JP2021525587A - ステント拡張ディスプレイ、システム及び方法 - Google Patents
ステント拡張ディスプレイ、システム及び方法 Download PDFInfo
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Abstract
Description
本出願は、2018年5月29日に出願された米国仮特許出願第62/677,623号に対する優先権を主張するものであり、この内容全体を引用することにより本明細書の一部をなすものとする。
一部において、本開示は、ステントを可視化するためのコンピュータベースの方法、システム、及びデバイスに関する。1つの実施形態において、本開示は、ステント留置血管の拡張、及び、更なる拡張が必要とされるか否か又はステント再位置決めが必要とされるか否かを評価する方法に関する。これらの評価方法は、ステントの1つ以上のビューを、血管に対して拡張した状態等、種々の状態で表示すること、及び、画像化されたステントを、1つ以上の選択されたステントプロファイルに対して比較することを含むことができる。1つの実施形態において、方法は自動的に実施される。本開示の方法は、ステント計画ソフトウェア及び病変前処置(lesion preparation)ソフトウェアを含むことができる(又はその逆も同様である)ステントプロファイル解析ソフトウェア等のソフトウェアを使用して実装することができる。
Claims (25)
- 管腔を画定する血管内のステント拡張を評価する方法であって、
血管画像データの第1のセットを取得するために第1の画像化システムを使用してステント留置血管をスキャンすることと、
血管画像データの前記第1のセットを、前記第1の画像化システムと電気通信状態にある電子メモリデバイスに記憶することと、
1つ以上のソフトウェアモジュールを使用して前記ステント留置血管の長さに沿ってステントストラットを検出することと、
ステント拡張のレベルを示す前記血管のセグメントの第1の表現を生成することと、
前記検出されたステントストラットを使用して、前記ステントの第1の端部及び前記ステントの第2の端部を決定することと、
前記ステントの前記第1の端部からの第1のオフセット距離(D1)及び前記ステントの前記第2の端部からの第2のオフセット距離(D2)を規定することと、
前記セグメントのテーパリングプロファイルと組み合わせてD1及びD2を使用して、前記血管の前記セグメントの第2の表現を生成することと、
前記セグメントの前記長さに沿う異なる位置において、前記第1の表現に関連する第1の値を前記第2の表現に関連する第2の値と比較することによって、血管セグメントに沿う目標ステント拡張のレベルを決定することと
を含んでなる方法。 - 前記血管は第1の処置中に1つ以上のステントを受け取り、前記ステント留置血管の前記スキャンは、前記第1の処置の延長としての診断解析として実施される、請求項1に記載の方法。
- 前記第1の表現は前記ステント留置血管の第1の管腔プロファイルであり、前記管腔プロファイルは、前記セグメントの長さに沿うステントの実際の拡張レベルに基づいて生成される、請求項1に記載の方法。
- 前記第2の表現は、D1及びD2のそれぞれにおける前記血管の幾何学的値に基づいて生成された第2の管腔プロファイルであり、前記第2の管腔プロファイルは、前記血管の前記幾何学的値及び前記テーパリングプロファイルに基づいて補間される、請求項3に記載の方法。
- 前記方法は、前記セグメントに沿う1つ以上の側枝を検出することを更に含み、前記第2の管腔プロファイルの補間は、1つ以上の検出された側枝を使用して生成される、請求項4に記載の方法。
- 前記血管の前記幾何学的値は、面積、直径、コード、ユークリッド距離メトリック、及び体積からなる群から選択される、請求項4に記載の方法。
- 前記目標ステント拡張のレベルを決定することは、前記セグメントに沿う複数の位置における、前記第1の管腔プロファイルの前記第1の値と前記第2の管腔プロファイルの前記第2の値との比を使用して、ステント拡張閾値に対してステント拡張の程度を決定することを更に含む、請求項4に記載の方法。
- 前記第1の表現は、前記血管の1つ以上のビューを含み、前記血管の1つ以上のビューは、検出されたステントストラット及び前記血管の前記管腔の表現を表示する、請求項1に記載の方法。
- 前記ステント留置血管の前記スキャンは、光コヒーレンス断層撮影、血管造影、超音波、X線、光画像化、圧力検知、流れ検知及び断層画像化を使用して実施される、請求項1に記載の方法。
- 前記ステント留置血管の前記スキャンは、前記血管を通して引き戻される血管内データ収集プローブを使用して実施される、請求項1に記載の方法。
- 前記ステント留置血管の前記スキャンは、血管画像データの前記第1のセットからの影又は反射の1つ以上を使用して実施される、請求項1に記載の方法。
- D1及びD2は、ステントが留置されたときの、ユーザ選択目標着地ゾーンに対する近接性に基づいて選択される、請求項1に記載の方法。
- 前記血管内でのステントの展開後に、血管管腔プロファイルを、1つ以上のコンピューティングデバイスを使用して生成することを更に含む、請求項1に記載の方法。
- 前記血管の1つ以上のビュー及び/又は前記第1の血管表現を表示することと、前記血管の前記セグメントの長さに沿うステントの不十分な拡張の領域を示す1つ以上の視覚的キューを表示することとを更に含む、請求項1に記載の方法。
- 前記血管のセグメントの長さに沿う側枝を検出することと、前記側枝を前記管腔に対して表示することとを更に含む、請求項1に記載の方法。
- 前記側枝は、前記第1の表現に対して、ドット、楕円、円、又は他の形状として表示される、請求項15に記載の方法。
- 前記第1の表現は、画像化システムのユーザインタフェースを使用して表示される、請求項1に記載の方法。
- 前記血管を血管造影システムによってスキャンすることと、血管造影データに、前記検出されたステントストラット並びにステント拡張閾値を超えるステント拡張を示す第1の視覚的キュー及び前記ステント拡張閾値未満のステント拡張を示す第2の視覚的キューを共記載することとを更に含む、請求項1に記載の方法。
- ステントを含む前記第1の表現の領域を視覚的に強調することを更に含む、請求項1に記載の方法。
- ユーザインタフェースは、前記領域に対して別の視覚的要素のコントラスト、輝度、カラーを変更することによって前記領域を強調する、請求項19に記載の方法。
- D1及びD2は、0.1mm〜1.0mmに及ぶ距離から選択される、請求項4に記載の方法。
- 前記方法は、前記セグメントに沿って1つ以上の側枝を検出することを更に含み、前記セグメントのテーパリングプロファイルを決定することは、少なくとも1つの検出された側枝の直径に基づいてプロファイルを調整することを含む、請求項1に記載の方法。
- 最小拡張フレームを決定することと、前記最小拡張フレームの指標を表示することとを更に含む、請求項1に記載の方法。
- ステント留置血管内のステント拡張を評価するためのプロセッサベースのシステムであって、
1つ以上のメモリデバイスと、
前記メモリデバイスと通信状態にあるコンピューティングデバイスと
を備えており、前記メモリデバイスは前記コンピューティングデバイスによって実行可能な命令を含み、前記命令は、前記コンピューティングデバイスに対し、
血管画像データの第1のセットであって、第1の画像化システムによって前記血管をスキャンすることによって生成される、血管画像データの前記第1のセットを、前記第1の画像化システムと電気通信状態にある電子メモリに記憶することと、
1つ以上のソフトウェアモジュールを使用して前記ステント留置血管の長さに沿ってステントストラットを検出することと、
ステント拡張のレベルを示す前記血管のセグメントの第1の表現を生成することと、
前記検出されたステントストラットを使用して、前記ステントの第1の端部及び前記ステントの第2の端部を決定することと、
前記ステントの前記第1の端部からの第1のオフセット距離(D1)及び前記ステントの前記第2の端部からの第2のオフセット距離(D2)を規定することと、
前記セグメントのテーパリングプロファイルと組み合わせてD1及びD2を使用して、前記血管の前記セグメントの第2の表現を生成することと、
前記セグメントの長さに沿う異なる位置において、前記第1の表現に関連する第1の値を前記第2の表現に関連する第2の値と比較することによって、血管セグメントに沿う目標ステント拡張のレベルを決定することと
を実行させるシステム。 - 前記第1の値は第1の面積又は第1の直径であり、前記第2の値は第2の面積又は第2の直径である、請求項24に記載のシステム。
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