JPS6051776B2 - X-ray generator - Google Patents
X-ray generatorInfo
- Publication number
- JPS6051776B2 JPS6051776B2 JP53018308A JP1830878A JPS6051776B2 JP S6051776 B2 JPS6051776 B2 JP S6051776B2 JP 53018308 A JP53018308 A JP 53018308A JP 1830878 A JP1830878 A JP 1830878A JP S6051776 B2 JPS6051776 B2 JP S6051776B2
- Authority
- JP
- Japan
- Prior art keywords
- target
- ray
- base material
- ray generator
- electron beam
- 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.)
- Expired
Links
- 238000010894 electron beam technology Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Landscapes
- Apparatus For Radiation Diagnosis (AREA)
Description
【発明の詳細な説明】
本発明はＸ線発生装置に関し、特にＸ線断層像を得る
装置（ＣＴ装置）に使用して最適なＸ線発生装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an X-ray generator, and more particularly to an X-ray generator that is most suitable for use in an apparatus for obtaining X-ray tomographic images (CT apparatus).
一般にＣＴ装置においてはＸ線管とＸ線検出器とを被
写体に対し機械的に平行移動および、もしくは回転移動
させるようにしていることから、被写体の任意切面の断
層像のための一連のデータを得るには数秒乃至は数十秒
費される。Generally, in a CT device, the X-ray tube and X-ray detector are mechanically moved in parallel and/or rotationally relative to the object, so a series of data for tomographic images of arbitrary cross sections of the object can be generated. It takes several seconds to tens of seconds to obtain this.
したがつて人体の心臓等の時間的に変化する臓器の断層
像を得ることは極めて困難である。このため例えば、特
開昭５２−１０７７８丹に示されたＣＴ装置においては
環状又はその一部をなすＸ線発生ターゲット上で電子線
を間歇的あるいは連続的に走査することにより、数十分
の一秒乃至数百分の一秒で必要なデータの取得を可能と
している。ところで上述した環状又はその一部をなすタ
ーゲットは直径が２ｍにも及び、このような大型のわん
曲したターゲットの製作は極めて困難であると共に高価
となる。更にターゲットの一部が電子線の照射等によつ
て破損した場合、交換が容易でない。 本発明は上述し
た点に鑑みてなされたものであり、ターゲットをターゲ
ット基材と該基材上に固定された多数のターゲット片よ
り構成しており、製作が容易で且つ安価なＸ線発生装置
を提供する。Therefore, it is extremely difficult to obtain tomographic images of organs such as the human heart that change over time. For this reason, for example, in the CT apparatus disclosed in Japanese Patent Application Laid-Open No. 10778/1983, an electron beam is scanned intermittently or continuously on an X-ray generating target that is in the form of a ring or a part of the ring. It is possible to obtain the necessary data in one second to several hundredths of a second. By the way, the above-mentioned ring-shaped target or a part thereof has a diameter of up to 2 m, and manufacturing such a large curved target is extremely difficult and expensive. Furthermore, if a part of the target is damaged due to electron beam irradiation or the like, it is not easy to replace it. The present invention has been made in view of the above-mentioned points, and provides an easy-to-manufacture and inexpensive X-ray generator in which the target is composed of a target base material and a large number of target pieces fixed on the base material. I will provide a.
以下本発明の実施例を添付図面に基づき詳説する。 Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
第１図は本発明に基つくＸ線発生装置を使用したＣＴ
装置を示しており、１は釣鐘状のＸ線発生装置カラムで
ある。Figure 1 shows CT using the X-ray generator based on the present invention.
The apparatus is shown in which 1 is a bell-shaped X-ray generator column.
該カラム１の一端には電子銃２が設けられており、又他
端にはリング状のＸ線発生ターゲット３が設けられてい
る。該電子銃２から発生し加速された電子線は収束レン
ズ４によつて適宜収束された後、第１偏向コイル５によ
つて大きく偏向され、更に第２偏向コイル６によつて偏
向されて該ターゲット３上に照射される。ここで該第１
偏向コイル５に供給される偏向信号を変化させればそれ
に伴つて電子線の偏向方向も変化し、リング状ターゲッ
ト３の異つた点に電子線が照射されることになる。該タ
ーゲツトヘの電子線の照射に伴い該ターゲットから発生
したＸ線は窓部７を通り、更に図示していないが適宜な
Ｘ線制限手段によつて一定方向に拡がりを有する扇状Ｘ
線となつて、支持台８上に載置された被写体９に照射さ
れる。該被写体９を透過したＸ線は窓部７に接近してリ
ング状に設けられた多数のＸ線検出素子より成るＸ線検
出器１０によつて検出される。 上述した如き構成にお
いて第１偏向コイル５に供給される偏向信号を例えば電
子計算機（図示せず）によつて制御すれば、電子線はタ
ーゲット３上の特定の多数の点に間歇的に照射される。An electron gun 2 is provided at one end of the column 1, and a ring-shaped X-ray generating target 3 is provided at the other end. The electron beam generated from the electron gun 2 and accelerated is appropriately focused by a converging lens 4, then largely deflected by a first deflection coil 5, and further deflected by a second deflection coil 6. The target 3 is irradiated. Here, the first
If the deflection signal supplied to the deflection coil 5 is changed, the deflection direction of the electron beam will also change accordingly, and different points on the ring-shaped target 3 will be irradiated with the electron beam. When the target is irradiated with an electron beam, the X-rays generated from the target pass through the window 7, and are further controlled by an appropriate X-ray restriction means (not shown) to form a fan-shaped X that spreads in a certain direction.
The object 9 placed on the support stand 8 is irradiated in the form of a line. The X-rays that have passed through the object 9 are detected by an X-ray detector 10 that is arranged in a ring shape close to the window 7 and is composed of a large number of X-ray detection elements. In the configuration as described above, if the deflection signal supplied to the first deflection coil 5 is controlled by, for example, an electronic computer (not shown), the electron beam is intermittently irradiated onto a number of specific points on the target 3. Ru.
この結果被写体９には特定のそみ角毎に扇状Ｘ線が照射
され、例えば３６００の範囲で１扇毎に被写体に扇状Ｘ
線が照射され、夫々のＸ線はＸ線検出器１０によつて検
出される。該検出された信号は電子計算機によつて演算
処理され、被写体９の任意切面の断層像が得られる。こ
こで上述したＸ線発生ターゲット３は第２図に示す如く
、例えば銅によつて形成されたリング状の基材１１と該
基材１１の内面に例えばネジ止めされたタングステン等
より成る多数のターゲット片１２によつて構成される。As a result, the subject 9 is irradiated with fan-shaped X-rays at each specific diagonal angle. For example, the subject 9 is irradiated with fan-shaped
X-rays are emitted and each X-ray is detected by an X-ray detector 10. The detected signals are processed by an electronic computer, and a tomographic image of an arbitrary cross section of the subject 9 is obtained. As shown in FIG. 2, the X-ray generating target 3 described above includes a ring-shaped base material 11 made of copper, for example, and a large number of tungsten materials screwed to the inner surface of the base material 11, for example. It is composed of a target piece 12.
該ターゲット片１２の厚さは数？であり、又該ターゲッ
ト片１２の夫々の幅は該ターゲット片に間歇的に照射さ
れる電子線の角度間隔に応じて決められる。例えば３６
０のの範囲を１応毎に扇状Ｘ線を発生させる場合該基材
１１の内径をＤとすれば、該ターゲット片１１の夫々の
幅は路次式を満足するように選ばれる。したがつて、例
えば基材１１の内径が２ｒｒＬ，であれば該ターゲット
片の幅は約３４ｗ＄ｔあるいはそれの整数倍にされる。What is the thickness of the target piece 12? The width of each target piece 12 is determined according to the angular interval of the electron beams that are intermittently irradiated onto the target piece. For example 36
When fan-shaped X-rays are generated every time in the range of 0, if the inner diameter of the base material 11 is D, then the width of each target piece 11 is selected so as to satisfy the path equation. Therefore, for example, if the inner diameter of the base material 11 is 2rrL, the width of the target piece is about 34w$t or an integral multiple thereof.
このように該ターゲット片の幅ノを設定すれば、電子線
をターゲットに１ト毎に正確に照射しても、各ターゲッ
ト片の境界部分には電子線が照射されず、一定強度のＸ
線が常に被写体に照射されくことになる。以上本発明を
詳説したが本発明はターゲット片を固定させるようにし
ているため、ターゲット材を直径２ｒｒ１，にも及ぶリ
ング状に形成した従来のターゲットに比較して製作が極
めて容易となり、又製造コストも大幅に低減することが
できる。If the width of the target piece is set in this way, even if the electron beam is irradiated onto the target one by one accurately, the boundary between each target piece will not be irradiated with the electron beam.
The line will always be illuminated on the subject. The present invention has been described in detail above, and since the target piece is fixed in the present invention, it is extremely easy to manufacture compared to the conventional target in which the target material is formed into a ring shape with a diameter of 2rr1. Costs can also be significantly reduced.
更に本発明において特定のターゲット片が破損したとし
ても該破損したターゲット片のみを交換すれば良く交換
の際の手間及び費用を軽減できる。本発明は上述した実
施例に限定されることなく幾多の変形が可能である。例
えばターゲット基材を必ずしもリング状とする必要はな
く半円状てあつても良い、又ターゲット基材の内面は曲
面状でなくとも、多数の平面の合成すなわち、多角面状
であつても良い。Furthermore, in the present invention, even if a specific target piece is damaged, it is sufficient to replace only the damaged target piece, and the effort and cost for replacement can be reduced. The present invention is not limited to the embodiments described above and can be modified in many ways. For example, the target base material does not necessarily have to be ring-shaped and may be semicircular, and the inner surface of the target base material does not have to be curved, but may be a combination of many planes, that is, polygonal. .
第１図は本発明に基つくＸ線発生装置を使用したＸ線断
層像を得る装置を示す図、第２図は本発明に基づくＸ線
発生ターゲットの一実施例を示す図である。
１・・・・・・Ｘ線発生装置カラム、２・・・・・・電
子銃、３・・Ｘ線発生ターゲット、４・・・・・・収束
コイル、５，６・・・・・・偏向コイル、７・・・・・
・窓部、８・・・・・・支持台、９・・・・・・被写体
、１０・・・・Ｘ線検出器、１１・・・・・・ターゲッ
ト基材、１２・・・・・・ターゲット片。FIG. 1 is a diagram showing an apparatus for obtaining an X-ray tomographic image using an X-ray generating device based on the present invention, and FIG. 2 is a diagram showing an embodiment of an X-ray generating target based on the present invention. 1... X-ray generator column, 2... Electron gun, 3... X-ray generation target, 4... Convergence coil, 5, 6... Deflection coil, 7...
・Window part, 8... Support stand, 9... Subject, 10... X-ray detector, 11... Target base material, 12...・Target piece.
Claims (1)
し、該ターゲット上の電子線照射位置を間歇的に移動さ
せるようにしたＸ線発生装置において、該ターゲットは
ターゲット基材と、固定された多数のターゲット片より
成ることを特徴とするＸ線発生装置。1. In an X-ray generation device having an X-ray generation target that is annular or a part thereof, and in which the electron beam irradiation position on the target is moved intermittently, the target is fixed to the target base material. An X-ray generator comprising a large number of target pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53018308A JPS6051776B2 (en) | 1978-02-20 | 1978-02-20 | X-ray generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53018308A JPS6051776B2 (en) | 1978-02-20 | 1978-02-20 | X-ray generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54111296A JPS54111296A (en) | 1979-08-31 |
| JPS6051776B2 true JPS6051776B2 (en) | 1985-11-15 |
Family
ID=11967977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53018308A Expired JPS6051776B2 (en) | 1978-02-20 | 1978-02-20 | X-ray generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6051776B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5990399A (en) * | 1982-09-07 | 1984-05-24 | イメ−ジング・サイエンス・アソシエイツ・リミテツド・パ−トナ−シツプ | X-ray generating method and device |
| CA3071104C (en) | 2017-03-31 | 2023-10-03 | Sensus Healthcare, Inc. | Three-dimensional beam forming x-ray source |
| CA3083780C (en) * | 2017-12-04 | 2022-05-10 | Ecolab Usa Inc. | Floor care tools |
| US11672491B2 (en) | 2018-03-30 | 2023-06-13 | Empyrean Medical Systems, Inc. | Validation of therapeutic radiation treatment |
-
1978
- 1978-02-20 JP JP53018308A patent/JPS6051776B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54111296A (en) | 1979-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4045672A (en) | Apparatus for tomography comprising a pin hole for forming a microbeam of x-rays | |
| US5550889A (en) | Alignment of an x-ray tube focal spot using a deflection coil | |
| US4866745A (en) | Ultrahigh speed X-ray CT scanner | |
| US4135095A (en) | Apparatus for obtaining an X-ray image | |
| US4150293A (en) | Tomographic apparatus for producing transverse layer images | |
| US4075489A (en) | Method and apparatus involving the generation of x-rays | |
| US10082473B2 (en) | X-ray filtration | |
| JPH04312450A (en) | Computer-aided tomography | |
| GB1583053A (en) | Apparatus for tomography | |
| JPH04250143A (en) | Computer-aided tomograph | |
| US4193001A (en) | Tomographic apparatus for producing transverse layer images | |
| GB1598058A (en) | Apparatus for tomography using penetrating radiation | |
| JPS6051776B2 (en) | X-ray generator | |
| GB1579265A (en) | Tomography | |
| JPS6283772A (en) | X-ray image former | |
| JPS631698B2 (en) | ||
| JPS6146136B2 (en) | ||
| JPH04317635A (en) | Computer-aided tomography | |
| JPH0562205U (en) | X-ray imaging device for X-ray images | |
| JPH0223945A (en) | Computer tomograph | |
| JP4792187B2 (en) | Deriving cross-sectional distribution from object dataset | |
| GB1564309A (en) | Apparatus for obtaining an x-ray image of a slice plane ofan object | |
| JPH0576524A (en) | X-ray ct device | |
| JPH01318946A (en) | Computer tomograph | |
| GB1603593A (en) | Device for computed tomography |