JP2005177047A - Arm-driving type radiation tomographic apparatus - Google Patents

Arm-driving type radiation tomographic apparatus Download PDF

Info

Publication number
JP2005177047A
JP2005177047A JP2003420428A JP2003420428A JP2005177047A JP 2005177047 A JP2005177047 A JP 2005177047A JP 2003420428 A JP2003420428 A JP 2003420428A JP 2003420428 A JP2003420428 A JP 2003420428A JP 2005177047 A JP2005177047 A JP 2005177047A
Authority
JP
Japan
Prior art keywords
radiation
arm
guard member
ray tube
fpd
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2003420428A
Other languages
Japanese (ja)
Inventor
Naotaka Morita
尚孝 森田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimadzu Corp
Original Assignee
Shimadzu Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP2003420428A priority Critical patent/JP2005177047A/en
Publication of JP2005177047A publication Critical patent/JP2005177047A/en
Withdrawn legal-status Critical Current

Links

Images

Landscapes

  • Apparatus For Radiation Diagnosis (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To easily prevent obstacles from entering a moving area of an X-ray tube or a sheet-like radiation detecting means. <P>SOLUTION: The subject tomographic apparatus has guard members 16 and 17 for covering moving areas of the X-ray tube 2 to move according to a C-arm 1 driven by an arm driving mechanism 4 and of a flat panel detector (FPD) 3 as a sheet-like radiation detecting means, respectively. The X-ray tube 2 and the FPD 3 are moved on the inner side of the guard members 16 and 17. Since the moving areas of the X-ray tube 2 and the FPD 3 can be accurately grasped at a glance with the guard members 16 and 17, disposed to cover the moving areas of the X-ray tube 2 and the FPD 3 as marks, entrance of an obstacle to the moving area of the X-ray tube 2 or of the FPD 3 is prevented. In this way, entrance of obstacles in the X-ray tube 2 or the FPD 3 can be easily prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、アームの一端と他端に対向配置されている放射線照射手段および面状放射線検出手段と、放射線照射手段と面状放射線検出手段との対向配置を維持した状態で撮影対象の被検体に対する放射線照射方向を変える移動を行うためにアームを駆動するアーム駆動手段とを備え、アーム駆動手段が行うアームの駆動による移動に応じて放射線照射方向が変化した放射線照射手段の放射線照射に伴って面状放射線検出手段から出力される放射線検出信号に基づいて被検体の放射線断層画像を取得するアーム駆動式放射線断層撮影装置に係り、特にアーム駆動手段によるアームの駆動に伴って移動する放射線照射手段や面状放射線検出手段の移動エリアに障害物が入り込まないようにするための技術に関する。   The present invention relates to a subject to be imaged in a state in which the radiation irradiation means and the planar radiation detection means that are arranged opposite to one end and the other end of the arm, and the opposed arrangement of the radiation irradiation means and the planar radiation detection means is maintained. Arm driving means for driving the arm to change the radiation irradiation direction with respect to the radiation, and the radiation irradiation means whose radiation irradiation direction has changed according to the movement by the arm driving performed by the arm driving means BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arm-driven radiation tomography apparatus that acquires a radiation tomographic image of a subject based on a radiation detection signal output from a planar radiation detection means, and in particular, a radiation irradiation means that moves as the arm is driven by the arm drive means. The present invention relates to a technique for preventing an obstacle from entering a moving area of a surface radiation detecting means.

近年、医療現場では、Ｃ型アーム駆動式Ｘ線断層撮影装置によるＸ線断層撮影が、病気診断のみならず手術支援にも用いられており、例えば手術中の被検体の術野周辺の血管構成をＸ線断層撮影で確認しながら手術を進めることが実際に行われている。
従来のＣ型アーム駆動式Ｘ線断層撮影装置は、図１６に示すように、全体形状がＣ字状のＣ型アーム５１の一端と他端に対向配置されているＸ線管５２およびイメージインテンシファイアなどの面状Ｘ線検出器５３を備え、図１７に示すように、Ｃ型アーム５１の駆動によって、Ｘ線管５２と面状Ｘ線検出器５３との対向配置を維持した状態で撮影対象の被検体Ｍに対するＸ線照射方向を変える移動を行いながら、Ｘ線管５２がＸ線を照射すると同時に面状Ｘ線検出器５３が透過Ｘ線の検出を行う。さらに、面状Ｘ線検出器５３の後段で、面状Ｘ線検出器５３から出力されるＸ線検出信号に基づいて被検体ＭのＸ線断層画像を取得する（特許文献１）。
特開２００２−２６３０９３号公報（第２頁および図１，図２） In recent years, X-ray tomography using a C-arm-driven X-ray tomography apparatus has been used not only for diagnosing diseases but also for surgical support in the medical field. For example, blood vessel configuration around the surgical field of a subject during surgery It is actually performed to proceed with surgery while confirming this by X-ray tomography.
As shown in FIG. 16, a conventional C-arm drive type X-ray tomography apparatus includes an X-ray tube 52 and an image-in which are opposed to one end and the other end of a C-shaped arm 51 having an overall C-shape. A planar X-ray detector 53 such as a tensiifier is provided, and as shown in FIG. 17, the opposing arrangement of the X-ray tube 52 and the planar X-ray detector 53 is maintained by driving the C-shaped arm 51. While moving the X-ray irradiation direction with respect to the subject M to be imaged, the X-ray tube 52 irradiates X-rays, and at the same time, the planar X-ray detector 53 detects transmitted X-rays. Furthermore, an X-ray tomographic image of the subject M is acquired at the subsequent stage of the planar X-ray detector 53 based on the X-ray detection signal output from the planar X-ray detector 53 (Patent Document 1).
Japanese Patent Laid-Open No. 2002-263093 (second page and FIGS. 1 and 2)

しかしながら、このような構成を有する従来のＣ型アーム駆動式Ｘ線断層撮影装置の場合には、Ｘ線管５２や面状Ｘ線検出器５３の移動エリアに障害物が入り込み、Ｘ線断層撮影の際にＸ線管５２や面状Ｘ線検出器５３が障害物に当たってＸ線管５２や面状Ｘ線検出器５３の移動が妨げられるという問題がある。   However, in the case of the conventional C-arm drive type X-ray tomography apparatus having such a configuration, an obstacle enters the moving area of the X-ray tube 52 or the planar X-ray detector 53 and the X-ray tomography is detected. In this case, there is a problem that the X-ray tube 52 and the planar X-ray detector 53 hit an obstacle and the movement of the X-ray tube 52 and the planar X-ray detector 53 is hindered.

すなわち、従来のＣ型アーム駆動式Ｘ線断層撮影装置では、Ｘ線管５２や面状Ｘ線検出器５３の移動エリアがはっきりと把握できない。その結果、Ｘ線管５２や面状Ｘ線検出器５３の移動エリアに他の医療用の装置や器具などが入り込んでセットしてしまったり、手術中に医師やオペレータの体の一部がＸ線管５２や面状Ｘ線検出器５３の移動エリアに不用意に入り込んだりする事態が起こる。そして、これら他の医療用の装置や器具、あるいは、医師やオペレータの体の一部がＸ線管５２や面状Ｘ線検出器５３が移動の際に当たる障害物になってしまう。Ｘ線管５２や面状Ｘ線検出器５３の移動が障害物で妨げられると、Ｘ線断層画像が適正に取得できなかったり、Ｘ線断層撮影が途中でストップしまったりすることになる。   That is, in the conventional C-arm drive type X-ray tomography apparatus, the moving area of the X-ray tube 52 and the planar X-ray detector 53 cannot be grasped clearly. As a result, other medical devices or instruments may enter and set in the moving area of the X-ray tube 52 or the planar X-ray detector 53, or a part of the body of the doctor or operator may become X during surgery. A situation may occur in which the moving area of the X-ray tube 52 or the planar X-ray detector 53 is inadvertently entered. These other medical devices and instruments, or a part of the doctor's or operator's body, become obstacles to which the X-ray tube 52 or the planar X-ray detector 53 hits. If the movement of the X-ray tube 52 or the planar X-ray detector 53 is obstructed by an obstacle, the X-ray tomographic image cannot be acquired properly, or the X-ray tomography is stopped halfway.

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、放射線照射手段や面状放射線検出手段の移動エリアに障害物が入り込むことを容易に回避することができるアーム駆動式放射線断層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 arm-driven radiation tomography that can easily prevent an obstacle from entering the moving area of the radiation irradiation means or the planar radiation detection means. An object is to provide an apparatus.

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、請求項１に記載の発明に係るアーム駆動式放射線断層撮影装置は、アームの一端と他端に対向配置されている放射線照射手段および面状放射線検出手段と、放射線照射手段と面状放射線検出手段との対向配置を維持した状態で撮影対象の被検体に対する放射線照射方向を変える移動を行うためにアームを駆動するアーム駆動手段とを備え、アーム駆動手段が行うアームの駆動による移動に応じて放射線照射方向が変化した放射線照射手段の放射線照射に伴って面状放射線検出手段から出力される放射線検出信号に基づいて被検体の放射線断層画像を取得するアーム駆動式放射線断層撮影装置において、アーム駆動手段によるアームの駆動に伴って移動する放射線照射手段と面状放射線検出手段の移動エリアを覆うガード部材が配設されていて、このガード部材よりも内側を放射線照射手段および面状放射線検出手段が移動す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 arm drive type radiation tomography apparatus according to the first aspect of the present invention includes a radiation irradiating means and a planar radiation detecting means disposed opposite to one end and the other end of the arm, the radiation irradiating means and the planar radiation. Arm driving means for driving an arm to move the irradiation direction of the subject to be imaged while maintaining the opposing arrangement with the detecting means, and according to the movement of the arm driven by the arm driving means. In an arm-driven radiation tomography apparatus that acquires a radiation tomographic image of a subject based on a radiation detection signal output from a planar radiation detection means in accordance with radiation irradiation of the radiation irradiation means whose radiation irradiation direction has changed, A guard member covering the moving area of the radiation irradiating means and the planar radiation detecting means that moves as the arm is driven by the driving means is provided. It has been, the inner side than the guard member is a radiation emitting device and the planar radiation detecting device is characterized in that movement.

［作用・効果］請求項１に記載の発明のアーム駆動式放射線断層撮影装置（以下、適宜「断層撮影装置」と略記）により放射線断層撮影が実行される場合、アームの一端と他端に対向配置されている放射線照射手段および面状放射線検出手段が、アーム駆動手段が行うアームの駆動により、対向配置を維持した状態で撮影対象の被検体に対する放射線照射方向を変化させると同時に、放射線照射手段の放射線照射に伴って面状放射線検出手段が出力する放射線検出信号に基づき被検体の放射線断層画像が取得される。   [Operation / Effect] When radiation tomography is executed by the arm-driven radiation tomography apparatus of the invention described in claim 1 (hereinafter abbreviated as “tomography apparatus” as appropriate), the arm faces one end and the other end. The arranged radiation irradiation means and the planar radiation detection means change the radiation irradiation direction with respect to the subject to be imaged while maintaining the opposing arrangement by driving the arm performed by the arm driving means, and at the same time, the radiation irradiation means A radiation tomographic image of the subject is acquired based on the radiation detection signal output by the planar radiation detection means with the radiation irradiation.

さらに、請求項１の発明の断層撮影装置では、アーム駆動手段のアームの駆動に伴って移動する放射線照射手段と面状放射線検出手段の移動エリアを覆うガード部材が配設されていて、放射線断層撮影の際、放射線照射手段および面状放射線検出手段がアーム駆動手段によるアームの駆動に伴ってガード部材よりも内側をガード部材に当たることなく速やかに移動する。   Furthermore, in the tomographic apparatus of the first aspect of the present invention, the radiation irradiating means that moves in accordance with the driving of the arm of the arm driving means and the guard member that covers the moving area of the planar radiation detecting means are provided, At the time of imaging, the radiation irradiating means and the planar radiation detecting means move quickly inside the guard member without hitting the guard member as the arm is driven by the arm driving means.

したがって、請求項１の発明の断層撮影装置の場合、アーム駆動手段によるアームの駆動に伴って移動する放射線照射手段と面状放射線検出手段の移動エリアを覆って配設されたガード部材が目安となって、放射線照射手段や面状放射線検出手段の移動エリアが一目で正確に把握できるので、放射線照射手段や面状放射線検出手段の移動エリアに障害物が入り込むことが容易に回避できる。   Therefore, in the case of the tomographic apparatus according to the first aspect of the present invention, the radiation irradiation means that moves as the arm is driven by the arm driving means and the guard member that covers the moving area of the planar radiation detection means are used as a guide. Thus, since the moving area of the radiation irradiating means and the planar radiation detecting means can be accurately grasped at a glance, it is possible to easily avoid an obstacle from entering the moving area of the radiation irradiating means and the planar radiation detecting means.

また、請求項２に記載の発明は、請求項１に記載のアーム駆動式放射線断層撮影装置において、ガード部材は着脱可能に配設されているものである。   According to a second aspect of the present invention, in the arm-driven radiation tomography apparatus according to the first aspect, the guard member is detachably disposed.

［作用・効果］請求項２に記載の発明の断層撮影装置の場合、ガード部材が着脱可能になっていて、ガード部材が撮影の障害になる時はガード部材を離脱させ、また逆にガード部材が必要な時には外されたガード部材を再装着させることが可能になるので、ガード部材が放射線断層撮影の妨げとなる心配がない。   [Operation / Effect] In the tomographic apparatus of the invention described in claim 2, when the guard member is detachable and the guard member becomes an obstacle to photographing, the guard member is detached, and conversely the guard member. Since it becomes possible to reattach the removed guard member when necessary, there is no concern that the guard member will interfere with radiation tomography.

また、請求項３に記載の発明は、請求項１または２に記載のアーム駆動式放射線断層撮影装置において、ガード部材を移動エリアと移動エリア外の退避位置との間で移動させるガード部材移動手段を備えているものである。   The invention according to claim 3 is the arm driving type radiation tomography apparatus according to claim 1 or 2, wherein the guard member moving means moves the guard member between the moving area and a retracted position outside the moving area. It is equipped with.

［作用・効果］請求項３に記載の発明の断層撮影装置の場合、ガード部材が撮影の障害になる時はガード部材移動手段でガード部材を移動エリア外の退避位置へ移動させることが可能になるので、ガード部材が放射線断層撮影の障害となる事態が仮に起こったとしても簡単に解消することができる。   [Operation / Effect] In the tomographic apparatus of the invention described in claim 3, when the guard member becomes an obstacle to photographing, the guard member can be moved to the retracted position outside the moving area by the guard member moving means. Therefore, even if a situation in which the guard member becomes an obstacle to radiation tomography occurs, it can be easily solved.

また、請求項４に記載の発明は、請求項１から３のいずれかに記載のアーム駆動式放射線断層撮影装置において、アーム駆動手段によるアームの駆動により放射線照射手段および面状放射線検出手段が被検体の周りを非周回的に移動するとともに、ガード部材によって放射線照射手段や面状放射線検出手段の移動エリアが全体的に覆われているものである。   According to a fourth aspect of the present invention, in the arm-driven radiation tomography apparatus according to any one of the first to third aspects, the radiation irradiating means and the planar radiation detecting means are covered by arm driving by the arm driving means. While moving around the sample in a non-circular manner, the movement area of the radiation irradiating means and the planar radiation detecting means is entirely covered by the guard member.

［作用・効果］請求項４に記載の発明の断層撮影装置の場合、放射線照射手段および面状放射線検出手段を被検体の周りを非周回的に移動させるだけで放射線断層画像が取得できる。また、ガード部材によって放射線照射手段や面状放射線検出手段の移動エリアが全体的に覆われているので、放射線照射手段や面状放射線検出手段の移動エリアをまとめて覆った状態でガード部材が配設できる。   [Operation / Effect] In the tomography apparatus according to the invention described in claim 4, a radiation tomographic image can be acquired by simply moving the radiation irradiating means and the planar radiation detecting means around the subject non-circularly. In addition, since the moving area of the radiation irradiating means and the planar radiation detecting means is entirely covered by the guard member, the guard member is arranged in a state where the moving areas of the radiation irradiating means and the planar radiation detecting means are collectively covered. Can be set.

また、請求項５に記載の発明は、請求項１から４のいずれかに記載のアーム駆動式放射線断層撮影装置において、アーム駆動手段によるアームの駆動により放射線照射手段および面状放射線検出手段が被検体の周りを周回的に移動するとともに、ガード部材によって放射線照射手段や面状放射線検出手段の移動エリアが局所的あるいは全体的に覆われているものである。   According to a fifth aspect of the present invention, in the arm-driven radiation tomography apparatus according to any one of the first to fourth aspects, the radiation irradiating means and the planar radiation detecting means are covered by the arm driving by the arm driving means. While moving around the specimen, the moving area of the radiation irradiating means and the planar radiation detecting means is covered locally or entirely by the guard member.

［作用・効果］請求項５に記載の発明の断層撮影装置の場合、放射線照射手段および面状放射線検出手段を被検体の周りを周回的に移動させることで、周回方向で形成された平面と同一断面の放射線断層画像が取得できる。また、ガード部材は放射線照射手段や面状放射線検出手段の移動エリアだけが局所的、あるいは移動エリアが全体的に覆われていて、放射線照射手段や面状放射線検出手段の移動エリアだけを限定的に覆った状態、あるいは移動エリアを全体的に覆った状態でガード部材が配設できる。   [Operation / Effect] In the case of the tomography apparatus of the invention described in claim 5, a plane formed in the circumferential direction by moving the radiation irradiating means and the planar radiation detecting means around the subject in a circular manner; A radiation tomographic image of the same cross section can be acquired. Further, the guard member is limited only to the moving area of the radiation irradiating means and the planar radiation detecting means, or the moving area is entirely covered, and only the moving area of the radiation irradiating means and the planar radiation detecting means is limited. The guard member can be disposed in a state of covering the moving area or covering the entire moving area.

請求項１の発明のアーム駆動式放射線断層撮影装置の場合、アームの一端と他端に対向配置されている放射線照射手段および面状放射線検出手段がアーム駆動手段のアームの駆動に伴って移動する移動エリアを覆うガード部材が配設され、放射線断層撮影の際、放射線照射手段および面状放射線検出手段がガード部材よりも内側をガード部材に妨げられることなく速やかに移動する構成を備えている。放射線照射手段と面状放射線検出手段の移動エリアを覆うかたちで配設されているガード部材が目安になって放射線照射手段や面状放射線検出手段の移動エリアを一目で正確に把握できるので、放射線照射手段や面状放射線検出手段の移動エリアに障害物が入り込まないようになる。   In the arm-driven radiation tomography apparatus according to the first aspect of the present invention, the radiation irradiating means and the planar radiation detecting means arranged opposite to one end and the other end of the arm move as the arm of the arm driving means is driven. A guard member is provided to cover the moving area, and the radiation irradiating means and the planar radiation detecting means move quickly inside the guard member without being obstructed by the guard member at the time of radiation tomography. Since the guard member arranged to cover the movement area of the radiation irradiation means and the planar radiation detection means can be used as a guideline, the movement area of the radiation irradiation means and the planar radiation detection means can be accurately grasped at a glance. Obstacles do not enter the moving area of the irradiation means or the planar radiation detection means.

よって、請求項１の発明のアーム駆動式放射線断層撮影装置によれば、放射線断層撮影の際に放射線照射手段や面状放射線検出手段の移動エリアに障害物が入り込むことを容易に回避することができる。   Therefore, according to the arm-driven radiation tomography apparatus of the first aspect of the present invention, it is possible to easily avoid an obstacle from entering the moving area of the radiation irradiation means or the planar radiation detection means during the radiation tomography. it can.

この発明の実施例１を図面を参照して説明する。図１は実施例１に係る医用のＣ型アーム駆動式Ｘ線断層撮影装置の全体的な構成を示すブロック図である。   A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating an overall configuration of a medical C-arm drive X-ray tomography apparatus according to the first embodiment.

実施例１の断層撮影装置は、図１に示すように、全体形状がＣ字状のＣ型アーム１の一端と他端に対向配置されているＸ線管２およびフラットパネル型Ｘ線検出器（ＦＰＤ）３と、Ｘ線管２とＦＰＤ３との配置位置を維持した状態で天板Ｂに載置された撮影対象の被検体Ｍに対するＸ線照射方向を変える移動を行うためにＣ型アーム１を駆動するアーム駆動機構４を有した円柱状部材１１とが移動式台車５に立設された柱状支持部材６に配備されている。さらに断層撮影装置には、ＦＰＤ３の後段に、Ｘ線管２のＸ線照射に伴ってＦＰＤ３から出力されるＸ線検出信号を収集記憶するデータ収集記憶部７と、データ収集記憶部７に記憶されたＸ線検出信号に基づいてＸ線断層画像を取得する再構成処理部８と、Ｘ線断層画像表示用の表示モニタ９やＸ線断層画像出力用の画像出力機器１０などが配備されている。   As shown in FIG. 1, the tomography apparatus of Embodiment 1 includes an X-ray tube 2 and a flat panel X-ray detector that are arranged opposite to one end and the other end of a C-shaped arm 1 having an overall C-shape. A C-type arm for performing movement to change the X-ray irradiation direction with respect to the subject M to be imaged placed on the top board B while maintaining the position of the (FPD) 3, the X-ray tube 2 and the FPD 3. A columnar member 11 having an arm drive mechanism 4 for driving 1 is disposed on a columnar support member 6 erected on a movable carriage 5. Further, in the tomography apparatus, a data collection storage unit 7 that collects and stores an X-ray detection signal output from the FPD 3 with the X-ray irradiation of the X-ray tube 2 is stored in the subsequent stage of the FPD 3, and is stored in the data collection storage unit 7. A reconstruction processing unit 8 that acquires an X-ray tomographic image based on the X-ray detection signal, a display monitor 9 for displaying an X-ray tomographic image, an image output device 10 for outputting an X-ray tomographic image, and the like are provided. Yes.

Ｃ型アーム１は柱状支持部材６の上端側に水平に取り付けられている円柱状部材１１のアーム駆動機構４の先端に受け支えられており、アーム駆動機構４が中心軸を回転軸として回転可能に付設されているので、Ｃ型アーム１は、矢印ＲＡで示すように、アーム駆動機構４が回転するのに伴ってアーム駆動機構４の中心軸周りに回転するロータリー回転を行う。また、Ｃ型アーム１は、矢印ＲＢで示すように、Ｃ型アーム１がアーム長手方向の湾曲部に沿ってスライド回転可能にアーム駆動機構４に取り付けられている。   The C-shaped arm 1 is supported and supported by the tip of the arm drive mechanism 4 of the columnar member 11 that is horizontally attached to the upper end side of the columnar support member 6, and the arm drive mechanism 4 can rotate about the central axis as a rotation axis. Therefore, the C-arm 1 performs a rotary rotation that rotates around the central axis of the arm drive mechanism 4 as the arm drive mechanism 4 rotates, as indicated by an arrow RA. Further, as indicated by an arrow RB, the C-type arm 1 is attached to the arm drive mechanism 4 so that the C-type arm 1 can slide and rotate along a curved portion in the arm longitudinal direction.

そして、アーム駆動機構４は、連動制御部１２のコントロールにしたがってＣ型アーム１の駆動を行ってＣ型アーム１をロータリー回転ないしスライド回転させることでＸ線管２およびＦＰＤ３を移動させることによりＸ線管２のＸ線照射方向を変化させる。Ｘ線管２のＸ線照射方向を変化させるＸ線管２およびＦＰＤ３の具体的な移動形態は、連動制御部１２のコントロールによって決まるのであるが、実施例１の断層撮影装置の場合の移動形態は、Ｘ線管２およびＦＰＤ３の対向配置を維持した状態で被検体Ｍの周りを非周回的に連動して移動する。例えば、Ｘ線管２およびＦＰＤ３は、図２ないし図３に示すように、円盤状の移動エリアの内側を円を描くように移動する形態が挙げられ、この場合は、Ｘ線照射方向の変化は歳差運動的な変化になる。また、Ｘ線管２およびＦＰＤ３が、円弧状の移動エリアの内側を円弧を描くように移動する形態も挙げられ、この場合は、Ｘ線照射方向の変化は遊技用のシーソーの動きに似た変化になる。   Then, the arm driving mechanism 4 drives the C-type arm 1 according to the control of the interlock control unit 12 and rotates the C-type arm 1 by rotating or slidingly rotating the X-ray tube 2 and the FPD 3 to move the X-type tube 1. The X-ray irradiation direction of the tube 2 is changed. The specific movement mode of the X-ray tube 2 and the FPD 3 for changing the X-ray irradiation direction of the X-ray tube 2 is determined by the control of the interlock control unit 12, but the movement mode in the case of the tomography apparatus of the first embodiment. Moves around the subject M in a non-circulating manner while maintaining the opposing arrangement of the X-ray tube 2 and the FPD 3. For example, as shown in FIGS. 2 to 3, the X-ray tube 2 and the FPD 3 can move in a circular shape inside a disk-shaped moving area. In this case, the X-ray irradiation direction changes. Becomes a precessional change. In addition, there is a mode in which the X-ray tube 2 and the FPD 3 move so as to draw an arc inside the arc-shaped moving area. In this case, the change in the X-ray irradiation direction is similar to the movement of a game seesaw Become a change.

実施例１の装置によってＸ線断層撮影が行われる場合、Ｘ線管２およびＦＰＤ３が、図２に示すように、アーム駆動機構４が行うＣ型アーム１の駆動によりＸ線管２がＸ線照射方向を変化させながら照射制御部１３のコントロールにしたがってＸ線を被検体Ｍに照射すると同時に、Ｘ線照射方向の異なる各Ｘ線照射に伴ってＦＰＤ３から出力されるＸ線検出信号がデータ収集記憶部７へ収集記憶される。さらに、再構成処理部８がデータ収集記憶部７に収集記憶されたＸ線検出信号群に基づいて断層像の再構成処理を実行することでＸ線断層画像を作成する。   When X-ray tomography is performed by the apparatus of the first embodiment, the X-ray tube 2 and the FPD 3 are driven by the C-type arm 1 performed by the arm driving mechanism 4 as shown in FIG. While irradiating the subject M with X-rays according to the control of the irradiation control unit 13 while changing the irradiation direction, X-ray detection signals output from the FPD 3 with each X-ray irradiation with different X-ray irradiation directions are collected. Collected and stored in the storage unit 7. Further, the reconstruction processing unit 8 executes tomographic reconstruction processing based on the X-ray detection signal group collected and stored in the data collection storage unit 7 to create an X-ray tomographic image.

実施例１の装置の場合、Ｘ線管２とＦＰＤ３を被検体Ｍの周りを非周回的に移動させるだけでＸ線断層画像が取得できる。Ｘ線管２とＦＰＤ３が被検体の周りを非周回的に移動する方式は、被検体Ｍの体軸と平行な断面のＸ線断層画像を取得するのに有効である。こうして取得されたＸ線断層画像は表示モニタ９の画面に映像として表示されたり、画像出力機器１０から（印画紙に画像を焼き付けた）Ｘ線写真や（可搬メディアに画像を記憶した）電子写真として出力される。   In the case of the apparatus of the first embodiment, an X-ray tomographic image can be acquired simply by moving the X-ray tube 2 and the FPD 3 around the subject M non-circularly. The method in which the X-ray tube 2 and the FPD 3 move around the subject non-circularly is effective in obtaining an X-ray tomographic image having a cross section parallel to the body axis of the subject M. The X-ray tomographic image acquired in this way is displayed as a video on the screen of the display monitor 9, or an X-ray photograph (an image is printed on a photographic paper) or an electronic (an image is stored on a portable medium) from the image output device 10. Output as a photo.

なお、アーム駆動機構４は電動モータと回転ギヤによる回転機構やラック・ピニオンによる移動機構を適当に組み合わせて構成されている。また、撮影制御部１４は、ＣＰＵと動作プログラムを中心に構成されており、撮影の進行状況や操作部１５の入力操作に応じて指令信号やデータを連動制御部１２や照射制御部１３など各部へ送出し、装置全体の動きを司る。   The arm driving mechanism 4 is configured by appropriately combining a rotating mechanism using an electric motor and a rotating gear and a moving mechanism using a rack and pinion. In addition, the imaging control unit 14 is configured mainly with a CPU and an operation program. The imaging control unit 14 sends command signals and data to each unit such as the interlocking control unit 12 and the irradiation control unit 13 in accordance with the progress of imaging and the input operation of the operation unit 15. To control the movement of the entire device.

さらに、実施例１のＸ線断層撮影装置は、アーム駆動機構４によるＣ型アーム１の駆動に伴って移動するＸ線管２の移動エリアを全体的に覆うガード部材１６とＦＰＤ３の円盤状の移動エリアを全体的に覆うガード部材１７が配設されていて、各ガード部材１６，１７よりも内側をＸ線管２およびＦＰＤ３が移動する構成を特徴としている。Ｘ線断層撮影の際、Ｘ線管２およびＦＰＤ３はガード部材１６，１７よりも内側をガード部材１６，１７に当たることなく速やかに移動するので、Ｘ線管２およびＦＰＤ３の移動がガード部材１６，１７で妨げられることはない。   Furthermore, the X-ray tomography apparatus according to the first embodiment has a disc-like shape of the guard member 16 and the FPD 3 that entirely covers the moving area of the X-ray tube 2 that moves as the C-type arm 1 is driven by the arm driving mechanism 4. A guard member 17 that covers the entire moving area is provided, and the X-ray tube 2 and the FPD 3 move inside the guard members 16 and 17. During X-ray tomography, the X-ray tube 2 and the FPD 3 move quickly inside the guard members 16, 17 without hitting the guard members 16, 17. 17 will not prevent you.

そして、Ｘ線管２およびＦＰＤ３の移動エリアを覆って配設されているガード部材１６，１７が目安となって、Ｘ線管２およびＦＰＤ３の移動エリアが一目で正確に把握できるので、Ｘ線管２やＦＰＤ３の移動エリアに他の医療用の装置や器具などが入り込んでセットしてしまったり、手術中に医師やオペレータの体の一部がＸ線管２やＦＰＤ３の移動エリアに不用意に入り込んだりする事態が回避され、Ｘ線管２やＦＰＤ３の移動エリアに障害物が入り込まないようになる。   Since the guard members 16 and 17 disposed so as to cover the moving area of the X-ray tube 2 and the FPD 3 can be used as a guide, the moving area of the X-ray tube 2 and the FPD 3 can be accurately grasped at a glance. Other medical devices or instruments may enter and set in the moving area of the tube 2 or FPD3, or a part of the body of the doctor or operator may be inadvertently moved in the moving area of the X-ray tube 2 or FPD3 The situation of entering is avoided, and an obstacle does not enter the moving area of the X-ray tube 2 or the FPD 3.

よって、実施例１のＣ型アーム駆動式Ｘ線断層撮影装置によれば、Ｘ線管２やＦＰＤ３の移動エリアに障害物が入り込むことを容易に回避することができる。また、ガード部材１６，１７によってＸ線管２およびＦＰＤ３の各円盤状の移動エリアがそれぞれ全体的に覆われているので、各ガード部材１６，１７は各移動エリアをまとめて覆った状態で配設できる。   Therefore, according to the C-arm drive type X-ray tomography apparatus of Example 1, it is possible to easily avoid an obstacle from entering the moving area of the X-ray tube 2 or the FPD 3. Further, since the respective disc-shaped moving areas of the X-ray tube 2 and the FPD 3 are entirely covered by the guard members 16 and 17, the guard members 16 and 17 are arranged in a state of covering the moving areas together. Can be set.

サポートロッド１８，１９は円柱状部材１１に取り付けられている。ガード部材１６，１７は、図４（ａ）および図５（ａ）に示すように、底の浅いお盆状の全体形状を有し、図１に示すように、底を外側に向けた状態でサポートロッド１８，１９の先端に着脱可能に取り付けられている。ガード部材１６は、ガード部材１６の側面をサポートロッド１８の先端のフランジ部１８ａに取り付けネジ２０でネジ止めされており、取り付けネジ２０をゆるめて外せば、ガード部材１６を離脱することができる。ガード部材１７も、ガード部材１７の側面がサポートロッド１９の先端のフランジ部１９ａに取り付けネジ２１でネジ止めされており、取り付けネジ２１をゆるめて外せば、ガード部材１７を離脱することができる。   The support rods 18 and 19 are attached to the cylindrical member 11. As shown in FIGS. 4A and 5A, the guard members 16 and 17 have a shallow basin-like overall shape, and the bottom is directed outward as shown in FIG. The support rods 18 and 19 are detachably attached to the tips. The guard member 16 has the side surface of the guard member 16 screwed to the flange portion 18a at the tip of the support rod 18 with a mounting screw 20, and the guard member 16 can be detached by loosening and removing the mounting screw 20. The side surface of the guard member 17 is also screwed to the flange portion 19a at the tip of the support rod 19 with a mounting screw 21, and the guard member 17 can be detached by loosening and removing the mounting screw 21.

したがって、実施例１の装置の場合、ガード部材１６，１７が撮影の障害になる時は障害となるガード部材を離脱させ、また逆にガード部材１６，１７が必要な時には外されているガード部材を再装着させることが可能になるので、ガード部材１６，１７でＸ線断層撮影が妨げられる心配はない。   Therefore, in the case of the apparatus according to the first embodiment, when the guard members 16 and 17 become an obstacle to photographing, the guard member that becomes an obstacle is detached, and conversely, the guard members 16 and 17 are removed when necessary. Therefore, there is no concern that X-ray tomography is hindered by the guard members 16 and 17.

さらに、実施例１の装置には、ガード部材１６，１７を移動エリアと移動エリア外の退避位置との間で移動させるガード部材移動手段が備わっている。   Furthermore, the apparatus according to the first embodiment includes guard member moving means for moving the guard members 16 and 17 between the moving area and the retracted position outside the moving area.

ガード部材１６は、図４（ａ）に示すように、サポートロッド１８への取り付け側と反対側は、中央ライン２２Ａから右と左へ周方向に別れてスライド移動可能な可動ピース１６Ａ，１６Ｂで構成されていて、図４（ｂ）に示すように、可動ピース１６Ａ，１６Ｂを両開き式に引き開けることにより開放することができる。   As shown in FIG. 4A, the guard member 16 has movable pieces 16A and 16B which are slidable separately from the center line 22A in the circumferential direction on the opposite side to the support rod 18 in the circumferential direction. As shown in FIG. 4B, the movable pieces 16A and 16B can be opened by pulling them out in a double-open manner.

ガード部材１７も、図５（ａ）に示すように、サポートロッド１９への取り付け側と反対側は、中央ライン２２Ｂから右と左へ周方向に別れてスライド移動可能な可動ピース１７Ａ，１７Ｂで構成されていて、図５（ｂ）に示すように、可動ピース１７Ａ，１７Ｂを左右に両開き式に引き開けることにより開放することができる。   As shown in FIG. 5 (a), the guard member 17 also has movable pieces 17A and 17B that are slidable separately from the center line 22B in the circumferential direction on the opposite side to the support rod 19 from the center line 22B. As shown in FIG. 5B, the movable pieces 17A and 17B can be opened by pulling them left and right in a double-open manner.

また、図６に示すように、サポートロッド１８は太さの異なる３本のロッド１８Ａ〜１８Ｃを順に繰り出しと引き込みが可能に継いだ継ぎ竿タイプのロッドであり、ロッド１８Ａ〜１８Ｃの繰り出し量に応じて長さが伸び、ロッド１８Ａ〜１８Ｃの引き込み量に応じて長さが縮む。サポートロッド１９も、やはり図６に示すように、太さの異なる３本のロッド１９Ａ〜１９Ｃを順に繰り出しと引き込みが可能に継いだ継ぎ竿タイプのロッドであり、ロッド１９Ａ〜１９Ｃの繰り出し量に応じて長さが伸び、ロッド１９Ａ〜１９Ｃの引き込み量に応じて長さが縮む。   Further, as shown in FIG. 6, the support rod 18 is a joint type rod in which three rods 18A to 18C having different thicknesses are successively connected so as to be extended and retractable. The length increases accordingly, and the length decreases according to the amount of the rods 18A to 18C drawn. As shown in FIG. 6, the support rod 19 is also a joint type rod in which three rods 19 </ b> A to 19 </ b> C having different thicknesses are connected in order so that the rods 19 </ b> A to 19 </ b> C can be drawn out. The length increases accordingly, and the length decreases according to the amount of the rods 19A to 19C drawn.

そして、ガード部材１６を退避位置へ移動させる時は、図４（ｂ）に示すように、ガード部材１６の可動ピース１６Ａ，１６Ｂを右と左に移動させて開放してから、図７に示すように、サポートロッド１８の長さを縮めれば、ガード部材１６はＸ線管２に当たらずに退避位置へ移動する。逆にガード部材１６をＸ線管２の移動エリアへ復帰させる時は、サポートロッド１８の長さを延ばして元の位置へ移動させてから可動ピース１６Ａ，１６Ｂを閉じ合わせる向きに移動させる。   When the guard member 16 is moved to the retracted position, as shown in FIG. 4B, the movable pieces 16A and 16B of the guard member 16 are moved to the right and left to be opened, and then shown in FIG. Thus, if the length of the support rod 18 is shortened, the guard member 16 moves to the retracted position without hitting the X-ray tube 2. Conversely, when the guard member 16 is returned to the moving area of the X-ray tube 2, the length of the support rod 18 is extended and moved to the original position, and then the movable pieces 16A and 16B are moved in the closing direction.

ガード部材１７を退避位置へ移動させる時も、図５（ｂ）に示すように、ガード部材１７の可動ピース１７Ａ，１７Ｂを右と左に移動させて開放してから、図７に示すように、サポートロッド１９の長さを縮めれば、ガード部材１７はＦＰＤ３に当たらずに退避位置へ移動する。逆にガード部材１７をＦＰＤ３の移動エリアへ復帰させる時は、サポートロッド１９の長さを延ばして元の位置へ移動させてから可動ピース１７Ａ，１７Ｂを閉じ合わせる向きに移動させる。   When the guard member 17 is moved to the retracted position, as shown in FIG. 5B, the movable pieces 17A and 17B of the guard member 17 are moved to the right and left to be opened, and then as shown in FIG. If the length of the support rod 19 is shortened, the guard member 17 moves to the retracted position without hitting the FPD 3. Conversely, when returning the guard member 17 to the movement area of the FPD 3, the length of the support rod 19 is extended and moved to the original position, and then the movable pieces 17A and 17B are moved in the closing direction.

したがって、実施例１の装置の場合、ガード部材１６での可動ピース１６Ａ，１６Ｂによる開閉構造とサポートロッド１８のロッド１８Ａ〜１８Ｃによる伸縮構造、および、ガード部材１７での可動ピース１７Ａ，１７Ｂによる開閉構造とサポートロッド１９のロッド１９Ａ〜１９Ｃによる伸縮構造によって、ガード部材移動手段が構成されていることになる。   Therefore, in the case of the apparatus according to the first embodiment, the opening / closing structure of the guard member 16 by the movable pieces 16A, 16B, the expansion / contraction structure of the support rod 18 by the rods 18A-18C, and the opening / closing of the guard member 17 by the movable pieces 17A, 17B. The guard member moving means is configured by the structure and the telescopic structure of the support rod 19 by the rods 19A to 19C.

このように、実施例１の装置では、ガード部材１６やガード部材１７が撮影の障害になる時はガード部材移動手段で障害となるガード部材を移動エリア外の退避位置へ移動することが可能になるので、ガード部材１６，１７がＸ線断層撮影の妨げとなる事態が仮に起こったとしても簡単に解消できる。   As described above, in the apparatus according to the first embodiment, when the guard member 16 or the guard member 17 becomes an obstacle to photographing, the guard member moving means can be moved to the retracted position outside the moving area by the guard member moving unit. Therefore, even if a situation occurs in which the guard members 16 and 17 obstruct X-ray tomography, it can be easily solved.

さらに、実施例１の装置では、ガード部材１６として底の直径が異なるものが予め幾つか付属品として備えられており、ガード部材１７としても底の直径が異なるものが予め幾つか付属品として備えられている。したがって、移動エリアの大きさが変った場合には、ガード部材１６，１７を直径が異なるものに付け替えるとともにサポートロッド１８，１９の長さを適当に調節することによって、移動エリアの大きさの変化に速やかに対処することができる。   Further, in the apparatus of the first embodiment, some guard members 16 having different bottom diameters are provided as accessories in advance, and some guard members 17 having different bottom diameters are provided as accessories in advance. It has been. Therefore, when the size of the moving area changes, the size of the moving area is changed by replacing the guard members 16 and 17 with different diameters and appropriately adjusting the lengths of the support rods 18 and 19. Can be dealt with promptly.

続いて、この発明の実施例２を図面を参照して説明する。図８は実施例２に係るＣ型アーム駆動式Ｘ線断層撮影装置の全体的な構成を示すブロック図である。
実施例２の断層撮影装置は、Ｘ線管２とＦＰＤ３の移動形態は、Ｘ線管２およびＦＰＤ３の対向配置を維持した状態で被検体Ｍの周りを１周（あるいは少なくとも半周以上）にわたって周回的に連動して移動し、これに応じてＸ線管２とＦＰＤ３の移動エリアを覆うガード部材まわりの構成が異なる他は、実施例１の装置と同一のものであるので、実施例１の装置と相違する点のみを説明し、実施例１の装置と共通する点の説明は省略する。 Next, Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 8 is a block diagram illustrating the overall configuration of a C-arm drive type X-ray tomography apparatus according to the second embodiment.
In the tomography apparatus according to the second embodiment, the movement form of the X-ray tube 2 and the FPD 3 circulates around the subject M over one turn (or at least a half turn or more) while maintaining the opposed arrangement of the X-ray tube 2 and the FPD 3. Since the configuration around the guard member that covers the moving area of the X-ray tube 2 and the FPD 3 is different according to this, it is the same as the apparatus of the first embodiment. Only differences from the apparatus will be described, and description of points that are common to the apparatus of the first embodiment will be omitted.

実施例２の装置では、アーム駆動機構４が行うＣ型アーム１の駆動に伴って、図９に示すように、Ｘ線管２およびＦＰＤ３が被検体Ｍの周りを完全に１回転（あるいは少なくとも半回転）する周回的な移動を行ってＸ線管２のＸ線照射方向を変化させる。このように、実施例２の装置の場合、Ｘ線管２およびＦＰＤ３が被検体Ｍの周りを周回的に移動することにより、再構成処理部８は周回方向で形成された平面と同一断面の被検体ＭのＸ線断層画像（Ｘ線ＣＴ画像）を取得できる。   In the apparatus of the second embodiment, as the C-type arm 1 is driven by the arm driving mechanism 4, the X-ray tube 2 and the FPD 3 are completely rotated around the subject M (or at least as shown in FIG. 9). The X-ray irradiation direction of the X-ray tube 2 is changed by performing a circular movement that is half-rotated. As described above, in the case of the apparatus according to the second embodiment, the X-ray tube 2 and the FPD 3 move around the subject M so that the reconstruction processing unit 8 has the same cross-section as the plane formed in the rotation direction. An X-ray tomographic image (X-ray CT image) of the subject M can be acquired.

さらに、実施例２の断層撮影装置は、図８〜図１０に示すように、Ｘ線管２およびＦＰＤ３の円筒リング状の移動エリアを局所的に覆う左右一対のガード部材２３，２４がサポートロッド２５，２６で支えられた状態で配設されていて、各ガード部材２３，２４よりも内側をＸ線管２およびＦＰＤ３が移動する構成を特徴としている。Ｘ線断層撮影の際、Ｘ線管２およびＦＰＤ３はガード部材２３，２４よりも内側をガード部材２３，２４に当たることなく速やかに移動するので、Ｘ線管２およびＦＰＤ３の移動がガード部材２３，２４で妨げられることはない。なお、サポートロッド２５，２６は柱状支持部材６に取り付けられている。   Further, as shown in FIGS. 8 to 10, the tomographic apparatus according to the second embodiment includes a pair of left and right guard members 23 and 24 that locally cover the cylindrical ring-shaped moving area of the X-ray tube 2 and the FPD 3. The X-ray tube 2 and the FPD 3 are arranged inside the guard members 23 and 24 and are supported in a state where the X-ray tube 2 and the FPD 3 are moved. During X-ray tomography, the X-ray tube 2 and the FPD 3 move quickly inside the guard members 23, 24 without hitting the guard members 23, 24. 24 is not disturbed. The support rods 25 and 26 are attached to the columnar support member 6.

そして、実施例２の装置の場合も、Ｘ線管２およびＦＰＤ３の移動エリアを覆って配設されているガード部材２３，２４が目安になって、Ｘ線管２およびＦＰＤ３の移動エリアが一目で正確に把握できるので、Ｘ線管２やＦＰＤ３の移動エリアに他の医療用の装置や器具などが入り込んでセットしてしまったり、手術中に医師やオペレータの体の一部がＸ線管２やＦＰＤ３の移動エリアに不用意に入り込んだりする事態が回避され、Ｘ線管２およびＦＰＤ３の移動エリアに障害物が入り込まないようになる。   Also in the case of the apparatus according to the second embodiment, the guard members 23 and 24 arranged so as to cover the moving area of the X-ray tube 2 and the FPD 3 are used as a guide, and the moving area of the X-ray tube 2 and the FPD 3 is at a glance. So that other medical devices or instruments can enter and set in the moving area of the X-ray tube 2 or FPD3, or a part of the body of the doctor or operator can be placed during the operation. 2 or the movement area of the FPD 3 is avoided, and the obstacle does not enter the movement area of the X-ray tube 2 and the FPD 3.

よって、実施例２のＣ型アーム駆動式Ｘ線断層撮影装置によれば、Ｘ線管２やＦＰＤ３の移動エリアに障害物が入り込むことを容易に回避することができる。また、ガード部材２３，２４によってＸ線管２およびＦＰＤ３の円筒リング状の移動エリアだけが局所的に覆われているので、Ｘ線管２とＦＰＤ３の移動エリアだけを限定的に覆った状態でガード部材２３，２４が配設できる。   Therefore, according to the C-arm drive type X-ray tomography apparatus of Example 2, it is possible to easily avoid an obstacle from entering the moving area of the X-ray tube 2 or the FPD 3. Further, since only the cylindrical ring-shaped moving area of the X-ray tube 2 and the FPD 3 is locally covered by the guard members 23 and 24, only the moving area of the X-ray tube 2 and the FPD 3 is limitedly covered. Guard members 23 and 24 can be provided.

また、実施例２の装置にも、ガード部材２３，２４を移動エリアと移動エリア外の退避位置との間で移動させるガード部材移動手段が備わっている。   Further, the apparatus according to the second embodiment also includes guard member moving means for moving the guard members 23 and 24 between the moving area and the retracted position outside the moving area.

図８および図９に示すように、上下の２個所はガード部材２３，２４がなく、Ｘ線管２およびＦＰＤ３がガード部材２３，２４の外に位置する構成となっている。また、図１０および図１１に示すように、各ガード部材２３，２４が取り付けられている各サポートロッド２５，２６は、ガード部材２３，２４ごと背面側へ移動可能な構成となっている。   As shown in FIGS. 8 and 9, the upper and lower portions are not provided with the guard members 23 and 24, and the X-ray tube 2 and the FPD 3 are positioned outside the guard members 23 and 24. Further, as shown in FIGS. 10 and 11, the support rods 25 and 26 to which the guard members 23 and 24 are attached are configured to be movable to the back side together with the guard members 23 and 24.

そして、ガード部材２３を退避位置へ移動させる時は、図９に示すように、Ｘ線管２およびＦＰＤ３をガード部材２３，２４が途切れる上と下に位置させておいてから、サポートロッド２５をガード部材２３ごと背面側ヘ移動させれば、ガード部材２３はＸ線管２にもＦＰＤ３にも当たらずに退避位置へ移動する。逆にガード部材２３を移動エリアへ復帰させる時は、Ｘ線管２およびＦＰＤ３をガード部材２３，２４が途切れる上と下に位置させておいてから、サポートロッド２５をガード部材２３ごと前面側へ移動させれば、ガード部材２３はＸ線管２にもＦＰＤ３にも当たらずに移動エリアへ戻る。   When the guard member 23 is moved to the retracted position, as shown in FIG. 9, the X-ray tube 2 and the FPD 3 are positioned above and below where the guard members 23 and 24 are interrupted, and then the support rod 25 is moved to the guard member. When the entire 23 is moved to the back side, the guard member 23 moves to the retracted position without hitting the X-ray tube 2 or the FPD 3. Conversely, when returning the guard member 23 to the moving area, the X-ray tube 2 and the FPD 3 are positioned above and below where the guard members 23 and 24 are interrupted, and then the support rod 25 is moved together with the guard member 23 to the front side. Then, the guard member 23 returns to the moving area without hitting the X-ray tube 2 or the FPD 3.

もう一方のガード部材２４を退避位置へ移動させる時は、図９に示すように、やはりＸ線管２およびＦＰＤ３をガード部材２３，２４が途切れる上と下に位置させておいてから、サポートロッド２６をガード部材２４ごと背面側へ移動させれば、ガード部材２４はＸ線管２にもＦＰＤ３にも当たらずに退避位置へ移動する。逆にガード部材２４を移動エリアへ復帰させる時は、やはりＸ線管２およびＦＰＤ３をガード部材２３，２４が途切れる上と下に位置させておいてから、サポートロッド２６をガード部材２４ごと前面側へ移動させれば、ガード部材２４はＸ線管２にもＦＰＤ３にも当たらずに移動エリアへ戻る。   When the other guard member 24 is moved to the retracted position, as shown in FIG. 9, the X-ray tube 2 and the FPD 3 are also positioned above and below where the guard members 23 and 24 are interrupted, and then the support rod 26 is moved. If the guard member 24 is moved to the back side, the guard member 24 moves to the retracted position without hitting the X-ray tube 2 or the FPD 3. Conversely, when returning the guard member 24 to the moving area, the X-ray tube 2 and the FPD 3 are also positioned above and below where the guard members 23 and 24 are interrupted, and then the support rod 26 is moved together with the guard member 24 to the front side. Then, the guard member 24 returns to the moving area without hitting the X-ray tube 2 or the FPD 3.

したがって、実施例２の装置では、Ｘ線管２およびＦＰＤ３をガード部材２３，２４が途切れる上と下に位置できる構造、および、サポートロッド２５，２６をガード部材２３，２４ごと背面・前面側へ移動できる構造によって、ガード部材移動手段が構成されていることになる。   Therefore, in the apparatus of the second embodiment, the X-ray tube 2 and the FPD 3 can be positioned above and below the guard members 23 and 24 and the support rods 25 and 26 can be moved to the back and front sides together with the guard members 23 and 24. The guard member moving means is constituted by the structure.

このように、実施例２の装置の場合、ガード部材２３，２４が撮影の障害になる時はガード部材移動手段で障害となるガード部材を移動エリア外の退避位置へ移動することが可能になるので、ガード部材２３，２４がＸ線断層撮影の妨げとなる事態が仮に起こっても、簡単に解消できる。   As described above, in the case of the apparatus according to the second embodiment, when the guard members 23 and 24 become an obstacle to photographing, the guard member moving means can be moved to the retracted position outside the moving area by the guard member moving means. Therefore, even if the guard members 23 and 24 interfere with X-ray tomography, it can be easily solved.

なお、実施例２の装置の場合は、ガード部材２３，２４は着脱可能な構成とはなっていないが、ガード部材２３，２４が実施例１の装置のように着脱可能な構成となっていてもよい。   In the case of the apparatus of the second embodiment, the guard members 23 and 24 are not configured to be detachable, but the guard members 23 and 24 are configured to be detachable as in the apparatus of the first embodiment. Also good.

この発明は、上記の実施例に限られるものではなく、以下のように変形実施することも可能である。   The present invention is not limited to the above embodiment, and can be modified as follows.

（１）実施例１，２の装置において、ＦＰＤ３の代わりにイメージシインテンファイアを用いた他は同一の構成の装置が、変形例として挙げられる。   (1) In the apparatus of the first and second embodiments, an apparatus having the same configuration except that an image intensifier is used instead of the FPD 3 can be given as a modification.

（２）実施例１の装置において、図１２および図１３に示すように、ガード部材２７がＸ線管２の移動エリアとＦＰＤ３の移動エリアの両方をまとめて覆うように配設されている他は実施例１と同一の構成の装置が、変形例として挙げられる。この変形例では、Ｘ線管２の移動エリアとＦＰＤ３の移動エリアの両方を全体的に覆ってガード部材２７を配設することができる。   (2) In the apparatus of Example 1, as shown in FIGS. 12 and 13, the guard member 27 is disposed so as to cover both the moving area of the X-ray tube 2 and the moving area of the FPD 3 together. An apparatus having the same configuration as that of the first embodiment is exemplified as a modification. In this modification, the guard member 27 can be disposed so as to cover both the moving area of the X-ray tube 2 and the moving area of the FPD 3 as a whole.

（３）実施例１の装置において、各ガード部材１６，１７自体を、傘を開閉するのと同じ方式で径方向に開閉させて直径を変化できるような構造とし、Ｘ線管２やＦＰＤ３の移動エリアの大きさに合わせてガード部材１６，１７の直径を調整し、移動エリアの大きさの変化に対応するようにした他は実施例１と同一の構成の装置が、変形例として挙げられる。   (3) In the apparatus of the first embodiment, each guard member 16, 17 itself has a structure in which the diameter can be changed by opening and closing in the radial direction in the same manner as opening and closing the umbrella, and the X-ray tube 2 and FPD 3 An apparatus having the same configuration as that of the first embodiment except that the diameters of the guard members 16 and 17 are adjusted in accordance with the size of the moving area to cope with the change in the size of the moving area can be given as a modification. .

（４）実施例２の装置において、アーム駆動機構４が行うＣ型アーム１の駆動に伴って、Ｘ線管２およびＦＰＤ３が周回的な移動だけでなく、被検体Ｍの周りを半回転未満だけという非周回的な移動も行え、Ｘ線断層画像を取得できることも可能とした他は実施例２と同一の構成の装置が、変形例として挙げられる。   (4) In the apparatus according to the second embodiment, the X-ray tube 2 and the FPD 3 are moved not only around the subject M but also less than a half rotation as the C-type arm 1 is driven by the arm driving mechanism 4. An apparatus having the same configuration as that of the second embodiment can be given as a modified example except that non-circular movement can be performed and an X-ray tomographic image can be acquired.

（５）実施例２の装置において、図１４に示すように、Ｘ線管２およびＦＰＤ３の移動エリアを全て覆ったガード部材２３や、図１５に示すように、上下一対のガード部材２３，２４を備えた他は実施例２と同一の構成の装置が、変形例として挙げられる。図１４に示す装置の場合には周回移動のときに有効であり、図１５に示す装置の場合には非周回やガード部分のみを周回あるいは才差運動のときに有効である。   (5) In the apparatus of the second embodiment, as shown in FIG. 14, a guard member 23 that covers the entire moving area of the X-ray tube 2 and the FPD 3, or a pair of upper and lower guard members 23, 24 as shown in FIG. An apparatus having the same configuration as that of the second embodiment except for the above is given as a modification. In the case of the device shown in FIG. 14, it is effective at the time of circular movement. In the case of the device shown in FIG.

（６）実施例２の装置において、各ガード部材２３，２４の代わりに各ガード部材２３，２４を長手方向に沿って半割りにした外側部分だけのものを用いる他は実施例２と同一の構成の装置も、変形例として挙げられる。   (6) The apparatus of the second embodiment is the same as the second embodiment except that instead of the guard members 23 and 24, only the outer portion obtained by dividing the guard members 23 and 24 in the longitudinal direction is used. An apparatus having a configuration is also given as a modification.

（７）実施例１，２の装置では、Ｃ型アーム１が移動式台車５の移動に伴って動く構成であったが、この発明は、天井走行式あるいは据え置き式のＣ型アームにも適用できる。   (7) In the apparatus of the first and second embodiments, the C-type arm 1 is configured to move as the movable carriage 5 moves. However, the present invention is also applicable to an overhead traveling type or a stationary type C-type arm. it can.

（８）実施例１，２の装置では、Ｃ型アームが用いられていたが、この発明は、Ｃ型以外の形状のアームを用いる装置にも適用できる。   (8) Although the C-type arm is used in the apparatuses of Examples 1 and 2, the present invention can also be applied to an apparatus using an arm having a shape other than the C-type.

（９）実施例１，２の装置は医用であったが、この発明は、医用に限らず、工業用や原子力用の装置にも適用できる。   (9) Although the apparatus of Examples 1 and 2 was for medical use, the present invention is not limited to medical use but can be applied to industrial and nuclear equipment.

（１０）実施例１，２の装置は放射線としてＸ線を用いる構成であったが、この発明はＸ線以外の放射線を用いる装置にも適用できる。   (10) Although the apparatus of Examples 1 and 2 is configured to use X-rays as radiation, the present invention can also be applied to apparatuses using radiation other than X-rays.

（１１）非周回的に移動するＸ線管２およびＦＰＤ３の移動エリアを覆った実施例１の装置と、周回的に移動するＸ線管２およびＦＰＤ３の移動エリアを覆った実施例２の装置とを組み合わせた装置が変形例として挙げられる。   (11) The apparatus of the first embodiment that covers the moving area of the X-ray tube 2 and the FPD 3 that moves non-circularly, and the apparatus of the second embodiment that covers the moving area of the X-ray tube 2 and FPD 3 that move circularly. An example of a modified device is a combination of the above.

実施例１のＣ型アーム駆動式Ｘ線断層撮影装置の構成を示すブロック図である。1 is a block diagram illustrating a configuration of a C-arm drive type X-ray tomography apparatus according to Embodiment 1. FIG. 実施例１の装置におけるＸ線管とＦＰＤの移動状況を示す立面図である。It is an elevational view showing the movement status of the X-ray tube and FPD in the apparatus of the first embodiment. 実施例１の装置におけるＸ線管とＦＰＤの移動状況を示す平面図である。It is a top view which shows the movement state of the X-ray tube and FPD in the apparatus of Example 1. FIG. （ａ）、（ｂ）は、実施例１の装置のＸ線管の移動エリアを覆うガード部材を示す斜視図である。(A), (b) is a perspective view which shows the guard member which covers the movement area of the X-ray tube of the apparatus of Example 1. FIG. （ａ）、（ｂ）は、実施例１の装置のＦＰＤの移動エリアを覆うガード部材を示す斜視図である。(A), (b) is a perspective view which shows the guard member which covers the movement area of FPD of the apparatus of Example 1. FIG. 実施例１の装置においてガード部材が未退避である状態を示す立面図である。It is an elevation view which shows the state which the guard member has not evacuated in the apparatus of Example 1. FIG. 実施例１の装置でガード部材が退避位置に移動した時の状態を示す立面図である。It is an elevation view which shows a state when a guard member moves to a retracted position with the apparatus of Example 1. 実施例２のＣ型アーム駆動式Ｘ線断層撮影装置の構成を示すブロック図である。6 is a block diagram illustrating a configuration of a C-arm drive type X-ray tomography apparatus according to Embodiment 2. FIG. 実施例２のＸ線断層撮影装置のＣ型アームまわりの構成を示す正面図である。6 is a front view showing a configuration around a C-shaped arm of the X-ray tomography apparatus according to Embodiment 2. FIG. 実施例２のＸ線断層撮影装置のＣ型アームまわりの構成を示す平面図である。6 is a plan view showing a configuration around a C-shaped arm of the X-ray tomography apparatus according to Embodiment 2. FIG. 実施例２の装置でガード部材が退避位置に移動した時の状態を示す平面図である。It is a top view which shows a state when a guard member moves to a retracted position with the apparatus of Example 2. 実施例１の変形例に係る装置のＣ型アームまわりの構成を示す立面図である。FIG. 6 is an elevational view showing a configuration around a C-shaped arm of the apparatus according to a modification of the first embodiment. 実施例１の変形例に係る装置のＣ型アームまわりの構成を示す正面図である。FIG. 6 is a front view showing a configuration around a C-shaped arm of an apparatus according to a modification of the first embodiment. 実施例２の変形例に係る装置のＣ型アームまわりの構成を示す正面図である。FIG. 10 is a front view illustrating a configuration around a C-shaped arm of an apparatus according to a modification of the second embodiment. 実施例２の変形例に係る装置のＣ型アームまわりの構成を示す正面図である。FIG. 10 is a front view illustrating a configuration around a C-shaped arm of an apparatus according to a modification of the second embodiment. 従来の装置のＣ型アームまわりの構成を示す立面図である。It is an elevation view showing a configuration around a C-shaped arm of a conventional device. 従来の装置のＣ型アームまわりの構成を示す正面図である。It is a front view which shows the structure around the C-type arm of the conventional apparatus.

符号の説明Explanation of symbols

１ … Ｃ型アーム
２ … Ｘ線管（放射線照射手段）
３ … ＦＰＤ（面状放射線検出手段）
４ … アーム駆動機構（アーム駆動手段）
１６，１７ … ガード部材
２３，２４ … ガード部材
２７ … ガード部材
Ｍ … 被検体
DESCRIPTION OF SYMBOLS 1 ... C-type arm 2 ... X-ray tube (radiation irradiation means)
3 ... FPD (planar radiation detection means)
4 ... Arm drive mechanism (arm drive means)
16, 17 ... Guard member 23, 24 ... Guard member 27 ... Guard member M ... Subject

Claims (5)

アームの一端と他端に対向配置されている放射線照射手段および面状放射線検出手段と、放射線照射手段と面状放射線検出手段との対向配置を維持した状態で撮影対象の被検体に対する放射線照射方向を変える移動を行うためにアームを駆動するアーム駆動手段とを備え、アーム駆動手段が行うアームの駆動による移動に応じて放射線照射方向が変化した放射線照射手段の放射線照射に伴って面状放射線検出手段から出力される放射線検出信号に基づいて被検体の放射線断層画像を取得するアーム駆動式放射線断層撮影装置において、アーム駆動手段によるアームの駆動に伴って移動する放射線照射手段と面状放射線検出手段の移動エリアを覆うガード部材が配設されていて、このガード部材よりも内側を放射線照射手段および面状放射線検出手段が移動することを特徴とするアーム駆動式放射線断層撮影装置。   Radiation irradiation direction with respect to the subject to be imaged in a state where the radiation irradiation means and the planar radiation detection means opposed to one end and the other end of the arm and the opposed arrangement of the radiation irradiation means and the planar radiation detection means are maintained. Arm driving means for driving the arm to perform movement to change the surface radiation, and detection of planar radiation accompanying radiation irradiation of the radiation irradiating means whose radiation irradiation direction has changed according to the movement of the arm driving means driven by the arm In an arm-driven radiation tomography apparatus that acquires a radiation tomographic image of a subject based on a radiation detection signal output from the means, a radiation irradiating means and a planar radiation detecting means that move as the arm is driven by the arm driving means A guard member is disposed to cover the moving area, and the radiation irradiation means and the planar radiation detector are disposed inside the guard member. Arm driven radiation tomography apparatus characterized by means to move. 請求項１に記載のアーム駆動式放射線断層撮影装置において、ガード部材は着脱可能に配設されているアーム駆動式放射線断層撮影装置。   2. The arm-driven radiation tomography apparatus according to claim 1, wherein the guard member is detachably disposed. 請求項１または２に記載のアーム駆動式放射線断層撮影装置において、ガード部材を移動エリアと移動エリア外の退避位置との間で移動させるガード部材移動手段を備えているアーム駆動式放射線断層撮影装置。   3. The arm-driven radiation tomography apparatus according to claim 1, further comprising guard member moving means for moving the guard member between a moving area and a retracted position outside the moving area. . 請求項１から３のいずれかに記載のアーム駆動式放射線断層撮影装置において、アーム駆動手段によるアームの駆動により放射線照射手段および面状放射線検出手段が被検体の周りを非周回的に移動するとともに、ガード部材によって放射線照射手段や面状放射線検出手段の移動エリアが全体的に覆われているアーム駆動式放射線断層撮影装置。   4. The arm-driven radiation tomography apparatus according to claim 1, wherein the radiation irradiating means and the planar radiation detecting means are moved around the subject non-circularly by driving the arm by the arm driving means. An arm-driven radiation tomography apparatus in which the moving area of the radiation irradiation means and the planar radiation detection means is entirely covered by the guard member. 請求項１から４のいずれかに記載のアーム駆動式放射線断層撮影装置において、アーム駆動手段によるアームの駆動により放射線照射手段および面状放射線検出手段が被検体の周りを周回的に移動するとともに、ガード部材によって放射線照射手段や面状放射線検出手段の移動エリアが局所的あるいは全体的に覆われているアーム駆動式放射線断層撮影装置。
The arm-driven radiation tomography apparatus according to any one of claims 1 to 4, wherein the radiation irradiating means and the planar radiation detecting means are moved around the subject by the arm driving by the arm driving means, An arm-driven radiation tomography apparatus in which a moving area of radiation irradiation means or planar radiation detection means is locally or entirely covered by a guard member.
JP2003420428A 2003-12-18 2003-12-18 Arm-driving type radiation tomographic apparatus Withdrawn JP2005177047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003420428A JP2005177047A (en) 2003-12-18 2003-12-18 Arm-driving type radiation tomographic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003420428A JP2005177047A (en) 2003-12-18 2003-12-18 Arm-driving type radiation tomographic apparatus

Publications (1)

Publication Number Publication Date
JP2005177047A true JP2005177047A (en) 2005-07-07

Family

ID=34781955

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003420428A Withdrawn JP2005177047A (en) 2003-12-18 2003-12-18 Arm-driving type radiation tomographic apparatus

Country Status (1)

Country Link
JP (1) JP2005177047A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006271970A (en) * 2005-03-29 2006-10-12 Siemens Ag Photographing device for projection image
EP2084713A2 (en) * 2006-11-11 2009-08-05 Amir Belson Fluoroscopy operator protection device
WO2012020467A1 (en) * 2010-08-09 2012-02-16 株式会社吉田製作所 X-ray photographing device
CN101272736B (en) * 2005-09-27 2012-06-20 皇家飞利浦电子股份有限公司 Containment tubes and imaging systems employing same
JP2015521877A (en) * 2012-06-29 2015-08-03 ゼネラル・エレクトリック・カンパニイ Medical imaging system including C-arm protective tunnel
JP2015525598A (en) * 2012-06-29 2015-09-07 ゼネラル・エレクトリック・カンパニイ Medical imaging system with C-arm and protective cover supported by two different vehicles
EP3993705A4 (en) * 2019-07-02 2023-07-19 Radiaction Ltd. Deployable radiation shield cover
US11937957B2 (en) 2015-11-09 2024-03-26 Radiaction Ltd. Radiation shielding apparatuses and applications thereof
US12011306B2 (en) 2019-01-02 2024-06-18 Radiaction Ltd Patient head protection device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006271970A (en) * 2005-03-29 2006-10-12 Siemens Ag Photographing device for projection image
CN101272736B (en) * 2005-09-27 2012-06-20 皇家飞利浦电子股份有限公司 Containment tubes and imaging systems employing same
US9370331B2 (en) 2006-11-11 2016-06-21 Radiaction Ltd. Fluoroscopy operator protection device
EP2084713A4 (en) * 2006-11-11 2013-03-20 Radguard Medical Inc Fluoroscopy operator protection device
EP2084713A2 (en) * 2006-11-11 2009-08-05 Amir Belson Fluoroscopy operator protection device
US9907519B2 (en) 2006-11-11 2018-03-06 Radiaction Ltd. Fluoroscopy operator protection device
WO2012020467A1 (en) * 2010-08-09 2012-02-16 株式会社吉田製作所 X-ray photographing device
JP5395958B2 (en) * 2010-08-09 2014-01-22 株式会社吉田製作所 X-ray equipment
US8979366B2 (en) 2010-08-09 2015-03-17 The Yoshida Dental Mfg. Co., Ltd. X-ray photographing device
JP2015521877A (en) * 2012-06-29 2015-08-03 ゼネラル・エレクトリック・カンパニイ Medical imaging system including C-arm protective tunnel
JP2015525598A (en) * 2012-06-29 2015-09-07 ゼネラル・エレクトリック・カンパニイ Medical imaging system with C-arm and protective cover supported by two different vehicles
US9649077B2 (en) 2012-06-29 2017-05-16 General Electric Company Medical imaging system with C-arm and protection cover supported by two different vehicles
US11937957B2 (en) 2015-11-09 2024-03-26 Radiaction Ltd. Radiation shielding apparatuses and applications thereof
US12011306B2 (en) 2019-01-02 2024-06-18 Radiaction Ltd Patient head protection device
EP3993705A4 (en) * 2019-07-02 2023-07-19 Radiaction Ltd. Deployable radiation shield cover

Similar Documents

Publication Publication Date Title
US7012990B2 (en) X-ray radiographic apparatus, X-ray restrictor, and X-ray radiographic method
JP6157818B2 (en) X-ray diagnostic equipment
EP3342349B1 (en) Robotic operating table and hybrid operating system
JP2006239126A (en) X-ray diagnostic apparatus
JP4508326B2 (en) X-ray fluoroscopic equipment
JP2005177047A (en) Arm-driving type radiation tomographic apparatus
JP2007190132A (en) X-ray inspection apparatus
JP4960212B2 (en) X-ray diaphragm apparatus and X-ray imaging apparatus
JP2002159479A (en) X-ray diagnostic apparatus
JP2002263094A (en) Fluororoentgenograph
JP6540399B2 (en) Radioscopic imaging apparatus
JP5541242B2 (en) X-ray equipment
JP4701015B2 (en) X-ray CT system
JP4737793B2 (en) X-ray diagnostic equipment
JP6183183B2 (en) X-ray fluoroscope
JPH08336520A (en) X-ray ct system
JP2021029742A (en) X-ray image diagnostic apparatus
JP2009060953A (en) X-ray diagnostic system
JP2013017569A (en) X-ray equipment
JP4489086B2 (en) X-ray diagnostic equipment
JP4490982B2 (en) X-ray diagnostic equipment
JP6923287B2 (en) X-ray fluoroscopy equipment
JP6681256B2 (en) X-ray CT system
JP2004216193A (en) Two-way x-ray fluorography equipment
JP2007136103A (en) Medical roentgenography system

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060301

A761 Written withdrawal of application

Free format text: JAPANESE INTERMEDIATE CODE: A761

Effective date: 20060829