JP5099750B2 - 断層撮影装置の画像再構成方法、故障診断方法、断層撮影装置、及び、システムマトリクスの管理プログラム - Google Patents
断層撮影装置の画像再構成方法、故障診断方法、断層撮影装置、及び、システムマトリクスの管理プログラム Download PDFInfo
- Publication number
- JP5099750B2 JP5099750B2 JP2007087480A JP2007087480A JP5099750B2 JP 5099750 B2 JP5099750 B2 JP 5099750B2 JP 2007087480 A JP2007087480 A JP 2007087480A JP 2007087480 A JP2007087480 A JP 2007087480A JP 5099750 B2 JP5099750 B2 JP 5099750B2
- Authority
- JP
- Japan
- Prior art keywords
- error
- image reconstruction
- data
- system matrix
- image
- 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
- 238000000034 method Methods 0.000 title claims description 38
- 239000011159 matrix material Substances 0.000 title claims description 18
- 238000003745 diagnosis Methods 0.000 title description 2
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 238000012545 processing Methods 0.000 claims description 19
- 238000003325 tomography Methods 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 13
- 238000007689 inspection Methods 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 4
- 230000008439 repair process Effects 0.000 claims description 3
- 230000007257 malfunction Effects 0.000 claims description 2
- 238000002600 positron emission tomography Methods 0.000 description 16
- 230000005855 radiation Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000002603 single-photon emission computed tomography Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005094 computer simulation Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000009206 nuclear medicine Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
- G01T1/164—Scintigraphy
- G01T1/1641—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras
- G01T1/1648—Ancillary equipment for scintillation cameras, e.g. reference markers, devices for removing motion artifacts, calibration devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/003—Reconstruction from projections, e.g. tomography
- G06T11/006—Inverse problem, transformation from projection-space into object-space, e.g. transform methods, back-projection, algebraic methods
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
- H04N25/68—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to defects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/32—Transforming X-rays
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2211/00—Image generation
- G06T2211/40—Computed tomography
- G06T2211/424—Iterative
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Biomedical Technology (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Mathematical Optimization (AREA)
- Mathematical Analysis (AREA)
- Algebra (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pure & Applied Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Nuclear Medicine (AREA)
- Measurement Of Radiation (AREA)
Description
12…(放射線)検出器
14…システムモデル
14´…修正システムモデル
15…エラーテーブル
16…被検体
20…ブロック検出器
21〜24…シンチレータアレイ
26…受光素子
Claims (7)
- 断層撮影装置において、一つ又は複数の検出素子に対する計測データにエラーが含まれる場合、画像再構成演算において計算もしくは参照するシステムマトリクスを前記エラーに合わせて修正することによって、画像に生じるアーティファクトを低減することを特徴とする断層撮影装置の画像再構成方法。
- エラーを含む検出素子の位置情報およびエラーの程度の情報を記憶装置に格納し、画像再構成ソフトウェアの内部において参照することによって、前記システムマトリクスをエラーに合わせて修正することを特徴とする請求項1に記載の断層撮影装置の画像再構成方法。
- エラーが発生した検出素子に対する計測データを、画像再構成演算を行う前に除去することを特徴とする請求項1に記載の断層撮影装置の画像再構成方法。
- 検出器部、同時計数判定部、データ変換処理部またはデータ加算処理部において、エラーが発生した検出素子に対する計測データを出力させずに除去することを特徴とする、請求項3に記載の断層撮影装置の画像再構成方法。
- 断層撮影装置において、装置のいずれかの箇所において故障や不調が生じた場合、シミュレーションデータあるいは別の計測データに対して請求項1乃至3のいずれかに記載の方法を適用して画像再構成を行い、画質を確認することによって、エラーが画像再構成に与える影響をシミュレーションし、装置の修理が必要か、検査の続行が可能かどうかを判定することを特徴とする断層撮影装置の故障診断方法。
- 断層撮影装置において、一つ又は複数の検出素子に対する計測データにエラーが含まれる場合、画像再構成演算において計算もしくは参照するシステムマトリクスを前記エラーに合わせて修正するためのエラーを含む検出素子の位置情報およびエラーの程度の情報を記憶装置に格納したことを特徴とする断層撮影装置。
- 画像再構成演算において計算もしくは参照するシステムマトリクスの管理プログラムであって、
コンピュータに、
断層撮影装置において、一つまたは複数の検出素子に対する計測データにエラーが含まれるか否かを判定する手順と、
エラーが含まれる場合、エラーを含む検出素子の位置情報およびエラーの程度の情報を格納した記憶装置を参照して、エラーに合わせてシステムマトリクスを修正し画像に生じるアーティファクトを低減する手順と、
を実行させるためのシステムマトリクスの管理プログラム。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007087480A JP5099750B2 (ja) | 2007-03-29 | 2007-03-29 | 断層撮影装置の画像再構成方法、故障診断方法、断層撮影装置、及び、システムマトリクスの管理プログラム |
US12/450,349 US20100046818A1 (en) | 2007-03-29 | 2007-03-30 | Image reconstruction method for tomography scanner, failure diagnosis method, tomography scanner and management program for system matrix |
PCT/JP2007/057229 WO2008120396A1 (ja) | 2007-03-29 | 2007-03-30 | 断層撮影装置の画像再構成方法、故障診断方法、断層撮影装置、及び、システムマトリクスの管理プログラム |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007087480A JP5099750B2 (ja) | 2007-03-29 | 2007-03-29 | 断層撮影装置の画像再構成方法、故障診断方法、断層撮影装置、及び、システムマトリクスの管理プログラム |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008245695A JP2008245695A (ja) | 2008-10-16 |
JP5099750B2 true JP5099750B2 (ja) | 2012-12-19 |
Family
ID=39807987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007087480A Expired - Fee Related JP5099750B2 (ja) | 2007-03-29 | 2007-03-29 | 断層撮影装置の画像再構成方法、故障診断方法、断層撮影装置、及び、システムマトリクスの管理プログラム |
Country Status (3)
Country | Link |
---|---|
US (1) | US20100046818A1 (ja) |
JP (1) | JP5099750B2 (ja) |
WO (1) | WO2008120396A1 (ja) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5419403B2 (ja) * | 2008-09-04 | 2014-02-19 | キヤノン株式会社 | 画像処理装置 |
JP5185881B2 (ja) * | 2009-04-27 | 2013-04-17 | 株式会社日立製作所 | 画像再構成方法、x線ct装置、及びプログラム |
JP5413019B2 (ja) * | 2009-07-27 | 2014-02-12 | 大日本印刷株式会社 | 放射線画像処理装置、放射線画像処理方法及び放射線画像処理プログラム |
JP2011252860A (ja) * | 2010-06-03 | 2011-12-15 | Toshiba Corp | 放射線イメージング装置、方法及びプログラム |
CN101856236B (zh) * | 2010-06-13 | 2012-07-04 | 苏州瑞派宁科技有限公司 | 一种应用适应性的正电子发射断层成像方法及装置 |
US9508142B2 (en) | 2012-08-22 | 2016-11-29 | Hitachi Medical Corporation | X-ray CT apparatus and X-ray CT image-generating method |
US9364192B2 (en) * | 2013-03-15 | 2016-06-14 | Siemens Medical Solutions Usa, Inc. | Error estimates in quantitative functional imaging |
KR101539234B1 (ko) | 2013-07-26 | 2015-07-24 | 삼성전자주식회사 | 의료 진단 장치의 오류 이벤트 처리 방법, 장치 및 의료 정보 제공 방법, 장치 |
US10304218B2 (en) | 2014-07-04 | 2019-05-28 | Shimadzu Corporation | Image reconstruction processing method |
WO2016137226A1 (en) * | 2015-02-24 | 2016-09-01 | Samsung Electronics Co., Ltd. | Medical image processing apparatus and medical image processing method |
KR20160103518A (ko) * | 2015-02-24 | 2016-09-01 | 삼성전자주식회사 | 의료 영상 처리 장치 및 의료 영상 처리 방법 |
KR101667145B1 (ko) * | 2015-04-20 | 2016-10-17 | 고려대학교 산학협력단 | 감마 카메라의 흔들림 보정 방법 |
KR102412122B1 (ko) * | 2015-05-27 | 2022-06-23 | 삼성전자주식회사 | 의료 영상 디스플레이 방법 및 장치 |
CA3134278C (en) * | 2018-03-07 | 2023-08-29 | Siemens Medical Solutions Usa, Inc | Calibration bias reduction in a pressurized gas ion chanber-based dose calibrator |
WO2020101971A1 (en) * | 2018-11-13 | 2020-05-22 | Seddi, Inc. | Procedural model of fiber and yarn deformation |
US11172906B2 (en) * | 2019-01-18 | 2021-11-16 | Parto Negar Persia (PNP) Company | Normalization of a positron emission tomography scanner |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3363735B2 (ja) * | 1996-06-26 | 2003-01-08 | 松下電器産業株式会社 | X線画像装置 |
JP2003290216A (ja) * | 2002-03-27 | 2003-10-14 | Ge Medical Systems Global Technology Co Llc | X線ct装置、システムおよび投影データ圧縮復元方法 |
US7440602B2 (en) * | 2004-11-17 | 2008-10-21 | General Electric Company | Methods, apparatus, and software to compensate for failed or degraded components |
-
2007
- 2007-03-29 JP JP2007087480A patent/JP5099750B2/ja not_active Expired - Fee Related
- 2007-03-30 US US12/450,349 patent/US20100046818A1/en not_active Abandoned
- 2007-03-30 WO PCT/JP2007/057229 patent/WO2008120396A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
JP2008245695A (ja) | 2008-10-16 |
WO2008120396A1 (ja) | 2008-10-09 |
US20100046818A1 (en) | 2010-02-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5099750B2 (ja) | 断層撮影装置の画像再構成方法、故障診断方法、断層撮影装置、及び、システムマトリクスの管理プログラム | |
EP1934942B1 (en) | Iterative reconstruction with enhanced noise control filtering | |
US10754048B2 (en) | Correcting count loss in pet system | |
US8530846B2 (en) | Apparatus and methods for detector scatter recovery for nuclear medicine imaging systems | |
RU2427037C2 (ru) | Способ и система для реконструкции рет-изображения с использованием суррогатного изображения | |
US20180114345A1 (en) | Correcting count loss | |
CN1875886A (zh) | 医用图像显示装置和医用图像显示系统 | |
US8450693B2 (en) | Method and system for fault-tolerant reconstruction of images | |
US20110142367A1 (en) | Methods and systems for correcting image scatter | |
US10222490B2 (en) | PET scanner with emission and transmission structures in a checkerboard configuration | |
US10089757B2 (en) | Image processing apparatus, image processing method, and non-transitory computer readable storage medium | |
CN102487607B (zh) | 核医学成像装置及控制方法 | |
US20230386036A1 (en) | Methods and systems for medical imaging | |
US9947116B2 (en) | Methods and systems for detector gap corrections | |
JP6143533B2 (ja) | 核医学画像再構成装置、核医学画像再構成方法、及びプログラム | |
JP6052425B2 (ja) | 輪郭画像生成装置および核医学診断装置 | |
JP4400460B2 (ja) | 核医学イメージング装置 | |
JP4317124B2 (ja) | 画像処理システムおよび画像処理方法 | |
US10733770B2 (en) | System and method for performing fault-tolerant reconstruction of an image | |
KR101958098B1 (ko) | 비스듬히 배치한 섬광결정을 이용한 양전자 방출 단층 촬영기의 영상재구성 방법 | |
CN112102426B (zh) | 本底符合事件判选方法、装置、设备及可读存储介质 | |
JP5397001B2 (ja) | 核医学用データ収集方法および核医学診断装置 | |
EP4318400A1 (en) | Image processing apparatus, image processing method and program | |
JP2024025712A (ja) | 散乱フラクションの決定方法、放射線診断装置及び放射線診断システム | |
US20210012546A1 (en) | Automatic fault detection in hybrid imaging |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20100204 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120131 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120330 |
|
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: 20120904 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20120920 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20151005 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 5099750 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
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 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |