JP5700165B2 - 光学的測定装置 - Google Patents
光学的測定装置 Download PDFInfo
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- JP5700165B2 JP5700165B2 JP2014188811A JP2014188811A JP5700165B2 JP 5700165 B2 JP5700165 B2 JP 5700165B2 JP 2014188811 A JP2014188811 A JP 2014188811A JP 2014188811 A JP2014188811 A JP 2014188811A JP 5700165 B2 JP5700165 B2 JP 5700165B2
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Description
Claims (4)
- 近位端と遠位端との間で光を伝送する光ファイバと、前記近位端において前記光ファイバと接続されている光コネクタと、前記遠位端において前記光ファイバと接続され、前記光ファイバの前記遠位端から出射される光を集光する集光光学系と、前記遠位端において前記光ファイバと接続され、前記光ファイバの前記遠位端から出射される光を偏向する偏向光学系と、前記光ファイバを包囲して前記光ファイバに沿って延び、前記光ファイバ,前記光コネクタ,前記集光光学系および前記偏向光学系に対して回転自在であるジャケットチューブとを備える光プローブと、
波長帯域1.6μm〜1.8μmにおいて光を発生させる光源と、
前記光源から発せられた光を2分岐して照明光および参照光として出力する光分岐部と、
前記波長帯域において光を検出する光検出器と、
前記波長帯域において光減衰スペクトルを分析して当該分析結果を画像情報として取得する分析部と
を含み、
前記光分岐部から出力された照明光を前記光ファイバの前記近位端に入射させ前記遠位端から出射させて対象物に照射し、その照射に伴い前記対象物で生じた後方反射光を前記光ファイバの前記遠位端に入射させ前記近位端から出射させて前記光検出器に導くとともに、前記光分岐部から出力された参照光をも前記光検出器に導いて、前記後方反射光と前記参照光とによる干渉光を前記光検出器により検出し、
前記分析部により前記干渉光のスペクトルをフーリエ解析することにより前記対象物の断層構造情報を生成するとともに、前記干渉光のスペクトルにおける光の吸収を分析することにより前記対象物内部における脂質の分布情報を生成し、
前記断層構造情報と前記脂質の分布情報とを合わせて解析することで、前記対象物内部における前記脂質の分布を表示した断層画像を計算する、
光学的測定装置。 - 前記光ファイバが1.53μmより短いカットオフ波長を有する、
請求項1に記載の光学的測定装置。 - 前記分析部により、前記干渉光のスペクトルのうち波長範囲1.70〜1.75μmに吸収ピークを持つスペクトル成分を抽出し、前記スペクトル成分に基づいて脂質の分布情報と断層構造情報とを生成し、前記脂質の分布情報と前記断層構造情報とを合わせて解析することで、脂質を分布表示した断層画像を計算する、
請求項1または2に記載の光学的測定装置。 - 前記分析部において、前記対象物内部における前記脂質の散乱強度の情報を保持し、前記脂質の分布に関する複数の解の中から、前記散乱強度の情報に最も整合する解を選択する、
請求項1または2に記載の光学的測定装置。
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JP2012193316A Division JP5708599B2 (ja) | 2012-09-03 | 2012-09-03 | 光プローブ |
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JP5700165B2 true JP5700165B2 (ja) | 2015-04-15 |
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Families Citing this family (1)
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JP7560103B2 (ja) | 2020-10-27 | 2024-10-02 | 国立大学法人 宮崎大学 | 内腔の微小変形の検査装置の作動方法および検査装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000097846A (ja) * | 1998-09-21 | 2000-04-07 | Olympus Optical Co Ltd | 光走査プローブ装置 |
JP2003121347A (ja) * | 2001-10-18 | 2003-04-23 | Fuji Photo Film Co Ltd | グルコース濃度測定方法および測定装置 |
US7952719B2 (en) * | 2007-06-08 | 2011-05-31 | Prescient Medical, Inc. | Optical catheter configurations combining raman spectroscopy with optical fiber-based low coherence reflectometry |
JP2012010776A (ja) * | 2010-06-29 | 2012-01-19 | Fujifilm Corp | 断層画像処理装置及び方法、並びに光干渉断層画像診断装置 |
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