JP2018536481A - 側枝に対するステントストラットの検出 - Google Patents
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Abstract
Description
本出願は、2015年11月18日に出願された、米国仮特許出願第62/257,185号の優先権の利益を主張し、その開示は、その全体が参照により本明細書に援用される。
ここで、γxyは測定値間の相関係数であり、
x及びyは測定値であり、xは検出された潜在的ストラットに対応し、yはモデルストラットに対応する。
μx及びμyはこれらの測定のそれぞれの平均であり、
σx及びσyはこれらの測定値のそれぞれの標準偏差である。
Claims (20)
- 血管の表示においてステントストラットを検出する方法であって、前記方法は:
血管内診断システムによってアクセス可能なメモリに、走査線の第1のグループを含む血管内データを格納するステップと;
前記血管内データの側枝を検出するステップと;
検出された前記側枝のうちの1つ又は複数の中の走査線の第2のグループを識別するステップと;
前記走査線の第2グループにおける各前記走査線のピーク強度を決定するステップと;
閾値T以下のピーク強度を有する前記第2グループにおける走査線の第3のグループを識別するステップであって、前記第3のグループは、ステントストラット画像データを含むことの候補である検出された側枝の1つ又は複数の走査線を含む、ステップと;
ステントストラットデータを含む1つ又は複数の走査線を識別するように前記候補を検証するステップと;を含む、
方法。 - 前記検証するステップは、各前記候補が前記ステントストラット画像データを含むことに対して偽陽性であるかどうかを決定するステップを含む
請求項1に記載の方法。 - 前記検証するステップは、相関係数を使用して、前記の候補ステントストラット画像データをモデルステントストラット画像データと比較するステップを含む、
請求項1に記載の方法。 - 前記相関係数は線形相関係数である、
請求項3に記載の方法。 - 前記各候補が前記ステントストラット画像データを含むことに対して偽陽性であるかどうかを決定するステップは、検出された前記の候補ステントストラット画像データをモデルステントストラット画像データと比較するステップを含む、
請求項2に記載の方法。 - 前記各走査線のピーク強度を決定するステップの後、前記方法は、前記側枝の前記走査線をサンプルに分割するステップを含む、
請求項1に記載の方法。 - モデルストラットに対して検証する前に、隣接する隣接走査線をクラスタリングするステップをさらに含む、
請求項1に記載の方法。 - 検出された前記ストラットのリストに検証されたストラットを追加するステップをさらに含む、
請求項1に記載の方法。 - 強度>線におけるピーク強度を有するサンプルの数が候補ストラットについての閾値Tより大きい場合、前記候補ストラット又は前記候補ストラットを含む前記走査線を破棄する、
請求項6に記載の方法。 - 各前記側枝に対する開始フレーム及び終了フレームを決定するステップをさらに含む、
請求項1に記載の方法。 - 血管の表示におけるステントストラットを検出するための自動プロセッサベースのシステムであって、前記システムは:
1つ又は複数のメモリデバイスと;
前記メモリデバイスと通信するコンピューティングデバイスと;を有し、
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:
血管内診断システムによってアクセス可能なメモリに、走査線の第1のグループを含む血管内データを格納させ;
前記血管内データにおいて側枝を検出させ;
検出された前記側枝のうちの1つ又は複数の中の走査線の第2のグループを識別させ;
前記走査線の第2グループにおける各前記走査線のピーク強度を決定させ;
ステントストラット画像データを含むことの候補である前記検出された側枝の1つ又は複数の走査線を含む走査線の第3のグループを、閾値T以下のピーク強度を有する前記第2のグループにおいて識別させ;
ステントストラットデータを含む1つ又は複数の走査線を識別するよう前記候補を検証させる;
ように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む、
システム。 - ステップを検証するための命令は、各前記候補が前記ステントストラット画像データを含むことに対して偽陽性であるかどうかを決定するステップを含む、
請求項11に記載のシステム。 - ステップを検証するための命令は、相関係数を使用して候補ステントストラット画像データをモデルステントストラット画像データと比較するステップを含む、
請求項11に記載のシステム。 - 前記相関係数は線形相関係数である、
請求項13に記載のシステム。 - 前記コンピューティングデバイスは、前記コンピューティングデバイスに、各前記候補がステントストラット画像データを含むことに対して偽陽性であるかどうかを判定させる命令をさらに含むことが、前記検出された候補ステントストラット画像データをモデルステントストラット画像データと比較するステップを含む、
請求項11に記載のシステム。 - 各前記走査線のピーク強度を決定した後、前記コンピューティングデバイスは、前記コンピューティングデバイスに前記側枝の前記走査線をサンプルに分割させるさらなる命令を含む、
請求項11に記載のシステム。 - 前記コンピューティングデバイスは、モデルストラットに対して検証する前に、前記コンピューティングデバイスに隣接する隣接走査線をクラスタリングさせるさらなる命令を含む、
請求項11に記載のシステム。 - 前記コンピューティングデバイスは、前記コンピューティングデバイスに、検出された前記ストラットのリストに検証されたストラットを追加させるさらなる命令を含む、
請求項11に記載のシステム。 - 強度>線におけるピーク強度を有する前記サンプルの数が候補ストラットについての閾値Tより大きい場合、前記候補ストラット又は前記候補ストラットを含む前記走査線を破棄する、
請求項16に記載のシステム。 - 前記コンピューティングデバイスは、前記コンピューティングデバイスに各前記側枝の開始フレーム及び終了フレームを決定させるさらなる命令を含む、
請求項11に記載のシステム。
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US201562257185P | 2015-11-18 | 2015-11-18 | |
US62/257,185 | 2015-11-18 | ||
US14/975,462 US10140712B2 (en) | 2015-05-17 | 2015-12-18 | Detection of stent struts relative to side branches |
US14/975,462 | 2015-12-18 | ||
PCT/US2016/062213 WO2017087477A1 (en) | 2015-11-18 | 2016-11-16 | Detection of stent struts relative to side branches |
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JP6961589B2 JP6961589B2 (ja) | 2021-11-05 |
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US (1) | US10453196B2 (ja) |
EP (2) | EP3871589A1 (ja) |
JP (1) | JP6961589B2 (ja) |
CN (1) | CN108348170B (ja) |
CA (1) | CA3005242A1 (ja) |
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EP3871589A1 (en) | 2021-09-01 |
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