JP5955846B2 - 微分位相差イメージングにおける正規化位相回復 - Google Patents
微分位相差イメージングにおける正規化位相回復 Download PDFInfo
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- JP5955846B2 JP5955846B2 JP2013526586A JP2013526586A JP5955846B2 JP 5955846 B2 JP5955846 B2 JP 5955846B2 JP 2013526586 A JP2013526586 A JP 2013526586A JP 2013526586 A JP2013526586 A JP 2013526586A JP 5955846 B2 JP5955846 B2 JP 5955846B2
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- 238000003384 imaging method Methods 0.000 title claims description 31
- 238000011084 recovery Methods 0.000 title claims description 17
- 238000000034 method Methods 0.000 claims description 26
- 230000010354 integration Effects 0.000 claims description 14
- 230000004069 differentiation Effects 0.000 claims description 2
- 238000004590 computer program Methods 0.000 claims 1
- 230000005855 radiation Effects 0.000 description 12
- 239000011159 matrix material Substances 0.000 description 9
- 238000010606 normalization Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 6
- 239000013598 vector Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000001427 coherent effect Effects 0.000 description 5
- 238000004422 calculation algorithm Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000007476 Maximum Likelihood Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
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- 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
-
- 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
- A61B6/48—Diagnostic techniques
- A61B6/484—Diagnostic techniques involving phase contrast X-ray imaging
-
- 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
- G06T11/005—Specific pre-processing for tomographic reconstruction, e.g. calibration, source positioning, rebinning, scatter correction, retrospective gating
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2211/00—Image generation
- G06T2211/40—Computed tomography
- G06T2211/448—Computed tomography involving metal artefacts, streaking artefacts, beam hardening or photon starvation
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- Engineering & Computer Science (AREA)
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- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
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- Animal Behavior & Ethology (AREA)
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- Optics & Photonics (AREA)
- High Energy & Nuclear Physics (AREA)
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- Algebra (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Description
に従ってgを推定することによって、単一外れ値が行全体にわたる合計によって広められ、従ってこの外れ値は多数の検出器ピクセルに対しzにおける勾配に寄与する。
102 X線発生装置/X線源
104 X線検出器
106 ガントリ
108 対象
110 支持台
112 処理システム
114 X線放射
200 微分位相差イメージングシステム
202 線源格子
204 位相格子G1
206 分析器格子G2
208 アクチュエータ素子
210a,b 波面
300 マイクロプロセッサ
302 記憶素子
304 表示素子
400 正規化位相回復と位相差イメージングのための方法
402 微分位相差画像データを受信
404 再構成画像データを生成
406 再構成画像データを提示
500 ストリーク状アーチファクト
Claims (11)
- 位相差イメージングにおける正規化位相回復のための方法であって、
対象の微分位相差画像データ(di,j)を受信するステップと、
前記対象の再構成画像データ(gi,j)を生成するステップと、
前記対象の再構成画像データ(gi,j)を提示するステップとを有し、
前記微分位相差画像データと前記再構成画像データが第1の次元(i)と第2の次元(j)を持つ二次元データ構造を有し、
前記再構成画像データを生成するステップが前記データ構造の前記第2の次元(j)における微分位相差画像データの積分を有し、
前記積分は、前記データ構造の第2の次元(j)における前記対象の再構成される画像データの微分に関連する逆問題を解くことにより実施され、前記積分の実施は、最小化問題を解くことを含み、
前記データ構造の前記第1の次元(i)において勾配演算子が決定され、
前記勾配演算子が画像データを再構成するために利用される、
方法。 - ψが二次ペナルティ、Huberペナルティ、及び一般化ガウスマルコフ確率場のポテンシャル関数である、請求項5に記載の方法。
- 位相差イメージングにおける正規化位相回復のための装置であって、
対象の微分位相差画像データ(di,j)を受信して記憶するための記憶素子と、
前記対象の再構成画像データ(gi,j)を生成するための処理素子とを有し、
前記処理素子が請求項1乃至6のいずれか一項に記載の方法の各ステップを実行する、装置。 - 請求項7に記載の装置を有するX線システム。
- X線システム又はCTシステムとしての請求項7に記載の装置の使用。
- プロセッサによって実行されるときに、請求項1乃至6のいずれか一項に記載の方法を実行するように構成される、位相差イメージングにおける正規化位相回復のためのコンピュータプログラムが記憶される、コンピュータ可読媒体。
- プロセッサによって実行されるときに、請求項1乃至6のいずれか一項に記載の方法を実行するように構成される、位相差イメージングにおける正規化位相回復のためのプログラム要素。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10175174 | 2010-09-03 | ||
EP10175174.1 | 2010-09-03 | ||
PCT/IB2011/053838 WO2012029048A1 (en) | 2010-09-03 | 2011-09-01 | Regularized phase retrieval in differential phase-contrast imaging |
Publications (2)
Publication Number | Publication Date |
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JP2013536723A JP2013536723A (ja) | 2013-09-26 |
JP5955846B2 true JP5955846B2 (ja) | 2016-07-20 |
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JP2013526586A Expired - Fee Related JP5955846B2 (ja) | 2010-09-03 | 2011-09-01 | 微分位相差イメージングにおける正規化位相回復 |
Country Status (7)
Country | Link |
---|---|
US (1) | US9412184B2 (ja) |
EP (1) | EP2612299B1 (ja) |
JP (1) | JP5955846B2 (ja) |
CN (1) | CN103098095B (ja) |
BR (1) | BR112013004824A2 (ja) |
RU (1) | RU2013114839A (ja) |
WO (1) | WO2012029048A1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9907524B2 (en) | 2012-12-21 | 2018-03-06 | Carestream Health, Inc. | Material decomposition technique using x-ray phase contrast imaging system |
US10578563B2 (en) | 2012-12-21 | 2020-03-03 | Carestream Health, Inc. | Phase contrast imaging computed tomography scanner |
US9700267B2 (en) | 2012-12-21 | 2017-07-11 | Carestream Health, Inc. | Method and apparatus for fabrication and tuning of grating-based differential phase contrast imaging system |
US9357975B2 (en) * | 2013-12-30 | 2016-06-07 | Carestream Health, Inc. | Large FOV phase contrast imaging based on detuned configuration including acquisition and reconstruction techniques |
US10096098B2 (en) | 2013-12-30 | 2018-10-09 | Carestream Health, Inc. | Phase retrieval from differential phase contrast imaging |
US9724063B2 (en) | 2012-12-21 | 2017-08-08 | Carestream Health, Inc. | Surrogate phantom for differential phase contrast imaging |
US9494534B2 (en) | 2012-12-21 | 2016-11-15 | Carestream Health, Inc. | Material differentiation with phase contrast imaging |
JP6237001B2 (ja) * | 2013-08-29 | 2017-11-29 | コニカミノルタ株式会社 | 医用画像処理装置及び位相画像生成方法 |
CN103559686B (zh) * | 2013-10-16 | 2016-07-06 | 中国科学院深圳先进技术研究院 | 一种基于多面图像信息的同轴相衬成像相位恢复方法及系统 |
EP3123446B1 (en) * | 2014-03-26 | 2020-07-08 | Koninklijke Philips N.V. | Image generation apparatus |
CN107567640B (zh) * | 2015-05-07 | 2022-04-05 | 皇家飞利浦有限公司 | 用于扫描暗场和相位对比成像的射束硬化校正 |
JP6418066B2 (ja) | 2015-05-21 | 2018-11-07 | コニカミノルタ株式会社 | 位相画像処理方法、位相画像処理装置、画像処理装置及び画像処理プログラム |
EP3498171A1 (en) * | 2017-12-15 | 2019-06-19 | Koninklijke Philips N.V. | Single shot x-ray phase-contrast and dark field imaging |
CN109377533B (zh) * | 2018-09-21 | 2023-01-24 | 上海交通大学 | X射线光栅相衬成像重建方法及其系统 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1884193A4 (en) * | 2005-05-23 | 2010-01-27 | Konica Minolta Med & Graphic | METHOD FOR DISPLAYING ABNORMAL SHADOW CANDIDATE, AND MEDICAL IMAGE PROCESSING SYSTEM |
JP5223266B2 (ja) * | 2006-08-22 | 2013-06-26 | コニカミノルタエムジー株式会社 | X線画像システム |
JP5683808B2 (ja) | 2007-02-21 | 2015-03-11 | コニカミノルタ株式会社 | X線画像システム |
WO2009058976A1 (en) * | 2007-10-30 | 2009-05-07 | Massachusetts Institute Of Technology | Phase-contrast x-ray imaging |
CN101978257B (zh) * | 2008-03-19 | 2014-12-17 | 皇家飞利浦电子股份有限公司 | 用于相位衬度成像的旋转x射线装置 |
DE112009002606B4 (de) * | 2008-10-29 | 2024-02-01 | Canon Kabushiki Kaisha | Röntgenstrahlabbildungsgerät und Röntgenstrahlabbildungsverfahren |
DE102009004702B4 (de) * | 2009-01-15 | 2019-01-31 | Paul Scherer Institut | Anordnung und Verfahren zur projektiven und/oder tomographischen Phasenkontrastbildgebung mit Röntgenstrahlung |
CN102802529B (zh) * | 2009-06-16 | 2015-09-16 | 皇家飞利浦电子股份有限公司 | 用于微分相衬成像的校正方法 |
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2011
- 2011-09-01 JP JP2013526586A patent/JP5955846B2/ja not_active Expired - Fee Related
- 2011-09-01 WO PCT/IB2011/053838 patent/WO2012029048A1/en active Application Filing
- 2011-09-01 CN CN201180041652.4A patent/CN103098095B/zh not_active Expired - Fee Related
- 2011-09-01 EP EP11764000.3A patent/EP2612299B1/en not_active Not-in-force
- 2011-09-01 BR BR112013004824A patent/BR112013004824A2/pt not_active IP Right Cessation
- 2011-09-01 RU RU2013114839/08A patent/RU2013114839A/ru not_active Application Discontinuation
- 2011-09-01 US US13/820,179 patent/US9412184B2/en active Active
Also Published As
Publication number | Publication date |
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US9412184B2 (en) | 2016-08-09 |
CN103098095A (zh) | 2013-05-08 |
US20130156284A1 (en) | 2013-06-20 |
EP2612299A1 (en) | 2013-07-10 |
EP2612299B1 (en) | 2015-11-18 |
RU2013114839A (ru) | 2014-10-10 |
BR112013004824A2 (pt) | 2016-05-31 |
CN103098095B (zh) | 2016-11-16 |
WO2012029048A1 (en) | 2012-03-08 |
JP2013536723A (ja) | 2013-09-26 |
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