JP5426075B2 - X線ct装置 - Google Patents
X線ct装置 Download PDFInfo
- Publication number
- JP5426075B2 JP5426075B2 JP2007021940A JP2007021940A JP5426075B2 JP 5426075 B2 JP5426075 B2 JP 5426075B2 JP 2007021940 A JP2007021940 A JP 2007021940A JP 2007021940 A JP2007021940 A JP 2007021940A JP 5426075 B2 JP5426075 B2 JP 5426075B2
- Authority
- JP
- Japan
- Prior art keywords
- ray
- moving speed
- top plate
- reconstruction
- detector
- 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 - Fee Related
Links
- 238000001514 detection method Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000003491 array Methods 0.000 claims description 2
- 239000000470 constituent Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000013480 data collection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 125000002066 L-histidyl group Chemical group [H]N1C([H])=NC(C([H])([H])[C@](C(=O)[*])([H])N([H])[H])=C1[H] 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/54—Control of apparatus or devices for radiation diagnosis
- A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/027—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0487—Motor-assisted positioning
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4208—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
- A61B6/4233—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector using matrix detectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
- A61B6/5205—Devices using data or image processing specially adapted for radiation diagnosis involving processing of raw data to produce diagnostic data
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Pulmonology (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Description
Claims (5)
- コーンビーム状のX線束を発生するX線源と、
前記X線源から発生され被検体を透過したX線を検出するX線検出器であって、複数の検出素子を2次元状に配列して成るX線検出器と、
前記X線源と前記X線検出器とを前記被検体を挟んで対向した状態で装備する回転リングと、
前記被検体が載置される天板を有する寝台と、
ヘリカルスキャンを行うために、前記回転リングの回転と前記天板のスライドとを同期して制御する制御部と、
前記X線検出器からの出力信号に基づいて画像データを再構成する再構成部と、
複数の画質モードの各々について天板移動速度と検出素子列数との対応関係を記憶する記憶部と、
ヘリカルスキャンにおいて利用する所定の天板移動速度と所定の画質モードとから前記対応関係に基づいて、ヘリカルスキャンにおいて利用する前記X線検出器の検出素子列数を決定する決定部と、
を具備するX線CT装置。 - 前記記憶部は、前記対応関係を表すデータベースを少なくとも1つ以上有することを特徴とする請求項1に記載のX線CT装置。
- 前記決定部は、前記決定された検出素子列数に従って上部コリメーション条件を決定する、ことを特徴とする請求項1に記載のX線CT装置。
- 前記記憶部は、前記天板移動速度と前記上部コリメーション条件のデータベースを少なくとも1つ以上有することを特徴とする請求項3に記載のX線CT装置。
- 前記制御部は、前記決定された検出素子列数と前記所定の天板移動速度とでヘリカルスキャンを実行し、
前記再構成部は、前記所定の画質モードに従って完全解コーンビームヘリカル再構成処理を施す、
ことを特徴とする請求項1に記載のX線CT装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007021940A JP5426075B2 (ja) | 2007-01-31 | 2007-01-31 | X線ct装置 |
US12/020,638 US7561657B2 (en) | 2007-01-31 | 2008-01-28 | X-ray CT device |
EP08001638A EP1952766B1 (en) | 2007-01-31 | 2008-01-29 | X-ray CT device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007021940A JP5426075B2 (ja) | 2007-01-31 | 2007-01-31 | X線ct装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008183377A JP2008183377A (ja) | 2008-08-14 |
JP5426075B2 true JP5426075B2 (ja) | 2014-02-26 |
Family
ID=39356673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007021940A Expired - Fee Related JP5426075B2 (ja) | 2007-01-31 | 2007-01-31 | X線ct装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7561657B2 (ja) |
EP (1) | EP1952766B1 (ja) |
JP (1) | JP5426075B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5707067B2 (ja) * | 2010-08-10 | 2015-04-22 | 株式会社東芝 | X線ct装置の撮影条件処理方法及びx線ct装置 |
JP6165559B2 (ja) * | 2012-08-31 | 2017-07-19 | 東芝メディカルシステムズ株式会社 | X線ct装置 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3732568B2 (ja) * | 1996-04-03 | 2006-01-05 | 株式会社東芝 | X線コンピュータ断層撮影装置 |
US5889833A (en) * | 1997-06-17 | 1999-03-30 | Kabushiki Kaisha Toshiba | High speed computed tomography device and method |
JPH11206753A (ja) * | 1998-01-28 | 1999-08-03 | Hitachi Medical Corp | X線撮像装置 |
JP4406106B2 (ja) * | 1999-02-04 | 2010-01-27 | 株式会社東芝 | X線ct装置 |
US7085343B2 (en) * | 2001-10-18 | 2006-08-01 | Kabushiki Kaisha Toshiba | X-ray computed tomography apparatus |
JP2003135445A (ja) * | 2001-10-31 | 2003-05-13 | Toshiba Corp | X線ct装置、x線ct装置アライメント方法、及びx線ct装置アライメントサービス提供システム |
JP2003153893A (ja) | 2001-11-21 | 2003-05-27 | Hitachi Medical Corp | 断層写真像の作成装置 |
JP4467873B2 (ja) * | 2002-09-24 | 2010-05-26 | 株式会社日立メディコ | 断層撮影装置 |
ATE465471T1 (de) | 2003-02-14 | 2010-05-15 | Koninkl Philips Electronics Nv | System und verfahren für spiralförmige 3d- computertomographie mit exakter rekonstruktion |
JP2004313657A (ja) | 2003-04-21 | 2004-11-11 | Ge Medical Systems Global Technology Co Llc | 放射線計算断層画像装置 |
JP4439202B2 (ja) * | 2003-05-09 | 2010-03-24 | 株式会社東芝 | X線コンピュータ断層撮影装置及び画像ノイズシミュレーション装置 |
WO2005004063A2 (en) | 2003-07-04 | 2005-01-13 | Philips Intellectual Property & Standards Gmbh | Method using cone-beam computer tomography |
JP4434698B2 (ja) * | 2003-11-13 | 2010-03-17 | 株式会社東芝 | X線ct装置 |
US7424088B2 (en) | 2004-09-29 | 2008-09-09 | Kabushiki Kaisha Toshiba | Image reconstruction method using Hilbert transform |
US7113570B2 (en) | 2005-02-08 | 2006-09-26 | General Electric Company | Methods and systems for helical overscan reduction |
JP4713920B2 (ja) | 2005-04-15 | 2011-06-29 | 株式会社東芝 | X線コンピュータ断層撮影装置 |
JP2007236662A (ja) * | 2006-03-09 | 2007-09-20 | Ge Medical Systems Global Technology Co Llc | X線ct装置およびそのx線ct画像再構成方法、x線ct画像撮影方法。 |
-
2007
- 2007-01-31 JP JP2007021940A patent/JP5426075B2/ja not_active Expired - Fee Related
-
2008
- 2008-01-28 US US12/020,638 patent/US7561657B2/en active Active
- 2008-01-29 EP EP08001638A patent/EP1952766B1/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
US20080212735A1 (en) | 2008-09-04 |
JP2008183377A (ja) | 2008-08-14 |
US7561657B2 (en) | 2009-07-14 |
EP1952766A1 (en) | 2008-08-06 |
EP1952766B1 (en) | 2012-11-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4639143B2 (ja) | X線ct装置およびその制御方法 | |
JP6233980B2 (ja) | X線ct装置及び画像再構成方法 | |
US20030031290A1 (en) | X-ray computed tomographic imaging apparatus | |
US20040131140A1 (en) | Method for computed tomography of a periodically moving object to be examined, and a CT unit for carrying out this method | |
US7672423B2 (en) | Short scan cardiac CT on a quasi axial trajectory | |
KR20060135569A (ko) | X선 ct 촬영 방법 및 x선 ct 장치 | |
US6928137B2 (en) | Method for generating an image by means of a tomography capable X-ray device with multi-row X-ray detector array | |
US6925141B2 (en) | Method for imaging in the computer tomography of a periodically moved object to be examined and CT device for carrying out the method | |
JP2007000408A (ja) | X線ct装置 | |
JP4175875B2 (ja) | 信号獲得装置およびx線ct装置 | |
JP2008012206A (ja) | X線断層撮影装置 | |
JP4469555B2 (ja) | X線コンピュータ断層撮影装置 | |
US8908953B2 (en) | Imaging system and imaging method for imaging a region of interest | |
JP5196782B2 (ja) | X線ct装置およびその制御方法 | |
JP4300126B2 (ja) | X線ct装置および撮像方法 | |
JP5426075B2 (ja) | X線ct装置 | |
JP2009279301A (ja) | コーンビームx線ct装置 | |
JP4155550B2 (ja) | X線ct装置 | |
JP4464161B2 (ja) | 放射線画像撮影制御装置及びその制御方法及びプログラム | |
US20060243914A1 (en) | Attenuation map generation from pet scans | |
JP4695670B2 (ja) | X線ct装置 | |
JP2007136240A (ja) | 放射線計算断層画像装置 | |
JP2003305034A (ja) | 多列検出器型断層撮影装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20100128 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20120119 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120124 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120326 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20120529 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20130226 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130415 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20131105 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20131128 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 5426075 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
LAPS | Cancellation because of no payment of annual fees |