ｘ線データが無線通信により無線ＬＡＮアクセスポイント３３を介してＰＣ２５に収集される。撮影者は、操作パネル２９を操作して、透過Ｘ線データに基づく画像を確認する。 Wireless communication (Figure 2)
First, the radiographer DR moves the mobile X-ray imaging apparatus 1 to the location of the subject P, sets the FPD 41, and moves the X-ray tube 21 to a position facing the FPD 41. Then, with the changeover switch 49 being inactive, the shooting conditions are set from the operation panel 29 and the start of shooting is instructed. Then, the transmitted X-ray data detected by the FPD 41 is collected by the PC 25 via the wireless LAN access point 33 by wireless communication. The photographer operates the operation panel 29 to confirm an image based on the transmitted X-ray data.
　有線通信（図３）
　ここで、無線干渉に起因して、無線通信による透過Ｘ線データの収集ができない事態が生じたとする。撮影者ＤＲは、ケーブル４５の一端側をＦＰＤ４１のコネクタ４３に接続するとともに、ケーブル４５の他端側を有線ＬＡＮインターフェイス３５に接続する。さらに、切り替えスイッチ４９を作動させる。これにより、無線ＬＡＮアクセスポイント３３は電源２３から切り離されるので、無線ＬＡＮアクセスポイント３３の全ての機能が停止される。したがって、無線ＬＡＮアクセスポイント３３からの無線送信が停止されるので、無線干渉を確実に回避することができる。その結果、周囲の無線ＬＡＮ装置に悪影響を与えることがない。 Wired communication (Figure 3)
Here, it is assumed that a situation occurs in which transmission X-ray data cannot be collected by wireless communication due to wireless interference. The photographer DR connects one end side of the cable 45 to the connector 43 of the FPD 41 and connects the other end side of the cable 45 to the wired LAN interface 35. Further, the changeover switch 49 is operated. Thereby, since the wireless LAN access point 33 is disconnected from the power supply 23, all the functions of the wireless LAN access point 33 are stopped. Therefore, since wireless transmission from the wireless LAN access point 33 is stopped, wireless interference can be avoided reliably. As a result, there is no adverse effect on surrounding wireless LAN devices.
　また、無線ＬＡＮアクセスポイント３３への電力供給を完全に遮断しているので、電源２３の電力低下を抑制することができる。したがって、移動型Ｘ線撮影装置１の使用可能時間を延ばすことができる。 In addition, since the power supply to the wireless LAN access point 33 is completely cut off, it is possible to suppress the power reduction of the power source 23. Therefore, the usable time of the mobile X-ray imaging apparatus 1 can be extended.
　次に、図面を参照してこの発明の実施例２を説明する。図４は、実施例２における無線通信時の状態を示すブロック図であり、図５は、実施例２における有線通信時の状態を示すブロック図である。なお、装置の概略構成は、上述した実施例１（図１）と同様であるので、同じ構成については同符号を付して詳細な説明については省略する。 Next, Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 4 is a block diagram illustrating a state during wireless communication according to the second embodiment, and FIG. 5 is a block diagram illustrating a state during wired communication according to the second embodiment. In addition, since the schematic structure of an apparatus is the same as that of Example 1 (FIG. 1) mentioned above, the same code | symbol is attached | subjected about the same structure and detailed description is abbreviate | omitted.
　この実施例２に係る移動型Ｘ線撮影装置１Ａは、電力供給切り替えスイッチ４７を備えていない。無線ＬＡＮアクセスポイント３３と、有線ＬＡＮインターフェイス３５との各々の電源ラインは、電源２３に対して常時接続されている。 The mobile X-ray imaging apparatus 1A according to the second embodiment does not include the power supply changeover switch 47. Each power line of the wireless LAN access point 33 and the wired LAN interface 35 is always connected to the power source 23.
　ＰＣ２５は、有線ＬＡＮインターフェイス３５の信号を監視することにより、ＦＰＤ４１と有線ＬＡＮインターフェイス３５とがケーブル４５で接続されたことを判断できる機能を有する。ＰＣ２５は、ＦＰＤ４１が有線通信で使用されると判断した場合には、無線ＬＡＮアクセスポイント３３の無線機能だけを遮断する。 The PC 25 has a function of determining that the FPD 41 and the wired LAN interface 35 are connected by the cable 45 by monitoring the signal of the wired LAN interface 35. When the PC 25 determines that the FPD 41 is used for wired communication, the PC 25 blocks only the wireless function of the wireless LAN access point 33.
　上述したＰＣ２５は、この発明における「接続検出手段」及び「機能停止手段」に相当する。 The PC 25 described above corresponds to “connection detection means” and “function stop means” in the present invention.
　無線通信（図４）
　撮影者ＤＲは、実施例１で説明したようにして、無線ＬＡＮアクセスポイント３３を介した透過Ｘ線データの収集を行わせ、撮影した画像を確認する。 Wireless communication (Figure 4)
As described in the first embodiment, the photographer DR collects transmission X-ray data via the wireless LAN access point 33 and confirms the photographed image.
　有線通信（図５）
　ここで、無線干渉に起因して、無線通信による透過Ｘ線データの収集ができない事態が生じたとする。撮影者ＤＲは、ケーブル４５の一端側をＦＰＤ４１のコネクタ４３に接続するとともに、ケーブル４５の他端側を有線ＬＡＮインターフェイス３５に接続する。すると、ＰＣ２５は、ケーブル４５が接続されたことを検出して、無線ＬＡＮアクセスポイント３３の無線機能だけを停止させる。したがって、無線ＬＡＮアクセスポイント３３からの無線送信が停止されるので、無線干渉を確実に回避することができる。その結果、周囲の無線ＬＡＮ装置に悪影響を与えることがない。 Wired communication (Figure 5)
Here, it is assumed that a situation occurs in which transmission X-ray data cannot be collected by wireless communication due to wireless interference. The photographer DR connects one end side of the cable 45 to the connector 43 of the FPD 41 and connects the other end side of the cable 45 to the wired LAN interface 35. Then, the PC 25 detects that the cable 45 is connected and stops only the wireless function of the wireless LAN access point 33. Therefore, since wireless transmission from the wireless LAN access point 33 is stopped, wireless interference can be avoided reliably. As a result, there is no adverse effect on surrounding wireless LAN devices.
　この実施例２によると、ＰＣ２５が無線ＬＡＮアクセスポイント３３の無線機能を自動的に停止させるので、撮影者ＤＲが操作等を行う必要がなく確実に無線干渉を回避できる効果も奏する。さらに、無線ＬＡＮアクセスポイント３３の無線機能を停止するだけであって電源を遮断していないので、再び無線ＬＡＮアクセスポイント３３を介した無線通信を行う際には、迅速に再開することができる。 According to the second embodiment, since the PC 25 automatically stops the wireless function of the wireless LAN access point 33, the photographer DR does not need to perform an operation or the like, and it is possible to reliably avoid wireless interference. Furthermore, since the wireless function of the wireless LAN access point 33 is only stopped and the power supply is not shut down, when performing wireless communication again through the wireless LAN access point 33, it can be quickly restarted.
　次に、図面を参照してこの発明の実施例３を説明する。図６は、実施例３における有線通信時の状態を示すブロック図である。なお、装置の概略構成は、上述した実施例１（図１）と同様であるので、同じ構成については同符号を付して詳細な説明については省略する。 Next, Embodiment 3 of the present invention will be described with reference to the drawings. FIG. 6 is a block diagram illustrating a state during wired communication according to the third embodiment. In addition, since the schematic structure of an apparatus is the same as that of Example 1 (FIG. 1) mentioned above, the same code | symbol is attached | subjected about the same structure and detailed description is abbreviate | omitted.
　この実施例３に係る移動型Ｘ線撮影装置１Ｂは、上述した実施例２と同様に、電力供給切り替えスイッチ４９を備えていない。無線ＬＡＮアクセスポイント３３と、有線ＬＡＮインターフェイス３５との各々の電源ラインは、上述した実施例２と同様に、電源２３に対して常時接続されている。 The mobile X-ray imaging apparatus 1B according to the third embodiment does not include the power supply changeover switch 49 as in the second embodiment. Each power line of the wireless LAN access point 33 and the wired LAN interface 35 is always connected to the power source 23 as in the second embodiment.
　ＰＣ２５は、上述した実施例２と同様に有線ＬＡＮインターフェイス３５にケーブル４５が接続されたことを判断できる機能を有する。ＰＣ２５は、ＦＰＤ４１が有線通信で使用されると判断した場合には、無線ＬＡＮアクセスポイント３３の電源を遮断する。 The PC 25 has a function capable of determining that the cable 45 is connected to the wired LAN interface 35 as in the second embodiment. When the PC 25 determines that the FPD 41 is used for wired communication, the PC 25 shuts off the power of the wireless LAN access point 33.
　上述したＰＣ２５は、この発明における「接続検出手段」及び「電源遮断手段」に相当する。 The PC 25 described above corresponds to the “connection detection means” and “power cutoff means” in the present invention.
　無線通信については、上述した実施例２の図４と同様である。つまり、撮影者ＤＲは、無線ＬＡＮアクセスポイント３３を介した透過Ｘ線データの収集を行わせ、撮影した画像を確認する。 Wireless communication is the same as in FIG. 4 of the second embodiment described above. That is, the photographer DR collects transmission X-ray data via the wireless LAN access point 33 and confirms the photographed image.
　有線通信（図６）
　無線干渉に起因して、無線通信による透過Ｘ線データの収集ができない事態が生じた場合、撮影者ＤＲは、ＦＰＤ４１と有線ＬＡＮインターフェイス３５とをケーブル４５で接続する。すると、ＰＣ２５は、ケーブル４５が接続されたことを検出して、無線ＬＡＮアクセスポイント３３の電源を遮断する。したがって、無線ＬＡＮアクセスポイント３３からの無線送信が停止されるので、無線干渉を確実に回避することができる。その結果、周囲の無線ＬＡＮ装置に悪影響を与えることがない。 Wired communication (Figure 6)
When a situation occurs in which transmission X-ray data cannot be collected by wireless communication due to wireless interference, the photographer DR connects the FPD 41 and the wired LAN interface 35 with the cable 45. Then, the PC 25 detects that the cable 45 is connected and shuts off the power supply of the wireless LAN access point 33. Therefore, since wireless transmission from the wireless LAN access point 33 is stopped, wireless interference can be avoided reliably. As a result, there is no adverse effect on surrounding wireless LAN devices.
　この実施例３によると、ＰＣ２５が無線ＬＡＮアクセスポイント３３の電源を自動的に遮断するので、撮影者ＤＲが操作等を行う必要がなく確実に無線干渉を回避できる効果も奏する。さらに、無線ＬＡＮアクセスポイント３３への電力供給を行わないので、電源による装置の使用可能時間を延ばすことができる。 According to the third embodiment, since the PC 25 automatically shuts off the power supply of the wireless LAN access point 33, there is an effect that the radiographer DR can avoid the radio interference without any operation or the like. Furthermore, since power is not supplied to the wireless LAN access point 33, the usable time of the apparatus by the power source can be extended.
　この発明は、上記実施形態に限られることはなく、下記のように変形実施することができる。 The present invention is not limited to the above embodiment, and can be modified as follows.
　（１）上述した各実施例１～３では、無線ＬＡＮアクセスポイント３３がＩＥＥＥ８０２．３ｎの規格による無線通信を行うとしたが、他の無線通信規格であってもこの発明を適用することができる。 (1) In each of the first to third embodiments described above, the wireless LAN access point 33 performs wireless communication according to the IEEE 802.3n standard, but the present invention can be applied to other wireless communication standards. .
　（２）上述した実施例１では、ケーブル４５を接続後に、切り替えスイッチ４９を撮影者ＤＲが切り替えたが、有線ＬＡＮインターフェイス３５側にリミットスイッチなどの検出手段を取り付けておき、ケーブル４５が取り付けられたことを検出手段が検出した場合に、検出手段の検出信号を受信したＰＣ２５が無線ＬＡＮアクセスポイント３３の無線機能を停止させたり、電源を遮断したりするように構成してもよい。 (2) In the above-described first embodiment, the photographer DR switches the changeover switch 49 after the cable 45 is connected. However, a detection unit such as a limit switch is attached to the wired LAN interface 35 side, and the cable 45 is attached. When the detection means detects that, the PC 25 that has received the detection signal of the detection means may stop the wireless function of the wireless LAN access point 33 or shut off the power supply.
　（３）上述した各実施例１～３では、図１に示したような構成を例にとって説明したが、この発明はそのような構成に限定されるもではなく、無線通信または有線通信を行うＦＰＤ４１を備えた移動型Ｘ線撮影装置であれば、この発明を適用することができる。 (3) In each of the first to third embodiments described above, the configuration as shown in FIG. 1 has been described as an example. However, the present invention is not limited to such a configuration, and performs wireless communication or wired communication. The present invention can be applied to any mobile X-ray imaging apparatus including the FPD 41.
　（４）上述した各実施例１～３では、制御ユニット７の前側に有線ＬＡＮインターフェイス３５を備えているが、台車９の前部に備えるようにしてもよい。これにより、ＦＰＤ４１との接続をより簡単に行うことができる。 (4) In each of the first to third embodiments described above, the wired LAN interface 35 is provided on the front side of the control unit 7, but may be provided on the front portion of the carriage 9. Thereby, connection with FPD41 can be performed more simply.
　以上のように、この発明は、無線通信または有線通信の通信を行うフラットパネル型Ｘ線検出器を備えた移動型Ｘ線撮影装置に適している。 As described above, the present invention is suitable for a mobile X-ray imaging apparatus including a flat panel X-ray detector that performs wireless communication or wired communication.

Claims (4)

  1. 　移動可能に構成され、Ｘ線撮影を行う移動型Ｘ線撮影装置において、
    　Ｘ線を照射するＸ線照射手段と、
    　Ｘ線を検出可能であって、無線ＬＡＮまたは有線ＬＡＮのいずれか一方の通信により検出した透過Ｘ線データを送信するフラットパネル型Ｘ線検出器と、
    　前記フラットパネル型Ｘ線検出器と無線通信を行うための無線ＬＡＮアクセスポイントと、
    　前記フラットパネル型Ｘ線検出器とケーブルにより接続され、前記フラットパネル型Ｘ線検出器と有線通信を行うための有線ＬＡＮインターフェイスと、
    　前記無線ＬＡＮアクセスポイントまたは前記有線ＬＡＮインターフェイスのいずれか一方を介して、前記フラットパネル型Ｘ線検出器から透過Ｘ線データを収集する収集手段と、
    　前記無線ＬＡＮアクセスポイント及び前記有線ＬＡＮインターフェイスに電力を供給する電源と、
    　前記無線ＬＡＮアクセスポイントによる無線通信が可能な状態で、前記フラットパネル型Ｘ線検出器と前記有線ＬＡＮインターフェイスとがケーブルで接続された場合には、前記無線ＬＡＮアクセスポイントの機能を停止させる干渉防止手段と、
    　を備えていることを特徴とする移動型Ｘ線撮影装置。     In a mobile X-ray imaging apparatus configured to be movable and performing X-ray imaging,
    X-ray irradiation means for irradiating X-rays;
    A flat panel X-ray detector capable of detecting X-rays and transmitting transmitted X-ray data detected by communication of either a wireless LAN or a wired LAN;
    A wireless LAN access point for performing wireless communication with the flat panel X-ray detector;
    A wired LAN interface connected to the flat panel X-ray detector by a cable and for performing wired communication with the flat panel X-ray detector;
    A collecting means for collecting transmission X-ray data from the flat panel X-ray detector via either the wireless LAN access point or the wired LAN interface;
    A power source for supplying power to the wireless LAN access point and the wired LAN interface;
    Interference prevention that stops the function of the wireless LAN access point when the flat panel X-ray detector and the wired LAN interface are connected with a cable while wireless communication by the wireless LAN access point is possible Means,
    A mobile X-ray imaging apparatus comprising:
  2. 　請求項１に記載の移動型Ｘ線撮影装置において、
    　前記干渉防止手段は、
    　前記フラットパネル型Ｘ線検出器と前記有線ＬＡＮインターフェイスとがケーブルで接続された後、撮影者によって操作される切り替えスイッチと、
    　前記切り替えスイッチに連動して、前記無線ＬＡＮアクセスポイントから前記有線ＬＡＮインターフェイスへ前記電源からの電力供給先を切り替える電力供給切り替え手段と、
    　を備えていることを特徴とする移動型Ｘ線撮影装置。     The mobile X-ray imaging apparatus according to claim 1,
    The interference preventing means is
    A changeover switch operated by a photographer after the flat panel X-ray detector and the wired LAN interface are connected by a cable;
    Power supply switching means for switching a power supply destination from the power source from the wireless LAN access point to the wired LAN interface in conjunction with the changeover switch;
    A mobile X-ray imaging apparatus comprising:
  3. 　請求項１に記載の移動型Ｘ線撮影装置において、
    　前記有線ＬＡＮインターフェイスは、前記電源から常時電力が供給されており、
    　前記干渉防止手段は、
    　前記フラットパネル型Ｘ線検出器と前記有線ＬＡＮインターフェイスとがケーブルで接続されたことを検出する接続検出手段と、
    　前記接続検出手段が接続を検出した場合には、前記無線ＬＡＮアクセスポイントの無線機能のみを停止させる機能停止手段と、
    　を備えていることを特徴とする移動型Ｘ線撮影装置。     The mobile X-ray imaging apparatus according to claim 1,
    The wired LAN interface is constantly supplied with power from the power source,
    The interference preventing means is
    Connection detecting means for detecting that the flat panel X-ray detector and the wired LAN interface are connected by a cable;
    If the connection detection means detects a connection, a function stop means for stopping only the wireless function of the wireless LAN access point;
    A mobile X-ray imaging apparatus comprising:
  4. 　請求項１に記載の移動型Ｘ線撮影装置において、
    　前記有線ＬＡＮインターフェイスは、前記電源から常時電力が供給されており、
    　前記干渉防止手段は、
    　前記フラットパネル型Ｘ線検出器と前記有線ＬＡＮインターフェイスとがケーブルで接続されたことを検出する接続検出手段と、
    　前記接続検出手段が接続を検出した場合には、前記無線ＬＡＮアクセスポイントの電源を遮断する電源遮断手段と、
    　を備えていることを特徴とする移動型Ｘ線撮影装置。     The mobile X-ray imaging apparatus according to claim 1,
    The wired LAN interface is constantly supplied with power from the power source,
    The interference preventing means is
    Connection detecting means for detecting that the flat panel X-ray detector and the wired LAN interface are connected by a cable;
    When the connection detecting means detects a connection, a power cutoff means for shutting off the power of the wireless LAN access point;
    A mobile X-ray imaging apparatus comprising:
PCT/JP2010/006851 2010-11-24 2010-11-24 Mobile x-ray imaging apparatus WO2012070084A1 (en)

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