JP5089168B2 - 拡張ダイナミックレンジ撮像内視鏡システムに関する装置と方法 - Google Patents
拡張ダイナミックレンジ撮像内視鏡システムに関する装置と方法 Download PDFInfo
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Description
(関連出願への相互参照)
(定義)
Claims (50)
- 良好なダイナミックレンジを有する光学撮像システムであって、
a)可変選択スペクトルおよび可変選択波長依存強度分布を含む照明光を放射するように構成され、所望のように前記可変選択スペクトルおよび前記可変選択波長依存強度分布を独立して増加または減少するように構成された調整可能光源と、
b)目標物から放射する光を検出し、前記目標物の画像をプロセッサに送信するように構成された画像センサと、
c)前記光源、前記画像センサ、および前記プロセッサに操作可能なように接続されたコントローラであって、前記コントローラは、コンピュータ実行型プログラミングを含み、前記コンピュータ実行型プログラミングは、前記照明光の前記選択スペクトルおよび波長依存強度分布を変化させて、前記画像の波長分布を実質的に変更することなく、前記画像における特別な波長分布において過飽和、露光過度、または露光不足の少なくとも一つを補償するように構成された補償照明光を提供するように、前記光源、画像センサ、およびプロセッサを調整するように構成され、また前記コンピュータ実行型プログラミングは、前記光源の変化についてのデータと前記画像におけるデータを組み合わせて、前記システムに対して強調ダイナミックレンジを提供するように構成された前記コントローラとを含み、
前記調整可能光源は、
a)光源と、
b)前記光源から光路に沿って進む光ビームからスペクトルを提供できるスペクトル形成器と、前記スペクトル形成器の下流に位置し、前記スペクトル形成器に光学的に接続された画素化空間光変調器(SLM)であって、前記画像の波長分布を実質的に変更することなく、信号の前記特別な波長分布において過飽和または露光不足を補償する前記補償照明光の前記選択スペクトルおよび波長依存強度分布のみを実質的に通過させるように構成され、前記画素化SLMにおける画素のオン/オフパターンを制御して、実質的に照明光の所望の波長分布のみを通過させるようにするコンピュータ実行型プログラミングを含むコントローラに操作可能なように接続された前記画素化SLMとを備えた調整可能フィルタとを含み、
前記画素化SLMは、反射型画素化SLMであり、
前記反射型画素化SLMの反射面は、光阻止バリアをはさんで実質的に隣同士に並べて配置された第1および第2画素化SLM領域を提供するように構成され、前記システムは更に、前記第1画素化SLM領域からの光を前記第2画素化SLM領域に送信するように位置するように構成された少なくとも一つの光学素子を含む、光学撮像システム。 - 前記システムは、基端部および先端部を含み、前記先端部を目標に近接して配置し、前記先端部から照明光を放射するように構成されている内視鏡の本体を更に備える、請求項1に記載の光学撮像システム。
- 前記調整可能光源は、事実上すべての望ましくない光を除去するように直列に構成された少なくとも二つの調整可能フィルタを含む、請求項2に記載の光学撮像システム。
- 前記画像センサは、前記先端部に配置される、請求項2又は3に記載の光学撮像システム。
- 前記画像センサは、前記基端部に配置される、請求項2又は3に記載の光学撮像システム。
- 前記画像センサは、モノクロ画像センサである、請求項1〜5のいずれか一項に記載の光学撮像システム。
- 前記画像センサは、カラー画像センサである、請求項1〜5のいずれか一項に記載の光学撮像システム。
- 前記システムは更に、前記光源が、それぞれが選択された、実質的に純粋な、可変分布および強度を有する照明光の複数の異なる所望の波長帯域を時間の経過と共に提供し、前記モノクロ画像センサが前記目標物から放射する光の強度を検出して前記所望の波長分布のそれぞれに対して検出光強度を提供し、前記プロセッサが前記帯域のそれぞれに対する前記検出光強度を、表示装置上の表示のための適切な選択されたカラーに関連付けるように、前記光源、画像センサ、およびプロセッサを調整するように構成されたコンピュータ実行型プログラミングを含む、請求項6に記載の光学撮像システム。
- 前記システムは、前記補償照明光が、前記照明光と比較して実質的に単一の波長帯域においてのみ減衰されるように構成されている、請求項1〜8のいずれか一項に記載の光学撮像システム。
- 前記単一の波長帯域は、赤、緑、青、シアン、イエロー、またはマゼンタの一つである、請求項9に記載の光学撮像システム。
- 前記システムは、前記補償照明光が、前記照明光と比較して複数の波長帯域において減衰されるように構成されている、請求項1〜8のいずれか一項に記載の光学撮像システム。
- 前記照明光は、蛍光励起照明光の少なくとも一つの帯域を備え、前記システムは更に、前記画像センサに反射して戻す前記蛍光励起照明帯域のすべてを実質的に阻止するように構成された少なくとも一つのロングパスフィルタを含む、請求項1〜11のいずれか一項に記載の光学撮像システム。
- 前記画像センサは、電荷結合素子(CCD)、相補型金属酸化膜半導体(CMOS)、電荷注入素子(CID)、およびフォトダイオードアレイの少なくとも一つを含む、請求項1〜12のいずれか一項に記載の光学撮像システム。
- 前記光学撮像システムは、外科医用顕微鏡または検耳鏡である、請求項1〜13のいずれか一項に記載の光学撮像システム。
- 前記システムは更に、前記強調ダイナミックレンジ画像を表示するように操作可能に接続された表示装置を更に含む、前記請求項1〜14のいずれか一項に記載の光学撮像システム。
- 前記内視鏡の本体は、柔軟性を有さない、請求項2に記載の光学撮像システム。
- 前記内視鏡の本体は、柔軟性を有する、請求項2に記載の光学撮像システム。
- 前記照明光は、基本的に可視光から構成される、請求項1〜17のいずれか一項に記載の光学撮像システム。
- 前記照明光は、紫外線(UV)を含む、請求項1〜9及び11〜17のいずれか一項に記載の光学撮像システム。
- 前記照明光は、赤外線(IR)を含む、請求項1〜9及び11〜17のいずれか一項に記載の光学撮像システム。
- 前記システムは、前記異なる所望の波長帯域が前記内視鏡から放射されるその時間量を変えることにより、照明光の少なくとも一つの波長帯域に対して異なる強度を提供するように構成される、請求項2、16及び17のいずれか一項に記載の光学撮像システム。
- 前記システムは、前記異なる所望の波長帯域に対して放射される光の量を減衰することにより、照明光の少なくとも一つの波長帯域に対して異なる強度を提供するように構成される、請求項1〜21のいずれか一項に記載の光学撮像システム。
- 前記コンピュータ実行型プログラミングは、病気治療のための出力エネルギーのスペクトルおよび波長依存強度分布を実質的に模倣するスペクトルおよび波長依存強度分布も選択的に提供するように構成される、請求項1〜22のいずれか一項に記載の光学撮像システム。
- 前記コンピュータ実行型プログラミングは、フォトダイナミックセラピーのための出力エネルギーのスペクトルおよび波長依存強度分布を実質的に模倣するスペクトルおよび波長依存強度分布も選択的に提供するように構成される、請求項1〜22のいずれか一項に記載の光学撮像システム。
- 前記コンピュータ実行型プログラミングは、病気診断のための出力エネルギーのスペクトルおよび波長依存強度分布を実質的に模倣するスペクトルおよび波長依存強度分布も選択的に提供するように構成される、請求項1〜22のいずれか一項に記載の光学撮像システム。
- 前記コンピュータ実行型プログラミングは、前記目標物中の所望対象の検出または区別のためにコントラストを強調するための出力エネルギーのスペクトルおよび波長依存強度分布を実質的に模倣するスペクトルおよび波長依存強度分布も選択的に提供するように構成される、請求項1〜22のいずれか一項に記載の光学撮像システム。
- 前記プロセッサは、前記コントローラとして機能する、請求項1〜26のいずれか一項に記載の光学撮像システム。
- 前記特別な波長分布は、所定の波長帯域である、請求項1〜27のいずれか一項に記載の光学撮像システム。
- 良好なダイナミックレンジを有する、目標物(人を除く)の画像を得る方法であって、
a)可変選択スペクトルおよび可変波長依存強度分布を含む照明光を放射するように構成され、所望するように前記可変選択スペクトルおよび前記可変波長依存強度分布を独立して増加または減少して、前記目標物を照明するように構成された調整可能光源からの照明光を放射することと、
b)前記目標物から放射する光を検出し、前記目標物の画像をプロセッサに送信するように構成された画像センサを介して前記目標物からの放射光を感知することと、
c)前記放射光が、前記画像センサの感知素子を飽和、露光過度、または露光不足にしているかを決定することと
d)前記放射光が、前記画像センサの感知素子を飽和、露光過度、または露光不足にしている場合は、前記画像の波長を実質的に変更することなく、信号の特別な波長分布において過飽和または露光不足を補償するように構成された補償照明光を提供するために、前記照明光の前記選択スペクトルおよび波長依存強度分布を選択的に調整することと、
e)強調されたダイナミックレンジを提供するために前記光源の前記調整についてのデータと前記画像からのデータとを組み合わせることを含み、
前記調整可能光源は、
a)光源と、
b)前記光源から光路に沿って進む光ビームからスペクトルを提供できるスペクトル形成器と、前記スペクトル形成器の下流に位置し、前記スペクトル形成器に光学的に接続された画素化空間光変調器(SLM)であって、前記画像の波長分布を実質的に変更することなく、信号の特別な波長分布において過飽和または露光不足を補償する前記補償照明光の前記選択スペクトルおよび波長依存強度分布のみを実質的に通過させるように構成され、前記画素化SLMにおける画素のオン/オフパターンを制御して、実質的に照明光の所望の波長分布のみを通過させるようにするコンピュータ実行型プログラミングを含むコントローラに操作可能なように接続された前記画素化SLMとを備えた調整可能フィルタとを含み、
前記画素化SLMは、反射型画素化SLMであり、
前記反射型画素化SLMの反射面は、光阻止バリアをはさんで実質的に隣同士に並べて配置された第1および第2画素化SLM領域を提供するように構成され、前記調整可能光源は更に、前記第1画素化SLM領域からの光を前記第2画素化SLM領域に送信するように位置するように構成された少なくとも一つの光学素子を含む、方法。 - 前記目標物は、目標生体組織であり、前記方法は内視鏡を介して実行される、請求項29に記載の方法。
- 前記調整可能光源は、事実上すべての望ましくない光を除去するように直列に構成された少なくとも二つの調整可能フィルタを含む、請求項30に記載の方法。
- 前記画像センサは、前記先端部に配置される、請求項30又は31に記載の方法。
- 前記画像センサは、モノクロ画像センサである、請求項29〜32のいずれか一項に記載の方法。
- 前記方法は更に、前記光源が、それぞれが選択された、実質的に純粋な、可変分布および強度を有する照明光の複数の異なる所望の波長帯域を時間の経過と共に提供し、前記モノクロ画像センサが前記目標物から放射する光の強度を検出して前記所望の波長分布のそれぞれに対して検出光強度を提供し、前記プロセッサが前記帯域のそれぞれに対する前記検出光強度を、表示装置上の表示のための適切な選択されたカラーに関連付けるように、前記光源、画像センサ、およびプロセッサを調整するように構成されたコンピュータ実行型プログラミングを使用することを含む、請求項33に記載の方法。
- 前記補償照明光が、前記照明光と比較して実質的に単一の波長帯域においてのみ減衰される、請求項29〜34のいずれか一項に記載の方法。
- 前記単一の波長帯域は、赤、緑、青、シアン、イエロー、またはマゼンタの一つである、請求項35に記載の方法。
- 前記補償照明光が、前記照明光と比較して複数の波長帯域において減衰される、請求項29〜36のいずれか一項に記載の方法。
- 前記照明光は、蛍光励起照明光の少なくとも一つの帯域を備え、少なくとも一つのロングパスフィルタは、前記画像センサに反射して戻す前記蛍光励起照明帯域のすべてを実質的に阻止する、請求項29〜37のいずれか一項に記載の方法。
- 前記画像センサは、電荷結合素子(CCD)、相補型金属酸化膜半導体(CMOS)、電荷注入素子(CID)、およびフォトダイオードアレイの少なくとも一つを含む、請求項29〜38のいずれか一項に記載の方法。
- 前記光学撮像システムは、外科医用顕微鏡または検耳鏡である、請求項29〜39のいずれか一項に記載の方法。
- 前記方法は更に、前記強調されたダイナミックレンジ画像を表示装置に表示することを含む、請求項29〜40のいずれか一項に記載の方法。
- 前記内視鏡の本体は、柔軟性を有さない、請求項30に記載の方法。
- 前記内視鏡の本体は、柔軟性を有する、請求項30に記載の方法。
- 前記照明光は、基本的に可視光から構成される、請求項29〜43のいずれか一項に記載の方法。
- 前記照明光は、紫外線(UV)からなる、請求項29〜35及び37〜43のいずれか一項に記載の方法。
- 前記照明光は、赤外線(IR)からなる、請求項29〜35及び37〜43のいずれか一項に記載の方法。
- 前記異なる所望の波長分布が、前記内視鏡から放射されるその時間量を変えることにより、照明光の少なくとも一つの波長分布に対して異なる強度を提供することを更に含む、請求項30、42及び43のいずれか一項に記載の方法。
- 前記異なる所望の波長分布に対して放射される光の量を減衰することにより、照明光の少なくとも一つの波長分布に対して異なる強度を提供することを更に含む、請求項30〜47のいずれか一項に記載の方法。
- 前記プロセッサは、前記コントローラとして機能する、請求項29〜48のいずれか一項に記載の方法。
- 前記特別な波長分布は、所定の波長帯域である、請求項29〜49のいずれか一項に記載の方法。
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- 2004-09-27 EP EP04786669A patent/EP1709476A4/en not_active Withdrawn
- 2004-09-27 US US10/951,448 patent/US7544163B2/en not_active Expired - Fee Related
- 2004-09-27 CA CA002581668A patent/CA2581668A1/en not_active Abandoned
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US10293122B2 (en) | 2016-03-17 | 2019-05-21 | Novadaq Technologies ULC | Endoluminal introducer with contamination avoidance |
Also Published As
Publication number | Publication date |
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EP1709476A4 (en) | 2010-08-04 |
US8100826B2 (en) | 2012-01-24 |
JP2007506487A (ja) | 2007-03-22 |
US20050228231A1 (en) | 2005-10-13 |
CA2581668A1 (en) | 2005-04-07 |
EP1709476A1 (en) | 2006-10-11 |
WO2005031436A1 (en) | 2005-04-07 |
US7544163B2 (en) | 2009-06-09 |
US20100004513A1 (en) | 2010-01-07 |
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