JPWO2019167882A1 - 機械学習装置および方法 - Google Patents
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Abstract
Description
11 元学習データ入力部
12 元学習データ分割部
13 学習除外対象判別部
14 分割学習データ出力部
15 機械学習部
16 ニューラルネットワーク
Claims (11)
- 断層画像のボリュームデータと前記ボリュームデータにおける領域のラベリングとを含む学習データの入力を受け付ける学習データ入力部と、
前記学習データ入力部が入力を受け付けた学習データを分割することで、分割学習データを作成する分割部と、
前記分割部の作成した分割学習データと前記学習データとから、学習対象から除外する領域である学習除外対象領域を判別する学習除外対象領域判別部と、
前記分割部の作成した分割学習データに基づいて、前記学習除外対象領域判別部が判別した学習除外対象領域以外の領域のラベリングを機械学習する機械学習部と、
を備える機械学習装置。 - 前記学習除外対象領域判別部は、前記分割部の作成した分割学習データでラベリングされた領域の体積と前記学習データでラベリングされた領域の体積とを比較し、前記体積が閾値以下となるか否かに応じて学習除外対象領域を判別する請求項1に記載の機械学習装置。
- 前記学習除外対象領域判別部が判別した学習除外対象領域以外の検出精度を算出する検出精度算出部を備え、
前記機械学習部は、前記分割部の作成した分割学習データと前記検出精度算出部が算出した検出精度とに基づいて、前記学習除外対象領域以外の領域のラベリングを機械学習する請求項1または2に記載の機械学習装置。 - 前記検出精度算出部は、各領域の予測ラベルと正解ラベルとの間のIoU(Intersection over Union)の平均に基づいて検出精度を算出する請求項3に記載の機械学習装置。
- 前記分割部は、前記学習除外対象領域の全体が含まれるよう前記学習データを再分割する請求項1〜4のいずれか1項に記載の機械学習装置。
- 前記分割部は、互いに重なりを有する分割学習データを作成する請求項1〜5のいずれか1項に記載の機械学習装置。
- 前記断層画像は3次元医用断層画像であり、前記領域は臓器を含む請求項1〜6のいずれか1項に記載の機械学習装置。
- コンピュータが、
断層画像のボリュームデータと前記ボリュームデータにおける領域のラベリングとを含む学習データの入力を受け付けるステップと、
前記学習データを分割することで、分割学習データを作成するステップと、
前記分割学習データと前記学習データとから、学習対象から除外する領域である学習除外対象領域を判別するステップと、
前記分割学習データに基づいて、前記学習除外対象領域以外の領域のラベリングを機械学習するステップと、
を実行する機械学習方法。 - 請求項8に記載の機械学習方法をコンピュータに実行させるための機械学習プログラム。
- 請求項9に記載の機械学習プログラムによって機械学習された機械学習済みモデル。
- 非一時的かつコンピュータ読取可能な記録媒体であって、前記記録媒体に格納された指令がコンピュータによって読み取られた場合に請求項9に記載の機械学習プログラムをコンピュータに実行させる記録媒体。
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JP2006325629A (ja) * | 2005-05-23 | 2006-12-07 | Ge Medical Systems Global Technology Co Llc | 3次元関心領域設定方法,画像取得装置およびプログラム |
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JP2015530193A (ja) * | 2012-09-27 | 2015-10-15 | シーメンス プロダクト ライフサイクル マネージメント ソフトウェアー インコーポレイテッドSiemens Product Lifecycle Management Software Inc. | 3dコンピュータ断層撮影のための複数の骨のセグメンテーション |
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US9959486B2 (en) * | 2014-10-20 | 2018-05-01 | Siemens Healthcare Gmbh | Voxel-level machine learning with or without cloud-based support in medical imaging |
WO2017195797A1 (ja) | 2016-05-09 | 2017-11-16 | 東芝メディカルシステムズ株式会社 | 医用画像診断装置 |
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JP2004097535A (ja) * | 2002-09-10 | 2004-04-02 | Toshiba Corp | 医用3次元画像データの領域分割方法 |
JP2006325629A (ja) * | 2005-05-23 | 2006-12-07 | Ge Medical Systems Global Technology Co Llc | 3次元関心領域設定方法,画像取得装置およびプログラム |
JP2010119850A (ja) * | 2008-11-22 | 2010-06-03 | General Electric Co <Ge> | 統計モデルを用いた医療画像自動セグメンテーションシステム、装置並びにプロセッサ |
JP2013506478A (ja) * | 2009-09-30 | 2013-02-28 | インペリアル イノベ−ションズ リミテッド | 医用画像処理方法および装置 |
JP2015530193A (ja) * | 2012-09-27 | 2015-10-15 | シーメンス プロダクト ライフサイクル マネージメント ソフトウェアー インコーポレイテッドSiemens Product Lifecycle Management Software Inc. | 3dコンピュータ断層撮影のための複数の骨のセグメンテーション |
JP2018011958A (ja) * | 2016-07-21 | 2018-01-25 | 東芝メディカルシステムズ株式会社 | 医用画像処理装置及び医用画像処理プログラム |
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