JP2018130541A - 融合アプローチを用いた人の冠動脈疾患の検出のための方法およびシステム - Google Patents
融合アプローチを用いた人の冠動脈疾患の検出のための方法およびシステム Download PDFInfo
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Abstract
Description
本特許出願は、2016年2月16日に出願されたインド国特許出願第201721005479号の優先権を主張する。
Claims (17)
- 人の冠動脈疾患(CAD)の検出のための非侵襲的方法であって、
複数の生体センサを用いて前記人から複数の生体信号をキャプチャするプロセッサ実装ステップ、
信号処理モジュールを用いて複数の雑音を除去するために前記複数の生体信号を処理するプロセッサ実装ステップ、
特徴抽出モジュールを用いて前記処理された生体信号の各々から時間領域特徴、周波数領域特徴、時間−周波数領域特徴および統計的特徴を抽出するプロセッサ実装ステップ、
生体信号分類器を用いて前記特徴の各々から前記人を独立にCADまたは正常に分類するプロセッサ実装ステップであって、前記分類は教師あり機械学習技術を用いて行われるプロセッサ実装ステップ、
前記生体信号分類器の出力を融合するプロセッサ実装ステップ、ならびに
事前に定められた基準に基づき前記生体信号分類器の前記融合された出力を用いて前記人の冠動脈疾患の存在を検出するプロセッサ実装ステップ、
を含む方法。 - 前記生体信号分類器の前記出力間に分類ミスマッチがある場合、前記事前に定められた基準は信頼性の高い分類器を選択するステップを含む、請求項1に記載の方法。
- 前記信頼性の高い分類器は、前記生体信号分類器の各々のうち最も高い確率スコアを有する前記分類器の結果に基づき選択される、請求項2に記載の方法。
- 前記複数の信号は心音図(PCG)信号、指尖容積脈波(PPG)信号および心電図(ECG)信号のうちの少なくとも1つまたは複数を含む、請求項1に記載の方法。
- 前記生体信号分類器はPCG分類器、PPG分類器およびECG分類器を含む、請求項1に記載の方法。
- 前記指尖容積脈波(PPG)信号は前記人の身体末梢部位から抽出される、請求項1に記載の方法。
- 前記人の身体末梢部位は指先、耳、つま先または額の少なくとも1つである、請求項6に記載の方法。
- ECG信号は携帯型単極誘導ECG検査機からキャプチャされ、PCGはデジタル聴診器を用いてキャプチャされる、請求項1に記載の方法。
- 前記特徴は心拍の形状および心拍変動(HRV)に対応する特徴の組み合わせのセットである、請求項1に記載の方法。
- 前記心拍の形状および心臓弁機能に対応する特徴は広帯域PCG信号を用いて抽出される、請求項9に記載の方法。
- 詳細な前記心拍変動に対応する前記特徴は狭帯域PPG信号およびECG信号を用いて抽出される、請求項9に記載の方法。
- 冠動脈疾患(CAD)患者および非冠動脈疾患(CAD)患者の前記分類は機械学習方法を使用することにより行われる、請求項1に記載の方法。
- 前記方法はセンサ非依存的である、請求項1に記載の方法。
- 500Hzを超える周波数で前記PCG信号にフィルタをかけるためローパスフィルタを使用するステップをさらに含む、請求項1に記載の方法。
- 0.5Hz〜10Hzの周波数で前記PPG信号にフィルタをかけるためバンドパスフィルタを使用するステップをさらに含む、請求項1に記載の方法。
- 人の冠動脈疾患(CAD)の検出のための非侵襲的システムであって、
前記人から複数の生体信号をキャプチャするための複数の生体センサと、
メモリと、
前記メモリと通信するプロセッサであり、
複数の雑音を除去するため前記複数の生体信号を処理する信号処理モジュール、
前記処理された生体信号の各々から時間領域特徴、周波数領域特徴、時間−周波数領域特徴および統計的特徴を抽出するための特徴抽出モジュール、
生体信号分類器を用いて前記特徴の各々から前記人を独立にCADまたは正常に分類するための分類モジュールであり、前記分類は教師あり機械学習技術を用いて行われる、分類モジュール、
前記生体信号分類器の出力を融合するための融合モジュール、ならびに
事前に定められた基準に基づき前記生体信号分類器を用いて前記人の前記冠動脈疾患の存在を検出するための検出モジュール、
をさらに含む、プロセッサと、
を含む、非侵襲的システム。 - 1つまたは複数の非一時的機械可読情報記憶媒体であって、1つまたは複数のハードウェアプロセッサにより実行されると、
複数の生体センサを用いて人から複数の生体信号をキャプチャすること、
信号処理モジュールを用いて複数の雑音を除去するため前記複数の生体信号を処理すること、
特徴抽出モジュールを用いて前記処理された生体信号の各々から時間領域特徴、周波数領域特徴、時間−周波数領域特徴および統計的特徴を抽出すること、
生体信号分類器を用いて前記特徴の各々から前記人を独立にCADまたは正常に分類する動作であって、前記分類は教師あり機械学習技術を用いて行われること、
前記生体信号分類器の出力を融合すること、ならびに
事前に定められた基準に基づき前記生体信号分類器の前記融合された出力を用いて前記人の冠動脈疾患の存在を検出すること、
を含む動作を行う1つまたは複数の命令を含む非一時的機械可読情報記憶媒体。
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US (1) | US11083416B2 (ja) |
EP (1) | EP3363351B1 (ja) |
JP (1) | JP6909741B2 (ja) |
CN (1) | CN108523869B (ja) |
AU (2) | AU2018201007A1 (ja) |
SG (1) | SG10201801189QA (ja) |
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JP2021536287A (ja) * | 2018-09-07 | 2021-12-27 | ヴァイタル コネクト, インコーポレイテッドVital Connect, Inc. | 構造的心疾患のスクリーニングデバイス、方法、およびシステム |
CN114764575A (zh) * | 2022-04-11 | 2022-07-19 | 山东省人工智能研究院 | 基于深度学习和时序注意力机制的多模态数据分类方法 |
KR20230059834A (ko) | 2020-10-02 | 2023-05-03 | 코니카 미놀타 가부시키가이샤 | 생체 상태 진단 시스템 |
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JP6909741B2 (ja) | 2021-07-28 |
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EP3363351B1 (en) | 2023-08-16 |
CN108523869B (zh) | 2024-04-09 |
AU2020201313A1 (en) | 2020-03-12 |
US20180228444A1 (en) | 2018-08-16 |
US11083416B2 (en) | 2021-08-10 |
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