JPS5812645A - X-ray television photographing apparatus - Google Patents
X-ray television photographing apparatusInfo
- Publication number
- JPS5812645A JPS5812645A JP56110336A JP11033681A JPS5812645A JP S5812645 A JPS5812645 A JP S5812645A JP 56110336 A JP56110336 A JP 56110336A JP 11033681 A JP11033681 A JP 11033681A JP S5812645 A JPS5812645 A JP S5812645A
- Authority
- JP
- Japan
- Prior art keywords
- region
- interest
- image
- ray
- subject
- 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
- 238000003384 imaging method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 102100024066 Coiled-coil and C2 domain-containing protein 1A Human genes 0.000 description 1
- 101000910423 Homo sapiens Coiled-coil and C2 domain-containing protein 1A Proteins 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Apparatus For Radiation Diagnosis (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Closed-Circuit Television Systems (AREA)
- X-Ray Techniques (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】
本発明は、被検体の関心領域を設定可能にした高解像度
X線テレビジョン撮像装置(以下「X線TV装置」とい
う)に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-resolution X-ray television imaging apparatus (hereinafter referred to as "X-ray TV apparatus") that allows setting of a region of interest of a subject.
従来のX線TV装置には、大きく分けて次の2つの方式
がある。Conventional X-ray TV devices can be roughly divided into the following two types.
(リ 被検体をX線TV装置で透視して、そのX線透視
像から関心領域を設定し、被検体の所定部位(例えば患
部)を決めてからフィルムに撮影を行う方式。(2) A method in which the subject is viewed through an X-ray TV device, a region of interest is set from the X-ray fluoroscopic image, and a predetermined area (for example, an affected area) of the subject is determined before being photographed on film.
(2)被検体をX線TV装置で透視し、そのX線透視像
を直接記憶装置に記憶する方式。(2) A method in which the subject is viewed through an X-ray TV device and the X-ray fluoroscopic image is directly stored in a storage device.
前記(1)の方式の場合、X線TV装置は単に関心領域
の位置決めだけに使用されるときと、動態検査に使用さ
れるときがあるが、X線被曝を最小限に押える必要性か
ら所定のX#照射線量を少なくしであるため、十分な画
質の映像を有していない。In the case of method (1) above, the X-ray TV device is sometimes used only for positioning the region of interest and sometimes for dynamic examination, but due to the need to minimize X-ray exposure, Since the X# irradiation dose is small, the image does not have sufficient image quality.
後者はフィルム撮影の際ダイナミックレンジが小さく十
分なコントラスト分解能が得られない問題があった。The latter had the problem of having a small dynamic range and not being able to obtain sufficient contrast resolution when shooting with film.
前記(2)の方式の場合、X線透視像のアナログ処理と
ディジタル処理の2通りがあるが、アナログ処理のとき
は、lフレームの記録でX線被曝を最小限に押えること
ができるが定量解析ができない問題があり、ディジタル
処理のときは、最小限のX線被曝量で1フレームの記録
及び定量解析も可能であるが、ビデオ信号のディジタル
処理には高、速の画像処理が必要であり、走査線を増加
して高解像度化をはかる際に、(a)高速のアナログ・
ディジタル変換素子及び大容量の記憶装置が必要となる
。また、(b)高帯域のだめS/Nが悪く、ダイナミッ
クレンジが制限される等の問題があった。In the case of method (2) above, there are two ways to process the X-ray fluoroscopic image: analog processing and digital processing.When using analog processing, X-ray exposure can be minimized by recording one frame, but it is not possible to quantify it. When using digital processing, it is possible to record and quantitatively analyze one frame with minimal X-ray exposure, but digital processing of video signals requires high-speed image processing. Yes, when increasing the number of scanning lines to increase resolution, (a) high-speed analog
A digital conversion element and a large capacity storage device are required. Further, (b) there were problems such as poor S/N ratio in high bands and limited dynamic range.
本発明は、前記問題を解消するためになされたものであ
り、その特徴は、被検体透過X線をイメージインテンシ
フ、イアで撮像し、該撮像された映像をテレビジョンカ
メラで撮像して記憶再生するX線テレビジョン撮像装置
において、被検体ノ関心領域を設定する手段と、前記テ
レビジョンカメラの撮像管及びモニタの偏向位置及び偏
向振幅を変化させ、前記関心領域のみを走査表示する手
段を備えたことにある。The present invention was made to solve the above problem, and its characteristics are that X-rays transmitted through the subject are imaged with an image intensity and an ear, and the imaged image is captured and stored with a television camera. An X-ray television imaging apparatus for reproduction includes means for setting a region of interest of a subject, and means for scanning and displaying only the region of interest by changing the deflection position and deflection amplitude of the image pickup tube and monitor of the television camera. It's about being prepared.
以下、実施例により本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail with reference to Examples.
第1図A、B、0は、本発明の詳細な説明するだめの図
であり、Aは、モニタ上に映出された被検体のX線透視
全体像、Bは、X線透視全体像Aの関心領域の設定像、
Cは、関心領域部分の高解像度拡大像である。FIGS. 1A, B, and 0 are diagrams for explaining the present invention in detail, where A is an overall X-ray fluoroscopic image of the subject displayed on a monitor, and B is an overall X-ray fluoroscopic image. A set image of the region of interest,
C is a high-resolution enlarged image of the region of interest.
(3)
本発明のX線テレビジョン撮像装置は、第1図Aに示す
ように、まず被検体の全体像をテレビジョンカメラによ
りモニタ上に映出し、その映像を見ながら関心領域設定
装置により、第1図Bに示すように、被検体の関心領域
を設定する。次に、前記テレビジョンカメラの撮像管及
びモニタの偏向位置及び偏向振幅を変化させ、前記関心
領域のみを走査し、モニタ上に、第1図Cに示すように
、関心領域の高解像度拡大像を映11けるようにする。(3) As shown in FIG. 1A, the X-ray television imaging apparatus of the present invention first projects an entire image of the subject on a monitor using a television camera, and then uses a region of interest setting device while viewing the image. , as shown in FIG. 1B, a region of interest of the subject is set. Next, by changing the deflection position and deflection amplitude of the image pickup tube of the television camera and the monitor, only the region of interest is scanned, and a high-resolution enlarged image of the region of interest is displayed on the monitor, as shown in FIG. 1C. Make it look like 11 times.
また、被検体の全体像と関心゛領域の高解像度拡大像は
、切換スイッチで一方のみを表示したシ、同時に表示し
たシすることができるようにする。これにより両者を対
応させて観察することができる。Furthermore, the entire image of the subject and the high-resolution enlarged image of the region of interest can be displayed either alone or simultaneously using a changeover switch. This allows the two to be observed in correspondence.
第2図は、本発明のX線テレビ′)ヨン撮像装置の一実
施例の構成を示す図である。FIG. 2 is a diagram showing the configuration of an embodiment of the X-ray television imaging apparatus of the present invention.
第2図において、1はX線管、2け被検体、3は被検体
2の透過X線像を可視光に変換するイメージインテンシ
ファイア、4はテレビジョンカメラ、5はアナログ・デ
ィジタル変換器、6は画像メモリ、7はディジタル・ア
ナログ変換器、8は(4)
陰極線管等のモニタ、9は被検体の関心領域設定装置、
10八〜10Dはディジタル・アナログ変換器、11は
テレビジョンカメラ4及びモニタ8の水平偏向回路、1
2はテレビジョンカメラ4及びモニタ8の垂直偏向回路
、13は水平垂直の同期をとるだめの同期信号発生器で
ある。In Figure 2, 1 is an X-ray tube, 2 objects to be examined, 3 is an image intensifier that converts the transmitted X-ray image of the object 2 into visible light, 4 is a television camera, and 5 is an analog-to-digital converter. , 6 is an image memory, 7 is a digital-to-analog converter, 8 is a monitor for (4) a cathode ray tube, etc., 9 is a region of interest setting device for a subject,
108 to 10D are digital-to-analog converters; 11 is a horizontal deflection circuit for the television camera 4 and monitor 8;
2 is a vertical deflection circuit for the television camera 4 and monitor 8; 13 is a synchronization signal generator for horizontal and vertical synchronization.
第3図は、第2図の関心領域設定装置9の具体的な回路
構成を示す図であシ、第2図と同一のものは同一記号を
付けである。第3図において、20は輝線信号発生器、
21は関心領域設定スイ。FIG. 3 is a diagram showing a specific circuit configuration of the region of interest setting device 9 of FIG. 2, and the same parts as in FIG. 2 are given the same symbols. In FIG. 3, 20 is a bright line signal generator;
21 is a region of interest setting switch.
チ群であシ、輝線X1設定用関心領域スイツチ21A、
輝線X2設定用関心領域スイ、チ21B。region of interest switch 21A for setting bright line X1;
Region of interest switch for setting bright line X2, 21B.
輝線Y1設定用関心領域スイッチ21C2輝線Y2設定
用関心領域スイ、チ21Dからなっている。It consists of a region of interest switch 21C for setting the bright line Y1, a region of interest switch 21C for setting the bright line Y2, and a region of interest switch 21D for setting the bright line Y2.
22〜25はカウンタ、26はクロ、クバルス発生器で
ある。22 to 25 are counters, and 26 is a clock generator.
次に、本実施例の動作を説明する。Next, the operation of this embodiment will be explained.
第2図において、X線管1からのX線は、被検体2を透
過してイメージインテンシファイア6に入射し、可視像
に変換されてイメージインテンシファイア3の出力面に
X線透視像として映出される。この出力面に映出された
X線透視像は、テレビジョンカメラ4により撮像され、
アナログビデオ信号として出力される。このアナログビ
デオ信号は、アナログ・ディジタル変換器5でディジタ
ル信号に変換されて画像メモリ6に記憶される。In FIG. 2, X-rays from an X-ray tube 1 pass through a subject 2 and enter an image intensifier 6, where they are converted into a visible image and displayed on the output surface of an image intensifier 3. displayed as an image. The X-ray fluoroscopic image projected on this output surface is captured by the television camera 4,
Output as an analog video signal. This analog video signal is converted into a digital signal by an analog-to-digital converter 5 and stored in an image memory 6.
画像メモリ6に記憶されたディジタル信号は、ディジタ
ル・アナログ変換器7でアナログビデオ信号に変換され
、モニタ8に被検体2のX線透視全体像が映出される。The digital signal stored in the image memory 6 is converted into an analog video signal by a digital-to-analog converter 7, and an entire X-ray fluoroscopic image of the subject 2 is displayed on a monitor 8.
次にこのX線透視全体像を観察しながら、第3図に示す
関心領域設定装置9の関心領域設定スイッチ21A〜2
1■)を操作してX線透視全体像の関心領域を設定する
。即ち、輝線X1設定用関心領域スイ、チ21Aを右又
は左方向のいずれかに倒すと、カウンタ22はクロ。Next, while observing the entire X-ray fluoroscopic image, the region of interest setting switches 21A to 2 of the region of interest setting device 9 shown in FIG.
1)) to set the region of interest for the entire X-ray fluoroscopic image. That is, when the region of interest switch 21A for setting the bright line X1 is tilted to either the right or left direction, the counter 22 is set to black.
クハルス発生器26からのクロックパルスによりカウン
トを開始する。このとき、カウンタ22はX1設定用関
心領域スイツチ21Aを右に倒すとカウントア、プ、左
に倒すとカウントダウンするものである。前記カウンタ
22によυカウントされだ出力信号は、画像メモリ6の
スタート番地を決めるものであり、輝線信号発生器20
は、カウンタ22の出力信号でX線透視像の縦ラインに
相当する画像メモリ6内を一定データに書き換え、第1
図Bに示すように、輝線X1をモニタ8上に映出する。Counting is started by a clock pulse from Kuhars generator 26. At this time, the counter 22 counts up when the X1 setting region of interest switch 21A is pushed to the right, and counts down when pushed to the left. The output signal counted by the counter 22 determines the start address of the image memory 6, and is used by the bright line signal generator 20.
The output signal of the counter 22 rewrites the image memory 6 corresponding to the vertical line of the X-ray fluoroscopic image to constant data, and the first
As shown in FIG. B, the bright line X1 is displayed on the monitor 8.
同様にして輝線X2設定用関心領域スイ、チク1B、輝
線Y輝線X2設定用関心領域スイ1C1輝線Y2設輝線
X2設定用関心領域スイツチれぞれ右又は左方向、上又
は下方向のいずれかに倒すことにより、画像メモリ6内
をそれぞれに対応した一定データに書き換え、第1図B
に示すように輝線X2.輝線Y1.輝線Y2をモニタ8
上に映出する。In the same way, switch the region of interest switch for setting bright line X2, switch 1B, switch the region of interest switch for setting bright line Y bright line By turning the image memory 6 upside down, the contents of the image memory 6 are rewritten to the corresponding constant data, and as shown in FIG.
As shown in the bright line X2. Bright line Y1. Monitor bright line Y2 8
Projected on top.
次に、前記関心領域設定装置9の輝線信号発生器20は
、指定されたアドレスから水平、垂直偏向回路11.1
2のゲインとバイアス分を計算し、その計算値をディジ
タル・アナログ変換器10A〜10Dでアナログ信号に
変換して水平、垂直偏向回路11.12にそれぞれ入力
される。これにより、テレビジョンカメラ4は被検体2
の関心領域の部分のみを同じ走査線数(例えば、512
本)で走査し、これに同期してモニタ8の全面上に拡大
された高解像度の関心領域部分のX線透視像が得られる
。このX線透視像をフィルム像に記録したいときは、こ
れのフィルム撮影を行う。Next, the bright line signal generator 20 of the region of interest setting device 9 operates from the specified address to the horizontal and vertical deflection circuits 11.1.
2, and the calculated values are converted into analog signals by digital-to-analog converters 10A to 10D and input to horizontal and vertical deflection circuits 11 and 12, respectively. As a result, the television camera 4 detects the subject 2.
The same number of scan lines (e.g., 512
In synchronization with this, a high-resolution X-ray fluoroscopic image of the region of interest enlarged on the entire surface of the monitor 8 is obtained. When it is desired to record this X-ray fluoroscopic image on film, it is photographed on film.
以上説明したように、本発明によれば、被検体の関心領
域のコントラスト分解能のよい高解像度拡大画像が得ら
れる。また、画像メモリ容量の増大及び高速画像処理素
子を使用することなく高速の画像処理が可能となる。As described above, according to the present invention, a high-resolution enlarged image with good contrast resolution of a region of interest of a subject can be obtained. Furthermore, high-speed image processing is possible without increasing the image memory capacity and without using a high-speed image processing element.
第1図は、本発明の詳細な説明するだめの図、第2図は
、本発明の一実施例の構成を示す図、第3図は、第2図
の関心領域設定装置の具体的な回路構成を示す図である
。
1 ・X線管 2 被検体
3−イメージインテンシファイア
4、テレビジョンカメラ
5 アナログ・ディジタル変換器
′6・画像メモリ
7 ディジタル・アナログ変換器
8 モニタ
9・関心領域設定装置
10A〜10D ディジタル・アナログ変換器11 水
平偏向回路
12 垂直偏向回路
16 同期信号発生器
代理人 弁理士 秋 1)収 喜
第1図
(A) (B) (C)
#2図FIG. 1 is a detailed explanation diagram of the present invention, FIG. 2 is a diagram showing the configuration of an embodiment of the present invention, and FIG. 3 is a diagram showing a specific example of the region of interest setting device of FIG. FIG. 3 is a diagram showing a circuit configuration. 1 - X-ray tube 2 Subject 3 - Image intensifier 4, television camera 5 Analog-to-digital converter '6 - Image memory 7 Digital-to-analog converter 8 Monitor 9 - Region of interest setting device 10A to 10D Digital-to-analog Converter 11 Horizontal deflection circuit 12 Vertical deflection circuit 16 Synchronizing signal generator agent Patent attorney Aki 1) Figure 1 (A) (B) (C)
#2 Figure
Claims (1)
、該撮像された映像をテレビジョンカメラで撮像して記
憶再生するX線テレビジョン撮像装置において、被検体
の関心領域を設定する手段と、前記テレビジョンカメラ
の撮像管の偏向位置及び偏向振幅を変化させ、前記関心
領域のみを走査する手段を備えたことを特徴とするX線
テレビジ。ン撮像装置。In an X-ray television imaging apparatus that images X-rays transmitted through a subject with an image intensifier, and captures and stores and reproduces the captured image with a television camera, means for setting a region of interest of the subject; An X-ray television set comprising means for scanning only the region of interest by changing the deflection position and deflection amplitude of an image pickup tube of the television camera. imaging device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56110336A JPS5812645A (en) | 1981-07-15 | 1981-07-15 | X-ray television photographing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56110336A JPS5812645A (en) | 1981-07-15 | 1981-07-15 | X-ray television photographing apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5812645A true JPS5812645A (en) | 1983-01-24 |
JPH0241332B2 JPH0241332B2 (en) | 1990-09-17 |
Family
ID=14533163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56110336A Granted JPS5812645A (en) | 1981-07-15 | 1981-07-15 | X-ray television photographing apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5812645A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60151744A (en) * | 1983-11-14 | 1985-08-09 | エルシント リミテツド | Digital fluorescent photographic apparatus |
JPS60212072A (en) * | 1984-04-05 | 1985-10-24 | Mitsubishi Electric Corp | X-ray television device |
JPS61244184A (en) * | 1985-04-23 | 1986-10-30 | Hitachi Ltd | Digital data converting system |
JP2002263089A (en) * | 2001-03-06 | 2002-09-17 | Shimadzu Corp | Digital type x-ray photographic apparatus |
JP2019126654A (en) * | 2018-01-26 | 2019-08-01 | 富士フイルム株式会社 | Image processing device, image processing method, and program |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502204A (en) * | 1973-05-15 | 1975-01-10 | ||
JPS5338183A (en) * | 1976-09-21 | 1978-04-07 | Stanford Research Inst | Real time ultrasonic b scanning video and doppler profile display system and method therefor |
JPS5673988A (en) * | 1979-11-21 | 1981-06-19 | Toshiba Corp | X-ray television device |
-
1981
- 1981-07-15 JP JP56110336A patent/JPS5812645A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502204A (en) * | 1973-05-15 | 1975-01-10 | ||
JPS5338183A (en) * | 1976-09-21 | 1978-04-07 | Stanford Research Inst | Real time ultrasonic b scanning video and doppler profile display system and method therefor |
JPS5673988A (en) * | 1979-11-21 | 1981-06-19 | Toshiba Corp | X-ray television device |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60151744A (en) * | 1983-11-14 | 1985-08-09 | エルシント リミテツド | Digital fluorescent photographic apparatus |
JPH0552215B2 (en) * | 1983-11-14 | 1993-08-04 | Elscint Ltd | |
JPS60212072A (en) * | 1984-04-05 | 1985-10-24 | Mitsubishi Electric Corp | X-ray television device |
JPS61244184A (en) * | 1985-04-23 | 1986-10-30 | Hitachi Ltd | Digital data converting system |
JP2002263089A (en) * | 2001-03-06 | 2002-09-17 | Shimadzu Corp | Digital type x-ray photographic apparatus |
JP2019126654A (en) * | 2018-01-26 | 2019-08-01 | 富士フイルム株式会社 | Image processing device, image processing method, and program |
Also Published As
Publication number | Publication date |
---|---|
JPH0241332B2 (en) | 1990-09-17 |
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