WO2011089686A1 - X-ray imaging device - Google Patents

X-ray imaging device Download PDF

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Publication number
WO2011089686A1
WO2011089686A1 PCT/JP2010/050546 JP2010050546W WO2011089686A1 WO 2011089686 A1 WO2011089686 A1 WO 2011089686A1 JP 2010050546 W JP2010050546 W JP 2010050546W WO 2011089686 A1 WO2011089686 A1 WO 2011089686A1
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Prior art keywords
ray
subject
irradiation field
rotating plate
light
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PCT/JP2010/050546
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French (fr)
Japanese (ja)
Inventor
登 山下
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株式会社島津製作所
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Priority to PCT/JP2010/050546 priority Critical patent/WO2011089686A1/en
Publication of WO2011089686A1 publication Critical patent/WO2011089686A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4035—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis the source being combined with a filter or grating

Definitions

  • the present invention relates to an X-ray tube that irradiates a subject with X-rays, an X-ray detector such as a flat panel detector that detects X-rays emitted from the X-ray tube and passed through the subject, and an X-ray TECHNICAL FIELD
  • the present invention relates to an X-ray imaging apparatus including a collimator mechanism that is disposed between a tube and a subject and adjusts an X-ray irradiation field that is irradiated from the X-ray tube toward the subject, and an additional filter such as a soft ray removal filter. .
  • the X-ray tube used in such an X-ray imaging apparatus irradiates X-rays containing X-ray components having a wide range of energy from low energy soft rays to high energy hard rays.
  • low energy soft wires and high energy hard wires have the characteristics shown in Table 1 below.
  • the soft line since the soft line has a low penetrating power, the X-ray energy is consumed in the body of the patient as the subject, and the absorbed dose (exposure dose) increases. For this reason, in order to remove unnecessary soft lines, photographing may be performed by attaching an additional filter such as a soft line removal filter made of an aluminum thin plate or a copper thin plate inside the collimator mechanism or the like. In this case, if the thickness of the additional filter is increased, more soft lines are removed.
  • an additional filter such as a soft line removal filter made of an aluminum thin plate or a copper thin plate
  • Patent Documents 1 to 3 X-ray imaging apparatuses that selectively use a plurality of types of additional filters have also been proposed (see Patent Documents 1 to 3).
  • a plurality of types of additional filters are mounted in advance in the apparatus such as the collimator mechanism, and these additional filters are moved by the moving mechanism of the additional filter.
  • An additional filter corresponding to the shooting conditions is selectively used.
  • the additional filter currently set from the outside is used. It cannot be confirmed visually. For this reason, in the conventional X-ray imaging apparatus, generally, the type of the additional filter currently set is displayed on the display unit with characters or lamps.
  • a collimator mechanism is used to adjust the X-ray irradiation field irradiated from the X-ray tube toward the patient as the subject.
  • a light irradiation field is formed by turning on a light source disposed on the side opposite to the patient with respect to the collimator mechanism, and the X-ray irradiation field adjusted by the collimator mechanism is visually recognized by this light irradiation field. ing.
  • the operator of the X-ray imaging apparatus sets the X-ray irradiation range while watching the patient, and may overlook the type of additional filter displayed on the display unit.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an X-ray imaging apparatus capable of easily and reliably recognizing the type of additional filter selected by the operator.
  • the invention according to claim 1 is an X-ray tube that irradiates a subject with X-rays, an X-ray detection unit that detects X-rays emitted from the X-ray tube and passed through the subject, and the X-rays
  • An X-ray imaging apparatus comprising: a collimator mechanism that is disposed between the X-ray tube and the subject and adjusts an X-ray irradiation field irradiated from the X-ray tube toward the subject.
  • Light irradiation field forming means for forming a light irradiation field for visually recognizing the X-ray irradiation field adjusted by the mechanism, an X-ray irradiation area from the X-ray tube to the subject, and from the X-ray irradiation area Light for changing the light state of the light field by the light field forming means according to the movement state of the additional filter by the additional filter moving means and the additional filter moving means for moving the additional filter between the separated regions With irradiation field changing means And wherein the door.
  • the light irradiation field changing means is a light color of the light irradiation field by the light irradiation field forming means, and the light irradiated to the light irradiation field. Or the blinking state of the light applied to the light irradiation field is changed.
  • the additional filter moving means selectively selects a plurality of types of additional filters in an X-ray irradiation region from the X-ray tube to the subject. Move to.
  • the additional filter moving means includes a rotating plate on which the plurality of types of additional filters are disposed, and a motor that rotates the rotating plate. By rotating the rotating plate, one of a plurality of additional filters arranged on the rotating plate is selectively moved to an X-ray irradiation region from the X-ray tube to the subject.
  • the light irradiation field changing means is disposed between a light source, the light source and the subject, and has different colors.
  • a color filter moving unit that selectively moves a plurality of color filters formed of a plate in an optical path from the light source to the subject.
  • the light irradiation field changing means is a second rotation in which a plurality of color filters composed of translucent plates having different colors are arranged.
  • a plate and a motor for rotating the second rotating plate, and rotating the second rotating plate to change one of a plurality of color filters disposed on the second rotating plate to the light source To the optical path from the subject to the subject.
  • the invention described in claim 7 is the light transmitting device according to claim 3, wherein the light irradiation field changing means is disposed between the light source, the light source and the subject, and has different patterns.
  • Pattern filter moving means for selectively moving a plurality of pattern filters composed of a plate in an optical path from the light source to the subject;
  • the invention according to claim 8 is the second rotation according to claim 7, wherein the light irradiation field changing means is provided with a plurality of pattern filters composed of translucent plates having different patterns.
  • the invention according to claim 9 is an X-ray tube that irradiates a subject with X-rays, an X-ray detection unit that detects X-rays irradiated from the X-ray tube and passed through the subject, and the X-rays
  • An X-ray imaging apparatus comprising: a collimator mechanism that is disposed between the X-ray tube and the subject and adjusts an X-ray irradiation field irradiated from the X-ray tube toward the subject.
  • an additional filter moving means for selectively moving an X-ray to an X-ray irradiation region from the X-ray tube to the subject, and a plurality of color filters composed of translucent plates having different colors
  • a second rotating plate and a motor for rotating the second rotating plate ; And forming a light irradiation field for visually recognizing the X-ray irradiation field adjusted by the collimator mechanism, and rotating the second rotation plate, thereby arranging a plurality of light irradiation fields disposed on the second rotation plate.
  • a light irradiation field forming means for selectively moving one of the color filters in an optical path from the light source to the subject, and rotating the rotating plate and the second rotating plate in association with each other.
  • the invention according to claim 10 is an X-ray tube that irradiates a subject with X-rays, an X-ray detector that detects X-rays that have been irradiated from the X-ray tube and passed through the subject, and the X-rays
  • An X-ray imaging apparatus comprising: a collimator mechanism that is disposed between the X-ray tube and the subject and adjusts an X-ray irradiation field irradiated from the X-ray tube toward the subject.
  • an additional filter moving means for selectively moving an X-ray to an X-ray irradiation region from the X-ray tube to the subject, and a plurality of pattern filters composed of translucent plates having different patterns
  • a second rotating plate and the second rotating plate A rotating motor, and forming a light irradiation field for visually recognizing the X-ray irradiation field adjusted by the collimator mechanism, and rotating the second rotating plate to dispose the second rotating plate.
  • a light irradiation field forming means for selectively moving one of the plurality of patterned filters in an optical path from the light source to the subject, and the rotating plate and the second rotating plate. By rotating in association, the light pattern of the light field formed by the light field forming unit is changed according to the arrangement state of the additional filter with respect to the X-ray irradiation region by the additional filter moving unit. It is characterized by.
  • the type of the additional filter selected based on the light state of the light irradiation field is selected. It becomes possible to recognize. Therefore, the type of the selected additional filter can be easily and reliably recognized, and it is possible to prevent the X-ray imaging from being performed using the wrong additional filter.
  • the additional filter moving means selects one of the plural types of additional filters and easily moves it to the X-ray irradiation region from the X-ray tube to the subject. Is possible.
  • one of a plurality of types of additional filters arranged on the rotating plate reaches the subject from the X-ray tube. It is possible to selectively move to the X-ray irradiation area.
  • the fifth aspect of the present invention by selectively moving a plurality of color filters composed of translucent plates having different colors from each other in the optical path from the light source to the subject, It is possible to easily change the color of light in accordance with the type of the additional filter selected.
  • one of the plurality of color filters arranged on the second rotating plate is changed from the light source to the subject. It is possible to move selectively in the optical path to reach.
  • the seventh aspect of the present invention by selectively moving a plurality of pattern filters composed of translucent plates having different patterns from each other in the optical path from the light source to the subject,
  • the light pattern can be easily changed according to the type of the additional filter selected.
  • one of the plurality of pattern filters disposed on the second rotating plate is changed from the light source to the subject. It is possible to move selectively in the optical path to reach.
  • one of a plurality of types of additional filters arranged on the rotating plate reaches from the X-ray tube to the subject. It can be selectively moved to the X-ray irradiation area.
  • one of a plurality of color filters disposed on the second rotating plate is selectively moved in the optical path from the light source to the subject. be able to. Then, by rotating the rotating plate and the second rotating plate in association with each other, it is possible to change the color of light in the light irradiation field according to the arrangement state of the additional filter.
  • one of a plurality of types of additional filters arranged on the rotating plate reaches from the X-ray tube to the subject. It can be selectively moved to the X-ray irradiation area.
  • one of the plurality of pattern filters disposed on the second rotating plate is selectively moved in the optical path from the light source to the subject. be able to. Then, by rotating the rotating plate and the second rotating plate in association with each other, the light pattern of the light irradiation field can be changed according to the arrangement state of the additional filter.
  • FIG. 1 is a schematic diagram of an X-ray imaging apparatus according to the present invention. It is a schematic diagram which shows principal parts, such as the X-ray irradiation part 3, etc. in the X-ray imaging apparatus which concerns on this invention.
  • 3 is a plan view of a rotating plate 11.
  • FIG. 3 is a plan view of a second rotating plate 21.
  • FIG. It is a top view of the 2nd rotation board 31 concerning a 2nd embodiment of this invention.
  • It is a schematic diagram which shows principal parts, such as the X-ray irradiation part 3 which concerns on 3rd Embodiment of this invention.
  • FIG. 1 is a schematic diagram of an X-ray imaging apparatus according to the present invention.
  • the X-ray imaging apparatus includes a table 2 on which a patient 1 as a subject is placed, an X-ray irradiation unit 3 including an X-ray tube 7 that emits X-rays toward the patient 1, and an X-ray detection unit.
  • the flat panel detector 4 outputs an image signal corresponding to the incident X-ray.
  • the collimator mechanism includes four movable diaphragms 6 for forming a rectangular region.
  • the X-ray exposure range is set by moving the movable diaphragm 6 by driving a drive motor (not shown) with a light source 24 (described later) turned on.
  • a drive motor not shown
  • a light source 24 turned on.
  • X-rays are irradiated only to the exposure range defined by the four movable diaphragms 6.
  • FIG. 2 is a schematic diagram showing the main parts of the X-ray irradiation unit 3 and the like in the X-ray imaging apparatus according to the present invention.
  • the X-ray irradiation unit 3 in the X-ray imaging apparatus includes an additional filter moving mechanism including a rotating plate 11 provided with a plurality of types of additional filters described later and a motor 12 that rotates the rotating plate 11.
  • This additional filter moving mechanism rotates the rotating plate 11 so that one of a plurality of types of additional filters arranged on the rotating plate 11 is irradiated with an X-ray irradiation region from the X-ray tube 7 to the patient 1. It is intended to selectively move to.
  • FIG. 3 is a plan view of the rotating plate 11.
  • the rotating plate 11 rotates around the shaft 13 by driving the motor 12 described above.
  • four holes are formed at radial positions around the shaft 13.
  • three kinds of additional filters 100b, 100c, and 100d are disposed in three holes.
  • the remaining one hole is an opening 100a where no additional filter is disposed.
  • the additional filter 100b is a copper-made soft wire removal filter with a thickness of 0.1 mm
  • the additional filter 100b is a copper-made soft wire removal filter with a thickness of 0.2 mm
  • the additional filter 100c is made of copper with a thickness of 0. .3 mm soft wire removal filter.
  • an aluminum soft wire removal filter may be used.
  • the X-ray irradiation unit 3 in the X-ray imaging apparatus is disposed on the opposite side to the patient 1 with respect to the collimator mechanism, and is adjusted by the collimator mechanism.
  • the light source 24 and the mirror 25 are provided as light irradiation field forming means for forming a light irradiation field for visually recognizing the light.
  • the light emitted from the light source 24 is reflected by the mirror 25 and then irradiated to the patient 1 after the irradiation area is limited by the plurality of movable diaphragms 6 in the collimator mechanism.
  • the X-rays transmitted from the X-ray tube 7 through the mirror 25 to the patient 1 and the light reflected from the light source 24 by the mirror 25 and applied to the patient 1 have the same optical axis.
  • the focus is also consistent. For this reason, the X-ray irradiation field and the light irradiation field formed by the collimator mechanism coincide.
  • the X-ray irradiation unit 3 in the X-ray imaging apparatus includes a second rotating plate 21 provided with a plurality of kinds of color filters described later, and a motor 22 that rotates the second rotating plate 21. It has a light irradiation field changing mechanism. This light irradiation field changing mechanism rotates one of the second rotary plates 21 so that one of a plurality of types of color filters disposed on the second rotary plate 21 is in the optical path from the light source 24 to the patient 1. It is intended to selectively move to.
  • FIG. 4 is a plan view of the second rotating plate 21.
  • the second rotating plate 21 rotates around the shaft 23 by driving the motor 22 described above.
  • four holes are formed at radial positions around the shaft 23.
  • color filters 101b, 101c, and 101d made of translucent plates having different colors are disposed in three holes.
  • the remaining one hole is an opening 101a where no color filter is provided.
  • the color filter 101b is a green filter
  • the color filter 101c is a yellow filter
  • the color filter 101c is an orange filter.
  • the motor 12 of the additional filter moving mechanism and the motor 22 of the light irradiation field changing mechanism described above are connected to a controller 41 and controlled by the controller 41. That is, the controller 41 controls the motor 12 of the additional filter moving mechanism and the motor 22 of the light irradiation field changing mechanism to rotate the rotating plate 11 and the second rotating plate 21 in association with each other. Thereby, a color filter is selected corresponding to the selected additional filter, and the color of light in the light irradiation field is changed.
  • the controller 41 is connected to an operation unit 42 for an operator to input various types of information and a display unit 43 for displaying various types of information.
  • an additional filter to be used by the operator is selected.
  • the selection of the additional filter is performed by the operator operating the operation unit 42.
  • the controller 41 drives the motor 12 of the additional filter moving mechanism based on the information of the additional filter selected by the operator and rotates the rotating plate 11 to move any of the additional filters 100b, 100c, 100d from the X-ray tube 7 to the patient. 1 to the X-ray irradiation area.
  • the opening 100a in which the additional filter is not provided is moved to an X-ray irradiation region from the X-ray tube 7 to the patient 1.
  • the type of additional filter selected at this time is displayed on the display unit 43.
  • the controller 41 drives the motor 22 of the light irradiation field changing mechanism based on the information of the selected additional filter, and rotates the second rotating plate 21 to correspond to the selected additional filter. Then, any one of the color filters 101b, 101c, and 101d is moved into the optical path from the light source 24 to the patient 1. More specifically, the color filter 101b is selected when the additional filter 100b is selected, the color filter 101c is selected when the additional filter 100c is selected, and the color filter 101d is selected when the additional filter 100d is selected. select. When the opening 100a in which no additional filter is disposed is selected, the opening 101a in which no color filter is disposed is selected.
  • the light source 24 is turned on to form a light irradiation field.
  • This light irradiation field displays an imaging region with light on the body surface of the patient 1.
  • the color of the light beam in the light irradiation field is a color corresponding to the selected additional filter. That is, since the color filter is selected as described above, the light field is green when the additional filter 100b is selected, and the light field is yellow when the additional filter 100c is selected. When the filter 100d is selected, the light irradiation field is orange.
  • the opening 100a in which no additional filter is provided is selected, the light irradiation field is the color of the light source 24 itself.
  • the operator uses the light field to check the X-ray field, the operator selects whether or not the additional filter is currently selected based on the color of the light field. If it is, the type of the additional filter currently selected can be confirmed. As a result, the type of the selected additional filter can be easily and reliably recognized. Therefore, it is possible to prevent the X-ray imaging using the wrong additional filter.
  • the color of the light irradiation field is selected on the table 2 on which the patient 1 is placed. You may make it attach the table
  • FIG. 5 is a plan view of the second rotating plate 31 according to the second embodiment of the present invention.
  • the second rotating plate 31 is used instead of the second rotating plate 21 shown in FIG.
  • the second rotating plate 31 rotates around the shaft 33 by driving the motor 22 described above.
  • four holes are formed at radial positions around the shaft 33.
  • pattern filters 102b, 102c, and 102d made of translucent plates having different patterns are disposed in three holes.
  • the remaining one hole is an opening 102a where no pattern filter is provided.
  • the character “Cu0.1” is displayed on the pattern filter 102b
  • the character “Cu0.2” is displayed on the pattern filter 102c
  • the character “Cu0.3” is displayed on the pattern filter 102c.
  • characters corresponding to the selected additional filter are displayed on the light irradiation field on the body surface of the patient 1. That is, when the additional filter 100b which is a 0.1 mm thick soft wire removal filter made of copper is selected, the letter “Cu0.1” is used in the light irradiation field, and the 0.2 mm thick soft wire removal filter is made. When a certain additional filter 100c is selected, the character “Cu0.2” is selected in the light irradiation field, and when the additional filter 100d, which is a soft wire removal filter made of copper having a thickness of 0.3 mm, is selected. The characters “Cu0.3” are respectively displayed. In addition, when the opening 100a in which no additional filter is provided is selected, no characters are displayed in the light irradiation field.
  • symbols such as “ ⁇ ”, “ ⁇ ”, and “x” may be displayed in addition to the above-described characters.
  • FIG. 6 is a schematic diagram showing the main parts of the X-ray irradiation unit 3 and the like according to the third embodiment of the present invention.
  • symbol is attached
  • the color of light in the light field is changed by selecting a color filter corresponding to the selected additional filter.
  • the selected additional filter is selected.
  • the light pattern of the light irradiation field is changed by selecting a pattern filter corresponding to the above.
  • the blinking state of the light applied to the light irradiation field is changed in correspondence with the selected additional filter.
  • the controller 41 directly controls the light source 24 to change the interval between the lighting time and the light-off time of the light source 24 according to the selected additional filter.
  • the additional filter 100b the light source 24 is turned on for 5 seconds and turned off for 1 second.
  • the additional filter 100c the light source 24 is turned on for 3 seconds and turned off for 1 second.
  • the additional filter 100d the light source 24 is turned on for 2 seconds and turned off for 2 seconds.
  • the opening 100a where no additional filter is disposed is selected, the light source 24 is continuously turned on.
  • the operator uses the light field to check the X-ray field, whether or not the additional filter is currently selected based on the blinking state of the light field, If selected, the type of the additional filter currently selected can be confirmed. As a result, the type of the selected additional filter can be easily and reliably recognized. Therefore, it is possible to prevent the X-ray imaging using the wrong additional filter.
  • the additional filter, the color filter, and the pattern filter are selectively used using the rotary plate 11 and the second rotary plates 21 and 31, but a filter moving mechanism other than the rotary plate is used. Further, an additional filter, a color filter, and a pattern filter may be selectively used.

Abstract

Disclosed is an X-ray imaging device with which an operator can readily and reliably recognize the type of add-on filter that is selected. An add-on filter is selected in accordance with the rotation of a rotary plate (11) caused by a motor (12). The information of the selected add-on filter is sent to a controller (41). The controller (41) drives a motor (22) on the basis of information of the selected add-on filter, and any one of a plurality of colour filters is moved into the optical path from a light source (24) to a patient (1) by rotating a second rotary plate (21) in accordance with the selected add-on filter. As a result, the colour of the light rays of the light field becomes a colour corresponding to the selected add-on filter.

Description

Ｘ線撮影装置X-ray equipment
　この発明は、被検体に向けてＸ線を照射するＸ線管と、このＸ線管から照射され前記被検体を通過したＸ線を検出するフラットパネルディテクタ等のＸ線検出部と、Ｘ線管と被検体との間に配設されＸ線管から被検体に向けて照射されるＸ線照射野を調整するコリメータ機構と、軟線除去フィルター等の付加フィルターとを備えたＸ線撮影装置に関する。 The present invention relates to an X-ray tube that irradiates a subject with X-rays, an X-ray detector such as a flat panel detector that detects X-rays emitted from the X-ray tube and passed through the subject, and an X-ray TECHNICAL FIELD The present invention relates to an X-ray imaging apparatus including a collimator mechanism that is disposed between a tube and a subject and adjusts an X-ray irradiation field that is irradiated from the X-ray tube toward the subject, and an additional filter such as a soft ray removal filter. .
　このようなＸ線撮影装置に使用されるＸ線管からは、低エネルギーの軟線から高エネルギーの硬線まで、広い範囲にわたるエネルギーのＸ線成分を含むＸ線が照射される。これらのＸ線のうち、エネルギーの低い軟線とエネルギーの高い硬線とは、下記の表１に示すような特徴を有している。 The X-ray tube used in such an X-ray imaging apparatus irradiates X-rays containing X-ray components having a wide range of energy from low energy soft rays to high energy hard rays. Among these X-rays, low energy soft wires and high energy hard wires have the characteristics shown in Table 1 below.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　この表１に示すように、軟線は透過力が弱いことから、Ｘ線のエネルギーが被検体である患者の体内で消費されることになり、吸収線量(被曝量)が多くなる。このため、不要な軟線を除去するため、コリメータ機構の内部等に、アルミニュウム製の薄板や銅製の薄板から構成された軟線除去フィルター等の付加フィルターを装着して撮影を行うことがある。この場合においては、付加フィルターの厚みを大きくすれば、より多くの軟線が除去されることになる。 As shown in Table 1, since the soft line has a low penetrating power, the X-ray energy is consumed in the body of the patient as the subject, and the absorbed dose (exposure dose) increases. For this reason, in order to remove unnecessary soft lines, photographing may be performed by attaching an additional filter such as a soft line removal filter made of an aluminum thin plate or a copper thin plate inside the collimator mechanism or the like. In this case, if the thickness of the additional filter is increased, more soft lines are removed.
　一方、軟線を使用してＸ線撮影を行った場合には、撮影された画像のコントラストが高いことから、密度差の小さい組織を識別できるという特徴がある。また、軟線を利用した撮影においては、散乱光が少ないという特徴もある。このため、Ｘ線撮影装置を使用した検査の種類によっては、軟線を使用する必要も生ずる。 On the other hand, when X-ray imaging is performed using a soft wire, the contrast of the captured image is high, and thus there is a feature that a tissue with a small density difference can be identified. In addition, there is a feature that there is little scattered light in photographing using soft rays. For this reason, depending on the type of inspection using the X-ray imaging apparatus, it becomes necessary to use a soft wire.
　このような要請に対応するため、従来、複数種の付加フィルターを選択的に使用するようにしたＸ線撮影装置も提案されている（特許文献１乃至特許文献３参照）。このような従来のＸ線撮影装置においては、複数種の付加フィルターを予めコリメータ機構内等の装置内部に装着しておき、これらの付加フィルターを付加フィルターの移動機構により移動させることにより、必要な撮影条件に対応した付加フィルターを選択使用する構成となっている。 In order to meet such a demand, conventionally, X-ray imaging apparatuses that selectively use a plurality of types of additional filters have also been proposed (see Patent Documents 1 to 3). In such a conventional X-ray imaging apparatus, a plurality of types of additional filters are mounted in advance in the apparatus such as the collimator mechanism, and these additional filters are moved by the moving mechanism of the additional filter. An additional filter corresponding to the shooting conditions is selectively used.
特開２０００－５１５６号公報JP 2000-5156 A 特開２００９－２９３号公報JP 2009-293 A 特開２００５－３４２３６３号公報JP 2005-342363 A
　複数種の付加フィルターを予め装置内部に装着しておき、これらの付加フィルターを付加フィルターの移動機構により移動させて選択使用する構成を採用した場合には、外部から現在設定されている付加フィルターを目視により確認することはできない。このため、従来のＸ線撮影装置においては、一般的に、現在設定されている付加フィルターの種類を、表示部に文字やランプで表示するようにしている。 If a configuration is adopted in which multiple types of additional filters are installed in the device in advance and these additional filters are moved and moved by the additional filter moving mechanism, the additional filter currently set from the outside is used. It cannot be confirmed visually. For this reason, in the conventional X-ray imaging apparatus, generally, the type of the additional filter currently set is displayed on the display unit with characters or lamps.
　ところで、このようなＸ線撮影装置においては、コリメータ機構を利用して、Ｘ線管から被検体である患者に向けて照射されるＸ線照射野を調整するようにしている。このときには、コリメータ機構に対し患者とは逆側に配設された光源を点灯させることにより光照射野を形成し、この光照射野によりコリメータ機構により調整されたＸ線照射野を視認するようにしている。このため、Ｘ線撮影装置のオペレータは、患者を見ながらＸ線の照射範囲を設定することになり、表示部に表示された付加フィルターの種類を見落としてしまう場合がある。 By the way, in such an X-ray imaging apparatus, a collimator mechanism is used to adjust the X-ray irradiation field irradiated from the X-ray tube toward the patient as the subject. At this time, a light irradiation field is formed by turning on a light source disposed on the side opposite to the patient with respect to the collimator mechanism, and the X-ray irradiation field adjusted by the collimator mechanism is visually recognized by this light irradiation field. ing. For this reason, the operator of the X-ray imaging apparatus sets the X-ray irradiation range while watching the patient, and may overlook the type of additional filter displayed on the display unit.
　付加フィルターの種類を見落として、誤った付加フィルターを使用してＸ線撮影を行った場合には、次のような問題を生ずる。すなわち、比較的厚めの付加フィルターを使用して、軟線を十分に除去しなければいけないＸ線撮影において、薄い付加フィルターを使用してＸ線撮影を行ったり、付加フィルターを使用せずにＸ線撮影を行った場合には、患者に余分なＸ線の被曝を与えることになる。また、これとは逆に、薄い付加フィルターを使用したり付加フィルターを使用しないでＸ線撮影を行わなければならない場合に、厚い付加フィルターを使用してＸ線撮影を行った場合には、目的とするコントラストが得られないことから密度差の小さい組織を区別することができず、撮影された画像が診断に使用できないことになる。この場合には、再度の撮影が必要となり、結局、患者に余分なＸ線の被曝を与えることになる。 If the type of additional filter is overlooked and X-ray imaging is performed using the wrong additional filter, the following problems occur. That is, in X-ray photography in which soft lines must be sufficiently removed using a relatively thick additional filter, X-ray photography can be performed using a thin additional filter, or without using an additional filter. When imaging is performed, extra X-ray exposure is given to the patient. On the other hand, if X-ray photography must be performed using a thick additional filter when X-ray imaging must be performed using a thin additional filter or no additional filter, the purpose is Therefore, a tissue with a small density difference cannot be distinguished, and the photographed image cannot be used for diagnosis. In this case, re-imaging is necessary, and eventually the patient is exposed to extra X-ray exposure.
　この発明は上記課題を解決するためになされたものであり、オペレータが選択されている付加フィルターの種類を容易かつ確実に認識することが可能な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 to solve the above-described problems, and an object of the present invention is to provide an X-ray imaging apparatus capable of easily and reliably recognizing the type of additional filter selected by the operator.
　請求項１に記載の発明は、被検体に向けてＸ線を照射するＸ線管と、前記Ｘ線管から照射され前記被検体を通過したＸ線を検出するＸ線検出部と、前記Ｘ線管と前記被検体との間に配設され、前記Ｘ線管から前記被検体に向けて照射されるＸ線照射野を調整するコリメータ機構と、を備えたＸ線撮影装置において、前記コリメータ機構により調整されたＸ線照射野を視認するための光照射野を形成する光照射野形成手段と、前記Ｘ線管から前記被検体に至るＸ線の照射領域と、このＸ線照射領域から離隔した領域との間で付加フィルターを移動させる付加フィルター移動手段と、前記付加フィルター移動手段による付加フィルターの移動状態に応じて前記光照射野形成手段による光照射野の光の状態を変更する光照射野変更手段とを備えたことを特徴とする。 The invention according to claim 1 is an X-ray tube that irradiates a subject with X-rays, an X-ray detection unit that detects X-rays emitted from the X-ray tube and passed through the subject, and the X-rays An X-ray imaging apparatus comprising: a collimator mechanism that is disposed between the X-ray tube and the subject and adjusts an X-ray irradiation field irradiated from the X-ray tube toward the subject. Light irradiation field forming means for forming a light irradiation field for visually recognizing the X-ray irradiation field adjusted by the mechanism, an X-ray irradiation area from the X-ray tube to the subject, and from the X-ray irradiation area Light for changing the light state of the light field by the light field forming means according to the movement state of the additional filter by the additional filter moving means and the additional filter moving means for moving the additional filter between the separated regions With irradiation field changing means And wherein the door.
　請求項２に記載の発明は、請求項１に記載の発明において、前記光照射野変更手段は、前記光照射野形成手段による光照射野の光の色、前記光照射野に照射される光のパターン、前記光照射野に照射される光の点滅状態のいずれか一つを変更する。 According to a second aspect of the present invention, in the first aspect of the present invention, the light irradiation field changing means is a light color of the light irradiation field by the light irradiation field forming means, and the light irradiated to the light irradiation field. Or the blinking state of the light applied to the light irradiation field is changed.
　請求項３に記載の発明は、請求項１に記載の発明において、前記付加フィルター移動手段は、複数種の付加フィルターを、前記Ｘ線管から前記被検体に至るＸ線の照射領域に選択的に移動させる。 According to a third aspect of the present invention, in the first aspect of the present invention, the additional filter moving means selectively selects a plurality of types of additional filters in an X-ray irradiation region from the X-ray tube to the subject. Move to.
　請求項４に記載の発明は、請求項３に記載の発明において、前記付加フィルター移動手段は、前記複数種の付加フィルターが配設された回転板と、前記回転板を回転させるモータとを備え、前記回転板を回転させることにより、前記回転板に配設された複数種の付加フィルターのうちの一つを、前記Ｘ線管から前記被検体に至るＸ線の照射領域に選択的に移動させる。 According to a fourth aspect of the present invention, in the invention of the third aspect, the additional filter moving means includes a rotating plate on which the plurality of types of additional filters are disposed, and a motor that rotates the rotating plate. By rotating the rotating plate, one of a plurality of additional filters arranged on the rotating plate is selectively moved to an X-ray irradiation region from the X-ray tube to the subject. Let
　請求項５に記載の発明は、請求項３に記載の発明において、前記光照射野変更手段は、光源と、前記光源と前記被検体との間に配設され、互いに異なる色を有する透光板から構成される複数の色フィルターを、前記光源から前記被検体に至る光路中に選択的に移動させる色フィルター移動手段とを備える。 According to a fifth aspect of the present invention, in the invention of the third aspect, the light irradiation field changing means is disposed between a light source, the light source and the subject, and has different colors. And a color filter moving unit that selectively moves a plurality of color filters formed of a plate in an optical path from the light source to the subject.
　請求項６に記載の発明は、請求項５に記載の発明において、前記光照射野変更手段は、互いに異なる色を有する透光板から構成される複数の色フィルターが配設された第２回転板と、前記第２回転板を回転させるモータとを備え、前記第２回転板を回転させることにより、前記第２回転板に配設された複数の色フィルターのうちの一つを、前記光源から前記被検体に至る光路中に選択的に移動させる。 According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the light irradiation field changing means is a second rotation in which a plurality of color filters composed of translucent plates having different colors are arranged. A plate and a motor for rotating the second rotating plate, and rotating the second rotating plate to change one of a plurality of color filters disposed on the second rotating plate to the light source To the optical path from the subject to the subject.
　請求項７に記載の発明は、請求項３に記載の発明において、前記光照射野変更手段は、光源と、前記光源と前記被検体との間に配設され、互いに異なるパターンを有する透光板から構成される複数のパターンフィルターを、前記光源から前記被検体に至る光路中に選択的に移動させるパターンフィルター移動手段とを備える。 The invention described in claim 7 is the light transmitting device according to claim 3, wherein the light irradiation field changing means is disposed between the light source, the light source and the subject, and has different patterns. Pattern filter moving means for selectively moving a plurality of pattern filters composed of a plate in an optical path from the light source to the subject;
　請求項８に記載の発明は、請求項７に記載の発明において、前記光照射野変更手段は、互いに異なるパターンを有する透光板から構成される複数のパターンフィルターが配設された第２回転板と、前記第２回転板を回転させるモータとを備え、前記第２回転板を回転させることにより、前記第２回転板に配設された複数のパターンフィルターのうちの一つを、前記光源から前記被検体に至る光路中に選択的に移動させる。 The invention according to claim 8 is the second rotation according to claim 7, wherein the light irradiation field changing means is provided with a plurality of pattern filters composed of translucent plates having different patterns. A plate and a motor for rotating the second rotating plate, and rotating the second rotating plate to change one of a plurality of pattern filters disposed on the second rotating plate to the light source To the optical path from the subject to the subject.
　請求項９に記載の発明は、被検体に向けてＸ線を照射するＸ線管と、前記Ｘ線管から照射され前記被検体を通過したＸ線を検出するＸ線検出部と、前記Ｘ線管と前記被検体との間に配設され、前記Ｘ線管から前記被検体に向けて照射されるＸ線照射野を調整するコリメータ機構と、を備えたＸ線撮影装置において、複数種の付加フィルターが配設された回転板と、前記回転板を回転させるモータとを備え、前記回転板を回転させることにより、前記回転板に配設された複数種の付加フィルターのうちの一つを、前記Ｘ線管から前記被検体に至るＸ線の照射領域に選択的に移動させる付加フィルター移動手段と、互いに異なる色を有する透光板から構成される複数の色フィルターが配設された第２回転板と、前記第２回転板を回転させるモータとを備え、前記コリメータ機構により調整されたＸ線照射野を視認するための光照射野を形成するとともに、前記第２回転板を回転させることにより、前記第２回転板に配設された複数の色フィルターのうちの一つを、前記光源から前記被検体に至る光路中に選択的に移動させる光照射野形成手段と、を備え、前記回転板と前記第２回転板とを関連づけて回転させることにより、前記付加フィルター移動手段による前記付加フィルターの前記Ｘ線照射領域に対する配置状況に応じて、前記光照射野形成手段により形成される光照射野の光の色を変更することを特徴とする。 The invention according to claim 9 is an X-ray tube that irradiates a subject with X-rays, an X-ray detection unit that detects X-rays irradiated from the X-ray tube and passed through the subject, and the X-rays An X-ray imaging apparatus comprising: a collimator mechanism that is disposed between the X-ray tube and the subject and adjusts an X-ray irradiation field irradiated from the X-ray tube toward the subject. One of a plurality of types of additional filters disposed on the rotating plate by rotating the rotating plate, and a rotating plate having the additional filter disposed thereon and a motor that rotates the rotating plate. And an additional filter moving means for selectively moving an X-ray to an X-ray irradiation region from the X-ray tube to the subject, and a plurality of color filters composed of translucent plates having different colors A second rotating plate and a motor for rotating the second rotating plate; And forming a light irradiation field for visually recognizing the X-ray irradiation field adjusted by the collimator mechanism, and rotating the second rotation plate, thereby arranging a plurality of light irradiation fields disposed on the second rotation plate. A light irradiation field forming means for selectively moving one of the color filters in an optical path from the light source to the subject, and rotating the rotating plate and the second rotating plate in association with each other. By changing the color of the light of the light irradiation field formed by the light irradiation field forming means according to the state of arrangement of the additional filter with respect to the X-ray irradiation region by the additional filter moving means, To do.
　請求項１０に記載の発明は、被検体に向けてＸ線を照射するＸ線管と、前記Ｘ線管から照射され前記被検体を通過したＸ線を検出するＸ線検出部と、前記Ｘ線管と前記被検体との間に配設され、前記Ｘ線管から前記被検体に向けて照射されるＸ線照射野を調整するコリメータ機構と、を備えたＸ線撮影装置において、複数種の付加フィルターが配設された回転板と、前記回転板を回転させるモータとを備え、前記回転板を回転させることにより、前記回転板に配設された複数種の付加フィルターのうちの一つを、前記Ｘ線管から前記被検体に至るＸ線の照射領域に選択的に移動させる付加フィルター移動手段と、互いに異なるパターンを有する透光板から構成される複数のパターンフィルターが配設された第２回転板と、前記第２回転板を回転させるモータとを備え、前記コリメータ機構により調整されたＸ線照射野を視認するための光照射野を形成するとともに、前記第２回転板を回転させることにより、前記第２回転板に配設された複数のパターンフィルターのうちの一つを、前記光源から前記被検体に至る光路中に選択的に移動させる光照射野形成手段と、を備え、前記回転板と前記第２回転板とを関連づけて回転させることにより、前記付加フィルター移動手段による前記付加フィルターの前記Ｘ線照射領域に対する配置状況に応じて、前記光照射野形成手段により形成される光照射野の光のパターンを変更することを特徴とする。 The invention according to claim 10 is an X-ray tube that irradiates a subject with X-rays, an X-ray detector that detects X-rays that have been irradiated from the X-ray tube and passed through the subject, and the X-rays An X-ray imaging apparatus comprising: a collimator mechanism that is disposed between the X-ray tube and the subject and adjusts an X-ray irradiation field irradiated from the X-ray tube toward the subject. One of a plurality of types of additional filters disposed on the rotating plate by rotating the rotating plate, and a rotating plate having the additional filter disposed thereon and a motor that rotates the rotating plate. And an additional filter moving means for selectively moving an X-ray to an X-ray irradiation region from the X-ray tube to the subject, and a plurality of pattern filters composed of translucent plates having different patterns A second rotating plate and the second rotating plate A rotating motor, and forming a light irradiation field for visually recognizing the X-ray irradiation field adjusted by the collimator mechanism, and rotating the second rotating plate to dispose the second rotating plate. A light irradiation field forming means for selectively moving one of the plurality of patterned filters in an optical path from the light source to the subject, and the rotating plate and the second rotating plate. By rotating in association, the light pattern of the light field formed by the light field forming unit is changed according to the arrangement state of the additional filter with respect to the X-ray irradiation region by the additional filter moving unit. It is characterized by.
　請求項１に記載の発明によれば、オペレータがＸ線照射野を設定するために光照射野を確認したときに、光照射野の光の状態に基づいて選択されている付加フィルターの種類を認識することが可能となる。従って、選択されている付加フィルターの種類を容易かつ確実に認識することができ、誤った付加フィルターを使用してＸ線撮影がなされることを未然に防止することが可能となる。 According to the first aspect of the present invention, when the operator confirms the light irradiation field in order to set the X-ray irradiation field, the type of the additional filter selected based on the light state of the light irradiation field is selected. It becomes possible to recognize. Therefore, the type of the selected additional filter can be easily and reliably recognized, and it is possible to prevent the X-ray imaging from being performed using the wrong additional filter.
　請求項２に記載の発明によれば、光照射野の光の色、光照射野に照射される光のパターン、光照射野に照射される光の点滅状態のいずれか一つに基づいて、選択されている付加フィルターの種類を認識することが可能となる。 According to invention of Claim 2, based on any one of the color of the light of a light irradiation field, the pattern of the light irradiated to a light irradiation field, and the blink state of the light irradiated to a light irradiation field, It is possible to recognize the type of additional filter selected.
　請求項３に記載の発明によれば、付加フィルター移動手段により、複数種の付加フィルターのちの一つを選択して、Ｘ線管から被検体に至るＸ線の照射領域に容易に移動させることが可能となる。 According to the third aspect of the present invention, the additional filter moving means selects one of the plural types of additional filters and easily moves it to the X-ray irradiation region from the X-ray tube to the subject. Is possible.
　請求項４に記載の発明によれば、モータの駆動で回転板を回転させることにより、回転板に配設された複数種の付加フィルターのうちの一つを、Ｘ線管から被検体に至るＸ線の照射領域に選択的に移動させることが可能となる。 According to the invention described in claim 4, by rotating the rotating plate by driving the motor, one of a plurality of types of additional filters arranged on the rotating plate reaches the subject from the X-ray tube. It is possible to selectively move to the X-ray irradiation area.
　請求項５に記載の発明によれば、互いに異なる色を有する透光板から構成される複数の色フィルターを、光源から被検体に至る光路中に選択的に移動させることにより、光照射野の光の色を、選択されている付加フィルターの種類に対応させて容易に変更することが可能となる。 According to the fifth aspect of the present invention, by selectively moving a plurality of color filters composed of translucent plates having different colors from each other in the optical path from the light source to the subject, It is possible to easily change the color of light in accordance with the type of the additional filter selected.
　請求項６に記載の発明によれば、モータの駆動で第２回転板を回転させることにより、第２回転板に配設された複数の色フィルターのうちの一つを、光源から被検体に至る光路中に選択的に移動させることが可能となる。 According to the invention described in claim 6, by rotating the second rotating plate by driving the motor, one of the plurality of color filters arranged on the second rotating plate is changed from the light source to the subject. It is possible to move selectively in the optical path to reach.
　請求項７に記載の発明によれば、互いに異なるパターンを有する透光板から構成される複数のパターンフィルターを、光源から被検体に至る光路中に選択的に移動させることにより、光照射野の光のパターンを、選択されている付加フィルターの種類に対応させて容易に変更することが可能となる。 According to the seventh aspect of the present invention, by selectively moving a plurality of pattern filters composed of translucent plates having different patterns from each other in the optical path from the light source to the subject, The light pattern can be easily changed according to the type of the additional filter selected.
　請求項８に記載の発明によれば、モータの駆動で第２回転板を回転させることにより、第２回転板に配設された複数のパターンフィルターのうちの一つを、光源から被検体に至る光路中に選択的に移動させることが可能となる。 According to the invention described in claim 8, by rotating the second rotating plate by driving the motor, one of the plurality of pattern filters disposed on the second rotating plate is changed from the light source to the subject. It is possible to move selectively in the optical path to reach.
　請求項９に記載の発明によれば、モータの駆動で回転板を回転させることにより、回転板に配設された複数種の付加フィルターのうちの一つを、Ｘ線管から被検体に至るＸ線の照射領域に選択的に移動させることができる。また、モータの駆動で第２回転板を回転させることにより、第２回転板に配設された複数の色フィルターのうちの一つを、光源から被検体に至る光路中に選択的に移動させることができる。そして、回転板と第２回転板とを関連づけて回転させることにより、付加フィルターの配置状況に応じて光照射野の光の色を変更することが可能となる。 According to the ninth aspect of the present invention, by rotating the rotating plate by driving the motor, one of a plurality of types of additional filters arranged on the rotating plate reaches from the X-ray tube to the subject. It can be selectively moved to the X-ray irradiation area. In addition, by rotating the second rotating plate by driving the motor, one of a plurality of color filters disposed on the second rotating plate is selectively moved in the optical path from the light source to the subject. be able to. Then, by rotating the rotating plate and the second rotating plate in association with each other, it is possible to change the color of light in the light irradiation field according to the arrangement state of the additional filter.
　請求項１０に記載の発明によれば、モータの駆動で回転板を回転させることにより、回転板に配設された複数種の付加フィルターのうちの一つを、Ｘ線管から被検体に至るＸ線の照射領域に選択的に移動させることができる。また、モータの駆動で第２回転板を回転させることにより、第２回転板に配設された複数のパターンフィルターのうちの一つを、光源から被検体に至る光路中に選択的に移動させることができる。そして、回転板と第２回転板とを関連づけて回転させることにより、付加フィルターの配置状況に応じて光照射野の光のパターンを変更することが可能となる。 According to the invention described in claim 10, by rotating the rotating plate by driving the motor, one of a plurality of types of additional filters arranged on the rotating plate reaches from the X-ray tube to the subject. It can be selectively moved to the X-ray irradiation area. In addition, by rotating the second rotating plate by driving the motor, one of the plurality of pattern filters disposed on the second rotating plate is selectively moved in the optical path from the light source to the subject. be able to. Then, by rotating the rotating plate and the second rotating plate in association with each other, the light pattern of the light irradiation field can be changed according to the arrangement state of the additional filter.
この発明に係るＸ線撮影装置の概要図である。1 is a schematic diagram of an X-ray imaging apparatus according to the present invention. この発明に係るＸ線撮影装置におけるＸ線照射部３等の要部を示す概要図である。It is a schematic diagram which shows principal parts, such as the X-ray irradiation part 3, etc. in the X-ray imaging apparatus which concerns on this invention. 回転板１１の平面図である。3 is a plan view of a rotating plate 11. FIG. 第２回転板２１の平面図である。3 is a plan view of a second rotating plate 21. FIG. この発明の第２実施形態に係る第２回転板３１の平面図である。It is a top view of the 2nd rotation board 31 concerning a 2nd embodiment of this invention. この発明の第３実施形態に係るＸ線照射部３等の要部を示す概要図である。It is a schematic diagram which shows principal parts, such as the X-ray irradiation part 3 which concerns on 3rd Embodiment of this invention.
　以下、この発明の実施の形態を図面に基づいて説明する。図１は、この発明に係るＸ線撮影装置の概要図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of an X-ray imaging apparatus according to the present invention.
　このＸ線撮影装置は、被検体である患者１を載置するテーブル２と、患者１に向けてＸ線を照射するＸ線管７を備えたＸ線照射部３と、Ｘ線検出部としてのフラットパネルディテクタ４と、複数の可動絞り６を備えるコリメータ機構とを備える。Ｘ線管７から照射されたＸ線は、患者１を透過してフラットパネルディテクタ４に入射する。フラットパネルディテクタ４は、入射したＸ線に対応した画像信号を出力する。 The X-ray imaging apparatus includes a table 2 on which a patient 1 as a subject is placed, an X-ray irradiation unit 3 including an X-ray tube 7 that emits X-rays toward the patient 1, and an X-ray detection unit. Flat panel detector 4 and a collimator mechanism including a plurality of movable diaphragms 6. X-rays irradiated from the X-ray tube 7 pass through the patient 1 and enter the flat panel detector 4. The flat panel detector 4 outputs an image signal corresponding to the incident X-ray.
　なお、コリメータ機構は、矩形状の領域を形成するための４枚の可動絞り６を備える。Ｘ線撮影を行うときには、後述する光源２４を点灯した状態で、図示しない駆動モータの駆動で可動絞り６を各々移動させることにより、Ｘ線の曝射範囲を設定する。そして、この状態でＸ線管７からＸ線を照射することにより、４枚の可動絞り６により規定された曝射範囲にのみＸ線が照射される。 The collimator mechanism includes four movable diaphragms 6 for forming a rectangular region. When performing X-ray imaging, the X-ray exposure range is set by moving the movable diaphragm 6 by driving a drive motor (not shown) with a light source 24 (described later) turned on. In this state, by irradiating X-rays from the X-ray tube 7, X-rays are irradiated only to the exposure range defined by the four movable diaphragms 6.
　図２は、この発明に係るＸ線撮影装置におけるＸ線照射部３等の要部を示す概要図である。 FIG. 2 is a schematic diagram showing the main parts of the X-ray irradiation unit 3 and the like in the X-ray imaging apparatus according to the present invention.
　この発明に係るＸ線撮影装置におけるＸ線照射部３は、後述する複数種の付加フィルターが配設された回転板１１と、この回転板１１を回転させるモータ１２とを備えた付加フィルター移動機構を有する。この付加フィルター移動機構は、回転板１１を回転させることにより、回転板１１に配設された複数種の付加フィルターのうちの一つを、Ｘ線管７から患者１に至るＸ線の照射領域に選択的に移動させるためのものである。 The X-ray irradiation unit 3 in the X-ray imaging apparatus according to the present invention includes an additional filter moving mechanism including a rotating plate 11 provided with a plurality of types of additional filters described later and a motor 12 that rotates the rotating plate 11. Have This additional filter moving mechanism rotates the rotating plate 11 so that one of a plurality of types of additional filters arranged on the rotating plate 11 is irradiated with an X-ray irradiation region from the X-ray tube 7 to the patient 1. It is intended to selectively move to.
　図３は、回転板１１の平面図である。 FIG. 3 is a plan view of the rotating plate 11.
　この回転板１１は、上述したモータ１２の駆動により軸１３を中心に回転する。この回転板１１には、４個の孔部が軸１３を中心とした放射状の位置に穿設されている。そして、これらの孔部のうち、三箇所の孔部には、各々異なる種類の付加フィルター１００ｂ、１００ｃ、１００ｄが配設されている。そして、残り一箇所の孔部は、付加フィルターが配設されていない開口部１００ａとなっている。ここで、例えば、付加フィルター１００ｂは銅製の厚さ０．１ｍｍの軟線除去フィルターであり、付加フィルター１００ｂは銅製の厚さ０．２ｍｍの軟線除去フィルターであり、付加フィルター１００ｃは銅製の厚さ０．３ｍｍの軟線除去フィルターである。なお、銅製の軟線除去フィルターにかえて、アルミニュウム製の軟線除去フィルターを使用してもよい。 The rotating plate 11 rotates around the shaft 13 by driving the motor 12 described above. In the rotating plate 11, four holes are formed at radial positions around the shaft 13. Of these holes, three kinds of additional filters 100b, 100c, and 100d are disposed in three holes. The remaining one hole is an opening 100a where no additional filter is disposed. Here, for example, the additional filter 100b is a copper-made soft wire removal filter with a thickness of 0.1 mm, the additional filter 100b is a copper-made soft wire removal filter with a thickness of 0.2 mm, and the additional filter 100c is made of copper with a thickness of 0. .3 mm soft wire removal filter. Instead of the copper soft wire removal filter, an aluminum soft wire removal filter may be used.
　再度、図２を参照して、この発明に係るＸ線撮影装置におけるＸ線照射部３は、コリメータ機構に対し患者１とは逆側に配設され、コリメータ機構により調整されたＸ線照射野を視認するための光照射野を形成する、光照射野形成手段としての光源２４およびミラー２５を備える。この光源２４から照射された光は、ミラー２５により反射された後、コリメータ機構における複数の可動絞り６によりその照射領域を制限された後に、患者１に照射される。このとき、Ｘ線管７からミラー２５を透過して患者１に照射されるＸ線と、光源２４からミラー２５で反射されて患者１に照射される光とは、その光軸が一致しており、また、その焦点も一致している。このため、コリメータ機構により形成されるＸ線照射野と光照射野は一致する。 Referring to FIG. 2 again, the X-ray irradiation unit 3 in the X-ray imaging apparatus according to the present invention is disposed on the opposite side to the patient 1 with respect to the collimator mechanism, and is adjusted by the collimator mechanism. The light source 24 and the mirror 25 are provided as light irradiation field forming means for forming a light irradiation field for visually recognizing the light. The light emitted from the light source 24 is reflected by the mirror 25 and then irradiated to the patient 1 after the irradiation area is limited by the plurality of movable diaphragms 6 in the collimator mechanism. At this time, the X-rays transmitted from the X-ray tube 7 through the mirror 25 to the patient 1 and the light reflected from the light source 24 by the mirror 25 and applied to the patient 1 have the same optical axis. The focus is also consistent. For this reason, the X-ray irradiation field and the light irradiation field formed by the collimator mechanism coincide.
　また、この発明に係るＸ線撮影装置におけるＸ線照射部３は、後述する複数種の色フィルターが配設された第２回転板２１と、この第２回転板２１を回転させるモータ２２とを備えた光照射野変更機構を有する。この光照射野変更機構は、第２回転板２１を回転させることにより、第２回転板２１に配設された複数種の色フィルターのうちの一つを、光源２４から患者１に至る光路中に選択的に移動させるためのものである。 The X-ray irradiation unit 3 in the X-ray imaging apparatus according to the present invention includes a second rotating plate 21 provided with a plurality of kinds of color filters described later, and a motor 22 that rotates the second rotating plate 21. It has a light irradiation field changing mechanism. This light irradiation field changing mechanism rotates one of the second rotary plates 21 so that one of a plurality of types of color filters disposed on the second rotary plate 21 is in the optical path from the light source 24 to the patient 1. It is intended to selectively move to.
　図４は、第２回転板２１の平面図である。 FIG. 4 is a plan view of the second rotating plate 21.
　この第２回転板２１は、上述したモータ２２の駆動により軸２３を中心に回転する。この第２回転板２１には、４個の孔部が軸２３を中心とした放射状の位置に穿設されている。そして、これらの孔部のうち、三箇所の孔部には、各々異なる色を有する透光板よりなる色フィルター１０１ｂ、１０１ｃ、１０１ｄが配設されている。そして、残り一箇所の孔部は、色フィルターが配設されていない開口部１０１ａとなっている。ここで、例えば、色フィルター１０１ｂは緑色のフィルターであり、色フィルター１０１ｃは黄色のフィルターであり、色フィルター１０１ｃはオレンジ色のフィルターである。 The second rotating plate 21 rotates around the shaft 23 by driving the motor 22 described above. In the second rotating plate 21, four holes are formed at radial positions around the shaft 23. Of these holes, color filters 101b, 101c, and 101d made of translucent plates having different colors are disposed in three holes. The remaining one hole is an opening 101a where no color filter is provided. Here, for example, the color filter 101b is a green filter, the color filter 101c is a yellow filter, and the color filter 101c is an orange filter.
　図２に示すように、上述した付加フィルター移動機構のモータ１２および光照射野変更機構のモータ２２は、コントローラ４１に連結されており、このコントローラ４１により制御される。すなわち、このコントローラ４１は、付加フィルター移動機構のモータ１２および光照射野変更機構のモータ２２を制御して、回転板１１と第２回転板２１とを関連づけて回転させる。これにより、選択された付加フィルターに対応して色フィルターを選択し、光照射野の光の色を変更する。また、このコントローラ４１には、オペレータが各種の情報を入力するための操作部４２および各種の情報を表示するための表示部４３が接続されている。 As shown in FIG. 2, the motor 12 of the additional filter moving mechanism and the motor 22 of the light irradiation field changing mechanism described above are connected to a controller 41 and controlled by the controller 41. That is, the controller 41 controls the motor 12 of the additional filter moving mechanism and the motor 22 of the light irradiation field changing mechanism to rotate the rotating plate 11 and the second rotating plate 21 in association with each other. Thereby, a color filter is selected corresponding to the selected additional filter, and the color of light in the light irradiation field is changed. The controller 41 is connected to an operation unit 42 for an operator to input various types of information and a display unit 43 for displaying various types of information.
　以上のような構成を有するＸ線撮影装置においてＸ線撮影を行う場合には、オペレータが使用すべき付加フィルターを選択する。この付加フィルターの選択は、オペレータが操作部４２を操作することにより行われる。 When performing X-ray imaging in the X-ray imaging apparatus having the above configuration, an additional filter to be used by the operator is selected. The selection of the additional filter is performed by the operator operating the operation unit 42.
　コントローラ４１は、オペレータが選択した付加フィルターの情報に基づいて付加フィルター移動機構のモータ１２を駆動し、回転板１１を回転させて付加フィルター１００ｂ、１００ｃ、１００ｄのいずれかをＸ線管７から患者１に至るＸ線の照射領域に移動させる。なお、付加フィルターを使用しないＸ線撮影が選択された場合においては、付加フィルターが配設されない開口部１００ａをＸ線管７から患者１に至るＸ線の照射領域に移動させる。このときに選択された付加フィルターの種類は、表示部４３に表示される。 The controller 41 drives the motor 12 of the additional filter moving mechanism based on the information of the additional filter selected by the operator and rotates the rotating plate 11 to move any of the additional filters 100b, 100c, 100d from the X-ray tube 7 to the patient. 1 to the X-ray irradiation area. When X-ray imaging that does not use an additional filter is selected, the opening 100a in which the additional filter is not provided is moved to an X-ray irradiation region from the X-ray tube 7 to the patient 1. The type of additional filter selected at this time is displayed on the display unit 43.
　また、これと並行して、コントローラ４１は、選択された付加フィルターの情報に基づいて光照射野変更機構のモータ２２を駆動し、第２回転板２１を回転させて選択された付加フィルターに対応して、色フィルター１０１ｂ、１０１ｃ、１０１ｄのいずれかを光源２４から患者１に至る光路中に移動させる。より具体的には、付加フィルター１００ｂが選択された場合には色フィルター１０１ｂを、付加フィルター１００ｃが選択された場合には色フィルター１０１ｃを、付加フィルター１００ｄが選択された場合には色フィルター１０１ｄを選択する。また、付加フィルターが配設されていない開口部１００ａが選択された場合には、色フィルターが配設されていない開口部１０１ａを選択する。 In parallel with this, the controller 41 drives the motor 22 of the light irradiation field changing mechanism based on the information of the selected additional filter, and rotates the second rotating plate 21 to correspond to the selected additional filter. Then, any one of the color filters 101b, 101c, and 101d is moved into the optical path from the light source 24 to the patient 1. More specifically, the color filter 101b is selected when the additional filter 100b is selected, the color filter 101c is selected when the additional filter 100c is selected, and the color filter 101d is selected when the additional filter 100d is selected. select. When the opening 100a in which no additional filter is disposed is selected, the opening 101a in which no color filter is disposed is selected.
　この状態でＸ線照射野を確認するために光源２４を点灯し、光照射野を形成する。この光照射野は患者１の体表面において、光により撮影領域を表示する。このときには、光照射野の光線の色が、選択された付加フィルターに対応する色となっている。すなわち、上述したように色フィルターが選択されることから、付加フィルター１００ｂが選択された場合には光照射野は緑色に、付加フィルター１００ｃが選択された場合には光照射野は黄色に、付加フィルター１００ｄが選択された場合には光照射野はオレンジ色になる。また、付加フィルターが配設されていない開口部１００ａが選択された場合には、光照射野は光源２４の色そのものとなる。 In this state, in order to confirm the X-ray irradiation field, the light source 24 is turned on to form a light irradiation field. This light irradiation field displays an imaging region with light on the body surface of the patient 1. At this time, the color of the light beam in the light irradiation field is a color corresponding to the selected additional filter. That is, since the color filter is selected as described above, the light field is green when the additional filter 100b is selected, and the light field is yellow when the additional filter 100c is selected. When the filter 100d is selected, the light irradiation field is orange. In addition, when the opening 100a in which no additional filter is provided is selected, the light irradiation field is the color of the light source 24 itself.
　このため、オペレータは、光照射野を利用してＸ線照射野を確認するときに、その光照射野の色に基づいて、現在付加フィルターが選択されているか否か、また、付加フィルターが選択されている場合には、現在選択されている付加フィルターの種類を確認することができる。これにより、選択されている付加フィルターの種類を容易かつ確実に認識することが可能となる。従って、誤った付加フィルターを使用してＸ線撮影がなされることを未然に防止することが可能となる。 Therefore, when the operator uses the light field to check the X-ray field, the operator selects whether or not the additional filter is currently selected based on the color of the light field. If it is, the type of the additional filter currently selected can be confirmed. As a result, the type of the selected additional filter can be easily and reliably recognized. Therefore, it is possible to prevent the X-ray imaging using the wrong additional filter.
　なお、光照射野の色と、そのときに選択されている付加フィルターの種類との対応付けをより確実とするため、患者１を載置するテーブル２に、光照射野の色と選択された付加フィルターの種類との対応関係を示す表を付設するようにしてもよい。 In addition, in order to make the correspondence between the color of the light irradiation field and the type of the additional filter selected at that time more reliable, the color of the light irradiation field is selected on the table 2 on which the patient 1 is placed. You may make it attach the table | surface which shows the correspondence with the kind of additional filter.
　次に、この発明の他の実施形態について説明する。図５は、この発明の第２実施形態に係る第２回転板３１の平面図である。 Next, another embodiment of the present invention will be described. FIG. 5 is a plan view of the second rotating plate 31 according to the second embodiment of the present invention.
　この第２回転板３１は、図４に示す第２回転板２１のかわりに使用されるものである。この第２回転板３１は、上述したモータ２２の駆動により軸３３を中心に回転する。この第２回転板３１には、４個の孔部が軸３３を中心とした放射状の位置に穿設されている。そして、これらの孔部のうち、三箇所の孔部には、各々異なるパターンを有する透光板よりなるパターンフィルター１０２ｂ、１０２ｃ、１０２ｄが配設されている。そして、残り一箇所の孔部は、パターンフィルターが配設されていない開口部１０２ａとなっている。ここで、図５に示すように、パターンフィルター１０２ｂには「Ｃｕ０．１」の文字が、パターンフィルター１０２ｃには「Ｃｕ０．２」の文字が、パターンフィルター１０２ｃには「Ｃｕ０．３」の文字が、各々、非透光性の塗料等で形成されている。 The second rotating plate 31 is used instead of the second rotating plate 21 shown in FIG. The second rotating plate 31 rotates around the shaft 33 by driving the motor 22 described above. In the second rotating plate 31, four holes are formed at radial positions around the shaft 33. Of these holes, pattern filters 102b, 102c, and 102d made of translucent plates having different patterns are disposed in three holes. The remaining one hole is an opening 102a where no pattern filter is provided. Here, as shown in FIG. 5, the character “Cu0.1” is displayed on the pattern filter 102b, the character “Cu0.2” is displayed on the pattern filter 102c, and the character “Cu0.3” is displayed on the pattern filter 102c. Are each formed of a non-translucent paint or the like.
　この第２回転板３１を利用して光照射野を形成した場合には、患者１の体表面において、光照射野に、選択された付加フィルターに対応する文字が表示される。すなわち、銅製の厚さ０．１ｍｍの軟線除去フィルターである付加フィルター１００ｂが選択された場合には光照射野に「Ｃｕ０．１」の文字が、銅製の厚さ０．２ｍｍの軟線除去フィルターである付加フィルター１００ｃが選択された場合には光照射野に「Ｃｕ０．２」の文字が、銅製の厚さ０．３ｍｍの軟線除去フィルターである付加フィルター１００ｄが選択された場合には光照射野に「Ｃｕ０．３」の文字が、各々、表示される。また、付加フィルターが配設されていない開口部１００ａが選択された場合には、光照射野には文字は表示されない。 When the light irradiation field is formed using the second rotating plate 31, characters corresponding to the selected additional filter are displayed on the light irradiation field on the body surface of the patient 1. That is, when the additional filter 100b which is a 0.1 mm thick soft wire removal filter made of copper is selected, the letter “Cu0.1” is used in the light irradiation field, and the 0.2 mm thick soft wire removal filter is made. When a certain additional filter 100c is selected, the character “Cu0.2” is selected in the light irradiation field, and when the additional filter 100d, which is a soft wire removal filter made of copper having a thickness of 0.3 mm, is selected. The characters “Cu0.3” are respectively displayed. In addition, when the opening 100a in which no additional filter is provided is selected, no characters are displayed in the light irradiation field.
　このため、オペレータは、光照射野を利用してＸ線照射野を確認するときに、その光照射野に表示される文字に基づいて、現在付加フィルターが選択されているか否か、また、付加フィルターが選択されている場合には、現在選択されている付加フィルターの種類を確認することができる。これにより、選択されている付加フィルターの種類を容易かつ確実に認識することが可能となる。従って、誤った付加フィルターを使用してＸ線撮影がなされることを未然に防止することが可能となる。 For this reason, when the operator uses the light field to check the X-ray field, whether or not the additional filter is currently selected based on the characters displayed in the light field When a filter is selected, the type of additional filter currently selected can be confirmed. As a result, the type of the selected additional filter can be easily and reliably recognized. Therefore, it is possible to prevent the X-ray imaging using the wrong additional filter.
　なお、第２回転板３１におけるパターンフィルターに表示するパターンとしては、上述したような文字以外に、例えば、「○」、「△」、「×」等の記号を表示してもよい。 In addition, as a pattern to be displayed on the pattern filter in the second rotating plate 31, for example, symbols such as “◯”, “Δ”, and “x” may be displayed in addition to the above-described characters.
　次に、この発明のさらに他の実施形態について説明する。図６は、この発明の第３実施形態に係るＸ線照射部３等の要部を示す概要図である。なお、図２に示す実施形態と同一の部材については、同一の符号を付して詳細な説明を省略する。 Next, still another embodiment of the present invention will be described. FIG. 6 is a schematic diagram showing the main parts of the X-ray irradiation unit 3 and the like according to the third embodiment of the present invention. In addition, about the same member as embodiment shown in FIG. 2, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
　上述した第１実施形態においては、選択された付加フィルターに対応させて色フィルターを選択することにより光照射野の光の色を変更し、上述した第２実施形態においては、選択された付加フィルターに対応させてパターンフィルターを選択することにより光照射野の光のパターンを変更している。これに対して、この第３実施形態においては、選択された付加フィルターに対応させて光照射野に照射される光の点滅状態を変更するようにしている。 In the first embodiment described above, the color of light in the light field is changed by selecting a color filter corresponding to the selected additional filter. In the second embodiment described above, the selected additional filter is selected. The light pattern of the light irradiation field is changed by selecting a pattern filter corresponding to the above. On the other hand, in the third embodiment, the blinking state of the light applied to the light irradiation field is changed in correspondence with the selected additional filter.
　すなわち、この第３実施形態においては、コントローラ４１が直接光源２４を制御することにより、選択された付加フィルターに対応させて光源２４の点灯時間と消灯時間の間隔を変更する。例えば、付加フィルター１００ｂが選択された場合には、光源２４を５秒点灯し１秒消灯する。付加フィルター１００ｃが選択された場合には、光源２４を３秒点灯し１秒消灯する。付加フィルター１００ｄが選択された場合には、光源２４を２秒点灯し２秒消灯する。また、付加フィルターが配設されていない開口部１００ａが選択された場合には、光源２４を連続点灯する。 That is, in the third embodiment, the controller 41 directly controls the light source 24 to change the interval between the lighting time and the light-off time of the light source 24 according to the selected additional filter. For example, when the additional filter 100b is selected, the light source 24 is turned on for 5 seconds and turned off for 1 second. When the additional filter 100c is selected, the light source 24 is turned on for 3 seconds and turned off for 1 second. When the additional filter 100d is selected, the light source 24 is turned on for 2 seconds and turned off for 2 seconds. When the opening 100a where no additional filter is disposed is selected, the light source 24 is continuously turned on.
　このため、オペレータは、光照射野を利用してＸ線照射野を確認するときに、その光照射野の点滅状態に基づいて、現在付加フィルターが選択されているか否か、また、付加フィルターが選択されている場合には、現在選択されている付加フィルターの種類を確認することができる。これにより、選択されている付加フィルターの種類を容易かつ確実に認識することが可能となる。従って、誤った付加フィルターを使用してＸ線撮影がなされることを未然に防止することが可能となる。 Therefore, when the operator uses the light field to check the X-ray field, whether or not the additional filter is currently selected based on the blinking state of the light field, If selected, the type of the additional filter currently selected can be confirmed. As a result, the type of the selected additional filter can be easily and reliably recognized. Therefore, it is possible to prevent the X-ray imaging using the wrong additional filter.
　なお、上述した実施形態においては、回転板１１および第２回転板２１、３１を使用して付加フィルター、色フィルターおよびパターンフィルターを選択使用しているが、回転板以外のフィルター移動機構を使用して付加フィルター、色フィルターおよびパターンフィルターを選択使用するようにしてもよい。 In the above-described embodiment, the additional filter, the color filter, and the pattern filter are selectively used using the rotary plate 11 and the second rotary plates 21 and 31, but a filter moving mechanism other than the rotary plate is used. Further, an additional filter, a color filter, and a pattern filter may be selectively used.
　１　　　　　患者
　２　　　　　テーブル
　３　　　　　Ｘ線照射部
　４　　　　　フラットパネルディテクタ
　６　　　　　可動絞り
　７　　　　　Ｘ線管
　１１　　　　回転板
　１２　　　　モータ
　２１　　　　第２回転板
　２２　　　　モータ
　２４　　　　光源
　２５　　　　ミラー
　３１　　　　第２回転板
　４１　　　　コントローラ
　４２　　　　操作部
　２３　　　　表示部
　１００ａ 開口部
　１００ｂ　　付加フィルター
　１００ｃ　　付加フィルター
　１００ｄ　　付加フィルター
　１０１ａ 開口部
　１０１ｂ　　色フィルター
　１０１ｃ　　色フィルター
　１０１ｄ　　色フィルター
　１０２ａ 開口部
　１０２ｂ　　パターンフィルター
　１０２ｃ　　パターンフィルター
　１０２ｄ　　パターンフィルター DESCRIPTION OF SYMBOLS 1 Patient 2 Table 3 X-ray irradiation part 4 Flat panel detector 6 Movable diaphragm 7 X-ray tube 11 Rotating plate 12 Motor 21 2nd rotating plate 22 Motor 24 Light source 25 Mirror 31 2nd rotating plate 41 Controller 42 Operation part 23 Display part 100a Opening 100b Additional filter 100c Additional filter 100d Additional filter 101a Opening 101b Color filter 101c Color filter 101d Color filter 102a Opening 102b Pattern filter 102c Pattern filter 102d Pattern filter

Claims (10)

  1. 　被検体に向けてＸ線を照射するＸ線管と、
    　前記Ｘ線管から照射され前記被検体を通過したＸ線を検出するＸ線検出部と、
    　前記Ｘ線管と前記被検体との間に配設され、前記Ｘ線管から前記被検体に向けて照射されるＸ線照射野を調整するコリメータ機構と、
    　を備えたＸ線撮影装置において、
    　前記コリメータ機構により調整されたＸ線照射野を視認するための光照射野を形成する光照射野形成手段と、
    　前記Ｘ線管から前記被検体に至るＸ線の照射領域と、このＸ線照射領域から離隔した領域との間で付加フィルターを移動させる付加フィルター移動手段と、
    　前記付加フィルター移動手段による付加フィルターの移動状態に応じて、前記光照射野形成手段による光照射野の光の状態を変更する光照射野変更手段と、
    　を備えたことを特徴とするＸ線撮影装置。     An X-ray tube that irradiates the subject with X-rays;
    An X-ray detector that detects X-rays irradiated from the X-ray tube and passed through the subject;
    A collimator mechanism that is disposed between the X-ray tube and the subject and adjusts an X-ray irradiation field irradiated from the X-ray tube toward the subject;
    In an X-ray imaging apparatus comprising:
    A light irradiation field forming means for forming a light irradiation field for visually recognizing the X-ray irradiation field adjusted by the collimator mechanism;
    An additional filter moving means for moving an additional filter between an X-ray irradiation area from the X-ray tube to the subject and an area separated from the X-ray irradiation area;
    Light irradiation field changing means for changing the light state of the light irradiation field by the light irradiation field forming means according to the movement state of the additional filter by the additional filter moving means,
    An X-ray imaging apparatus comprising:
  2. 　請求項１に記載のＸ線撮影装置において、
    　前記光照射野変更手段は、前記光照射野形成手段による光照射野の光の色、前記光照射野に照射される光のパターン、前記光照射野に照射される光の点滅状態のいずれか一つを変更するＸ線撮影装置。     The X-ray imaging apparatus according to claim 1,
    The light irradiation field changing means is any one of a color of light of the light irradiation field by the light irradiation field forming means, a pattern of light irradiated to the light irradiation field, and a blinking state of light irradiated to the light irradiation field. X-ray imaging device that changes one.
  3. 　請求項１に記載のＸ線撮影装置において、
    　前記付加フィルター移動手段は、複数種の付加フィルターを、前記Ｘ線管から前記被検体に至るＸ線の照射領域に選択的に移動させるＸ線撮影装置。     The X-ray imaging apparatus according to claim 1,
    The additional filter moving means is an X-ray imaging apparatus that selectively moves a plurality of types of additional filters to an X-ray irradiation region from the X-ray tube to the subject.
  4. 　請求項３に記載のＸ線撮影装置において、
    　前記付加フィルター移動手段は、
    　前記複数種の付加フィルターが配設された回転板と、
    　前記回転板を回転させるモータとを備え、
    　前記回転板を回転させることにより、前記回転板に配設された複数種の付加フィルターのうちの一つを、前記Ｘ線管から前記被検体に至るＸ線の照射領域に選択的に移動させるＸ線撮影装置。     The X-ray imaging apparatus according to claim 3,
    The additional filter moving means includes
    A rotating plate provided with the plurality of types of additional filters;
    A motor for rotating the rotating plate,
    By rotating the rotating plate, one of a plurality of kinds of additional filters disposed on the rotating plate is selectively moved to an X-ray irradiation region from the X-ray tube to the subject. X-ray imaging device.
  5. 　請求項３に記載のＸ線撮影装置において、
    　前記光照射野変更手段は、
    　光源と、
    　前記光源と前記被検体との間に配設され、互いに異なる色を有する透光板から構成される複数の色フィルターを、前記光源から前記被検体に至る光路中に選択的に移動させる色フィルター移動手段と、
    　を備えるＸ線撮影装置。     The X-ray imaging apparatus according to claim 3,
    The light irradiation field changing means is
    A light source;
    A color filter that is disposed between the light source and the subject and selectively moves a plurality of color filters composed of translucent plates having different colors in an optical path from the light source to the subject. Transportation means;
    An X-ray imaging apparatus comprising:
  6. 　請求項５に記載のＸ線撮影装置において、
    　前記光照射野変更手段は、
    　互いに異なる色を有する透光板から構成される複数の色フィルターが配設された第２回転板と、
    　前記第２回転板を回転させるモータとを備え、
    　前記第２回転板を回転させることにより、前記第２回転板に配設された複数の色フィルターのうちの一つを、前記光源から前記被検体に至る光路中に選択的に移動させるＸ線撮影装置。     The X-ray imaging apparatus according to claim 5,
    The light irradiation field changing means is
    A second rotating plate provided with a plurality of color filters composed of translucent plates having different colors;
    A motor for rotating the second rotating plate,
    X-ray that selectively moves one of a plurality of color filters disposed on the second rotating plate in the optical path from the light source to the subject by rotating the second rotating plate. Shooting device.
  7. 　請求項３に記載のＸ線撮影装置において、
    　前記光照射野変更手段は、
    　光源と、
    　前記光源と前記被検体との間に配設され、互いに異なるパターンを有する透光板から構成される複数のパターンフィルターを、前記光源から前記被検体に至る光路中に選択的に移動させるパターンフィルター移動手段と、
    　を備えるＸ線撮影装置。     The X-ray imaging apparatus according to claim 3,
    The light irradiation field changing means is
    A light source;
    A pattern filter that is arranged between the light source and the subject and selectively moves a plurality of pattern filters composed of translucent plates having different patterns in an optical path from the light source to the subject. Transportation means;
    An X-ray imaging apparatus comprising:
  8. 　請求項７に記載のＸ線撮影装置において、
    　前記光照射野変更手段は、
    　互いに異なるパターンを有する透光板から構成される複数のパターンフィルターが配設された第２回転板と、
    　前記第２回転板を回転させるモータとを備え、
    　前記第２回転板を回転させることにより、前記第２回転板に配設された複数のパターンフィルターのうちの一つを、前記光源から前記被検体に至る光路中に選択的に移動させるＸ線撮影装置。     The X-ray imaging apparatus according to claim 7,
    The light irradiation field changing means is
    A second rotating plate provided with a plurality of pattern filters composed of translucent plates having different patterns;
    A motor for rotating the second rotating plate,
    X-ray that selectively moves one of a plurality of pattern filters disposed on the second rotating plate in the optical path from the light source to the subject by rotating the second rotating plate. Shooting device.
  9. 　被検体に向けてＸ線を照射するＸ線管と、
    　前記Ｘ線管から照射され前記被検体を通過したＸ線を検出するＸ線検出部と、
    　前記Ｘ線管と前記被検体との間に配設され、前記Ｘ線管から前記被検体に向けて照射されるＸ線照射野を調整するコリメータ機構と、
    　を備えたＸ線撮影装置において、
    　複数種の付加フィルターが配設された回転板と、前記回転板を回転させるモータとを備え、前記回転板を回転させることにより、前記回転板に配設された複数種の付加フィルターのうちの一つを、前記Ｘ線管から前記被検体に至るＸ線の照射領域に選択的に移動させる付加フィルター移動手段と、
    　互いに異なる色を有する透光板から構成される複数の色フィルターが配設された第２回転板と、前記第２回転板を回転させるモータとを備え、前記コリメータ機構により調整されたＸ線照射野を視認するための光照射野を形成するとともに、前記第２回転板を回転させることにより、前記第２回転板に配設された複数の色フィルターのうちの一つを、前記光源から前記被検体に至る光路中に選択的に移動させる光照射野形成手段と、を備え、
    　前記回転板と前記第２回転板とを関連づけて回転させることにより、前記付加フィルター移動手段による前記付加フィルターの前記Ｘ線照射領域に対する配置状況に応じて、前記光照射野形成手段により形成される光照射野の光の色を変更することを特徴とするＸ線撮影装置。     An X-ray tube that irradiates the subject with X-rays;
    An X-ray detector that detects X-rays irradiated from the X-ray tube and passed through the subject;
    A collimator mechanism that is disposed between the X-ray tube and the subject and adjusts an X-ray irradiation field irradiated from the X-ray tube toward the subject;
    In an X-ray imaging apparatus comprising:
    A rotary plate having a plurality of types of additional filters, and a motor for rotating the rotary plate; An additional filter moving means for selectively moving one to an X-ray irradiation region from the X-ray tube to the subject;
    X-ray irradiation adjusted by the collimator mechanism, comprising: a second rotating plate provided with a plurality of color filters composed of translucent plates having different colors; and a motor for rotating the second rotating plate. A light irradiation field for visually recognizing a field is formed, and by rotating the second rotating plate, one of a plurality of color filters disposed on the second rotating plate is removed from the light source. A light irradiation field forming means for selectively moving in the optical path to the subject,
    By rotating the rotary plate and the second rotary plate in association with each other, the optical filter is formed by the light irradiation field forming unit according to the arrangement state of the additional filter with respect to the X-ray irradiation region by the additional filter moving unit. An X-ray imaging apparatus characterized by changing the color of light in a light irradiation field.
  10. 　被検体に向けてＸ線を照射するＸ線管と、
    　前記Ｘ線管から照射され前記被検体を通過したＸ線を検出するＸ線検出部と、
    　前記Ｘ線管と前記被検体との間に配設され、前記Ｘ線管から前記被検体に向けて照射されるＸ線照射野を調整するコリメータ機構と、
    　を備えたＸ線撮影装置において、
    　複数種の付加フィルターが配設された回転板と、前記回転板を回転させるモータとを備え、前記回転板を回転させることにより、前記回転板に配設された複数種の付加フィルターのうちの一つを、前記Ｘ線管から前記被検体に至るＸ線の照射領域に選択的に移動させる付加フィルター移動手段と、
    　互いに異なるパターンを有する透光板から構成される複数のパターンフィルターが配設された第２回転板と、前記第２回転板を回転させるモータとを備え、前記コリメータ機構により調整されたＸ線照射野を視認するための光照射野を形成するとともに、前記第２回転板を回転させることにより、前記第２回転板に配設された複数のパターンフィルターのうちの一つを、前記光源から前記被検体に至る光路中に選択的に移動させる光照射野形成手段と、を備え、
    　前記回転板と前記第２回転板とを関連づけて回転させることにより、前記付加フィルター移動手段による前記付加フィルターの前記Ｘ線照射領域に対する配置状況に応じて、前記光照射野形成手段により形成される光照射野の光のパターンを変更することを特徴とするＸ線撮影装置。


    　     An X-ray tube that irradiates the subject with X-rays;
    An X-ray detector that detects X-rays irradiated from the X-ray tube and passed through the subject;
    A collimator mechanism that is disposed between the X-ray tube and the subject and adjusts an X-ray irradiation field irradiated from the X-ray tube toward the subject;
    In an X-ray imaging apparatus comprising:
    A rotary plate having a plurality of types of additional filters, and a motor for rotating the rotary plate; An additional filter moving means for selectively moving one to an X-ray irradiation region from the X-ray tube to the subject;
    X-ray irradiation adjusted by the collimator mechanism, comprising: a second rotating plate provided with a plurality of pattern filters composed of translucent plates having different patterns; and a motor for rotating the second rotating plate. A light irradiation field for visually recognizing a field is formed, and one of a plurality of pattern filters disposed on the second rotating plate is rotated from the light source by rotating the second rotating plate. A light irradiation field forming means for selectively moving in the optical path to the subject,
    By rotating the rotary plate and the second rotary plate in association with each other, the optical filter is formed by the light irradiation field forming unit according to the arrangement state of the additional filter with respect to the X-ray irradiation region by the additional filter moving unit. An X-ray imaging apparatus characterized by changing a light pattern of a light irradiation field.


PCT/JP2010/050546 2010-01-19 2010-01-19 X-ray imaging device WO2011089686A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108618793A (en) * 2017-03-22 2018-10-09 富士胶片株式会社 Mammography apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1176219A (en) * 1997-07-09 1999-03-23 Siemens Ag X-ray shielding apparatus for medical equipment
JP2003116847A (en) * 2001-10-12 2003-04-22 Hitachi Medical Corp X-ray system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1176219A (en) * 1997-07-09 1999-03-23 Siemens Ag X-ray shielding apparatus for medical equipment
JP2003116847A (en) * 2001-10-12 2003-04-22 Hitachi Medical Corp X-ray system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108618793A (en) * 2017-03-22 2018-10-09 富士胶片株式会社 Mammography apparatus

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