JP4510754B2 - X線コンピュータ断層撮影装置 - Google Patents
X線コンピュータ断層撮影装置 Download PDFInfo
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- JP4510754B2 JP4510754B2 JP2005364491A JP2005364491A JP4510754B2 JP 4510754 B2 JP4510754 B2 JP 4510754B2 JP 2005364491 A JP2005364491 A JP 2005364491A JP 2005364491 A JP2005364491 A JP 2005364491A JP 4510754 B2 JP4510754 B2 JP 4510754B2
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- 238000002591 computed tomography Methods 0.000 title claims description 76
- 238000007493 shaping process Methods 0.000 claims description 21
- 238000000465 moulding Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 241000234295 Musa Species 0.000 description 2
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000001629 suppression Effects 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4275—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis using a detector unit almost surrounding the patient, e.g. more than 180°
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4021—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
- A61B6/4028—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot resulting in acquisition of views from substantially different positions, e.g. EBCT
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/40—Imaging
- G01N2223/419—Imaging computed tomograph
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/612—Specific applications or type of materials biological material
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- High Energy & Nuclear Physics (AREA)
- Animal Behavior & Ethology (AREA)
- Biophysics (AREA)
- Public Health (AREA)
- Optics & Photonics (AREA)
- Pulmonology (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Measurement Of Radiation (AREA)
Description
回転可能な支持枠に配置された成形要素の1つは、システム軸線方向へのX線ビームの広がりを制限するZコリメータであり、
Zコリメータは少なくとも2つの平行な制限薄板を有し、2つの平行な制限薄板の間をX線ビームが通過し、X線ビームによってX線検出器上に投影された制限薄板の縁は、この縁の投影がX線検出器の検出器列の辺の形状と少なくともほぼ一致するように成形されていることによって解決される。
図1は公知の第5世代のコンピュータ断層撮影装置における固定のZコリメータによるX線ビーム投影の歪みを概略図で示し、
図2は本発明によるコンピュータ断層撮影装置の構成例を概略図で示し、
図3は本発明による回転可能な支持枠における成形要素の配置例を示し、
図4は図3のZコリメータおよび蝶ネクタイ形フィルタの部分斜視図を示し、
図5は検出器上へのX線ビームのZコリメータで調整された投影を示し、
図6は図3の散乱X線除去用グリッドの部分斜視図を示し、
図7は本発明の他の構成によるコンピュータ断層撮影装置の一部を例示し、
図8は図7による構成の詳細図を示す。
2 検出器列
3 X線発生装置
4 ターゲット
5 電子ビーム
6 電子銃
7 X線検出器
8 患者寝台テーブル
9 支持枠
10 散乱X線除去用グリッド
11 ファイおよびZコリメータ
12 X線焦点
13 ファイコリメータ
14 蝶ネクタイ形フィルタ
15 X線ビーム
16 Zコリメータ
17 薄板
18 レーザ光線
19 回転遮蔽板
20 コリメータレンズ
21 電子源リング
Claims (6)
- X線発生装置(3)を備え、X線発生装置(3)により、コンピュータ断層撮影装置の検査空間を一平面内で少なくとも部分的に包囲するターゲット(4)上に検査空間の周りを移動するX線焦点(12)が発生可能であり、X線焦点(12)からX線ビーム(15)が、検査空間を通して、検査空間を少なくとも部分的に包囲する固定のX線検出器(7)のその都度瞬間に対向位置する検出器要素に向けられ、X線ビーム(15)の1つ又は複数のX線パラメータに影響を与えるための1つ又は複数の成形要素(10,11,13,14,16)がターゲット(4)と検出器要素との間に配置され、1つ又は複数の成形要素(10,11,13,14,16)が、X線焦点(12)の移動に同期してシステム軸線の周りを回転可能な支持枠(9)に配置されているX線コンピュータ断層撮影装置において、
回転可能な支持枠(9)に配置された成形要素(10,11,13,14,16)の1つは、システム軸線方向へのX線ビーム(15)の広がりを制限するZコリメータ(16)であり、
Zコリメータ(16)は少なくとも2つの平行な制限薄板(17)を有し、2つの平行な制限薄板(17)の間をX線ビーム(15)が通過し、X線ビーム(15)によってX線検出器(7)上に投影された制限薄板(17)の縁は、この縁の投影がX線検出器(7)の検出器列(2)の辺の形状とほぼ一致するように成形されている
ことを特徴とするX線コンピュータ断層撮影装置。 - 回転可能な支持枠(9)に配置された1つ又は複数の成形要素(10,11,13,14,16)は、X線ビーム(15)の開き角度を制限すること、X線ビーム(15)の強度分布へ影響を及ぼすこと、およびX線検出器(7)のための散乱X線除去用グリッド(10)を形成すること、の内の少なくとも1つを行なうことを特徴とする請求項1記載のX線コンピュータ断層撮影装置。
- 回転可能な支持枠(9)に配置された成形要素(10,11,13,14,16)の1つは、システム軸線に対して垂直な一平面内におけるX線ビーム(15)の開き角度を制限するファイコリメータ(13)であることを特徴とする請求項1又は2記載のX線コンピュータ断層撮影装置。
- 回転可能な支持枠(9)に配置された成形要素(10,11,13,14,16)の1つは、蝶ネクタイ形フィルタであることを特徴とする請求項1乃至3の1つに記載のX線コンピュータ断層撮影装置。
- ターゲット(4)に対して同軸に配置された電子源リング(21)のために回転遮蔽板(19)が回転可能な支持枠(9)に取付けられ、回転遮蔽板(19)は、その1個所に電子源リング(21)へ至る光線(18)のための貫通窓を有することを特徴とする請求項1乃至4の1つに記載のX線コンピュータ断層撮影装置。
- 貫通窓は、電子源リング(21)上へ光線(18)を集束させるためのコリメートレンズ(20)として構成されていることを特徴とする請求項5記載のX線コンピュータ断層撮影装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004061347A DE102004061347B3 (de) | 2004-12-20 | 2004-12-20 | Röntgen-Computertomograph für schnelle Bildaufzeichung |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006175230A JP2006175230A (ja) | 2006-07-06 |
JP4510754B2 true JP4510754B2 (ja) | 2010-07-28 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2005364491A Expired - Fee Related JP4510754B2 (ja) | 2004-12-20 | 2005-12-19 | X線コンピュータ断層撮影装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7340029B2 (ja) |
JP (1) | JP4510754B2 (ja) |
CN (1) | CN1792330A (ja) |
DE (1) | DE102004061347B3 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7692156B1 (en) | 2006-08-23 | 2010-04-06 | Radiation Monitoring Devices, Inc. | Beam-oriented pixellated scintillators for radiation imaging |
DE102007035177A1 (de) * | 2007-07-27 | 2009-02-05 | Siemens Ag | Computertomographie-System mit feststehendem Anodenring |
DE102007036038A1 (de) | 2007-08-01 | 2009-02-05 | Siemens Ag | Röntgen-Computertomograph der 5ten Generation |
FR2926924B1 (fr) * | 2008-01-25 | 2012-10-12 | Thales Sa | Source radiogene comprenant au moins une source d'electrons associee a un dispositif photoelectrique de commande |
US9271689B2 (en) * | 2010-01-20 | 2016-03-01 | General Electric Company | Apparatus for wide coverage computed tomography and method of constructing same |
WO2011089528A2 (en) * | 2010-01-22 | 2011-07-28 | DenCT Ltd | Methods and apparatus for multi-camera x-ray flat panel detector |
CN102258372A (zh) * | 2010-05-24 | 2011-11-30 | 北京核海高技术有限公司 | 使用图象迭加技术检测骨矿物密度值 |
JP6026103B2 (ja) | 2011-01-07 | 2016-11-16 | 東芝メディカルシステムズ株式会社 | X線ct装置 |
JP5850059B2 (ja) * | 2011-10-04 | 2016-02-03 | 株式会社ニコン | X線を用いた形状測定装置、形状計測方法、及び構造物の製造方法 |
DE102012005767A1 (de) * | 2012-03-25 | 2013-09-26 | DüRR DENTAL AG | Phasenkontrast-Röntgen-Tomographiegerät |
DE102013206252A1 (de) * | 2013-04-09 | 2014-10-09 | Helmholtz-Zentrum Dresden - Rossendorf E.V. | Anordnung zur schnellen Elektronenstrahl-Röntgencomputertomographie |
KR102139661B1 (ko) * | 2013-07-12 | 2020-07-30 | 삼성전자주식회사 | 회전 가능한 시준기를 구비한 ct 시스템 |
US20150036792A1 (en) * | 2013-08-01 | 2015-02-05 | Korea Advanced Institute Of Science And Technology | Computed tomography apparatus, and method of generating image by using computed tomography apparatus |
JP7451326B2 (ja) | 2020-06-29 | 2024-03-18 | キヤノンメディカルシステムズ株式会社 | X線診断装置 |
EP3933881A1 (en) | 2020-06-30 | 2022-01-05 | VEC Imaging GmbH & Co. KG | X-ray source with multiple grids |
Citations (9)
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JPS52107789A (en) * | 1976-03-05 | 1977-09-09 | Jeol Ltd | Unit for obtaining x-ray shift image |
JPS52109887A (en) * | 1976-03-11 | 1977-09-14 | Jeol Ltd | Unit for obtaining high speed x-ray tomograms |
JPS5357785A (en) * | 1976-11-02 | 1978-05-25 | Siemens Ag | Xxray diagnostic device |
JPS58115738A (ja) * | 1981-12-26 | 1983-07-09 | Toshiba Corp | 超高速ctスキヤナ用x線発生装置 |
JPS60157147A (ja) * | 1983-12-28 | 1985-08-17 | Toshiba Corp | 光制御x線スキヤナ |
JP2001321373A (ja) * | 2000-05-18 | 2001-11-20 | Katsuhiro Ono | カソードスキャン型x線発生器を用いたx線ctスキャナ |
WO2002065917A1 (en) * | 2001-02-23 | 2002-08-29 | Mitsubishi Heavy Industries, Ltd. | X-ray ct apparatus |
JP2003210453A (ja) * | 2002-01-28 | 2003-07-29 | Yokogawa Electric Corp | X線ct装置 |
JP2004081870A (ja) * | 2002-08-28 | 2004-03-18 | Ge Medical Systems Global Technology Co Llc | 統合ct−petシステム |
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DE4015105C3 (de) | 1990-05-11 | 1997-06-19 | Bruker Analytische Messtechnik | Röntgen-Computer-Tomographie-System |
DE4015180A1 (de) | 1990-05-11 | 1991-11-28 | Bruker Analytische Messtechnik | Roentgen-computer-tomographie-system mit geteiltem detektorring |
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US7366279B2 (en) * | 2004-07-29 | 2008-04-29 | General Electric Company | Scatter control system and method for computed tomography |
-
2004
- 2004-12-20 DE DE102004061347A patent/DE102004061347B3/de not_active Expired - Fee Related
-
2005
- 2005-12-01 CN CN200510127296.4A patent/CN1792330A/zh active Pending
- 2005-12-19 JP JP2005364491A patent/JP4510754B2/ja not_active Expired - Fee Related
- 2005-12-20 US US11/312,793 patent/US7340029B2/en not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS52107789A (en) * | 1976-03-05 | 1977-09-09 | Jeol Ltd | Unit for obtaining x-ray shift image |
JPS52109887A (en) * | 1976-03-11 | 1977-09-14 | Jeol Ltd | Unit for obtaining high speed x-ray tomograms |
JPS5357785A (en) * | 1976-11-02 | 1978-05-25 | Siemens Ag | Xxray diagnostic device |
JPS58115738A (ja) * | 1981-12-26 | 1983-07-09 | Toshiba Corp | 超高速ctスキヤナ用x線発生装置 |
JPS60157147A (ja) * | 1983-12-28 | 1985-08-17 | Toshiba Corp | 光制御x線スキヤナ |
JP2001321373A (ja) * | 2000-05-18 | 2001-11-20 | Katsuhiro Ono | カソードスキャン型x線発生器を用いたx線ctスキャナ |
WO2002065917A1 (en) * | 2001-02-23 | 2002-08-29 | Mitsubishi Heavy Industries, Ltd. | X-ray ct apparatus |
JP2003210453A (ja) * | 2002-01-28 | 2003-07-29 | Yokogawa Electric Corp | X線ct装置 |
JP2004081870A (ja) * | 2002-08-28 | 2004-03-18 | Ge Medical Systems Global Technology Co Llc | 統合ct−petシステム |
Also Published As
Publication number | Publication date |
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US20060159221A1 (en) | 2006-07-20 |
CN1792330A (zh) | 2006-06-28 |
JP2006175230A (ja) | 2006-07-06 |
US7340029B2 (en) | 2008-03-04 |
DE102004061347B3 (de) | 2006-09-28 |
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