JPS625335A - X-ray irradiation apparatus - Google Patents
X-ray irradiation apparatusInfo
- Publication number
- JPS625335A JPS625335A JP60144239A JP14423985A JPS625335A JP S625335 A JPS625335 A JP S625335A JP 60144239 A JP60144239 A JP 60144239A JP 14423985 A JP14423985 A JP 14423985A JP S625335 A JPS625335 A JP S625335A
- Authority
- JP
- Japan
- Prior art keywords
- radiation source
- radiation
- element array
- distance
- ray
- 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.)
- Pending
Links
- 230000005855 radiation Effects 0.000 claims description 31
- 239000004065 semiconductor Substances 0.000 description 8
- 230000007704 transition Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、Ｘ線診断装置、非破壊検査用Ｘ線検査装置等
に用い得るＸ線照射装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an X-ray irradiation device that can be used in an X-ray diagnostic device, an X-ray inspection device for nondestructive testing, and the like.
従来の技術
従来、Ｘ線装置にはＸ線写真が用いられてきたが、感度
、被ばく線量等から放射線感応素子、Ｓｔ、Ｇｏ、Ｃｄ
Ｔｓ等（以下半導体センサーと呼ぶ）を用いたコンピュ
ータートモグラフィー装置が開発されてきている。この
半導体センサーを用いた装置では、Ｘ線写真と比べ被ば
ぐ線量は１／１０〜１／１００に低減され、コントラス
ト分解能も良好で、今後、微少な病変や患部を識別でき
るものとして期待されている。このような半導体センサ
ーを用いた装置は、第３図に示す様に一列に半導体セン
サー４１を組み込み、放射線源４２のＸ線焦、点４３を
中心として、放射線源４２と半導体センサー４１を一体
的に首振シ動作させる装置や、図示していないが、放射
線源と半導体センサーをベッドに対し、平行に移動させ
る装置等がある。しかし平行移動は首振シ動作に比べ放
射線源の移動量が大きいことや、装置の大型化等の問題
があシ、首振り動作の装置の方が構造的に小型化できる
。Conventional technology Conventionally, X-ray photography has been used in X-ray equipment, but due to sensitivity, exposure dose, etc., radiation sensitive elements, St, Go, Cd
Computerized tomography devices using Ts and the like (hereinafter referred to as semiconductor sensors) have been developed. The device using this semiconductor sensor reduces the exposure dose to 1/10 to 1/100 compared to X-ray photography, and has good contrast resolution, so it is expected to be able to identify minute lesions and affected areas in the future. ing. A device using such a semiconductor sensor incorporates semiconductor sensors 41 in a row as shown in FIG. There are devices that move the head in a oscillating motion, and devices that move a radiation source and a semiconductor sensor parallel to the bed (not shown). However, parallel movement has problems such as the amount of movement of the radiation source being larger than that in oscillating motion, and the device becoming larger.However, a device using oscillating motion can be structurally more compact.
発明が解決しようとする問題点
首振多動作型装置の欠点は、放射線源４２を被写体に近
づけ、更に高解像度のＸ線像を得ようとした時、半導体
センサー４１も放射線源と同じ様に上下するため、被写
体と半導体センサー４１の距離が変化することで、高解
像度のＸ線像が得られないことである。すなわち、Ｘ線
の減衰は距離が離れる程大きく、近づく程小さいからで
ある。Problems to be Solved by the Invention The disadvantage of the head-shaking multi-action device is that when trying to bring the radiation source 42 closer to the subject and obtain a higher resolution Since the object moves up and down, the distance between the object and the semiconductor sensor 41 changes, making it impossible to obtain a high-resolution X-ray image. That is, the attenuation of X-rays increases as the distance increases, and decreases as the distance approaches.
又、半導体センサー４１を上下移動させずに放射線源４
２のみ上下移動させた場合、首振り動作では、半導体セ
ンサー４１の摺動半径と、放射線源４２の距離が中心以
外の摺動位置では異なるため、正確な情報が得られない
。更にその差を計算等で補正する方法が考えられるが、
補正であって正確な情報とでは誤差が発生する。Moreover, the radiation source 4 can be removed without moving the semiconductor sensor 41 up or down.
If only 2 is moved up and down, accurate information cannot be obtained in the swinging motion because the sliding radius of the semiconductor sensor 41 and the distance to the radiation source 42 are different at sliding positions other than the center. Furthermore, there are ways to correct the difference through calculations, etc.
Errors will occur if this is correction and accurate information.
問題点を解決するための手段
本発明は以上の様な問題点を解決するために、曲率半径
の異なる複数のガイドレールを有するガイドブロックと
、Ｘ線焦点と素子アレイの距離を曲率半径とするガイド
レールに素子アレイを摺動させるべく前記ガイドブロッ
クを移行させる移行手段を備えてなるものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a guide block having a plurality of guide rails with different radii of curvature, and uses the distance between the X-ray focal point and the element array as the radius of curvature. The device includes a transition means for shifting the guide block to slide the element array on the guide rail.
作 用
上記手段により、放射線源が移動するとＸ線′焦点と素
子アレイの距離が変化するが、移行手段によシガイドブ
ロックを移動させ、Ｘ線焦点と素子アレイの距離を曲率
半径とするガイドレールに素子アレイを摺動させること
ができる。Operation: With the above means, when the radiation source moves, the distance between the X-ray focal point and the element array changes, but the guide block is moved by the shifting means and the guide whose radius of curvature is the distance between the X-ray focal point and the element array. The element array can be slid on the rail.
実施例 本発明の一実施例を第１図、第２図において説明する。Example An embodiment of the present invention will be described with reference to FIGS. 1 and 2.
放射線に感応する素子を直線状または曲線弧状に連続的
に配設してなる素子アレイ１はトレイ２に収納され、ガ
イドブロック３に形成された複数のガイドレール１９，
２０，２１を摺動可能な構成となっている。ガイドブロ
ック３の各ガイドレール１９，２０．２１の形状は、放
射線源４のＸ線焦点５を中心とした半径を曲率半径とす
る円弧状の形状をしており、素子アレイ１がガイドブロ
ック３のガイドレール１９，２０．２１に案内され摺動
する場合、常に放射線源４と相対位置にある。支柱６の
一端には放射線源４が回動自在に固定されており回動用
モーター７とベルト８で連結している。この回動用モー
ター７で放射線源４は首振多動作する。又、支柱６には
ラック９が取りつけられ、上下動用モーター１０の歯車
１１と係合しておシ、放射線源４は上下動可能で被写体
１２に近づけたシ遠ざけたシできる。この時、放射線源
４が１３．１４．１５の各位置にある時、放射線源４を
首振り動作する場合は、Ｘ線焦点５から素子アレイ１の
距離はそれぞれ１６，１７゜１８となシ、素子アレイ１
は距離１８，１７゜１８を曲率半径とする円弧上を移動
しなければならない。この半径距離１６．１７．１８に
対応したガイドレール１９，２０，２１がガイドブロッ
ク３に形成されている。もちろん、この実施例では３本
のレールであるが、放射線源４の位置により何本でも良
い。このガイドブロック３は上下スーライドレール２２
と係合されてお９、モーター２３により上下にスライド
する。又、ガイドレール１９．２０，２１の端部には、
移行ブロック２４゜２５が設けられ、ロータリーソレノ
イド２６．２７に接続されている。例えば放射線源４が
位置１６にあるとき、トレイ２の車輪２８はガイドレー
ル２１にはまり込み、移動テーブル２９（ボールネジと
、モーターで構成されたもの）によシガイドレール２１
を摺動し、次に放射線源４を位置１４にした時、−ロー
タリーソレノイド２６が動作し、移行プロワ２４が回動
し、ガイドレール２１と２０に連結路ができ、車輪２８
はガイドレール２０へ移行できる。この様にして、放射
線源４の各位置１３．１４，１５に対応したガイドレー
ル１９゜２０．２１を設定することにより、常にＸ線焦
点６を中心とした等距離で素子アレイ１を摺動する ゛
ことができる。An element array 1 in which elements sensitive to radiation are continuously arranged in a straight line or curved arc shape is housed in a tray 2, and a plurality of guide rails 19 formed on a guide block 3,
20 and 21 are configured to be slidable. Each of the guide rails 19, 20, 21 of the guide block 3 has an arc shape with a radius of curvature centered on the X-ray focal point 5 of the radiation source 4, and the element array 1 is connected to the guide block 3. When the radiation source 4 slides while being guided by the guide rails 19, 20, 21 of the radiation source 4, it is always in a position relative to the radiation source 4. A radiation source 4 is rotatably fixed to one end of the support column 6 and connected to a rotation motor 7 by a belt 8. The rotation motor 7 causes the radiation source 4 to rotate in many directions. Further, a rack 9 is attached to the support column 6, and is engaged with a gear 11 of a vertical movement motor 10, so that the radiation source 4 can be moved up and down, and can be moved close to or away from the subject 12. At this time, when the radiation source 4 is at each position of 13, 14, and 15, and the radiation source 4 is oscillated, the distance from the X-ray focal point 5 to the element array 1 is 16 and 17 degrees, respectively. , element array 1
must move on an arc whose radius of curvature is a distance of 18,17°18. Guide rails 19, 20, 21 corresponding to this radial distance 16, 17, 18 are formed on the guide block 3. Of course, in this embodiment there are three rails, but any number of rails may be used depending on the position of the radiation source 4. This guide block 3 has upper and lower slide rails 22
9, and is slid up and down by the motor 23. Moreover, at the ends of the guide rails 19, 20, 21,
A transition block 24.25 is provided and connected to a rotary solenoid 26.27. For example, when the radiation source 4 is at position 16, the wheels 28 of the tray 2 fit into the guide rail 21, and the guide rail 21 is moved by the moving table 29 (consisting of a ball screw and a motor).
When the radiation source 4 is moved to position 14, the rotary solenoid 26 is operated, the transfer blower 24 is rotated, a connecting path is created between the guide rails 21 and 20, and the wheel 28 is moved.
can be moved to the guide rail 20. In this way, by setting the guide rails 19, 20, 21 corresponding to each position 13, 14, 15 of the radiation source 4, the element array 1 is always slid at the same distance from the X-ray focal point 6. I can do it.
発明の効果
上記の様に本発明によれば、放射線源を被写体に近づけ
、より鮮明なＸ線像を得る場合でも、首振り動作される
放射線源と素子アレイの相対距離は常に一定で、正確な
Ｘ線像が得られる。Effects of the Invention As described above, according to the present invention, even when the radiation source is brought closer to the subject to obtain a clearer X-ray image, the relative distance between the oscillating radiation source and the element array is always constant and accurate. A clear X-ray image can be obtained.
第１図は本発明の一実施例を示すＸ線照射装置の正面図
、第２図は同装置の要部分解斜視図、第３図は従来のＸ
線照射装置の斜視図である。
１・・・・・・素子アレイ、３・・・・・・ガイドブロ
ック、４・・・・・・放射線源、５・・・・・・Ｘ線焦
点、１９，２０，２１・・・・・・カイトレール。
代理人の氏名 弁理士 中 尾 敏 男 １１か１名第
１図
第 ２ 図
第３図FIG. 1 is a front view of an X-ray irradiation device showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of the main parts of the same device, and FIG. 3 is a conventional
It is a perspective view of a line irradiation device. 1... Element array, 3... Guide block, 4... Radiation source, 5... X-ray focus, 19, 20, 21... ...Kiterail. Name of agent: Patent attorney Toshio Nakao 11 or 1 person Figure 1 Figure 2 Figure 3
Claims (1)
連続的に配設した素子アレイに、放射線源から被写体を
透過してその被写体の透過像を含む放射線を照射し、前
記放射線と前記素子アレイとを相対的に移動させて放射
線画像を検知する装置にあって、前記放射線源と前記被
写体の距離を変える移動手段と、前記放射線源と前記素
子アレイをともにＸ線焦点を中心として、首振りを行な
う駆動手段と、曲率半径の異なる複数のガイドレールを
有するガイドブロックと、Ｘ線焦点と素子アレイの距離
を曲率半径とするガイドレールに素子アレイを摺動させ
るべく前記ガイドブロックを移動させる移行手段を備え
たＸ線照射装置。(1) An element array in which radiation-sensitive elements are continuously arranged in a linear or curved arc shape is irradiated with radiation from a radiation source that passes through a subject and includes a transmitted image of the subject, and the radiation and the elements The device detects a radiation image by relatively moving the radiation source and the object, the device comprising: a moving means for changing the distance between the radiation source and the subject; a drive means for swinging; a guide block having a plurality of guide rails having different radii of curvature; and moving the guide block to slide the element array on the guide rail having a radius of curvature equal to the distance between the X-ray focus and the element array. X-ray irradiation device equipped with transfer means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60144239A JPS625335A (en) | 1985-07-01 | 1985-07-01 | X-ray irradiation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60144239A JPS625335A (en) | 1985-07-01 | 1985-07-01 | X-ray irradiation apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS625335A true JPS625335A (en) | 1987-01-12 |
Family
ID=15357482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60144239A Pending JPS625335A (en) | 1985-07-01 | 1985-07-01 | X-ray irradiation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS625335A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015534874A (en) * | 2013-08-15 | 2015-12-07 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | X-ray equipment |
-
1985
- 1985-07-01 JP JP60144239A patent/JPS625335A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015534874A (en) * | 2013-08-15 | 2015-12-07 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | X-ray equipment |
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