JP2011519281A - 光学的方位分解能を備えた共焦点光音響顕微鏡検査 - Google Patents
光学的方位分解能を備えた共焦点光音響顕微鏡検査 Download PDFInfo
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Abstract
Description
本発明は、助成金R01 EB000712及びR01 NS46214による政府支援でなされ、その両方とも米国国立衛生研究所によって付与された。政府は発明の一定の権利を有している。
ある態様では、非侵襲的に散乱媒体を画像化する方法が提供される。その方法は、光パルスを、集束アセンブリを用いて対象物の内部の所定領域に集束させる工程と、光音響信号を音波に変換する工程であって、前記光音響信号は、前記光パルスに応じて前記対象物から発せられる変換工程と、を含んでいる。その方法はまた、トランスデューサを用いて前記音波を検出する工程であって、前記トランスデューサと前記集束アセンブリとが共軸且つ共焦点になるように位置決めされている、音波検出工程と、前記音波の前記トランスデューサ表現(the transducer representative of the acoustic wave)によって生成される信号に基づいて、前記対象物の内部の前記所定領域の画像を作成する工程と、を含むことを特徴とする。
本発明の様々な実施態様の製作及び使用が以下に詳細に説明されるが、ここに記載された実施態様は、幅広い様々な状況で具体化されるであろう多くの適用可能な発明の概念を提供するものである、と認識されるべきである。本願明細書で検討された実施態様は、発明の実施態様を製作例及び使用例を単に説明するものであり、本発明の範囲を定めるものではない。
Claims (19)
- 散乱媒体を非侵襲的に画像化する方法であって、当該方法は、
少なくとも1つの光パルスを、集束アセンブリを用いて対象物の内部の所定領域に集束させる工程と、
光音響信号を音波に変換する工程であって、前記光音響信号は、前記光パルスに応じて前記対象物から発せられる、変換工程と、
少なくとも1つのトランスデューサを用いて前記音波を検出する工程であって、前記トランスデューサと前記集束アセンブリとが共軸且つ共焦点になるように位置決めされている、音波検出工程と、
前記音波の前記トランスデューサ表現によって生成される信号に基づいて、前記対象物の内部の前記所定領域の画像を作成する工程と、を含むことを特徴とする方法。 - 前記少なくとも1つの光パルスを集束させる工程は、前記少なくとも1つの光パルスが前記トランスデューサの焦点に集光するように、前記少なくとも1つの光パルスを、集束光学システムを用いて集束させる過程を含むことを特徴とする請求項1に記載の方法。
- 前記少なくとも1つの光パルスを集束させる工程は、空間分解能の上昇を容易にするために前記集束光学システムの焦点を縮小する過程をさらに含むことを特徴とする請求項2に記載の方法。
- 前記画像を作成する工程は、前記対象物の内部の前記所定領域を画像化できるように、受信した前記音波を記録しデジタル化する過程を含むことを特徴とする請求項1に記載の方法。
- 共焦点光音響画像化装置であって、
少なくとも1つの光パルスを受光して、前記光パルスを対象物の内部の領域に集束させるように構成された集束アセンブリと、
前記光パルスに応じて前記対象物から発せられた音波を受信するように構成された少なくとも1つのトランスデューサであって、前記少なくとも1つのトランスデューサと前記集束アセンブリとが共軸になるように位置決めされている前記少なくとも1つのトランスデューサと、
受信した前記音波を記録し処理するように構成されたプロセッサと、を含むことを特徴とする共焦点光音響画像化装置。 - 前記集束アセンブリは、前記集束アセンブリの焦点が少なくとも1つの超音波トランスデューサの焦点と一致するように、前記少なくとも1つの光パルスを前記対象物に集束させるように構成されたレンズ及びミラーの光学アセンブリを含むことを特徴とする請求項5に記載の共焦点光音響画像化装置。
- 前記集束アセンブリは、前記装置の軸位置の調整と同時に前記対象物の表面に沿ったラスタースキャンを行って前記対象物の表面の曲率を補正するために、XYZ移動ステージ上に位置していることを特徴とする請求項5に記載の共焦点光音響画像化装置。
- 前記集束アセンブリは、前記少なくとも1つの光パルスをほぼ回折限界点に集束させるように構成された光学顕微鏡の対物レンズを含むことを特徴とする請求項5に記載の共焦点光音響画像化装置。
- 前記集束アセンブリは、前記対象物の内部の前記領域上に小さいピンホールの画像を形成するように構成された対物レンズを含むことを特徴とする請求項5に記載の共焦点光音響画像化装置。
- 前記集束アセンブリは、前記少なくとも1つのトランスデューサの焦点領域よりも大きい焦点領域内の光学的焦点を迅速にスキャンするように構成された振動ミラーを含むことを特徴とする請求項5に記載の共焦点光音響画像化装置。
- 少なくとも1つの光パルスを発するように構成されたレーザと、
前記少なくとも1つの光パルスを受光して、前記光パルスを対象物の内部の領域に集束させるように構成された集束アセンブリと、
前記光パルスに応じて前記対象物から発せられた音波を受信するように構成された少なくとも1つの超音波トランスデューサであって、前記集束アセンブリの焦点が前記少なくとも1つの超音波トランスデューサの焦点と一致するように、前記少なくとも1つの光パルスを前記対象物上に集束させるようにさらに構成された前記超音波トランスデューサと、
前記音波を処理して前記対象物の内部の前記領域の画像を生成するように構成された電子システムと、を含むことを特徴とする共焦点光音響顕微鏡システム。 - 前記集束アセンブリは、前記装置の軸位置の調整と同時に前記対象物の表面に沿ったラスタースキャンを行って前記対象物の表面の曲率を補正するために、XYZ移動ステージ上に位置していることを特徴とする請求項11に記載の共焦点光音響顕微鏡システム。
- 前記集束アセンブリは、前記少なくとも1つの光パルスをほぼ回折限界点に集束させるように構成された光学顕微鏡の対物レンズを含むことを特徴とする請求項11に記載の共焦点光音響顕微鏡システム。
- 前記集束アセンブリは、前記対象物の内部の前記領域上に小さいピンホールの画像を形成するように構成された対物レンズを含むことを特徴とする請求項11に記載の共焦点光音響顕微鏡システム。
- 前記集束アセンブリは、少なくとも1つの集束された光パルスを発するように構成されたシングルモード光ファイバを含むことを特徴とする請求項11に記載の共焦点光音響顕微鏡システム。
- 前記集束アセンブリは、前記少なくとも1つのトランスデューサの焦点領域よりも大きい焦点領域内の光学的焦点を迅速にスキャンするように構成された振動ミラーを含むことを特徴とする請求項11に記載の共焦点光音響顕微鏡システム。
- 前記電子システムは、前記音波を記録し、そして前記画像を生成するために、記録した前記音波を前記集束アセンブリの対応位置に対して表示するように構成されていることを特徴とする請求項11に記載の共焦点光音響顕微鏡システム。
- 前記電子システムは、前記対象物に関するレーザ焦点のプログラムされた位置で、データ収集と前記対象物スキャンとを前記少なくとも1つの光パルスと同期させるように構成されたモータコントローラを含むことを特徴とする請求項17に記載の共焦点光音響顕微鏡システム。
- 手持ちデバイスを用いて、生物組織内のヘモグロビン吸収率を決定する方法であって、当該方法は、
少なくとも1つの光パルスを、少なくとも1つの励起波長を用いて対象物の内部の所定領域に集束させる工程であって、蛍光信号が、少なくとも局所的な励起光学フルエンスと所定領域の蛍光の特性とに基づいている、集束工程と、
前記少なくとも1つの光パルスに応じて前記対象物から発せられた光音響信号を受信する工程であって、前記光音響信号が、前記局所的な励起光学フルエンスと、ヘモグロビンの光吸収係数と、音響検出感度との産物である、受信工程と、
前記蛍光信号と前記光音響信号とに少なくとも部分的に基づいているヘモグロビンの吸収係数に基づいて、前記ヘモグロビン吸収率を決定する工程と、を含むことを特徴とする方法。
手持ちるデバイスを用いて、生物組織内の酸素消費量(MRO2)を決定する方法であって、当該方法は、
少なくとも1つの光パルスを、対象物の内部の所定領域に集束させる工程と、
前記少なくとも1つの光パルスに応じて前記対象物から発せられた音波を受信する工程と、
前記所定領域内に流入する血管の面積と、流入する血管内の平均血流速度と、ヘモグロビンの総濃度と、に基づいて前記MRO2を決定する工程であって、
前記流入する血管の前記面積及び前記平均血流速度は、超音波画像、光コヒーレンストモグラフィー及び血流イメージング技術のうちの1つによって得られた測定結果に基づいており、
前記ヘモグロビンの総濃度は、少なくとも1つの光パルスによって得られた測定結果に基づいている、MRO2決定工程と、を含むことを特徴とする方法。
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JP7080239B6 (ja) | 2016-12-28 | 2022-06-23 | コーニンクレッカ フィリップス エヌ ヴェ | 光ベースの皮膚処置装置 |
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WO2021059811A1 (ja) * | 2019-09-27 | 2021-04-01 | 株式会社タムロン | 光音響素子、光音響イメージング装置、及び、光音響素子の製造方法 |
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JP5643101B2 (ja) | 2014-12-17 |
JP6006773B2 (ja) | 2016-10-12 |
WO2009055705A2 (en) | 2009-04-30 |
EP2203733A4 (en) | 2014-01-01 |
WO2009055705A3 (en) | 2009-06-11 |
US20160081558A1 (en) | 2016-03-24 |
US10433733B2 (en) | 2019-10-08 |
US8454512B2 (en) | 2013-06-04 |
CN101918811B (zh) | 2013-07-31 |
US20130245406A1 (en) | 2013-09-19 |
JP2015062678A (ja) | 2015-04-09 |
US20160249812A1 (en) | 2016-09-01 |
US9226666B2 (en) | 2016-01-05 |
EP2203733A2 (en) | 2010-07-07 |
EP2203733B1 (en) | 2017-05-03 |
US20100268042A1 (en) | 2010-10-21 |
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EP3229010A2 (en) | 2017-10-11 |
CN101918811A (zh) | 2010-12-15 |
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