JPH032599A - Stimulable phosphor plate - Google Patents
Stimulable phosphor plateInfo
- Publication number
- JPH032599A JPH032599A JP13557389A JP13557389A JPH032599A JP H032599 A JPH032599 A JP H032599A JP 13557389 A JP13557389 A JP 13557389A JP 13557389 A JP13557389 A JP 13557389A JP H032599 A JPH032599 A JP H032599A
- Authority
- JP
- Japan
- Prior art keywords
- light
- excitation light
- stimulable phosphor
- hole
- stimulable
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000003566 sealing material Substances 0.000 claims abstract description 15
- 230000005284 excitation Effects 0.000 claims description 54
- 238000000149 argon plasma sintering Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000001678 irradiating effect Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 230000004936 stimulating effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 22
- 229910001220 stainless steel Inorganic materials 0.000 description 12
- 239000010935 stainless steel Substances 0.000 description 12
- 239000010410 layer Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000005530 etching Methods 0.000 description 6
- 238000004020 luminiscence type Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 2
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 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
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
Landscapes
- Conversion Of X-Rays Into Visible Images (AREA)
Abstract
Description
【発明の詳細な説明】
［概 要］
励起光、又は励起光及び輝尽蛍光体光に対する散乱防止
手段を用いた輝尽蛍光光に関し、励起光、輝尽蛍光光に
対する散乱性を除くことを目的とし、
ほぼ等しい大きさで励起光不透過性に加工された穴形成
部内に輝尽蛍光体を埋設した微***を交差方向の各交差
位置に設けて構成し、又交差方向の各交差位置毎に、ほ
ぼ等しい大きさで励起光不透過性に加工された穴形成部
と、該穴形成部の光透過側に配置された光透過性封止材
と、穴形底部形成基板の光透過側の面とは反対側の面に
配置された封止材と、前記光透過性封止材と前記封止材
とによって封止された前記穴形成部内に充填された輝尽
蛍光体とで構成した。[Detailed Description of the Invention] [Summary] Regarding stimulated fluorescent light using a scattering prevention means for excitation light or excitation light and stimulated fluorescent light, it is possible to eliminate the scattering property of the excitation light and stimulated fluorescent light. In order to achieve this goal, micro holes with approximately the same size and stimulable phosphor embedded within hole-forming portions processed to be opaque to excitation light are provided at each intersecting position in the intersecting direction, and at each intersecting position in the intersecting direction. For each, there is a hole-forming part that is processed to be opaque to excitation light and has a substantially equal size, a light-transmitting sealing material placed on the light-transmitting side of the hole-forming part, and a light-transmitting part of the hole-shaped bottom forming substrate. a sealing material disposed on a surface opposite to the side surface, and a stimulable phosphor filled in the hole forming portion sealed by the light-transmissive sealing material and the sealing material. Configured.
（産業上の利用分野〕
本発明は、励起光又は励起光及び輝尽蛍光光に対する散
乱防止手段を用いた輝尽蛍光体板に関する。(Industrial Application Field) The present invention relates to a stimulable phosphor plate using scattering prevention means for excitation light or excitation light and stimulated fluorescent light.
Ｘ線画像のような放射線画像は、病気診断用などに多く
用いられている。このＸ線画像を得るために、被写体を
透過したＸ線を蛍光体層（蛍光スクリーン）に照射し、
そこから可視光を生じさせてこの可視光を、銀塩を使用
したフィルムに照射して現像した、いわゆる放射線写真
が利用されているが、この従来の銀塩感光剤をシート状
に塗布したフィルムに間接、或いは直接に放射線の二次
元像を記録するＸ線撮像装置に代わるシステムとして、
高感度、高解像度のＸ線撮像システムが開発されている
。Radiographic images such as X-ray images are often used for disease diagnosis. In order to obtain this X-ray image, X-rays that have passed through the subject are irradiated onto a phosphor layer (fluorescent screen).
The so-called radiography is used in which visible light is generated and developed by irradiating this visible light onto a film using silver salt, but this conventional film is coated with a silver salt photosensitive agent in the form of a sheet. As a system to replace the X-ray imaging device that records two-dimensional images of radiation indirectly or directly,
High sensitivity, high resolution X-ray imaging systems have been developed.
その高感度、高解像度のＸｖＡ撮像装置は、蓄積性蛍光
体を使用するシステムである。このような方式に関して
の基本的な方式は、米国特許箱３゜８５９．５２７号に
詳しく述べられている。このシステムに使用される蛍光
体は、Ｘ線などの放射線のエネルギーを受けると、その
エネルギーの部を蓄積する。この状態は比較的安定であ
り、しばらく或いは長時間にわたって保持される。この
状態にある蛍光体に、励起光として働く第一の光を照射
すると、蓄積されているエネルギーが第二の光となって
放出される。この時、第一の光は、可視光に限らず、赤
外線から紫外線の範囲の広い波長の光が使われる。ただ
し、その選択は、使われる蛍光体材料によって異なる。The high sensitivity, high resolution XvA imager is a system that uses stimulable phosphors. The basic approach for such a system is described in detail in US Pat. No. 3,859,527. When the phosphors used in this system receive the energy of radiation, such as X-rays, they store a portion of that energy. This state is relatively stable and is maintained for a while or for a long time. When the phosphor in this state is irradiated with the first light that acts as excitation light, the stored energy is released as second light. At this time, the first light is not limited to visible light, but has a wide wavelength range from infrared to ultraviolet. However, the choice depends on the phosphor material used.
第二の光も赤外線のものから紫外線のものまで各種ある
。その違いも、使用する蛍光体材料に依存する。この第
二の電磁波を受光し、光電変換器で電気信号に変換した
後ディジタル信号化してディジクル画像情報として得る
ようにして成るものである。There are various types of secondary light, ranging from infrared to ultraviolet light. The difference also depends on the phosphor material used. This second electromagnetic wave is received, converted into an electric signal by a photoelectric converter, and then converted into a digital signal to obtain digital image information.
従来用いられてきた輝尽蛍光体層は第一の光すなわち励
起光に対しても、第二の光すなわち輝尽発光光に対して
も透明ではなく、強度の散乱現象を示していた。そのた
め１画素と同じ程度或いは以下の大きさの励起光光束を
輝尽蛍光体層に照射しても励起光光束は非常に幅広く散
乱し、例えば０．３ｍｍの厚さの蛍光体層に直径０．１
ｍＭ１の励起光光束を照射すると照射面と反対の面にお
いては直径１ ｍｍ以上の大きさ、場合によっては直径
３ｍｍ以上にまで広がってしまうことが観測されている
（第３図の（Ａ）参照）。このような励起光の散乱は、
上記例の場合に、若し１画素の大きさが０．１ｍｍ角の
大きさであるとすると、１画素を読み取るとき隣接する
１００乃至９００画素の部分の情報の一部を誤差として
取り込む結果、得られる画像の空間分解能が著しく劣化
したものとなり著しく不鮮鋭な画像となることは当然で
ある。この励起光散乱の現象を緩和する試みは幾つかな
されている。Conventionally used stimulable phosphor layers were not transparent to either the first light, ie, excitation light, or the second light, ie, stimulated emission light, and exhibited a strong scattering phenomenon. Therefore, even if a photostimulated phosphor layer is irradiated with an excitation light beam of the same size or smaller than that of one pixel, the excitation light beam will be scattered very widely. .1
It has been observed that when an excitation light beam of mM1 is irradiated, the beam spreads to a diameter of 1 mm or more on the opposite side of the irradiated surface, and in some cases to a diameter of 3 mm or more (see (A) in Figure 3). ). Such scattering of excitation light is
In the case of the above example, if the size of one pixel is 0.1 mm square, when reading one pixel, part of the information of the adjacent 100 to 900 pixels is taken in as an error. Naturally, the spatial resolution of the resulting image is significantly degraded, resulting in an extremely unsharp image. Several attempts have been made to alleviate this phenomenon of excitation light scattering.
たとえば特開昭５５−１４６４４７号公報、特開昭５８
−５８５００号公報に示されている蛍光体層の中に白色
微粒子を分解させる方法、あるいは特開昭６１−１７０
７４０号公報に示されている励起光を吸収するような着
色剤を添加する方法、あるいは特開昭６２−２１．１．
６００号公報に示されているような輝尽蛍光体の支持基
板に着色剤或いは白色微粒子を形成する方法などがある
。このような方法は従来のＸ線フィルムの増感紙に対し
ても為されてきた鮮鋭度改良のための方法ではあるが、
しかし、励起光散乱を完全に除去する方法でないことは
明らかである。また、特開昭６０１７１５００号公報な
どに示されている輝尽蛍光体の層の中に垂直方向に亀裂
を形成させたり、ハニカム構造を形成する方法或いは基
板表面に凹凸パターンやモザイクパターンを形成して、
散乱を防ごうとする試みもある。しかし、これらの方法
も完全に励起光の散乱を防止するものではなく、得られ
た画像にモアレパターンを形成させる可能性を生じさせ
る。For example, JP-A-55-146447, JP-A-58
- A method of decomposing white fine particles in a phosphor layer as shown in Japanese Patent Publication No. 58500, or Japanese Patent Application Laid-Open No. 61-170
A method of adding a coloring agent that absorbs excitation light as shown in Japanese Patent Publication No. 740, or Japanese Patent Application Laid-open No. 62-21.1.
There is a method of forming a coloring agent or white fine particles on a supporting substrate of a photostimulable phosphor, as shown in Japanese Patent No. 600. Although this method has been used to improve the sharpness of conventional X-ray film intensifying screens,
However, it is clear that this is not a method that completely eliminates excitation light scattering. Furthermore, methods such as forming vertical cracks in a layer of stimulable phosphor or forming a honeycomb structure, as shown in Japanese Patent Application Laid-Open No. 60171500, or forming an uneven pattern or a mosaic pattern on the substrate surface, are also available. hand,
There are also attempts to prevent scattering. However, these methods do not completely prevent the scattering of excitation light, and there is a possibility that a moiré pattern will be formed in the obtained image.
本発明は斯かる技術的課題に鑑みて創作されたもので、
励起光、輝尽蛍光光に対する散乱性のない輝尽蛍光体板
を提供することをその目的とする。The present invention was created in view of such technical problems,
The object of the present invention is to provide a photostimulated phosphor plate that does not scatter excitation light and stimulated fluorescent light.
第１図は本発明の原理構造図を示す。この図に示すよう
に、本発明はほぼ等しい大きさで励起光不透過性に加工
された穴形成部２内に輝尽蛍光体６を埋設した微***２
６を交差方向の各交差位置に設けて構成され、又交差方
向の各交差位置毎に、ほぼ等しい大きさで励起光不透過
性に加工された穴形成部２と、該穴形成部２の光透過側
に配置された光透過性封止材４と、前記穴形酸部形成基
板の光透過側の面とは反対側の面に配置された封止材５
と、前記光透過性封止材４と前記封止材５とによって封
止された前記穴形成部２内に充填された輝尽蛍光体６と
で構成される。FIG. 1 shows a principle structural diagram of the present invention. As shown in this figure, the present invention has a micro-hole 2 in which a stimulable phosphor 6 is embedded in a hole-forming part 2 of approximately the same size and processed to be opaque to excitation light.
6 at each intersecting position in the intersecting direction, and at each intersecting position in the intersecting direction, there is a hole forming part 2 of approximately the same size and processed to be opaque to excitation light, and a A light-transmitting sealing material 4 disposed on the light-transmitting side, and a sealing material 5 disposed on the surface opposite to the light-transmitting side of the hole-shaped acid part forming substrate.
and a stimulable phosphor 6 filled in the hole forming portion 2 sealed by the light-transmissive sealing material 4 and the sealing material 5.
被写体にＸ線を照射されてこれを透過した被写体パター
ンのＸ線エネルギーは、輝尽蛍光体板に規則的に配列さ
れている微***内２６の輝尽蛍光体６の各々に分布して
蓄積される。このエネルギー分布パターンを有する輝尽
蛍光体板に対し励起光を走査し、そこにエネルギー分布
パターンとして形成されている被写体パターンを電気信
号パターンを取り出してその利用に供される。The X-ray energy of the object pattern transmitted through the X-rays irradiated onto the object is distributed and accumulated in each of the photostimulable phosphors 6 in the micro holes 26 regularly arranged on the photostimulable phosphor plate. Ru. Excitation light is scanned against the stimulable phosphor plate having this energy distribution pattern, and an electrical signal pattern is extracted from the subject pattern formed there as an energy distribution pattern and used.
その電気信号パターンを出力する際に、輝尽蛍光体板の
規則配列された微***２６をその交差方向の１つの方向
に沿って励起光が走査される。その励起光を照射される
輝尽蛍光体は励起光不透過性の穴壁２の中に入っている
から、散乱することはない。従って、空間分解能が低下
されるのを完全に防止することができる。When outputting the electrical signal pattern, excitation light is scanned along one of the intersecting directions of the regularly arranged microholes 26 of the stimulable phosphor plate. Since the stimulable phosphor irradiated with the excitation light is inside the hole wall 2 that is not transparent to the excitation light, it is not scattered. Therefore, it is possible to completely prevent the spatial resolution from decreasing.
〔実施例］
第２図を参照して本発明の輝尽蛍光体板の製造方法を以
下に説明する。この製造方法はエツチングによる方法で
ある。[Example] A method for manufacturing a photostimulable phosphor plate of the present invention will be described below with reference to FIG. This manufacturing method is an etching method.
先ず、薄いステンレス板に微***を形成するためのレジ
ストパターン（第４図参照）を公知のＣＡＤ技法を用い
て製作する。そのパターンの穴対応部分の大きさは微小
穴の大きさより小さ目とする。このレジストパターンを
用いてステンレス板２０Ｉ面にマスク２２．２３を形成
する（第２図の（］）参照）。２４はマスク２２．２３
のマスク穴である。形成されたマスク穴２４を介してス
テンレス板２０ヘエツチング剤を作用させて第２図の（
２）に示すように微***２６を形成する。２８は穴壁で
ある。その穴壁板面域２９にスクリーン印刷によって接
着剤３０を塗布する（第２図の（３））。First, a resist pattern (see FIG. 4) for forming microholes in a thin stainless steel plate is manufactured using a known CAD technique. The size of the hole-corresponding portion of the pattern is made smaller than the size of the minute hole. Using this resist pattern, masks 22 and 23 are formed on the surface of the stainless steel plate 20I (see ( ) in FIG. 2). 24 is mask 22.23
It is a hole in the mask. A etching agent is applied to the stainless steel plate 20 through the mask hole 24 formed, as shown in FIG.
2) A microhole 26 is formed as shown in FIG. 28 is a hole wall. An adhesive 30 is applied to the hole wall plate surface area 29 by screen printing ((3) in FIG. 2).
この接着剤３０の塗布は、第２図の（４）に示すように
、間に挟まれるステンレス板２０２についてはその両面
に、又挟むステンレス板２０．．２０．については、そ
のステンレス板２０２を挟むステンレス板面にのみ施さ
れる。第２図の（４）において、３２はガラス板である
。接着処理完了後に、重合された３枚のステンレス板２
０Ｉ乃至２０３に形成されている、より深くなっている
微***２６内に粉末の輝尽蛍光体６ （ＢａＦＢｒ ：
Ｂｕ”）を充填した後（第２図の（５）参照）、その
上にポリエステルの保護層３４（第２図の（６）参照）
を形成して輝尽蛍光体板を製造した（第４図参照前記微
***２６の壁面は光学面を有し、励起光及び輝尽発光光
を効率よく反射する。これにより、微***の壁面を介し
て励起光は透過せず、励起光照射によって輝尽蛍光体か
ら放出される輝尽蛍光光は効率よく集光することができ
る（第３図の（Ｂ）参照）。従って、画像の空間分解能
の低下を】 ０
防止することができる。又、上述のような重合により、
励起光照射で輝尽蛍光体から放出される輝尽蛍光光量の
増大が図れる。それによる空間分解能の低下はない。As shown in FIG. 2 (4), the adhesive 30 is applied to both sides of the stainless steel plate 202 sandwiched between the stainless steel plates 202 and 20. ．． 20. This is applied only to the surfaces of the stainless steel plates that sandwich the stainless steel plate 202. In (4) of FIG. 2, 32 is a glass plate. After the adhesion process is completed, the three polymerized stainless steel plates 2
Powdered stimulable phosphor 6 (BaFBr:
After filling (see (5) in Figure 2), a protective layer 34 of polyester (see (6) in Figure 2) is applied.
(see Figure 4) The wall surface of the microhole 26 has an optical surface and efficiently reflects the excitation light and the stimulated luminescence light. The excitation light does not pass through the phosphor, and the stimulated fluorescent light emitted from the stimulable phosphor by excitation light irradiation can be efficiently collected (see (B) in Figure 3). [0] Decrease in spatial resolution can be prevented.Also, by polymerization as described above,
The amount of stimulated fluorescence light emitted from the photostimulated phosphor can be increased by irradiation with excitation light. There is no decrease in spatial resolution due to this.
なお、前記実施例における薄いステンレス板は、薄い他
の金属板若しくはプラスチック板等としてもよい。薄い
金属板あるいはプラスチック板等に多数の微***を形成
する方法は、エツチングによる方法２機械加工による方
法など種々あるが、その方法による限定はない。Note that the thin stainless steel plate in the above embodiment may be replaced with another thin metal plate, a plastic plate, or the like. There are various methods for forming a large number of microholes in a thin metal plate, plastic plate, etc., such as etching method 2 and machining method, but the method is not limited to these methods.
微***の形成方法には、制限はないが、材料及び形成手
段によって、形成される微***２６は多様な形をとる（
第５図及び第６図参照）。たとえば厚さ０．１ｍｍのス
テンレス板に直径０．０８ｍｍの穴を縦横のピッチがそ
れぞれ０．１柵でエツチングによって形成したとすると
、穴の形状は完全にストレートなものとなることはなく
、エツチングの方法たとえば片面からのみエツチングす
る場合は片方が大きくなり、両面からエツチングする場
合は中央がくびれだ形状になったり、あるいはマスクの
穴の形成の仕方によっては別の形状にもなる。あるいは
放電加工によって穴を形成するときには比較的ストレー
トな形状になるなど、多様な形状を取り得るが、形状に
無関係に本発明を実施することは可能である。微***の
形状は特に限定されないが、しかし、実際には円形、楕
円状、正方形。There is no limit to the method of forming the microholes, but the microholes 26 formed can take various shapes depending on the material and forming means.
(See Figures 5 and 6). For example, if a hole with a diameter of 0.08 mm is formed in a stainless steel plate with a thickness of 0.1 mm by etching with a vertical and horizontal pitch of 0.1, the shape of the hole will not be completely straight; For example, if etching is done from only one side, one side will be larger; if etching is done from both sides, the center will be constricted, or depending on how the hole in the mask is formed, it will become a different shape. Alternatively, when a hole is formed by electrical discharge machining, it can take a variety of shapes, such as a relatively straight shape, but the present invention can be practiced regardless of the shape. The shape of the microhole is not particularly limited, but in practice it may be circular, oval, or square.
長方形あるいは多角形が製造上用いられる（第５図参照
）。こうして形成される微***の壁面がその材料の性質
により励起光を透過するものである場合は励起光を透過
しないものを微***の壁面に塗布したり、蒸着するなど
で励起光の透過を防くことが必要である。また、穴の壁
面が光学的な意味で面精度が出ていないときには樹脂の
塗布によって滑らかにし、その上に金属など反射率の高
い層を形成することがを効である。Rectangular or polygonal shapes are used in manufacturing (see Figure 5). If the wall surface of the microhole formed in this way allows the excitation light to pass through due to the nature of the material, a material that does not transmit the excitation light can be coated or deposited on the wall surface of the microhole to prevent the transmission of the excitation light. It is necessary to Furthermore, if the wall surface of the hole does not have surface precision in an optical sense, it is effective to smooth it by coating with resin and then form a layer with high reflectance such as metal on top of it.
また、微***の大きさは特に限定の必要はないが、ある
程度の厚さの微***に輝尽蛍光体を埋め込む技術的な困
難性の故に、大きさの下限は０．０１画程度であり、ま
たＸ線画像診断に要求される空間分解能の点から上限は
０．４ｍｍ程度である。輝尽蛍光体板の面に対する微小
穴の方向は垂直方向であるが、完全に垂直であってもよ
いが斜めであってもよい。斜めの微***は、たとえば、
内径が微***の径と同じ多数の毛細管を正方配列して束
ね、あるいは−層ずつ重ね、毛細管の間に接着剤を充填
、硬化後、斜めに切断、研磨、洗浄することで製作する
ことができる。また、穴内部の形状はストレートであっ
ても、上下の大きさが異なっていてもよい。穴を形成す
る材料も穴を形成した後、ある程度の機械的強度がある
ものならなんでもよい。In addition, there is no need to limit the size of the microhole, but due to the technical difficulty of embedding stimulable phosphor in a microhole with a certain thickness, the lower limit of the size is about 0.01 picture. , and the upper limit is about 0.4 mm in view of the spatial resolution required for X-ray image diagnosis. The direction of the microholes relative to the surface of the stimulable phosphor plate is perpendicular, and may be completely perpendicular or oblique. For example, a diagonal microhole is
It can be manufactured by bundling a large number of capillaries whose inner diameter is the same as the diameter of the microhole in a square array, or stacking them layer by layer, filling adhesive between the capillaries, and after curing, cutting diagonally, polishing, and cleaning. can. Further, the shape of the inside of the hole may be straight, or the upper and lower sizes may be different. The material for forming the hole may be any material as long as it has a certain degree of mechanical strength after the hole is formed.
また、前記実施例においては、微***形成後のステンレ
ス板の片面にガラス板を使用する例を示したが、金属シ
ート等を用いることも可能であり、そのときは、そのシ
ートは励起光および輝尽発光光を反射するものであるこ
とが好ましい。あるいは、励起光は反射するが輝尽発光
光は透過するものであってもよく、その逆の場合も使用
の仕方即ち励起光の照射方向と輝尽発光光の集光の方向
の選択によっては可能である。選択ミラーの働きを有す
るカバーは両面に接着等によって形成することも効果的
である。カバーの種類は特に限定はないが、Ｘ線の後方
散乱線を防くため、励起光と輝尽発光光は通し、Ｘ線を
吸収する例えば鉛ガラスを用いることも有効である。あ
るいは鉛板を貼ることも有効である。In addition, in the above embodiment, an example was shown in which a glass plate was used on one side of the stainless steel plate after microholes were formed, but it is also possible to use a metal sheet, etc. In that case, the sheet can be used for excitation light and Preferably, it reflects stimulated luminescence light. Alternatively, the excitation light may be reflected but the stimulated luminescence light may be transmitted, or vice versa, depending on the method of use, that is, the selection of the direction of irradiation of the excitation light and the direction of collection of the stimulated luminescence light. It is possible. It is also effective to form the cover, which functions as a selection mirror, on both sides by adhesive or the like. The type of cover is not particularly limited, but in order to prevent backscattered X-rays, it is also effective to use, for example, lead glass, which allows excitation light and stimulated emission light to pass through but absorbs X-rays. Alternatively, pasting a lead plate is also effective.
各微***に埋設される輝尽蛍光体としては、励起光の散
乱が起きるような不透明のものであっても、励起光ある
いは輝尽発光光に対し透明なものであってもよく、その
組成はどのようなものであっても適用可能であり、限定
されないし、その埋設方法についても、制限なく、粒径
５μｍ以下の輝尽蛍光体粉末を結合剤の溶液に分散させ
て流し込む方法、輝尽蛍光体粉末をそのまま微***に押
し込み、その後結合剤を浸み込ませる方法、リフトオフ
の方法を適用し、穴部以外の部分にあとで可溶な層を形
成し、輝尽蛍光体を蒸着等で穴内部を埋め、その後穴部
以外の輝尽蛍光体を除去する方法など種々の方法を用い
ることができる。The stimulable phosphor embedded in each microhole may be opaque so as to cause scattering of excitation light, or may be transparent to excitation light or stimulated emission light, and its composition Any type of material can be applied and is not limited, and there are no restrictions on the embedding method. Stimulated phosphor powder is pushed directly into the micro-holes, then a binder is soaked in, and a lift-off method is applied to form a layer that is later soluble in areas other than the holes, and the stimulable phosphor is vapor-deposited. Various methods can be used, such as a method of filling the inside of the hole with etc. and then removing the stimulable phosphor outside the hole.
本発明で使用される輝尽蛍光体板表面の穴部以外の部分
が励起光を反射する性質を持っていれば、励起光ビーム
の走査時に励起光の反射が生しる。If the portions other than the holes on the surface of the stimulable phosphor plate used in the present invention have the property of reflecting excitation light, the excitation light will be reflected when the excitation light beam is scanned.
その反射光を集光伝達して、光電変換器により電気信号
とし、その電気信号を解析することによって微***と励
起光の位置関係を検出することができる。その結果励起
光走査のタイミングや輝尽発光光の読取りのタイミング
を得るための同期信号を得ることができる。The reflected light is condensed and transmitted, converted into an electrical signal by a photoelectric converter, and by analyzing the electrical signal, the positional relationship between the microhole and the excitation light can be detected. As a result, it is possible to obtain a synchronization signal for obtaining the timing of excitation light scanning and the timing of reading stimulated luminescence light.
又、上記実施例においては、粉末の輝尽蛍光体を微***
に充填する場合を示したが、他の種類の輝尽蛍光体を微
***に埋設してもよい。その場合には、」二連のガラス
板、保護層は必ずしも設けなくてもよい。Further, in the above embodiment, a case where a powdered stimulable phosphor is filled into a microhole is shown, but other types of stimulable phosphor may be buried in a microhole. In that case, it is not necessary to provide two glass plates and a protective layer.
以上述べたように本発明によれば、画素の潜像形成に用
いられる微***が互いに不干渉性に形成されているから
、たとえ輝尽蛍光体が励起光に散乱性があったとしても
、それによる空間分解能の低下は完全に防止することが
き、高分解能のディジタルχ線像の提供に大いに寄与し
得る。As described above, according to the present invention, the microholes used to form latent images of pixels are formed so as to be incoherent with each other, so even if the stimulable phosphor scatters excitation light, The resulting decrease in spatial resolution can be completely prevented and can greatly contribute to the provision of high-resolution digital chi-ray images.
第１図は本発明の原理ブロック図、
第２図は本発明の製造過程を示す図、
第３図は輝尽蛍光体での励起光散乱説明図、第４図は微
***円形の輝尽蛍光体板を示す図、第５図は微***の各
種平面形状を示す図、第６図は微***の各種断面形状を
示す図である。
第１図乃至第６図において、
２は穴形成部（ステンレス板２０、穴壁２８）、４は光
透過性封止材（保護層３４）、
５は封止材（ガラス板３２）、
６は輝尽蛍光体、
２６は微***である。
２２□ ＝
さ１２１３８月の 輯ンレー勺り光イむ６！ｊ−！−コ
ニｎ（’ｙｄｉ ）μ胡第 ２ 図（相の１）
（Ａ）
平面図
（Ａ）
イ泡東＝１燥合
（Ｂ）本発θ胎を易会
オ甲／ｌ−勺や２ケ―イネ７Σ−＃＄ガじこ私さ、Ｌ
＃、Ｅｆ Ｌ七つ第３図
を政小え円形偵ｆ影答ず光Ｊ芋ｆ反
第４図Figure 1 is a block diagram of the principle of the present invention, Figure 2 is a diagram showing the manufacturing process of the present invention, Figure 3 is an explanatory diagram of excitation light scattering in a photostimulated phosphor, and Figure 4 is a circular microhole for photostimulation. FIG. 5 is a diagram showing a phosphor plate, FIG. 5 is a diagram showing various planar shapes of microholes, and FIG. 6 is a diagram showing various cross-sectional shapes of microholes. 1 to 6, 2 is a hole forming part (stainless steel plate 20, hole wall 28), 4 is a light-transparent sealing material (protective layer 34), 5 is a sealing material (glass plate 32), 6 26 is a photostimulated phosphor, and 26 is a microhole. 22□ = 1213 August's calendar is shining 6! j-! -Koni n('ydi)μhu Figure 2 (Phase 1) (A) Plan view (A) Iwa East = 1 dry combination (B) Honshu θ womb wo kikai oko / l - Goya 2 K-ine7Σ-#$gajiko me, L
#, Ef L seven figure 3, political small circle reconnaissance f shadow answer light J potato f anti-figure 4
Claims (8)
穴形成部（２）内に輝尽蛍光体（６）を埋設した微***
（２６）を交差方向の各交差位置に設けた輝尽蛍光体板
。(1) Microholes (26) in which the stimulable phosphor (6) was embedded were provided at each intersecting position in the intersecting direction within the hole-forming portion (2) that had approximately the same size and was processed to be opaque to excitation light. Photostimulated phosphor board.
とする請求項（１）記載の輝尽蛍光体板。(2) The stimulable phosphor plate according to claim 1, wherein the stimulable phosphor has excitation light scattering properties.
光に対し反射性を有することを特徴とする請求項（１）
記載の輝尽蛍光体板。(3) Claim (1) characterized in that the wall surface of the hole forming portion (2) has a reflective property for excitation light and stimulated fluorescence light.
The photostimulated phosphor plate described.
対し反射性を呈することを特徴とする請求項（１）記載
の輝尽蛍光体板。(4) The stimulable phosphor plate according to claim (1), wherein the surface of the plate other than the microholes on the side where the excitation light is scanned is reflective to the excitation light.
励起光不透過性に加工された穴形成部（２）該穴形成部
（２）の光透過側に配置された光透過性封止材（４）と
、 前記穴形成部（２）形成基板の光透過側の面とは反対側
の面に配置された封止材（５）と、前記光透過性封止材
（４）と前記封止材（５）とによって封止された前記穴
形成部（２）内に充填された輝尽蛍光体（６）とより成
る輝尽蛍光体板。(5) Hole forming portions that are approximately equal in size and processed to be opaque to excitation light at each intersecting position in the intersecting direction. (2) A light transmitting hole located on the light transmitting side of the hole forming portion (2). a sealing material (4); a sealing material (5) disposed on a surface opposite to the light-transmitting side surface of the hole-forming portion (2)-forming substrate; and a light-transmitting sealing material (4). ) and a stimulable phosphor (6) filled in the hole forming part (2) sealed with the sealing material (5).
を特徴とする請求項（５）記載の輝尽蛍光体板。(6) The stimulable phosphor plate according to claim 5, wherein the stimulable phosphor (6) has excitation light scattering properties.
光に対し反射性を有することを特徴とする請求項（５）
記載の輝尽蛍光体板。(7) Claim (5) characterized in that the wall surface of the hole forming part (2) has a reflective property for excitation light and stimulated fluorescence light.
The photostimulated phosphor plate described.
対し反射性を呈することを特徴とする請求項（５）記載
の輝尽蛍光体板。(8) The stimulable phosphor plate according to claim (5), wherein the surface of the plate other than the microholes on the side where the excitation light is scanned is reflective to the excitation light.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13557389A JPH032599A (en) | 1989-05-29 | 1989-05-29 | Stimulable phosphor plate |
| EP90905637A EP0426865B1 (en) | 1989-04-03 | 1990-03-30 | Phosphor plate and method for manufacturing the phosphor plate |
| PCT/JP1990/000434 WO1990012405A1 (en) | 1989-04-03 | 1990-03-30 | Accelerated phosphor plate and accelerated phosphor reader |
| DE69024610T DE69024610T2 (en) | 1989-04-03 | 1990-03-30 | PHOSPHORIC PLATE AND METHOD FOR THE PRODUCTION THEREOF |
| US08/079,951 US5444266A (en) | 1989-04-03 | 1993-06-02 | Photostimulable phosphor plate and photostimulable phosphor reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13557389A JPH032599A (en) | 1989-05-29 | 1989-05-29 | Stimulable phosphor plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH032599A true JPH032599A (en) | 1991-01-08 |
Family
ID=15154977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13557389A Pending JPH032599A (en) | 1989-04-03 | 1989-05-29 | Stimulable phosphor plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH032599A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5327953U (en) * | 1976-08-13 | 1978-03-09 | ||
| JP2015507741A (en) * | 2011-12-22 | 2015-03-12 | サン−ゴバン セラミックス アンド プラスティクス，インコーポレイティド | Image storage device including storage phosphor powder, method of forming image storage device, and computed radiography device |
-
1989
- 1989-05-29 JP JP13557389A patent/JPH032599A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5327953U (en) * | 1976-08-13 | 1978-03-09 | ||
| JP2015507741A (en) * | 2011-12-22 | 2015-03-12 | サン−ゴバン セラミックス アンド プラスティクス，インコーポレイティド | Image storage device including storage phosphor powder, method of forming image storage device, and computed radiography device |
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