JPS63186200A - Sensitivity compensating intensifying screen - Google Patents
Sensitivity compensating intensifying screenInfo
- Publication number
- JPS63186200A JPS63186200A JP62018986A JP1898687A JPS63186200A JP S63186200 A JPS63186200 A JP S63186200A JP 62018986 A JP62018986 A JP 62018986A JP 1898687 A JP1898687 A JP 1898687A JP S63186200 A JPS63186200 A JP S63186200A
- Authority
- JP
- Japan
- Prior art keywords
- light
- intensifying screen
- layer
- light absorption
- sensitivity compensation
- 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.)
- Granted
Links
- 230000035945 sensitivity Effects 0.000 title claims description 20
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 18
- 230000031700 light absorption Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000000206 photolithography Methods 0.000 claims description 5
- 238000002834 transmittance Methods 0.000 claims description 5
- 238000007639 printing Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000003745 diagnosis Methods 0.000 description 5
- 238000011976 chest X-ray Methods 0.000 description 4
- 238000002601 radiography Methods 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 238000007646 gravure printing Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 210000000621 bronchi Anatomy 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 239000001052 yellow pigment Substances 0.000 description 1
Landscapes
- Luminescent Compositions (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Conversion Of X-Rays Into Visible Images (AREA)
- Silver Salt Photography Or Processing Solution Therefor (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】
［発明の目的ｊ
（産業上の利用分野）
゛本発明は、放射線写真の口形時に使用される感度補償
増感紙に係り、さらに詳しくは感度補償部の輪郭が写真
に写し出されることのない感度補償□増感紙に関する・
。′
（従来の技術）
一般に、放射゛線′綴影に際して、撮影系の感度を向上
させるために、恐光性フィルムを２枚の増感紙の間に密
着させて員影する゛ことが行われている゛。Detailed Description of the Invention [Objective of the Invention (Field of Industrial Application)] The present invention relates to a sensitivity compensation intensifying screen used for mouth shaping in radiography, and more specifically, Sensitivity compensation that will not be reflected in the image □Regarding the intensifying screen
. (Prior art) In general, in order to improve the sensitivity of the imaging system when performing radiographic imaging, it is common practice to place a photophobic film in close contact between two intensifying screens to create an image. It is said.
この増感紙は、支持体上に蛍光体層とこれを保護する比
教的薄い保護膜とを順に設けたもので構成されている。This intensifying screen consists of a phosphor layer and a thin protective film that protects the phosphor layer provided on a support in this order.
ところでこのような増感紙においては、同一平面内の蛍
光体分布がほぼ一様であるため、これを用いて例えば胸
部疾患の診断のための鞠ぶ（Ｘ線撮影°を行った場合、
Ｘ線の透過度の異なる部分を１枚のＸ線写真で操影する
ことは困難であった。By the way, in such an intensifying screen, the phosphor distribution within the same plane is almost uniform, so it can be used for example when performing X-ray photography for diagnosing chest diseases.
It has been difficult to manipulate areas with different levels of X-ray penetration using a single X-ray photograph.
このなめ近年、例えば１枚の胸部Ｘ線写真中にＸ線吸収
の面端に異なる肺野と気管、気管支、を柱等とを良好な
コントラストで撮像することを可能にするため、蛍光体
層からの発光を吸収する光吸収層を例えば保護膜上に部
分的に設け、臓器−のＸ線の吸収産の違いを補うように
した感度補償増感紙が使用されている。In recent years, for example, in order to make it possible to image different lung fields, trachea, bronchi, columns, etc. with good contrast at the edge of the X-ray absorption plane in a single chest X-ray photograph, a phosphor layer has been developed. A sensitivity compensation intensifying screen is used in which a light absorption layer that absorbs light emitted from the organ is partially provided, for example, on a protective film to compensate for differences in the absorption of X-rays from the organ.
このような感度補償増感紙は、光吸収層として蛍光体か
らの発光色と補色の関係にある色の顔料等をＸ線の透過
量の多い部分に対応するように、例えば保護膜とするフ
ィルム上に印刷したものである。またこの光吸収層の輪
郭が写真上に写しだされないように、光吸収部から光透
過部への濃度変化を階調的にさせて用いている。Such a sensitivity compensation intensifying screen uses, as a light absorption layer, a pigment of a color complementary to the color emitted from the phosphor, for example, as a protective film, so as to correspond to the areas where a large amount of X-rays are transmitted. It is printed on film. Furthermore, in order to prevent the outline of the light-absorbing layer from appearing on the photograph, the density is changed from the light-absorbing portion to the light-transmitting portion in a gradation manner.
従来、この階調変化の方法としては、濃度を変えて着色
した複数のフィルムを光吸収部よら光透過部に向かって
順次濃度が薄くなゐように重ね介せて撮影したものを写
真製版用原版として使用し、グラビア印刷等の印刷技法
により形成することにより行われていた。Traditionally, this method of changing gradation has been achieved by layering multiple films colored at different densities so that the densities gradually become lighter from the light-absorbing area to the light-transmitting area, and photographing them for photoengraving. This was done by using it as an original plate and forming it using printing techniques such as gravure printing.
（発明が解決しようとする問題点）
しかしながらこのような方法で光吸収層の階調変化を形
成したものは、印刷段階における濃度変化の境界を肉眼
では識別できない程度に階調変化させることができても
、実際に放射線撮影を行ってみるとこの境界が筋状、パ
ターンとして写しだされてしまうため、診断時の障害と
なるという問題があった。(Problem to be Solved by the Invention) However, in the case where the gradation change of the light absorption layer is formed by such a method, the gradation change cannot be made to such an extent that the boundary of the density change in the printing stage cannot be discerned with the naked eye. However, when radiography is actually performed, these boundaries appear as streaks or patterns, which poses a problem during diagnosis.
本発明はこのような問題点を解決するためになされたも
ので、光吸収層の濃度変化の境界線が撮像されることな
く感度補償を行い、診断に支障のない放射線撮影を行う
ことのできる感度補償増感紙を提供することを目的とす
る。The present invention has been made to solve these problems, and it is possible to perform sensitivity compensation without imaging the boundary line of the density change of the light absorption layer, and to perform radiography without interfering with diagnosis. The purpose of the present invention is to provide a sensitivity compensation intensifying screen.
［発明の構成］
（問題点を解決するための手段）
本発明の感度補償増感紙は、支持体と、この支持体上に
設けられた蛍光体層と、この蛍光体層上に形成された保
護膜と、前記蛍光体層からの発光を吸収する光吸収層と
から構成されており、前記光吸収層の光透過率が光吸収
部と光透過部の境界において連続的に変化していること
を特徴としている。[Structure of the Invention] (Means for Solving the Problems) The sensitivity compensation intensifying screen of the present invention comprises a support, a phosphor layer provided on the support, and a phosphor layer formed on the phosphor layer. and a light absorption layer that absorbs light emitted from the phosphor layer, and the light transmittance of the light absorption layer changes continuously at the boundary between the light absorption part and the light transmission part. It is characterized by the presence of
本発明における光吸収層の形成方法としては、撮影対象
部位となる標準的体型者の放射線写真を例えば焦点位置
をずらして撮影し、これを複数回繰返し行うことによっ
て、当初の放射線写真に写っている微細部や骨部等の辺
縁が消え・るまでぼかしたものを写真製版用原版として
使用して、例えばグラビア印刷のような印刷波５法によ
り、蛍光体からの発光色と補色の関係にある色の顔料等
をフィルム素材上に印刷する方法が適しており、この方
法によって光吸収層における光吸収部から光透過部への
濃度変化、すなわち光透過率−の変化が連続的になる。The method for forming the light-absorbing layer in the present invention is to take a radiograph of a person with a standard body type, which is the part to be imaged, for example, by shifting the focus position, and repeating this several times, so that the radiograph does not appear in the original radiograph. The relationship between the color emitted from the phosphor and the complementary color can be determined by using the printing wave 5 method such as gravure printing, for example, by blurring the edges of minute parts and bone parts until they disappear or disappearing as an original plate for photolithography. A suitable method is to print pigments, etc. of a certain color on the film material, and by this method, the density change from the light-absorbing part to the light-transmitting part in the light-absorbing layer, that is, the change in light transmittance, becomes continuous. .
また、本発明の光吸収層は、光吸収層を設けたフィルム
を保護膜として用いてもよいし、またこれを蛍光体層内
に埋め込んで使用してもよい。Furthermore, the light absorption layer of the present invention may be used by using a film provided with the light absorption layer as a protective film, or by embedding it in a phosphor layer.
（作 用）
本発明の感度補償増感紙において、光吸収層を撮影対象
部位となる標準的体型者の放射線写真のぼかしたものを
写真製版用の原版として使用して形成しているので、光
吸収層の光透過率が放射線写真そのものに従い光吸収部
と光透過部の境界において連続的に変化させることがで
き、これによって撮影した写真上に筋状のパターンが写
ることを防止することができる。(Function) In the sensitivity compensation intensifying screen of the present invention, the light-absorbing layer is formed using a blurred radiograph of a person with a standard body type, which is the part to be imaged, as an original for photolithography. The light transmittance of the light-absorbing layer can be changed continuously at the boundary between the light-absorbing part and the light-transmitting part according to the radiograph itself, and this can prevent streak-like patterns from appearing on the photograph. can.
（実施例）
次に本発明の一実施例について説明する実施例
蛍光体としてタングステン酸カルシウムを使用して以下
の方法により胸部Ｘ線写真用の感度補償増感紙を製造し
た。(Example) Next, an example of the present invention will be described. Example Calcium tungstate was used as the phosphor to manufacture a sensitivity compensation intensifying screen for chest X-ray photography by the following method.
まず、標準的体形者の胸部Ｘ線写真を使用して、これを
焦点位置をずらしてｖ１影する０次いでこの焦点値でを
ずらした写真を再度焦点位置をずらして撮影する。そし
て当初のＸ線写真に写っていた微細部や骨部辺縁が消え
ていることを確認して、これを写真製版用原版とする０
次にこの写真製版用原版を使用し、タングステン酸カル
シウムの発光を吸収する黄色顔料をグラビア印刷により
厚さ１０μｍのポリエステルフィルムからなる保Ｍｍ上
に印刷し、光吸収層を形成した。First, a chest X-ray photograph of a person with a standard body shape is used, and the focal position is shifted and a v1 shadow is taken.Then, a photograph is taken with this focal value shifted and the focal position shifted again. After confirming that the fine parts and bone edges that appeared in the original X-ray photograph have disappeared, this is used as the original plate for photolithography.
Next, using this original plate for photolithography, a yellow pigment that absorbs the light emitted by calcium tungstate was printed by gravure printing on a support Mm made of a polyester film having a thickness of 10 μm to form a light absorption layer.
次に、タングステン酸カルシウム２０重量部とバインダ
としてポリビニルブチラール２重量部とを酢酸ブチル７
８重１部に混合してスラリーとし、このスラリーを光吸
収層の形成されている保護膜の光吸収層と反対側に塗布
し、乾燥させて厚さ約１００μｍｎの蛍光体層を形成し
た。Next, 20 parts by weight of calcium tungstate and 2 parts by weight of polyvinyl butyral as a binder were mixed with 7 parts by weight of butyl acetate.
Eight parts were mixed to form a slurry, and this slurry was applied to the side opposite to the light absorption layer of the protective film on which the light absorption layer was formed, and dried to form a phosphor layer with a thickness of about 100 μm.
しかる後この蛍光体層の上に厚さ２５０μｍのポリエス
テルフィルムからなる支持体を貼着させて感度補償増感
紙を製造した。Thereafter, a support made of a polyester film having a thickness of 250 μm was adhered onto the phosphor layer to produce a sensitivity compensation intensifying screen.
このようにして得た感度補償増感紙をＸ線フィルムと重
ねてカセツテに入れ、Ｘ線を照射して応変分布を調べた
ところ光吸収層を設けた部分は他の部分の約５０％であ
り、感度補償増感紙として十分であることがわかった。The sensitivity compensation intensifying screen obtained in this way was placed in a cassette with X-ray film placed over it, and the response distribution was investigated by irradiating it with X-rays.The area where the light absorption layer was provided was about 50% of the other area. It was found that this is sufficient as a sensitivity compensation intensifying screen.
またこの感度補償増感紙を使用して、実際に胸部のＸ線
写真を撮影したところ、診断の障害となるような筋状パ
ターンのない良好なものであった。Furthermore, when an X-ray photograph of the chest was actually taken using this sensitivity compensation intensifying screen, it was found to be good, with no streaky pattern that would impede diagnosis.
なお、この実施例では胸部Ｘ線写真について説明したが
、本発明はこれに限定されるものではなく、頭部のよう
な他の部位の診断用のＸ線様影にも使用することができ
る。Although this embodiment describes a chest X-ray photograph, the present invention is not limited thereto, and can also be used for X-ray-like shadows for diagnosis of other parts such as the head. .
［発明の効果］
以上説明したように本発明の感度補償増感紙によれば、
光吸収層の光透過率を光吸収部と光透過部の境界におい
て連続的°に変化させているので、撮影した放射線写真
に光吸収層の濃度変化による境界線が筋状パターンとし
て写ることがなく感度補償を行うことができ、これによ
って診断時に支障のない放射線撮影を行うことができる
。[Effects of the Invention] As explained above, according to the sensitivity compensation intensifying screen of the present invention,
Since the light transmittance of the light-absorbing layer is continuously changed at the boundary between the light-absorbing part and the light-transmitting part, the boundary line due to the change in the density of the light-absorbing layer will not appear as a striped pattern in the radiograph taken. Sensitivity compensation can be performed without any problems, and thereby radiography can be performed without any problems during diagnosis.
Claims (3)
、この蛍光体層上に形成された保護膜と、前記蛍光体層
からの発光を吸収する光吸収層とから構成されている感
度補償増感紙において、前記光吸収層の光透過率が光吸
収部と光透過部の境界において連続的に変化しているこ
とを特徴とする感度補償増感紙。(1) Consisting of a support, a phosphor layer provided on the support, a protective film formed on the phosphor layer, and a light absorption layer that absorbs light emitted from the phosphor layer. A sensitivity compensation intensifying screen characterized in that the light transmittance of the light absorption layer changes continuously at the boundary between the light absorption part and the light transmission part.
真のぼかしたものを写真製版用原版として用いて印刷技
法により形成されている特許請求の範囲第１項記載の感
度補償増感紙。(2) The sensitivity compensation intensifying screen according to claim 1, wherein the light-absorbing layer is formed by a printing technique using a blurred radiograph of a human body as a photolithography original plate. .
れている特許請求の範囲第１項または第２項記載の感度
補償増感紙。(3) The sensitivity compensation intensifying screen according to claim 1 or 2, wherein the light absorption layer is formed on the protective film or in the phosphor layer.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62018986A JP2614219B2 (en) | 1987-01-29 | 1987-01-29 | Manufacturing method of sensitivity compensation intensifying screen |
| US07/148,958 US4982098A (en) | 1987-01-29 | 1988-01-27 | Speed compensated intensifying screen for radiography |
| KR1019880000786A KR910007464B1 (en) | 1987-01-29 | 1988-01-29 | Speed compensated intensifying screen for radio graphy |
| DE8888300801T DE3872533T2 (en) | 1987-01-29 | 1988-01-29 | RADIOGRAPHIC REINFORCEMENT SCREEN WITH COMPENSATED SPEED. |
| EP88300801A EP0277041B1 (en) | 1987-01-29 | 1988-01-29 | Speed compensated intensifying screen for radiography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62018986A JP2614219B2 (en) | 1987-01-29 | 1987-01-29 | Manufacturing method of sensitivity compensation intensifying screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63186200A true JPS63186200A (en) | 1988-08-01 |
| JP2614219B2 JP2614219B2 (en) | 1997-05-28 |
Family
ID=11986909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62018986A Expired - Lifetime JP2614219B2 (en) | 1987-01-29 | 1987-01-29 | Manufacturing method of sensitivity compensation intensifying screen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2614219B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58161900A (en) * | 1982-03-19 | 1983-09-26 | キヤノン株式会社 | Fluorescence screen with sensitivity change and its manufacture |
-
1987
- 1987-01-29 JP JP62018986A patent/JP2614219B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58161900A (en) * | 1982-03-19 | 1983-09-26 | キヤノン株式会社 | Fluorescence screen with sensitivity change and its manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2614219B2 (en) | 1997-05-28 |
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