JPH09201352A5 - - Google Patents
Info
- Publication number
- JPH09201352A5 JPH09201352A5 JP1996245942A JP24594296A JPH09201352A5 JP H09201352 A5 JPH09201352 A5 JP H09201352A5 JP 1996245942 A JP1996245942 A JP 1996245942A JP 24594296 A JP24594296 A JP 24594296A JP H09201352 A5 JPH09201352 A5 JP H09201352A5
- Authority
- JP
- Japan
- Prior art keywords
- ray tube
- predetermined direction
- ray
- shift
- rays
- 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
Claims (5)
該Ｘ線管を所定方向に位置制御可能なＸ線管駆動機構と、
Ｘ線管からの放射Ｘ線をファンビーム化するコリメータと、
Ｘ線管と対向して配置され、被検体を搭載する天板の周囲を前記Ｘ線管および前記Ｘ線管駆動機構とともに回転しながら上記被検体を透過したＸ線を計測する多チャネルＸ線検出器と、
上記多チャネルＸ線検出器が出力する計測信号を処理して画像構成を行なう処理手段とからなるＸ線ＣＴ装置。an X-ray tube for emitting X-rays;
an X-ray tube drive mechanism capable of controlling the position of the X-ray tube in a predetermined direction;
a collimator that converts the X-rays emitted from the X-ray tube into a fan beam;
a multi-channel X-ray detector disposed opposite the X-ray tube and rotating together with the X-ray tube and the X-ray tube drive mechanism around a tabletop on which a subject is placed, and measuring X-rays that have passed through the subject;
and processing means for processing measurement signals output from the multi-channel X-ray detector to construct an image.
上記計測前の上記Ｘ線管立ち上げ時には上記所定方向シフトが検出されないように上記モニター用Ｘ線検出器の手段を調整する手段と、を備え、
上記計測時に上記所定方向シフトが発生した場合には、上記Ｘ線管駆動機構は上記Ｘ線管を上記所定方向に位置制御して上記所定方向シフトを補正することを特徴とする請求項１に記載のＸ線ＣＴ装置。a monitor X-ray detector capable of detecting a shift in the predetermined direction of the fan beam X-rays;
means for adjusting the monitor X-ray detector means so that the shift in the predetermined direction is not detected when the X-ray tube is started up before the measurement;
2. The X-ray CT apparatus according to claim 1, wherein, if the shift in the predetermined direction occurs during the measurement, the X-ray tube drive mechanism controls the position of the X-ray tube in the predetermined direction to correct the shift in the predetermined direction.
Ｘ線管からの放射Ｘ線をファンビーム化するコリメータと、
該コリメータの開口位置を所定方向に位置制御可能なコリメータ駆動機構と、
Ｘ線管と対向して配置され、被検体を搭載する天板の周囲を前記Ｘ線管および前記Ｘ線管駆動機構とともに回転しながら上記被検体を透過したＸ線を計測する多チャネルＸ線検出器と、
上記多チャネルＸ線検出器が出力する計測信号を処理して画像再構成を行なう処理手段とからなるＸ線ＣＴ装置において、
上記ファンビーム化したＸ線の上記所定方向におけるシフトを検出可能なモニ
ター用Ｘ線検出器と、
上記計測前のＸ線立ち上げ時においては上記所定方向シフトが検出されないように上記モニター用Ｘ線検出器の出力を調整する手段とを更に備え、
上記計測時に上記所定方向シフトが生じた場合には、上記コリメータ駆動機構は、上記コリメータ開口位置を上記所定方向に位置制御することで上記所定方向シフトを補正することを特徴とするＸ線ＣＴ装置。an X-ray tube that emits X-rays;
a collimator that converts the X-rays emitted from the X-ray tube into a fan beam;
a collimator drive mechanism capable of controlling the position of the opening of the collimator in a predetermined direction;
a multi-channel X-ray detector disposed opposite the X-ray tube and rotating together with the X-ray tube and the X-ray tube drive mechanism around a tabletop on which a subject is placed, and measuring X-rays that have passed through the subject;
and processing means for processing measurement signals output from the multi-channel X-ray detector to reconstruct an image,
a monitor X-ray detector capable of detecting a shift in the predetermined direction of the fan beam X-rays;
a means for adjusting an output of the monitor X-ray detector so that the shift in the predetermined direction is not detected when X-rays are turned on before the measurement,
When the shift in the predetermined direction occurs during the measurement, the collimator drive mechanism corrects the shift in the predetermined direction by controlling the position of the collimator opening in the predetermined direction.
該Ｘ線管を所定方向に位置制御可能なＸ線管駆動機構と、
上記Ｘ線管からの放射Ｘ線をファンビーム化するコリメータと、
該コリメータの開口位置を所定方向に位置制御可能なコリメータ駆動機構と、
Ｘ線管と対向して配置され、被検体を搭載する天板の周囲を前記Ｘ線管および前記Ｘ線管駆動機構とともに回転しながら上記被検体を透過したＸ線を計測する多チャネルＸ線検出器と、
上記多チャネルＸ線検出器が出力する計測信号を処理して画像再構成を行なう処埋手段とからなるＸ線ＣＴ装置において、
上記ファンビーム化したＸ線の上記所定方向におけるシフトを検出可能なモニター用Ｘ線検出器と、
上記計測前の上記Ｘ線管立ち上げ時には上記モニター用Ｘ線検出器からの所定方向シフトが検出されないようにＸ線検出器の出力を調整する手段とを更に備え、
上記計測時に上記所定方向シブトが発生した揚合には、Ｘ線管駆動機構および上記コリメータ駆動機構のうち少なくとも一方は、上記Ｘ線管を上記所定方向に位置制御したり上記コリメータの開ロ位置を上記所定方向に位置制御して上記所定方向シフトを補正することを特徴とするＸ線ＣＴ装置。an X-ray tube that emits X-rays;
an X-ray tube drive mechanism capable of controlling the position of the X-ray tube in a predetermined direction;
a collimator that converts the X-rays emitted from the X-ray tube into a fan beam;
a collimator drive mechanism capable of controlling the position of the opening of the collimator in a predetermined direction;
a multi-channel X-ray detector disposed opposite the X-ray tube and rotating together with the X-ray tube and the X-ray tube drive mechanism around a tabletop on which a subject is placed, and measuring X-rays that have passed through the subject;
and processing means for processing measurement signals output from the multi-channel X-ray detector to reconstruct an image,
a monitor X-ray detector capable of detecting a shift in the predetermined direction of the fan beam X-rays;
a means for adjusting an output of the X-ray detector so that a shift in a predetermined direction from the monitor X-ray detector is not detected when the X-ray tube is started up before the measurement,
When the shift in the predetermined direction occurs during the measurement, at least one of the X-ray tube drive mechanism and the collimator drive mechanism controls the position of the X-ray tube in the predetermined direction or controls the position of the opening of the collimator in the predetermined direction to correct the shift in the predetermined direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24594296A JP4010584B2 (en) | 1995-11-21 | 1996-09-18 | X-ray CT system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30250295 | 1995-11-21 | ||
| JP7-302502 | 1995-11-21 | ||
| JP24594296A JP4010584B2 (en) | 1995-11-21 | 1996-09-18 | X-ray CT system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH09201352A JPH09201352A (en) | 1997-08-05 |
| JPH09201352A5 true JPH09201352A5 (en) | 2004-09-16 |
| JP4010584B2 JP4010584B2 (en) | 2007-11-21 |
Family
ID=26537487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24594296A Expired - Fee Related JP4010584B2 (en) | 1995-11-21 | 1996-09-18 | X-ray CT system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4010584B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4700798B2 (en) * | 2000-10-25 | 2011-06-15 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | X-ray CT system |
| JP4535600B2 (en) * | 2000-11-09 | 2010-09-01 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | Collimator tracking control method and X-ray CT apparatus |
| JP2005143812A (en) * | 2003-11-14 | 2005-06-09 | Hitachi Medical Corp | X-ray computed tomograph |
| JP4818695B2 (en) * | 2005-11-18 | 2011-11-16 | パナソニック株式会社 | Radiographic imaging condition correction device |
| JP2007167388A (en) * | 2005-12-22 | 2007-07-05 | Hitachi Medical Corp | X-ray computer tomograph apparatus |
| CN108652654A (en) * | 2018-02-06 | 2018-10-16 | 赛诺威盛科技（北京）有限公司 | CT machine collimators quickly compensate localization method |
| JP7123702B2 (en) * | 2018-08-31 | 2022-08-23 | アンリツ株式会社 | X-ray inspection device |
-
1996
- 1996-09-18 JP JP24594296A patent/JP4010584B2/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4134020A (en) | Apparatus for measuring local absorption differences | |
| JP4508789B2 (en) | X-ray equipment | |
| US7798708B2 (en) | X-ray device and X-ray sensitive camera for panoramic tomography and 3D shots | |
| US4298799A (en) | Radiography | |
| US4181858A (en) | Adjustable compensating device for radiographic apparatus | |
| US5299250A (en) | Computer tomography apparatus with compensation for focus migration by adjustment of diaphragm position | |
| USRE32961E (en) | Device for measuring local radiation absorption in a body | |
| GB1577172A (en) | Tomographing device | |
| JP2753517B2 (en) | X-ray scanner calibration method and system using one or more circular eccentric phantoms | |
| JP3914601B2 (en) | A computer for a computed tomography system. | |
| EP0273670A3 (en) | Detection methods and apparatus for non-destructive inspection of materials with radiation | |
| JPH09201352A5 (en) | ||
| JPS5953055B2 (en) | medical radiography equipment | |
| US4053780A (en) | Method for calibration of an axial tomographic scanner | |
| US5317617A (en) | Method and apparatus for mounting the detector array of a CT scanner to a radiation therapy simulator | |
| US4845747A (en) | Apparatus for measuring density of vertebrae or the like | |
| US6304625B1 (en) | Dose instrumentation methods and apparatus for collimated CT imaging systems | |
| JP3638973B2 (en) | TCT / SPECT simultaneous collection system | |
| US11944473B2 (en) | Rotating collimator for an X-ray detection system | |
| US4206362A (en) | Medical radiographic apparatus | |
| KR20200025701A (en) | X-ray imaging apparatus and the control method thereof | |
| GB1571510A (en) | Radiography | |
| US4277687A (en) | Tomographic apparatus for producing transverse layer images | |
| KR102560621B1 (en) | Rotation limiting device and radiology apparatus with the same | |
| JPS6019113B2 (en) | Rotating electrical supply device and method for tomography scanning device |