JPH0578820B2 - - Google Patents
Info
- Publication number
- JPH0578820B2 JPH0578820B2 JP59226147A JP22614784A JPH0578820B2 JP H0578820 B2 JPH0578820 B2 JP H0578820B2 JP 59226147 A JP59226147 A JP 59226147A JP 22614784 A JP22614784 A JP 22614784A JP H0578820 B2 JPH0578820 B2 JP H0578820B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- image
- holding means
- radiation
- recording
- 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 - Lifetime
Links
- 230000005855 radiation Effects 0.000 claims description 55
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 27
- 230000005284 excitation Effects 0.000 claims description 15
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 238000004020 luminiscence type Methods 0.000 claims description 5
- 238000003325 tomography Methods 0.000 description 30
- 238000000034 method Methods 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium 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
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Measurement Of Radiation (AREA)
- Radiography Using Non-Light Waves (AREA)
Description
【発明の詳細な説明】
（発明の分野）
本発明は、蓄積性螢光体シートに放射線画像情
報を蓄積記録し、次いでこれに励起光を照射し、
蓄積記録された画像情報に応じて輝尽発光する光
を検出して画像情報を読み取る放射線画像情報記
録読取装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention involves storing and recording radiation image information on a stimulable phosphor sheet, then irradiating the same with excitation light,
The present invention relates to a radiation image information recording/reading device that reads image information by detecting stimulated light emitted according to accumulated and recorded image information.
（発明の技術的背景および先行技術）
ある種の螢光体に放射線（Ｘ線、α線、β線、
γ線、電子線、紫外線等）を照射すると、この放
射線のエネルギーの一部がその螢光体中に蓄積さ
れ、その後その螢光体に可視光等の励起光を照射
すると、蓄積されたエネルギーに応じて螢光体が
輝尽発光を示す。このような性質を示す螢光体を
蓄積性螢光体と言う。(Technical Background and Prior Art of the Invention) Certain phosphors are exposed to radiation (X-rays, α-rays, β-rays,
When irradiated with γ-rays, electron beams, ultraviolet rays, etc., part of the energy of this radiation is accumulated in the phosphor, and when the phosphor is then irradiated with excitation light such as visible light, the accumulated energy is In response to this, the phosphor exhibits stimulated luminescence. A phosphor exhibiting such properties is called a stimulable phosphor.
この蓄積性螢光体を利用して、人体等の被写体
の放射線画像情報を一旦蓄積性螢光体のシート
（以下、「蓄積性螢光体シート」あるいは単に「シ
ート」と称する）に記録し、これを励起光で走査
して輝尽発光させ、この輝尽発光光を光電的に読
み取つて画像信号を得、この画像信号を処理して
診断適性の良い被写体の放射線画像を得る放射線
画像情報記録再生方法が提案されている（例えば
特開昭55−12429号、同55−116340号、同55−
163472号、同56−11395号、同56−104645号な
ど）。 Using this stimulable phosphor, radiation image information of a subject such as a human body is temporarily recorded on a stimulable phosphor sheet (hereinafter referred to as a ``stimulable phosphor sheet'' or simply ``sheet''). , this is scanned with excitation light to cause stimulated luminescence, this stimulated luminescent light is read photoelectrically to obtain an image signal, and this image signal is processed to obtain a radiation image of a subject with good diagnostic suitability.Radiographic image information. Recording and reproducing methods have been proposed (for example, Japanese Patent Application Laid-open Nos. 55-12429, 55-116340, and 55-
(No. 163472, No. 56-11395, No. 56-104645, etc.)
この方法において、最終的な画像はハードコピ
ーとして再生したり、あるいはCRT上に再生し
たりすることができる。とにかく、このような放
射線画像情報記録再生方法においては、蓄積性螢
光体シートは最終的に画像情報を記録するもので
はなく、上記のような最終的な記録媒体に画像を
与えるために一時的に画像情報を担持するもので
あるから、この蓄積性螢光体シートは繰り返し使
用するようにしてもよく、またそのように繰返し
使用すれば極めて経済的である。 In this way, the final image can be reproduced as a hard copy or on a CRT. In any case, in such a radiation image information recording and reproducing method, the stimulable phosphor sheet is not used to ultimately record image information, but is used temporarily to provide an image to the final recording medium as described above. Since the stimulable phosphor sheet carries image information, the stimulable phosphor sheet may be used repeatedly, and such repeated use is extremely economical.
上記のように蓄積性螢光体シートを再使用する
には、輝尽発光光が読み取られた後の蓄積性螢光
体シートに残存する放射線エネルギーを、例えば
特開昭56−11392号、同56−12599号に示されるよ
うにシートに光や熱を照射することによつて放出
させて残存放射線画像を消去し、この蓄積性螢光
体シートを再度放射線画像記録に使用すればよ
い。 In order to reuse the stimulable phosphor sheet as described above, the radiation energy remaining in the stimulable phosphor sheet after the stimulated luminescence light has been read can be absorbed by As shown in No. 56-12599, the remaining radiation image may be erased by irradiating the sheet with light or heat, and the stimulable phosphor sheet may be used again for recording radiation images.
そこで本出願人は、放射線画像を蓄積記録しう
る蓄積性螢光体シートを所定の循環通路に沿つて
互いに独立して搬送可能な循環搬送手段と、前記
循環通路にあつて、前記シートに被写体を通して
放射線を照射することにより、このシート上に被
写体の放射線画像情報を蓄積記録する画像記録部
と、前記循環通路にあつて、前記画像記録部にお
いて放射線画像情報が蓄積記録されたシートを走
査する励起光を発する励起光源およびこの励起光
により走査されたシートから発せられた輝尽発光
光を読み取つて画像信号を得る光電読取手段から
なる画像読取部と、前記循環通路にあつて、前記
画像読取部において画像読取りが行なわれた後の
シートに画像記録がなされるのに先行してこのシ
ートに残存する放射線エネルギーを放出させる消
去部とを１つの装置に組み込み、上記蓄積性螢光
体シートを上記各部間を循環させて繰り返し使用
するようにしたいわゆるビルト・イン・タイプの
放射線画像情報記録読取装置を先に提案した（特
願昭58−66730号）。このような構造の放射線画像
情報記録読取装置によれば、放射線画像情報の記
録、読取りを連続的に能率的に行なうことがで
き、従つてこの放射線画像情報記録読取装置は特
に集団検診に適したものであり、また集団検診等
を目的としてＸ線撮影車のような移動ステーシヨ
ンに積載することも可能である。 Therefore, the present applicant has proposed a circulating conveyance means capable of conveying stimulable phosphor sheets capable of accumulating and recording radiation images along a predetermined circulation path independently of each other, and a circulation path in which a subject is placed on the sheet in the circulation path. an image recording unit that accumulates and records radiographic image information of the subject on the sheet by irradiating radiation through the image recording unit; an image reading unit comprising an excitation light source that emits excitation light and photoelectric reading means that reads stimulated luminescence light emitted from a sheet scanned by the excitation light to obtain an image signal; The above-mentioned stimulable phosphor sheet is assembled into one device with an erasing section that releases the radiation energy remaining on the sheet prior to recording an image on the sheet after the image is read in the section. We have previously proposed a so-called built-in type radiographic image information recording/reading device in which the above-mentioned parts are circulated and used repeatedly (Japanese Patent Application No. 66730/1983). According to the radiation image information recording/reading device having such a structure, it is possible to record and read radiation image information continuously and efficiently. Therefore, this radiation image information recording/reading device is particularly suitable for mass medical examinations. It is also possible to load it onto a mobile station such as an X-ray imaging vehicle for the purpose of group medical examinations and the like.
ところで、上記の如く蓄積性螢光体シートに被
写体を通して放射線を照射することにより、該シ
ート上に被写体の放射線画像情報を蓄積記録する
撮影方法の１つに、いわゆる断層撮影方法と呼ば
れるものが存在する（例えば特開昭58−67245号
参照）。かかる断層撮影方法とは、放射線源、た
とえばＸ線管球と蓄積性螢光体シートとを、被写
体を介して配置し、Ｘ線照射時にＸ線管と上記シ
ートとを、被写体のある断層面を中心として直線
定則（Ｘ線管球の焦点、断層面の１点および上記
シート上の１点が直線をなすこと）と等比定則
（焦点と断層面間の距離ａと断層面と上記シート
間の距離ｂとの比が一定であること）をほぼ満足
するように相対移動させることにより上記シート
上に所望の断層面のみを結像し、その他の被写体
の断層面をぼかすものであり、この結果被写体の
所望の断層面のみのＸ線画像が得られるというも
のである。 By the way, as one of the imaging methods that accumulates and records radiation image information of the subject on a stimulable phosphor sheet by irradiating radiation through the subject as described above, there is a so-called tomography method. (For example, see JP-A-58-67245). This tomography method involves placing a radiation source, for example, an The straight line law (the focal point of the X-ray tube, one point on the tomographic plane, and one point on the above sheet form a straight line) and the geometric law (the distance a between the focal point and the tomographic plane, the tomographic plane and the above sheet) By relatively moving the sheet so that the ratio of the distance b between As a result, an X-ray image of only the desired tomographic plane of the subject can be obtained.
上記断層撮影方法においては、上述の直線定則
と等比定則とが成立すれば足り、従つて放射線源
とシートとの移動方式としては、直線軌道、円軌
道、惰円軌道、ハイポサイクロイド軌道、渦巻軌
道方式等の種々の方式を使用し得る。 In the above-mentioned tomography method, it is sufficient that the above-mentioned linear law and geometric law are satisfied, and therefore, the methods of moving the radiation source and the sheet include linear orbit, circular orbit, inertial circular orbit, hypocycloid orbit, spiral orbit, Various schemes may be used, such as orbital schemes.
かかる断層撮影も、上記の如きビルト・イン・
タイプの放射線画像情報記録読取装置で行なうこ
とができれば非常に便利である。なぜならば、従
来の断層撮影装置はそれ自体が独立して構成され
ており、各撮影毎に上記シートを収納したカセツ
テを撮影装置にセツトしなければならず、また撮
影後も撮影装置からカセツテを取り外し、該カセ
ツテからシートを取り出して読み取りを行なわな
ければならず、取扱いが極めて繁雑であると共に
連続撮影ができないという不都合があるのに対
し、ビルト・イン・タイプの装置で断層撮影を行
なうことができれば、該装置によつて断層撮影、
読み取り、消去を順次自動的に能率良く行なうこ
とができ、また、その結果シートを繰り返し使用
しながら多くの被写体の断層撮影を連続的にかつ
能率良く行なうことができるからである。 Such tomography also uses built-in technology as described above.
It would be very convenient if this could be done with a type of radiation image information recording/reading device. This is because conventional tomography devices are constructed independently, and the cassette containing the sheet must be set in the imaging device for each imaging session, and the cassette must be removed from the imaging device after imaging. It is necessary to remove the sheet and take it out from the cassette to read it, which is very complicated to handle and cannot perform continuous imaging.However, it is possible to perform tomography with a built-in type device. If possible, the device can perform tomography,
This is because reading and erasing can be performed automatically and efficiently in sequence, and as a result, tomography of many objects can be performed continuously and efficiently while using the sheet repeatedly.
（発明の目的）
本発明の目的は、上記事情に鑑み、断層撮影を
行なうことができるように構成したビルト・イ
ン・タイプの放射線画像情報記録読取装置を提供
することにある。(Object of the Invention) In view of the above-mentioned circumstances, an object of the present invention is to provide a built-in type radiation image information recording/reading device configured to be capable of performing tomography.
（発明の構成）
本発明に係る装置は、複数枚の蓄積性螢光体シ
ートを所定の搬送通路に沿つて互いに独立して搬
送可能なシート搬送手段、画像記録部、前記搬送
通路上にある画像読取部、および前記搬送通路上
にある消去部からなり、
前記画像記録部が、放射線源と、被写体を透過
した前記放射線源からの放射線を受ける位置に前
記蓄積性螢光体シートを保持するシート保持手段
とを備え、
画像記録時に前記放射線源と前記シート保持手
段とは、前記被写体の任意断層面を中心として放
射線源とシート保持手段に保持されたシートとが
直線定則と等比定則とをほぼ満足するように相対
移動せしめられ、
非記録時に、前記シート保持手段の一部が前記
搬送通路の始端と、他部が前記搬送通路の終端と
連結して前記シートを前記終端から前記シート保
持手段に、該シート保持手段から前記始端に受け
渡し可能とされ、このシート保持手段と前記シー
ト搬送手段とで前記シートを循環搬送可能に構成
されていることを特徴とするものである。(Structure of the Invention) An apparatus according to the present invention includes a sheet conveyance means capable of conveying a plurality of stimulable phosphor sheets independently of each other along a predetermined conveyance path, an image recording unit, and a sheet conveyance unit on the conveyance path. The image reading unit includes an image reading unit and an erasing unit located on the conveyance path, and the image recording unit holds the stimulable phosphor sheet at a position where it receives radiation from the radiation source that has passed through the subject. and a sheet holding means, and when recording an image, the radiation source and the sheet holding means are arranged such that the radiation source and the sheet held by the sheet holding means are arranged according to a straight line law and a geometric law, with the radiation source and the sheet held by the sheet holding means being centered at an arbitrary tomographic plane of the subject. is relatively moved so as to substantially satisfy the following, and during non-recording, a part of the sheet holding means connects with a starting end of the conveying path, and another part connects with a terminal end of the conveying path to move the sheet from the terminal end to the sheet holding means. The sheet holding means is configured such that the sheet can be transferred from the sheet holding means to the starting end, and the sheet can be conveyed in a circular manner by the sheet holding means and the sheet conveying means.
（実施態様）
以下、図面に示す実施例を参照しながら本発明
を詳細に説明する。(Embodiments) Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
第１図は本発明に係る装置の実施態様を示す側
面概念図、第２図は第１図の装置における画像記
録部を示す正面概念図（第１図の矢印Ａ方向から
見た図）である。 FIG. 1 is a conceptual side view showing an embodiment of the apparatus according to the present invention, and FIG. 2 is a conceptual front view (view from the direction of arrow A in FIG. 1) showing the image recording section of the apparatus shown in FIG. be.
図示の如く本装置は遮光ハウジング５内に搬送
通路２を有し、蓄積性螢光体シート１３はこの搬
送通路２上を搬送ローラや搬送ベルト等から成り
複数枚の蓄積性螢光体シート１３を互いに独立し
て搬送可能なシート搬送手段２１により搬送され
る。本装置上部には被写体の断層撮影を行なう画
像記録部１が設けられ、また前記搬送通路２上に
は画像読取部３および消去部４がそれぞれ設けら
れている。前記シート１３は前記シート搬送手段
２１により上記画像読取部３から消去部４を通つ
て矢印L1，L2，L3，L4，L5，L6，L7の順に搬送
される。 As shown in the figure, this device has a conveyance path 2 in a light-shielding housing 5, and a plurality of stimulable phosphor sheets 13 are conveyed on this conveyance path 2 by conveyance rollers, conveyance belts, etc. The sheets are conveyed by a sheet conveying means 21 that can convey them independently of each other. An image recording section 1 for performing tomography of a subject is provided at the top of the apparatus, and an image reading section 3 and an erasing section 4 are provided on the transport path 2, respectively. The sheet 13 is conveyed by the sheet conveying means 21 from the image reading section 3 through the erasing section 4 in the order of arrows L 1 , L 2 , L 3 , L 4 , L 5 , L 6 , and L 7 .
画像記録部１は、放射線源１１と、該放射線源
１１から発せられた放射線が被写体１２を通つて
入射して来る撮影位置に蓄積性螢光体シート１３
を保持し、該シート１３に被写体１２の放射線画
像情報を蓄積記録させるシート保持手段１４とを
備えて成る。このシート保持手段１４は上記搬送
通路２の始端（上記矢印L1側）と終端（上記矢
印L7側）との間に位置せしめられている。また、
このシート保持手段１４はガイド板１４６および
該ガイド板の両端に設けられた搬送ローラ１４５
Ａ，１４５Ｂからなり、ハウジング１４１により
保持されている。シート１３、ガイド板１４６、
搬送ローラ１４５Ａ，１４５Ｂの位置関係が、平
面図である第５図に示されている。シート１３に
関して下方側のガイド板１４６は、シート１３の
両側端のみを保持するのではなくシート１３全体
を支えるように平板状のものであるのが好まし
い。この場合、撮影時のシート１３へのバツク散
乱を防止するために、バツク散乱の少ない鉛や鉄
のような材質で構成するのが好ましい。 The image recording unit 1 includes a radiation source 11 and a stimulable phosphor sheet 13 at a photographing position where the radiation emitted from the radiation source 11 enters through a subject 12.
and a sheet holding means 14 for storing and recording radiation image information of the subject 12 on the sheet 13. This sheet holding means 14 is located between the starting end (on the side of the above-mentioned arrow L1 ) and the ending end (on the side of the above-mentioned arrow L7 ) of the conveyance path 2. Also,
This sheet holding means 14 includes a guide plate 146 and conveying rollers 145 provided at both ends of the guide plate.
A and 145B, and is held by a housing 141. Sheet 13, guide plate 146,
The positional relationship between the conveyance rollers 145A and 145B is shown in FIG. 5, which is a plan view. It is preferable that the guide plate 146 on the lower side with respect to the sheet 13 has a flat plate shape so as to support the entire sheet 13 instead of holding only both side ends of the sheet 13. In this case, in order to prevent back scattering onto the sheet 13 during photographing, it is preferable to use a material such as lead or iron that causes less back scattering.
上記放射線源１１と上記シート保持手段１４と
は、被写体１２の任意断層面１２ａ（第２図参照）
を中心として放射線源１１とシート保持手段１４
に保持されたシート１３とが前述の直線定則と等
比定則とをほぼ満足する様に相対移動可能に構成
されている。またシート保持手段１４の移動は前
記ハウジング１４１の移動によりハウジング１４
１と一体的に行なわれる。 The radiation source 11 and the sheet holding means 14 are an arbitrary tomographic plane 12a of the subject 12 (see FIG. 2).
A radiation source 11 and a sheet holding means 14 are located at the center.
The sheet 13 held by the sheet 13 is configured to be relatively movable so as to substantially satisfy the above-mentioned linear law and geometric ratio law. Further, the movement of the sheet holding means 14 is caused by the movement of the housing 141.
It is carried out integrally with 1.
ハウジング１４１と放射線源１１とは、平行リ
ンク機構から成る連結手段１５によつて前述の相
対移動可能に連結されている。該連結手段１５
は、２本の平行に配設された縦ロツド１５１，１
５２と、両縦ロツド１５１，１５２の上端部に取
り付けられた放射線源１１を支持する横ロツド１
５３と、両縦ロツド１５１，１５２の下端部に取
り付けられたシート保持手段１４を支持する横ロ
ツド１５４とで構成され、両縦ロツド１５１，１
５２とが両横ロツド１５３，１５４との中間位置
で基台１６に矢印Ｂ方向（第１図参照）および矢
印Ｃ方向（第２図参照）に回動可能に取り付けら
れている。また、両縦ロツド１５１，１５２は駆
動手段１７に連結されている。駆動手段１７は、
第１図、第２図および第１図の矢印Ｄ方向から見
た第３図に示されるように、基台１６上に配設さ
れた回転テーブル１７１と、該回転テーブル１７
１上に配設された雄ネジ棒１７２と、該雄ネジ棒
に螺合した雌ネジ部材１７３と、該雌ネジ部材１
７３に基端が連結され、先端がそれぞれ上記縦ロ
ツド１５１，１５２に連結されて三角状に配設さ
れた２本の連結ロツド１７４，１７５とから成
る。上記雄ネジ棒１７２は、上記回転テーブル１
７１上に固定された２つの軸受１７６，１７７に
よりその軸方向回り（矢印Ｅ方向）に回転可能に
支持され、かつその軸方向回りに回転せしめるべ
くモータ（図示せず）に接続されたチエイン１７
８を係合させてある。もちろん、上記雄ネジ棒１
７２は、回転テーブル１７１の正逆回転により、
該テーブル１７１の回転中心を中心として矢印Ｆ
方向にも回転し得る。 The housing 141 and the radiation source 11 are connected to be movable relative to each other by the connecting means 15, which is a parallel link mechanism. The connecting means 15
is two vertical rods 151,1 arranged in parallel.
52, and a horizontal rod 1 that supports the radiation source 11 attached to the upper ends of both vertical rods 151 and 152.
53, and a horizontal rod 154 that supports the sheet holding means 14 attached to the lower ends of both vertical rods 151, 152.
52 is rotatably attached to the base 16 at an intermediate position between the horizontal rods 153 and 154 in the direction of arrow B (see FIG. 1) and the direction of arrow C (see FIG. 2). Further, both vertical rods 151 and 152 are connected to drive means 17. The driving means 17 is
As shown in FIG. 1, FIG. 2, and FIG. 3 viewed from the direction of arrow D in FIG.
A male threaded rod 172 disposed on the male threaded rod, a female threaded member 173 screwed onto the male threaded rod, and the female threaded member 1
It consists of two connecting rods 174, 175 arranged in a triangular shape, with the proximal end connected to 73 and the distal ends connected to the vertical rods 151, 152, respectively. The male threaded rod 172 is connected to the rotary table 1.
Chain 17 is supported rotatably around its axis (in the direction of arrow E) by two bearings 176 and 177 fixed on 71, and is connected to a motor (not shown) for rotation around its axis.
8 is engaged. Of course, the above male threaded rod 1
72 is caused by the forward and reverse rotation of the rotary table 171.
The arrow F is centered around the rotation center of the table 171.
It can also rotate in any direction.
上記２本の縦ロツド１５１，１５２と雌ネジ部
材１７３およびそれらを連結する連結ロツド１７
４，１７５が形成する三角形は変化し得ない。従
つて、例えば、第３図に示す如く、回転テーブル
１７１の回転を止め、雄ネジ棒１７２を回転させ
て雌ネジ部材１７３を矢印Ｇ１方向に直線移動さ
せれば連結手段１５も矢印Ｇ２方向に直線移動
し、それによつて例えば第１図に示されるように
放射線源１１が矢印Ｇ３，Ｇ４方向に移動し、ハ
ウジング１４１、従つてシート１３が矢印Ｇ５，
Ｇ６方向に移動し、この両者の間には前述の直線
定則および等比定則が成り立つのでいわゆる直線
軌道方式の断層撮影を行ない得る。第３図に示す
回転テーブル１７１を90°回転させた状態で同様
のことを行なえば、第２図に示す様に、放射線源
１１が矢印Ｈ１，Ｈ２方向に移動し、ハウジング
１４１がＨ３，Ｈ４方向に移動してこちらの方向
の直線軌道方式断層撮影を行ない得る。また、雌
ネジ部材１７３を第３図に示す如く回転テーブル
１７１の回転中心Ｉから距離γだけずらして位置
決めし、この状態で回転テーブル１７１を回転さ
せれば雌ネジ部材１７３は半径γの円を描き、従
つて連結手段１５も同様に半径γの円を描くので
いわゆる円軌道方式の断層撮影を行ない得る。さ
らに、雄ネジ棒１７２の矢印Ｅ方向の回転と回転
テーブル１７１の矢印Ｆ方向の回転とを組み合わ
せれば渦巻軌道方式の断層撮影等種々の断層撮影
を行ない得る。 The two vertical rods 151 and 152, the female screw member 173, and the connecting rod 17 that connects them.
The triangle formed by 4,175 cannot change. Therefore, for example, as shown in FIG. 3, if the rotation of the rotary table 171 is stopped and the male threaded rod 172 is rotated to move the female threaded member 173 linearly in the direction of arrow G1, the connecting means 15 will also move in the direction of arrow G2. linear movement, whereby the radiation source 11 is moved in the direction of arrows G3, G4, as shown for example in FIG.
It moves in the G6 direction, and since the above-mentioned straight line law and geometric ratio law hold between the two, so-called straight trajectory type tomography can be performed. If the same thing is done with the rotary table 171 shown in FIG. 3 rotated 90 degrees, the radiation source 11 will move in the directions of arrows H1 and H2, and the housing 141 will move in the directions of arrows H3 and H4, as shown in FIG. It is possible to move in this direction and perform straight-line trajectory tomography in this direction. In addition, if the female threaded member 173 is positioned at a distance γ from the rotation center I of the rotary table 171 as shown in FIG. Since the connecting means 15 similarly draws a circle with radius γ, so-called circular orbit type tomography can be performed. Furthermore, by combining the rotation of the male threaded rod 172 in the direction of arrow E and the rotation of the rotary table 171 in the direction of arrow F, various types of tomography such as spiral orbit type tomography can be performed.
なお、シート保持手段１４上には、ブツキー１
４８（第１図参照）を配設することもでき、該ブ
ツキー１４８のグリツドを例えば回転軌道撮影の
際自転させるように構成することも可能である。 Note that on the sheet holding means 14 there is a Button key 1.
48 (see FIG. 1), and the grid of the button key 148 can be configured to rotate, for example, during rotation orbit photography.
また、被写体１２を支持する支持台６は、脚柱
６ａが伸縮自在に構成され、ピニオン・ラツク機
構や油圧機構等の公知の上下動機構により矢印Ｊ
方向に上下動可能に構成され、撮影される被写体
の断層面１２ａの位置を自由に選定し得る様に構
成されている。この被写体支持台６は、さらに矢
印Ｋ方向および矢印Ｌ方向（第２図）に水平移動
可能に構成しても良い。また、前記横ロツド１５
４は第２図に示すように前記遮光ハウジング５を
貫通してハウジング１４１と接続しており、遮光
ハウジング５の、横ロツド１５４の貫通する位置
を中心とした横ロツド１５４が移動可能な部分に
は開口部５ａが設けられている。そこでこの開口
部５ａから外部の光が遮光ハウジング内に入りこ
むことを防止するために布等の変形自在な素材か
らなり遮光性を有する遮光カバー５Ａが開口部５
ａを覆う位置に設けられている。 In addition, the support stand 6 that supports the subject 12 has a pillar 6a that is extendable and retractable, and is moved up and down by a known vertical movement mechanism such as a pinion rack mechanism or a hydraulic mechanism.
It is configured to be able to move up and down in the direction, and is configured to freely select the position of the tomographic plane 12a of the subject to be photographed. The subject support stand 6 may be further configured to be horizontally movable in the direction of arrow K and the direction of arrow L (FIG. 2). In addition, the horizontal rod 15
4 passes through the light-shielding housing 5 and is connected to the housing 141, as shown in FIG. is provided with an opening 5a. Therefore, in order to prevent external light from entering the light-shielding housing through the opening 5a, a light-shielding cover 5A made of a deformable material such as cloth and having light-shielding properties is installed at the opening 5a.
It is provided in a position covering a.
画像記録部１において被写体の断層撮影が終了
すると、前記シート保持手段１４を保持するハウ
ジング１４１は矢印ａ方向に移動され、前記シー
ト保持手段１４の一部（図中左側部分）は第１図
においてハウジング１４１の左方に配されたシー
ト搬送手段２１の始端（搬送通路２の始端）に接
続し、前記搬送ローラ１４５Ａが矢印方向に回転
してシート１３はハウジング１４１に設けられた
シート搬出用開口１４４Ａを通つて画像記録部外
に搬出される。搬出されたシート１３は搬送通路
２の始端に受け渡され、該始端から搬送通路２内
を矢印L1，L2，L3の順に搬送され画像読取部３
に運ばれる。また本実施態様においては前記画像
記録部１の下方をシート１３が搬送されるように
なつているために放射線源１１から放射される放
射線が搬送中のシート１３に照射されることを防
止する鉛等からなる放射線遮蔽板７が遮光ハウジ
ング５内の、画像記録部１と記録部の下方および
側方のシート搬送位置との間に設けられている。
なおこの放射線遮蔽板７は、放射線照射時に画像
記録部の下方および側方に搬送中のシートが存在
しない場合には省略してよい。 When the tomography of the subject is completed in the image recording section 1, the housing 141 holding the sheet holding means 14 is moved in the direction of arrow a, and a part of the sheet holding means 14 (the left side part in the figure) is moved as shown in FIG. It is connected to the starting end of the sheet conveying means 21 (the starting end of the conveying path 2) arranged on the left side of the housing 141, and the conveying roller 145A rotates in the direction of the arrow, and the sheet 13 is transferred to the sheet carrying out opening provided in the housing 141. 144A and is carried out to the outside of the image recording section. The conveyed sheet 13 is delivered to the starting end of the conveying path 2, and is conveyed from the starting end within the conveying path 2 in the order of arrows L 1 , L 2 , and L 3 to the image reading section 3 .
carried to. Furthermore, in this embodiment, since the sheet 13 is conveyed below the image recording section 1, the sheet 13 being conveyed is prevented from being irradiated with radiation emitted from the radiation source 11. A radiation shielding plate 7 consisting of the like is provided in the light-shielding housing 5 between the image recording section 1 and the sheet conveying position below and to the side of the recording section.
Note that this radiation shielding plate 7 may be omitted if there is no sheet being conveyed below or to the side of the image recording section during radiation irradiation.
画像読取部３はシート１３を走査するレーザビ
ーム等の励起光２３１を発する励起光源２３２
と、この励起光走査によりシート１３から発せら
れた輝尽発光光を読み取つて電気的画像信号を得
るフオトマル等の光電読取手段２３３とで構成さ
れている。２３４はガルバノメータミラーであ
る。上記励起光走査は、励起光２３１をガルバノ
メータミラー２３４により主走査方向（紙面に垂
直な方向）に偏向せしめながらシート１３上に入
射させると共にシート１３を副走査方向（矢印Ｌ
４方向）に所定速度で搬送し続けることにより行
なわれる。光電読取手段２３３によつて読み取ら
れた画像信号は画像処理回路（図示せず）に伝え
られて必要な画像処理が施された上、必要な画像
再生装置（図示せず）へ送られる。この再生装置
はCRT等のデイスプレイでもよいし、感光フイ
ルムに光走査記録を行なう記録装置でもよいし、
あるいはそのために一旦磁気テープ等の記憶装置
に記録するものでもよい。 The image reading unit 3 includes an excitation light source 232 that emits excitation light 231 such as a laser beam that scans the sheet 13.
and a photoelectric reading means 233 such as a photoprinter that reads the stimulated luminescent light emitted from the sheet 13 by scanning the excitation light and obtains an electrical image signal. 234 is a galvanometer mirror. In the above excitation light scanning, the excitation light 231 is incident on the sheet 13 while being deflected by the galvanometer mirror 234 in the main scanning direction (direction perpendicular to the plane of the paper), and the sheet 13 is deflected in the sub-scanning direction (arrow L
This is done by continuing to convey the material in four directions at a predetermined speed. The image signal read by the photoelectric reading means 233 is transmitted to an image processing circuit (not shown), subjected to necessary image processing, and then sent to a necessary image reproduction device (not shown). This playback device may be a display such as a CRT, a recording device that performs optical scanning recording on a photosensitive film, or a recording device that performs optical scanning recording on a photosensitive film.
Alternatively, for that purpose, the information may be temporarily recorded on a storage device such as a magnetic tape.
読み取り済のシート１３はシート搬送手段２１
により消去部４に送られる。 The read sheet 13 is transferred to the sheet conveyance means 21
is sent to the erasing section 4.
消去部４には螢光灯、タングステンランプ、ナ
トリウムランプ、クセノンランプ、ヨウ素ランプ
等の消去用光源２４１が多数設けられ、シート１
３は消去用光源２４１による光照射を受けてシー
ト上の残存放射線エネルギーの放出が行なわれ
る。 The erasing section 4 is provided with a large number of erasing light sources 241 such as fluorescent lamps, tungsten lamps, sodium lamps, xenon lamps, and iodine lamps.
3 receives light irradiation from the erasing light source 241, and the residual radiation energy on the sheet is emitted.
消去済シートはシート搬送手段２１により矢印
L6，L7方向に送られる。 The erased sheet is moved to the arrow by the sheet conveying means 21.
Sent in the L 6 and L 7 directions.
消去済みのシートが再び画像記録部１に向けて
搬送されると、画像記録部１の前記シート保持手
段１４を保持するハウジング１４１は矢印ｂ方向
に移動され、ハウジング１４１の移動によりシー
ト保持手段１４の他部（図中右側部分）は第１図
においてハウジング１４１の右方に配されたシー
ト搬送手段２１の終端（搬送通路２の終端）に接
続せしめられる。さらに前記搬送ローラ１４５Ｂ
が矢印方向に回転して、シート１３は前記搬送通
路２の終端からハウジング１４１に設けられたシ
ート搬入用開口１４４Ｂを通つて画像記録部内に
搬入され、該記録部内のシート保持手段１４に受
け渡される。シート１３の画像記録部内への搬入
が終了するとハウジング１４１は必要に応じて矢
印ａ方向に移動され、撮影の種類に応じた撮影開
始位置に持ち来たされ、撮影が行なわれる。撮影
が終了するとハウジング１４１は再び矢印ａ方向
に移動されて、前述のようにシート保持手段１４
１が画像記録部外のシート搬送手段に接続せしめ
られ、シートが画像記録部外に搬送され、画像読
取部、消去部に順に送られ、画像記録、画像読取
り、消去が循環して行なわれる。 When the erased sheet is again conveyed toward the image recording section 1, the housing 141 that holds the sheet holding means 14 of the image recording section 1 is moved in the direction of arrow b, and the movement of the housing 141 causes the sheet holding means 14 to be moved. The other portion (the right side portion in the figure) is connected to the terminal end of the sheet conveying means 21 (the terminal end of the conveying path 2) disposed on the right side of the housing 141 in FIG. Furthermore, the conveyance roller 145B
rotates in the direction of the arrow, and the sheet 13 is carried into the image recording section from the end of the conveyance path 2 through the sheet carrying opening 144B provided in the housing 141, and is delivered to the sheet holding means 14 in the recording section. It can be done. When the conveyance of the sheet 13 into the image recording section is completed, the housing 141 is moved in the direction of the arrow a as necessary and brought to a photographing start position according to the type of photographing, and photographing is performed. When the photographing is completed, the housing 141 is moved again in the direction of the arrow a, and the sheet holding means 14 is moved as described above.
1 is connected to a sheet conveying means outside the image recording section, the sheet is conveyed outside the image recording section, and then sent to an image reading section and an erasing section in order, and image recording, image reading, and erasing are performed in a circular manner.
なお、本発明に係る装置は上述のように断層撮
影用の画像記録部と画像読取部、消去部を同一の
装置内に組み込みシートを各部間で循環させるこ
とを要旨とするものであり、各部およびシート搬
送手段の配置は上記の実施態様において示したも
のに限られるものではない。 As mentioned above, the device according to the present invention is designed to incorporate an image recording section for tomography, an image reading section, and an erasing section into the same device, and circulate the sheet between each section. Also, the arrangement of the sheet conveying means is not limited to that shown in the above embodiments.
例えば第４図にシートの搬送径路を矢印で示す
ように画像記録部１内において記録済のシートを
Ｕターンさせてから画像記録部から搬出し画像読
取部３、消去部４へ搬送するようにして、画像記
録部のシート搬入用開口１４４Ｂとシート搬出用
開口１４４Ａを画像記録部の同一面上に設けても
よい。 For example, as shown in FIG. 4, the recorded sheet is made a U-turn in the image recording section 1 as shown by the arrow indicating the conveyance path of the sheet, and then carried out from the image recording section and conveyed to the image reading section 3 and the erasing section 4. The sheet carrying-in opening 144B and the sheet carrying-out opening 144A of the image recording section may be provided on the same surface of the image recording section.
（発明の効果）
以上詳細に説明したように、本発明の装置によ
れば、ビルト・イン・タイプの装置において断層
撮影を行なうことができるので断層撮影、読取
り、消去を順次自動的に能率良く行なうことが可
能となる。その結果シートの取扱いが極めて簡単
になるとともにシートを繰り返し使用して多くの
被写体の断層撮影を連続的かつ能率良く行なうこ
とができる。(Effects of the Invention) As explained in detail above, according to the device of the present invention, tomography can be performed in a built-in type device, so tomography, reading, and erasing can be performed automatically and efficiently in sequence. It becomes possible to do so. As a result, handling of the sheet becomes extremely simple, and the sheet can be used repeatedly to perform continuous and efficient tomography of many objects.
また、本発明の装置は、断層撮影可能なビル
ト・イン・タイプの装置を構成するにあたつて、
上述の様に画像記録部（断層撮影部）を画像読取
部や消去部が設けられた搬送通路上には設けず、
該搬送通路を形成するシート搬送手段とは別個に
独立させて設けている。 Furthermore, in constructing a built-in type device capable of tomography, the device of the present invention includes the following:
As mentioned above, the image recording section (tomography section) is not installed on the conveyance path where the image reading section and the erasing section are provided.
It is provided separately and independently from the sheet conveyance means forming the conveyance path.
もし断層撮影部を画像読取部や消去部と一緒に
上記シート搬送手段によるシート搬送通路上に設
けた場合には、円軌道方式や渦巻軌道方式の断層
撮影も行おうとすると、断層撮影部部分において
シートをシート搬送通路による搬送方向のみでな
く該搬送方向に対して直角な方向にも移動可能と
しなければならず、シート搬送手段の一部をその
様に構成するのは面倒でありかつシート搬送手段
が大形化し、装置全体の構造が複雑化するという
問題が生じる。 If the tomography section is installed together with the image reading section and the erasing section on the sheet conveyance path of the sheet conveyance means, and when trying to perform tomography using a circular orbit method or a spiral orbit method, the tomography section will It is necessary to be able to move the sheet not only in the direction of conveyance through the sheet conveyance path, but also in a direction perpendicular to the conveyance direction, and configuring part of the sheet conveyance means in this way is troublesome, and it is difficult to convey the sheet. Problems arise in that the means become larger and the structure of the entire device becomes more complicated.
しかるに、上記本装置によれば、断層撮影部を
画像読取部および消去部が設けられたシート搬送
手段（シート搬送通路）上には設けず、該シート
搬送手段とは別個に独立させて設けて成るので、
上記断層撮影部は該部単独で断層撮影に必要なシ
ート移動をさせればよくその移動機構を簡単に構
成することができ、またシート搬送手段も断層撮
影のためのシート移動をさせる必要がないので該
搬送手段の構造を簡素化でき、それによつて上記
円軌道方式や渦巻軌道方式の断層撮影も装置全体
の構造の複雑化を招来することなく簡単な構造の
装置で実施可能である。 However, according to the present apparatus, the tomography section is not provided on the sheet conveying means (sheet conveying path) in which the image reading section and the erasing section are provided, but is provided separately and independently from the sheet conveying means. Because it becomes,
The above-mentioned tomography section only needs to move the sheet necessary for tomography by itself, and its moving mechanism can be easily configured, and there is no need for the sheet conveying means to move the sheet for tomography. Therefore, the structure of the conveying means can be simplified, and thereby the circular orbit type or spiral orbit type tomography can be carried out with an apparatus having a simple structure without complicating the overall structure of the apparatus.
さらに、本装置における上記シート搬送手段は
複数枚の蓄積性螢光体シートを互いに独立して搬
送可能に構成されており、従つて上記画像読取部
と消去部とではシートの搬送速度や搬送するか否
か等の搬送条件を異ならせることができ、それに
よつて搬送条件が異なる画像読取部と消去部とで
同時に読取と消去を行うことができ、読取消去時
間を大巾に短縮可能であると共に、シートの搬送
を適宜調整することにより撮影と読取と消去とを
互いに無関係に自由なタイミングで行うことがで
き、もつて撮影読取消去の能率を大巾に向上させ
ることができる。 Furthermore, the sheet conveying means in this apparatus is configured to be able to convey a plurality of stimulable phosphor sheets independently of each other, and therefore the image reading section and the erasing section are configured to adjust the sheet conveyance speed and conveyance speed. The conveyance conditions such as whether or not the image is conveyed can be made different, and thereby the image reading section and the erasing section, which have different conveyance conditions, can simultaneously perform reading and erasing, and the reading and erasing time can be greatly shortened. At the same time, by appropriately adjusting the conveyance of the sheet, photographing, reading, and erasing can be performed at any timing independently of each other, thereby greatly improving the efficiency of photographing, reading, and erasing.
第１図は本発明に係る装置の一実施態様を示す
側面概略図、第２図は第１図に示す装置の画像記
録部を示す正面概略図、第３図は撮影装置駆動手
段の平面概念図、第４図は本発明の他の実施態様
におけるシートの搬送径路を示す概略図、第５図
はシート保持手段に保持されたシートを示す平面
図である。
１……画像記録部、２……搬送通路、３……画
像読取部、４……消去部、５……遮光ハウジン
グ、７……放射線遮蔽板、１１……放射線源、１
２……被写体、１２ａ……任意断層面、１３……
蓄積性螢光体シート、１４……シート保持手段、
２１……シート搬送手段、１４１……ハウジン
グ、１４４Ａ……シート搬出用開口、１４４Ｂ…
…シート搬入用開口、１４５Ａ，１４５Ｂ……搬
送ローラ、２３１……励起光、２３２……励起光
源、２３３……光電読取手段。
FIG. 1 is a schematic side view showing an embodiment of the device according to the present invention, FIG. 2 is a schematic front view showing the image recording section of the device shown in FIG. 1, and FIG. 3 is a plan view of the photographing device driving means. FIG. 4 is a schematic view showing a sheet conveyance path in another embodiment of the present invention, and FIG. 5 is a plan view showing a sheet held by sheet holding means. DESCRIPTION OF SYMBOLS 1... Image recording section, 2... Transport path, 3... Image reading section, 4... Erasing section, 5... Light-shielding housing, 7... Radiation shielding plate, 11... Radiation source, 1
2...Subject, 12a...Arbitrary tomographic plane, 13...
stimulable phosphor sheet, 14... sheet holding means,
21...Sheet transport means, 141...Housing, 144A...Sheet delivery opening, 144B...
...Sheet carrying-in opening, 145A, 145B... Conveying rollers, 231... Excitation light, 232... Excitation light source, 233... Photoelectric reading means.
Claims (1)
積性螢光体シートを所定の搬送通路に沿つて互い
に独立して搬送可能なシート搬送手段、 前記シートに被写体を通して放射線を照射する
ことにより、このシート上に被写体の放射線画像
情報を蓄積記録する画像記録部、 前記搬送通路にあつて、前記画像記録部におい
て放射線画像情報が蓄積記録されたシートを走査
する励起光を発する励起光源と、この励起光によ
り走査されたシートから発せられた輝尽発光光を
読み取つて画像信号を得る光電読取手段とを有す
る画像読取部、および 前記搬送通路にあつて、前記画像読取部におい
て画像読取が行なわれた後のシートに画像記録が
なされるのに先行してこのシート上の残存放射線
エネルギーを放出させる消去部からなり、 前記画像記録部が、放射線源と、前記被写体を
透過した前記放射線源からの放射線を受ける位置
に前記蓄積性螢光体シートを保持するシート保持
手段とを備え、 画像記録時に前記放射線源と前記シート保持手
段とは、前記被写体の任意断層面を中心として放
射線源とシート保持手段に保持されたシートとが
直線定則と等比定則とをほぼ満足するように相対
移動せしめられ、 非記録時に、前記シート保持手段の一部が前記
搬送通路の始端と、他部が前記搬送通路の終端と
連結して前記シートを前記終端から前記シート保
持手段に、該シート保持手段から前記始端に受け
渡し可能とされ、このシート保持手段と前記シー
ト搬送手段とで前記シートを循環搬送可能に構成
されていることを特徴とする放射線画像情報記録
読取装置。[Scope of Claims] 1. A sheet conveyance means capable of conveying a plurality of stimulable phosphor sheets capable of accumulating and recording radiation image information along a predetermined conveyance path, independently of each other; an image recording section that accumulates and records radiation image information of the subject on the sheet by irradiating the image; an image reading section having an excitation light source and a photoelectric reading means for reading stimulated luminescence light emitted from a sheet scanned by the excitation light to obtain an image signal; The image recording section includes an erasing section that releases residual radiation energy on the sheet prior to recording an image on the sheet after image reading, and the image recording section includes a radiation source that passes through the radiation source and the object. sheet holding means for holding the stimulable phosphor sheet at a position that receives radiation from the radiation source, and when recording an image, the radiation source and the sheet holding means are arranged to hold the stimulable phosphor sheet at a position centered on an arbitrary tomographic plane of the subject. The radiation source and the sheet held by the sheet holding means are moved relative to each other so as to substantially satisfy the linear law and the geometric law, and when non-recording, a part of the sheet holding means is connected to the starting end of the conveying path; Another part is connected to the terminal end of the conveying path so that the sheet can be transferred from the terminal end to the sheet holding means and from the sheet holding means to the starting end, and the sheet holding means and the sheet conveying means can transfer the sheet to the sheet holding means. What is claimed is: 1. A radiation image information recording/reading device configured to be able to circulate and transport.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22614784A JPS61103144A (en) | 1984-10-27 | 1984-10-27 | Recording and reading device of radiation picture information |
| EP85113138A EP0181520B1 (en) | 1984-10-16 | 1985-10-16 | Radiation image recording and read-out apparatus |
| US06/787,849 US4762999A (en) | 1984-10-16 | 1985-10-16 | Radiation image recording and read-out apparatus |
| DE8585113138T DE3585772D1 (en) | 1984-10-16 | 1985-10-16 | DEVICE FOR RECORDING AND READING OUT A RADIATION IMAGE. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22614784A JPS61103144A (en) | 1984-10-27 | 1984-10-27 | Recording and reading device of radiation picture information |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61103144A JPS61103144A (en) | 1986-05-21 |
| JPH0578820B2 true JPH0578820B2 (en) | 1993-10-29 |
Family
ID=16840592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22614784A Granted JPS61103144A (en) | 1984-10-16 | 1984-10-27 | Recording and reading device of radiation picture information |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61103144A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5866934A (en) * | 1981-10-16 | 1983-04-21 | Fuji Photo Film Co Ltd | Radiation picture information recording and reading device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57136936U (en) * | 1981-02-23 | 1982-08-26 |
-
1984
- 1984-10-27 JP JP22614784A patent/JPS61103144A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5866934A (en) * | 1981-10-16 | 1983-04-21 | Fuji Photo Film Co Ltd | Radiation picture information recording and reading device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61103144A (en) | 1986-05-21 |
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