JP5302326B2 - Mr−pet周期運動ゲーティング及び補正 - Google Patents
Mr−pet周期運動ゲーティング及び補正 Download PDFInfo
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Description
Claims (14)
- 被検体内の関心領域をスキャンし、生理的サイクル中の該関心領域の画像データを生成するMRスキャナ;
前記生理的サイクルを複数のフレームに分割し、前記MR画像データを前記生理的サイクル内の対応するフレームに関連付け、且つ一連のMR画像を再構成して前記生理的サイクル中の前記関心領域の動きモデルを生成するプロセッサ;
前記生理的サイクルの前記複数のフレームにおいて前記関心領域からPETデータを収集するPETスキャナ;
前記動きモデルを使用して前記生理的サイクルの1つ以上の基準フレームにおけるPET画像を生成するPET再構成プロセッサ;及び
前記MRスキャナが前記関心領域をスキャンするときに前記被検体内の前記生理的サイクルを監視するモニタ装置(VSM);
を含み、
前記プロセッサは、前記動きモデルを分析して、前記周期的な生理的信号の各フレームにおいて検出された動きの量を決定し、MRスキャン中に発生した動きの量が最小のフレームを特定し、且つ特定されたフレーム中にデータを収集するように前記PETスキャナをゲーティングする、
撮像システム。 - 前記PETスキャナは、リストモードにて、ライン・オブ・レスポンスとして前記関心領域からデータを収集し、且つ各ライン・オブ・レスポンスに、それが収集されたフレームに従ってマークを付与する、請求項1に記載のシステム。
- 前記PETスキャナは飛行時間(TOF)スキャナである、請求項1に記載のシステム。
- 前記VSMは、前記被検体内の心臓サイクルを記述する周期的な生理的信号を監視する心電計、及び前記被検体内の呼吸サイクルを監視する呼吸モニタのうちの少なくとも一方を含む、請求項1に記載のシステム。
- 前記PET再構成プロセッサは、前記基準フレーム以外のフレームにおいて収集されたPETデータを前記動きモデルに従って調整し、且つ調整されたPETデータを、前記基準フレームに対応するPET画像に再構成する、請求項1に記載のシステム。
- 前記MRスキャナは、所定の点に対する前記関心領域の変位及び所定の軸に対する前記関心領域の回転のうちの少なくとも一方を指し示すために再構成されるMRデータを生成するナビゲータシーケンスを生成する、請求項5に記載のシステム。
- 前記動きモデルは前記関心領域の3Dモデルである、請求項5に記載のシステム。
- 被検体内の関心領域のMRデータを収集する段階;
前記MRデータを収集しながら、前記被検体の生理的サイクルを監視する段階;
収集されたMRデータを、前記生理的サイクルの複数のフレームの各々に関連付ける段階;
各フレームに対して、関心領域の動きを指し示す前記関心領域の動きモデルを生成する段階;
PETスキャン中にPETデータを収集しながら前記生理的サイクルを監視する段階;
前記PETデータの、前記生理的サイクルの選択フレームにおける動き補正されたPET画像への再構成において、前記動きモデルを用いる段階;及び
前記動きモデルを分析して、周期的な生理的信号の各フレームにおいて検出された動きの量を決定し、MRスキャン中に発生した動きの量が最小のフレームを特定し、且つ特定されたフレーム中にデータを収集するようにPETスキャナをゲーティングする段階;
を含むPET撮像方法。 - 前記基準フレーム以外のフレームにおいて収集されたPETデータを前記動きモデルに従って調整し、調整されたPETデータを、前記基準フレームに対応するPET画像に再構成する段階、を更に含む請求項8に記載の方法。
- 前記動きモデルが前記関心領域の最小の動きを示す1つ以上のフレームを特定し、特定された該1つ以上のフレームからのデータのみを用いるようにゲーティングする段階、を更に含む請求項8に記載の方法。
- 前記生理的サイクルは、前記被検体内の心臓サイクル及び呼吸サイクルのうちの一方を含む、請求項8に記載の方法。
- 収集されたPET画像データを、前記生理的サイクルの各フレームにおいて、前記生理的サイクルの同一フレーム内で収集されたMRデータから再構成されたMR画像と、前記基準フレーム内で収集されたMRデータから再構成されたMR画像と、の間での前記関心領域の相対的な動きに従って遡及的に調整する段階、を更に含む請求項8に記載の方法。
- 前記関心領域の前記PET画像を前記動きモデルの形状に従って変形する段階、を更に有する請求項8に記載の方法。
- 前記関心領域は心臓であり、心臓の動きを記述する心臓タグ付けシーケンスを使用する段階を更に含む請求項8に記載の方法。
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US98669907P | 2007-11-09 | 2007-11-09 | |
US60/986,699 | 2007-11-09 | ||
PCT/IB2008/054488 WO2009060348A1 (en) | 2007-11-09 | 2008-10-29 | Mr-pet cyclic motion gating and correction |
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JP5302326B2 true JP5302326B2 (ja) | 2013-10-02 |
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US (1) | US9535145B2 (ja) |
EP (1) | EP2210118B1 (ja) |
JP (1) | JP5302326B2 (ja) |
CN (1) | CN101855564B (ja) |
WO (1) | WO2009060348A1 (ja) |
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WO2008075265A1 (en) * | 2006-12-19 | 2008-06-26 | Koninklijke Philips Electronics N.V. | Motion correction in a pet/mri hybrid imaging system |
DE102007023657B4 (de) * | 2007-05-22 | 2014-03-20 | Siemens Aktiengesellschaft | Verfahren zur Datenaufnahme bei einer funktionellen Gehirnuntersuchung mit einem kombinierten Magnetresonanz-PET-Gerät |
EP2293248A1 (en) * | 2009-09-08 | 2011-03-09 | Koninklijke Philips Electronics N.V. | Motion monitoring system for monitoring motion within a region of interest |
US8653816B2 (en) * | 2009-11-04 | 2014-02-18 | International Business Machines Corporation | Physical motion information capturing of a subject during magnetic resonce imaging automatically motion corrected by the magnetic resonance system |
JP5364009B2 (ja) * | 2010-02-12 | 2013-12-11 | 富士フイルム株式会社 | 画像生成装置、画像生成方法、及びそのプログラム |
US9305377B2 (en) | 2011-01-05 | 2016-04-05 | Koninklijke Philips N.V. | Method and apparatus to detect and correct motion in list-mode PET data with a gated signal |
EP2503349A1 (en) | 2011-03-24 | 2012-09-26 | Koninklijke Philips Electronics N.V. | MR image reconstruction using prior information-constrained regularization |
CN102151142B (zh) * | 2011-04-14 | 2012-08-15 | 华中科技大学 | 一种正电子发射断层成像中的运动门控方法及系统 |
DE102011007871B4 (de) * | 2011-04-21 | 2017-07-27 | Siemens Healthcare Gmbh | Verfahren zur Erfassung von MR-Bilddaten sowie entsprechende kombinierte MR/ET-Einrichtung |
WO2012153262A1 (en) * | 2011-05-12 | 2012-11-15 | Koninklijke Philips Electronics N.V. | List mode dynamic image reconstruction |
US8569706B2 (en) * | 2011-06-03 | 2013-10-29 | General Electric Company | Method and system for processing gated image data |
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