JP2012523945A - 波長掃引光源型光干渉断層(oct)方法及びシステム - Google Patents
波長掃引光源型光干渉断層(oct)方法及びシステム Download PDFInfo
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- G—PHYSICS
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
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- G01B9/02091—Tomographic interferometers, e.g. based on optical coherence
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0062—Arrangements for scanning
- A61B5/0066—Optical coherence imaging
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0073—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by tomography, i.e. reconstruction of 3D images from 2D projections
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/004—Means or methods for taking digitized impressions
- A61C9/0046—Data acquisition means or methods
- A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4795—Scattering, i.e. diffuse reflection spatially resolved investigating of object in scattering medium
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/178—Methods for obtaining spatial resolution of the property being measured
- G01N2021/1785—Three dimensional
- G01N2021/1787—Tomographic, i.e. computerised reconstruction from projective measurements
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Abstract
Description
Claims (9)
- 光源を用いた光干渉断層法(OCT)走査の方法であって、
画像化範囲に対して、前記光源の波長を掃引しながら、少なくとも第一及び第二の横方向走査を実行するステップと、
範囲に対する前記第一及び第二の横方向走査の各々の間に生成されたデータを収集するステップと、
収集された前記データから表現を生成するステップを含む方法。 - 請求項1記載の方法において、
第一の横方向走査の間の光源の波長は、実質的に定数である第一の値を有し、
第二の横方向走査の間の光源の波長は、実質的に定数である第二の値を有し、
前記第一の値と、前記第二の値とは異なることを特徴とする方法。 - 請求項1記載の方法において、
各横方向走査は、共鳴走査鏡又は多角形走査鏡を用いて行うことを特徴とする方法。 - 請求項1記載の方法において、
前記画像化範囲は、口腔内に位置する構造であることを特徴とする方法。 - 光源と、光カプラと、参照アームと、試料アームと、検出器とを含む波長掃引光源型光干渉断層法(OCT)システムであって、
画像化範囲に対して、前記光源の2つ又はそれ以上の数の個々の波長を用いて、2つあるいはそれ以上の数の横方向走査を生成する、前記試料アームに関連づけられた走査機構と、
該走査機構により生成されたデータを収集する機構を含むことを特徴とするシステム。 - 請求項5記載のシステムにおいて、前記光源は、低速で掃引する光源であることを特徴とするシステム。
- 光源と、試料アームに走査機構を有する光コヒーレンス領域反射計測法(OCDR)システムにおいて、
画像化範囲に対して、前記光源の波長を掃引しながら、複数の横方向走査を実行するステップと、
範囲に対する前記複数の横方向走査からデータを収集し、表現を生成するステップを含む方法。 - 光源と、光カプラと、参照アームと、試料アームと、検出器とを含むOCT干渉計と、
画像化範囲に対して、前記光源の2つ又はそれ以上の数の個々の波長を用いて、2つあるいはそれ以上の数の横方向走査を生成する、前記試料アームに関連づけられた走査機構とを含み、ユーザの手中に収まるように構成されたプローブ。 - 請求項8記載のプローブであって、
a.一つあるいはそれ以上の数の三角走査を用いて、範囲内の対象を走査し、固定座標系での格子を生成するステップと、
b.さらに、格子と重なり合うN個の位置で、対象を走査するステップであって、各走査位置において、三角測定モードとOCTモードで対象を走査することを特徴とするステップと、
c.ステップ(a)で得られた格子に、ステップ(b)の三角測定モードの走査を登録する変換行列を計算で求めるステップと、
d.OCTモードでの走査で収集したデータに対して、変換行列を適用し、変換されたOCTデータを生成するステップと、
e.前記変換されたOCTデータを、ステップ(a)で記載したものと同じ固定座標系の格子と合成するステップ
を含む走査方法を実行するように、走査機構が動作可能であることを特徴とするプローブ。
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17088609P | 2009-04-20 | 2009-04-20 | |
US61/170,886 | 2009-04-20 | ||
US17251309P | 2009-04-24 | 2009-04-24 | |
US61/172,513 | 2009-04-24 | ||
US17371409P | 2009-04-29 | 2009-04-29 | |
US61/173,714 | 2009-04-29 | ||
US12/762,511 US8345257B2 (en) | 2009-04-20 | 2010-04-19 | Swept source optical coherence tomography (OCT) method and system |
US12/762,511 | 2010-04-19 | ||
PCT/US2010/031742 WO2010123892A2 (en) | 2009-04-20 | 2010-04-20 | Swept source optical coherence tomography (oct) method and system |
Publications (2)
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JP2012523945A true JP2012523945A (ja) | 2012-10-11 |
JP5702364B2 JP5702364B2 (ja) | 2015-04-15 |
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JP2012507311A Expired - Fee Related JP5702364B2 (ja) | 2009-04-20 | 2010-04-20 | 波長掃引光源型光干渉断層(oct)方法及びシステム |
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US (2) | US8345257B2 (ja) |
JP (1) | JP5702364B2 (ja) |
WO (1) | WO2010123892A2 (ja) |
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JP2021165747A (ja) * | 2017-12-25 | 2021-10-14 | 日本電気株式会社 | 光ビーム制御器およびこれを用いた光干渉断層撮像器 |
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WO2010123892A3 (en) | 2011-03-24 |
US8345257B2 (en) | 2013-01-01 |
US20130182260A1 (en) | 2013-07-18 |
JP5702364B2 (ja) | 2015-04-15 |
US20100296098A1 (en) | 2010-11-25 |
WO2010123892A2 (en) | 2010-10-28 |
US8928888B2 (en) | 2015-01-06 |
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