JP5658149B2 - 吸収を利用して画像形成を行うためのシステム及び方法 - Google Patents
吸収を利用して画像形成を行うためのシステム及び方法 Download PDFInfo
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- JP5658149B2 JP5658149B2 JP2011520229A JP2011520229A JP5658149B2 JP 5658149 B2 JP5658149 B2 JP 5658149B2 JP 2011520229 A JP2011520229 A JP 2011520229A JP 2011520229 A JP2011520229 A JP 2011520229A JP 5658149 B2 JP5658149 B2 JP 5658149B2
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- G01N2021/6421—Measuring at two or more wavelengths
-
- 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6439—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" with indicators, stains, dyes, tags, labels, marks
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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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6491—Measuring fluorescence and transmission; Correcting inner filter effect
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- Investigating Or Analysing Materials By Optical Means (AREA)
Description
本願は、2008年7月24日に提出された米国仮出願第61/083,394号、2009年4月1日に提出された米国仮出願第61/165,708号について優先権を主張するものであり、これらの仮出願の各々は、参照によってそれの全体が本明細書に組み込まれるものとする。
は、該発光面の蛍光特性、並びに、励起照明のスペクトル及び強度に完全に依存する。励起強度の変動によって、該発光面における蛍光の強度が変化しうるが、
の比の変化は無視してよいだろう。したがって、上記の式[式1]及び[式2]から正規化された強度の比を得て、媒体の深さ、濃度、及び、吸収係数のみに依存する次の式を得ることができる。
である。
で与えられる。
ここで、I0=IB(0)は、センサー位置における励起強度であり、ελeは、励起波長λeにおける媒体の吸収係数である。
で与えられる。ここで、φは、媒体の量子効率、すなわち、吸収されるエネルギーに対する放出されるエネルギーの比であり、η1とη2は、2つの波長λ1とλ2における媒体の相対放射である。
の場合は、該第1の波長帯域は吸収されることになるが、該第2の波長帯域は吸収されない。励起照明強度がどの蛍光発光よりもはるかに大きい場合には、再吸収される波長帯域及び再吸収されない波長帯域の両方における強度の増加を無視することができる。したがって、λ1帯域の再吸収を含む微分蛍光強度方程式を次のように書くことができる。
は、それぞれ、波長λ1とλ2における該表面の反射率である。強度比は媒体を通る距離が長くなるにつれて指数関数的に減少するので、この関係を用いて、媒体の厚さ(または、媒体を通過する方向における該媒体の厚さ)を計算することができる。実際には、動作システムから較正された厚さ測定値を提供するために、実際の測定値を得て、該測定値を、任意の適切な技術を用いてこの関係に当てはめることができることが理解されよう。
Claims (14)
- 表面を有する膨張性の膜であって、ある波長範囲にわたって蛍光を発する蛍光物質を含む膨張性の膜と、
前記波長範囲内の第1の波長の光を前記波長範囲内の第2の波長の光よりも多く吸収する媒体の供給源であって、前記媒体を前記膨張性の膜に選択的に送り込んで、前記媒体で前記膨張性の膜が膨らんで内部測定体積を充填できるように、前記膨張性の膜に結合される供給源と、
前記膨張性の膜内に配置されて、前記蛍光物質の励起波長で前記膨張性の膜の表面を照明可能な光源と、
前記膨張性の膜内に配置されて、前記表面上のある位置が前記光源によって照明されたときに該位置のある方向における前記第1の波長の強度及び前記第2の波長の強度を測定するセンサーと、
前記第1の波長の強度と前記第2の波長の強度の比に基づいて、前記方向における前記媒体の厚さを決定するようにプログラムされ、かつ、複数の厚さ測定値に基づいて、前記表面の対象領域の3次元画像を構築するようにプログラムされたプロセッサ
を備えるシステム。
- 前記膨張性の膜が弾性膜である、請求項1のシステム。
- 前記媒体の減衰係数は、前記第2の波長に対するものよりも前記第1の波長に対するものの方が十分に大きい、請求項1のシステム。
- 前記媒体は、ガス、液体、ゲルのうちの1つ以上を含む、請求項1のシステム。
- 前記センサーは、前記膨張性の膜の外部にある電子撮像装置への光結合を有する、請求項1のシステム。
- 前記センサーは、前記プロセッサに電子的に結合された電子撮像装置を備える、請求項1のシステム。
- 前記センサーは、前記表面の画像を取り込むためのレンズを有するファイバースコープを備える、請求項1のシステム。
- 前記膨張性の膜が、人間の外耳道への挿入に適した形状及びサイズとされる、請求項1のシステム。
- 前記媒体の供給源が、制御された圧力で前記媒体を前記膨張性の膜に送りこむポンプを通じて、前記膨張性の膜に結合される、請求項1のシステム。
- 前記供給源から前記膨張性の膜の内部へと前記媒体を供給する流体ポートをさらに備える、請求項1のシステム。
- 前記光源は、広帯域の可視光光源を含む、請求項1のシステム。
- キャビティ内に膨張性の膜を配置するステップであって、該膨張性の膜は、表面とある波長範囲にわたって蛍光を発する蛍光物質とを含む、ステップと、
前記波長範囲内の第1の波長の光を前記波長範囲内の第2の波長の光よりも多く吸収する媒体で前記膨張性の膜を膨張させるステップと、
前記膨張性の膜内に配置された光源からの前記蛍光物質の励起波長で前記膨張性の膜の表面を照明するステップと、
前記表面上のある位置が照明されたときに、前記膨張性の膜内において、該位置のある方向における前記第1の波長の強度及び前記第2の波長の強度を測定するステップと、
前記第1の波長の強度と前記第2の波長の強度の比に基づいて、前記位置の前記方向における前記媒体の厚さを計算するステップと、
前記膨張性の膜の3次元画像を得るために、前記膨張性の膜の表面に向かう複数の方向における前記媒体の同様に計算された複数の厚さ測定値を組み合わせるステップ
を含む方法。 - 前記キャビティが人間の外耳道である、請求項12の方法。
- 前記光源用の電力源の少なくとも1つを挿入するための前記膨張性の膜の内部へのアクセスポート、前記光源用の光供給器、前記センサーに対する光結合部、及び、前記センサーに対する電気的結合部をさらに備える、請求項1のシステム。
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8339408P | 2008-07-24 | 2008-07-24 | |
| US61/083,394 | 2008-07-24 | ||
| US16570809P | 2009-04-01 | 2009-04-01 | |
| US61/165,708 | 2009-04-01 | ||
| PCT/US2009/051710 WO2010011938A1 (en) | 2008-07-24 | 2009-07-24 | Systems and methods for imaging using absorption |
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| JP2014222721A Division JP5946886B2 (ja) | 2008-07-24 | 2014-10-31 | 吸収を利用して画像形成を行うためのシステム及び方法 |
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| JP2011529189A JP2011529189A (ja) | 2011-12-01 |
| JP2011529189A5 JP2011529189A5 (ja) | 2012-08-02 |
| JP5658149B2 true JP5658149B2 (ja) | 2015-01-21 |
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| JP2014222721A Expired - Fee Related JP5946886B2 (ja) | 2008-07-24 | 2014-10-31 | 吸収を利用して画像形成を行うためのシステム及び方法 |
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