JP2013544176A - 超音波を使用した解剖学的モデルの改良 - Google Patents
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Abstract
Description
本願は、2010年12月27日に出願された米国特許出願第12/979,170号明細書に対する優先権及びその利益を主張し、これは本明細書に全て記載されたものとして本明細書によって参照により援用される。
P=[x,y,z,C1,C2,・・・,Cn] 式1
Claims (20)
- 解剖学的モデルを改良する方法であって、
可変強度を有する二次元心エコー図を取得するステップと、
前記二次元心エコー図を複数のマッピングポイントに関連付けるステップであって、前記マッピングポイントは三次元モデル空間に存在するステップと、
マッピングポイントの信頼値を特定するステップであって、前記信頼値は、前記二次元心エコー図上のポイントでの強度に対応するステップと、
を含む、方法。 - マッピングポイントを、そのポイントの前記特定された信頼値に対応する視覚的属性を用いて表示するステップをさらに含む、請求項1に記載の方法。
- 前記視覚的属性は、ある範囲の信頼値に対応するスペクトルから選択される色である、請求項2に記載の方法。
- 前記視覚的属性は、ある範囲の信頼値を表すシンボルである、請求項2に記載の方法。
- 前記複数のマッピングポイントのセットは、前記三次元モデル空間内に三次元モデルを定義する、請求項1に記載の方法。
- 前記モデルセットに属さないマッピングポイントの前記信頼値を閾値と比較するステップと、
前記ポイントの前記信頼値が前記閾値を超える場合、前記マッピングポイントを前記モデルセットに追加するステップと、
をさらに含む、請求項5に記載の方法。 - 前記二次元心エコー図は、カテーテルの遠位部分に関連付けられた超音波トランスデューサから取得される、請求項1に記載の方法。
- 前記二次元心エコー図を複数のマッピングポイントに関連付けるステップは、
前記超音波トランスデューサの位置及び向きの指標を受信することと、
前記超音波トランスデューサの前記位置及び前記向きを使用して、前記二次元心エコー図を前記三次元モデル空間内に配置することと
を含む、請求項7に記載の方法。 - 前記超音波トランスデューサの前記位置及び前記向きの前記指標は、前記カテーテルの前記遠位端部に関連付けられたセンサから受信される、請求項8に記載の方法。
- 前記二次元心エコー図の表現を前記三次元モデル空間内に表示するステップをさらに含む、請求項8に記載の方法。
- マッピングポイントのセットが、前記三次元モデル空間内に三次元モデルを定義し、
前記二次元心エコー図を複数のマッピングポイントに関連付けるステップは、
前記二次元心エコー図の平面に一致する境界情報を前記モデルから抽出することと、
前記抽出された境界情報を前記二次元心エコー図の表現に重ねることと
を含む、請求項8に記載の方法。 - 前記二次元心エコー図を複数のマッピングポイントに関連付けるステップは、三次元心エコー図強度モデルを前記三次元モデル空間内に生成することをさらに含む、請求項8に記載の方法。
- 前記三次元心エコー図強度モデルは複数のボクセルを含み、各ボクセルは、取得された1つ又は複数の二次元心エコー図の部分の強度に関連する強度を有する、請求項12に記載の方法。
- 前記三次元心エコー図強度モデルは、連続して取得される二次元心エコー図に関して更新される、請求項12に記載の方法。
- 前記更新は、ベイズ推論アルゴリズムに従って行われる、請求項14に記載の方法。
- 解剖学的モデルの正確性を評価するシステムであって、
三次元モデル空間に存在する複数のマッピングポイントを内部に記憶したデータベースと、
可変強度を有する二次元心エコー図を取得するように構成された超音波エコー撮像システムと、
前記二次元心エコー図の位置及び向きを特定するように構成された位置感知システムと、
前記二次元心エコー図を前記複数のマッピングポイントに関連付けるように構成されるとともに、マッピングポイントの信頼値を特定するようにさらに構成されるプロセッサであって、前記信頼値は、前記二次元心エコー図でのポイントの強度に対応する、プロセッサと、
を備える、システム。 - 前記マッピングポイントのセットは解剖学的モデルを定義する、請求項16に記載のシステム。
- 前記プロセッサは、信頼値を閾値と比較し、前記信頼値が前記閾値を超える場合、前記マッピングポイントのセットを変更するようにさらに構成される、請求項17に記載のシステム。
- 前記プロセッサは、前記二次元心エコー図の表現及び1つ又は複数のマッピングポイントを含む補強エコー画像を表示するようにさらに構成され、前記表示される1つ又は複数のマッピングポイントのそれぞれは、各信頼値に対応する視覚的属性を有する、請求項16に記載のシステム。
- 前記二次元心エコー図を前記複数のマッピングポイントに関連付けることは、前記二次元心エコー図から三次元超音波モデルを生成することを含む、請求項16に記載のシステム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US12/979,170 US10524765B2 (en) | 2010-12-27 | 2010-12-27 | Refinement of an anatomical model using ultrasound |
US12/979,170 | 2010-12-27 | ||
PCT/US2011/051443 WO2012091763A1 (en) | 2010-12-27 | 2011-09-13 | Refinement of an anatomical model using ultrasound |
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JP2013544176A true JP2013544176A (ja) | 2013-12-12 |
JP5679609B2 JP5679609B2 (ja) | 2015-03-04 |
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JP2013541984A Active JP5679609B2 (ja) | 2010-12-27 | 2011-09-13 | 超音波を使用した解剖学的モデルの改良 |
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US (2) | US9717478B2 (ja) |
EP (1) | EP2618739B1 (ja) |
JP (1) | JP5679609B2 (ja) |
WO (1) | WO2012091763A1 (ja) |
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JP5679609B2 (ja) | 2015-03-04 |
EP2618739A4 (en) | 2015-07-01 |
EP2618739A1 (en) | 2013-07-31 |
US9717478B2 (en) | 2017-08-01 |
US20120165672A1 (en) | 2012-06-28 |
EP2618739B1 (en) | 2018-02-07 |
WO2012091763A1 (en) | 2012-07-05 |
US10524765B2 (en) | 2020-01-07 |
US20120165664A1 (en) | 2012-06-28 |
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