JP6235564B2 - 陽電子放出断層撮影における散乱された同時発生を用いた減衰マップ - Google Patents
陽電子放出断層撮影における散乱された同時発生を用いた減衰マップ Download PDFInfo
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- 238000002600 positron emission tomography Methods 0.000 title claims description 28
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- G—PHYSICS
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- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
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Description
Claims (15)
- 真の同時発生イベントと散乱イベントを含んでいるイベントデータを生成する陽電子放出断層撮影(PET)スキャナであり、前記イベントデータは、応答系統(LOR)のそれぞれのエンドポイントとそれぞれのエンドポイントのエネルギを含む、陽電子放出断層撮影スキャナと、
一つまたはそれ以上のプロセッサであり、
前記真の同時発生イベントに基づいて、複数の活動マップと減衰マップのペアを生成し、かつ、
前記散乱イベントに基づいて、前記複数の活動と減衰マップのペアから一つの活動マップと一つの減衰マップを選択する、
ようにプログラムされているプロセッサと、
を含む、画像システム。 - 前記一つまたはそれ以上のプロセッサは、さらに、
前記活動と減衰マップのペアのそれぞれに基づいて、少なくとも前記散乱イベントの分布をシミュレーションし、かつ、
散乱イベントの前記シミュレーションされた分布と記録された散乱イベントから構成された散乱イベントの記録された分布との間の比較に基づいて、前記活動と減衰マップのペアを選択する、ようにプログラムされている、
請求項1に記載の画像システム。 - 前記一つまたはそれ以上のプロセッサは、さらに、
前記エンドポイントの位置に基づいて、散乱イベントの分布を減衰コンポーネントへと分割する、ようにプログラムされている、
請求項1または2に記載の画像システム。 - 前記一つまたはそれ以上のプロセッサは、さらに、
前記真の同時発生イベントと前記選択された減衰マップ、または、前記選択された活動マップ、のうち少なくとも一つに基づいて、画像を再構成する、ようにプログラムされている、
請求項1乃至3いずれか一項に記載の画像システム。 - 前記複数の活動マップと減衰マップのペアは、類似の分布である、
請求項1乃至4いずれか一項に記載の画像システム。 - 前記分割は、活動の点光源としてのボクセルを含んでいる、
請求項3に記載の画像システム。 - 前記散乱イベントの分布は、計算された偏向角度を含んでいる、
請求項2乃至6いずれか一項に記載の画像システム。 - 前記散乱イベントの分布は、偏向角度のオフセットの発生頻度を含んでいる、
請求項2乃至7いずれか一項に記載の画像システム。 - 散乱イベントは、190keVと509keVとの間のエネルギを含んでおり、応答系統(LOR)の偏向は、4.2°以上である、
請求項1乃至8いずれか一項に記載の画像システム。 - 真の同時発生イベントと散乱イベントを含んでいるイベントデータを受け取るステップであり、前記イベントデータは、応答系統(LOR)のそれぞれのエンドポイントとそれぞれのエンドポイントのエネルギを含む、ステップと、
前記真の同時発生イベントに基づいて、複数の活動マップと減衰マップのペアを生成するステップと、
前記散乱イベントに基づいて、前記複数の活動と減衰マップのペアから一つの活動マップと一つの減衰マップを選択するステップと、
を含む、画像表示の方法。 - 前記方法は、さらに、
前記活動と減衰マップのペアのそれぞれに基づいて、少なくとも前記散乱イベントの分布をシミュレーションするステップと、
散乱イベントの前記シミュレーションされた分布と記録された散乱イベントから構成された散乱イベントの記録された分布との間の比較に基づいて、前記活動と減衰マップのペアを選択するステップと、を含む、
請求項10に記載の方法。 - 前記方法は、さらに、
前記エンドポイントの位置に基づいて、散乱イベントの分布を減衰コンポーネントへと分割するステップと、を含む、
請求項10または11に記載の方法。 - 前記方法は、さらに、
前記真の同時発生イベントと前記選択された減衰マップに基づいて、画像を再構成するステップと、を含む、
請求項10乃至12いずれか一項に記載の方法。 - 散乱イベントの分布は、計算された偏向角度を含んでいる、
請求項10乃至13いずれか一項に記載の方法。 - 請求項10乃至14いずれか一項に記載の方法を実行するように、一つまたはそれ以上の電子データ処理デバイスをコントロールするソフトウェア、を運んでいる固定のコンピュータで読取り可能なストレージ媒体。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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US201261642730P | 2012-05-04 | 2012-05-04 | |
US61/642,730 | 2012-05-04 | ||
US201261661455P | 2012-06-19 | 2012-06-19 | |
US61/661,455 | 2012-06-19 | ||
PCT/IB2013/053181 WO2013164731A1 (en) | 2012-05-04 | 2013-04-23 | Attenuation map with scattered coincidences in positron emission tomography |
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JP2015519555A JP2015519555A (ja) | 2015-07-09 |
JP2015519555A5 JP2015519555A5 (ja) | 2017-06-22 |
JP6235564B2 true JP6235564B2 (ja) | 2017-11-22 |
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US (1) | US9734600B2 (ja) |
EP (1) | EP2844148B1 (ja) |
JP (1) | JP6235564B2 (ja) |
CN (1) | CN104271045B (ja) |
RU (1) | RU2014148796A (ja) |
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RU2620862C2 (ru) * | 2012-05-21 | 2017-05-30 | Конинклейке Филипс Н.В. | Быстрая оценка рассеяния при реконструкции посредством позитронно-эмиссионной томографии |
WO2014074666A1 (en) * | 2012-11-07 | 2014-05-15 | Massachusetts Institute Of Technology | Inter-detector scatter enhanced emission tomography |
US11058371B2 (en) * | 2013-10-30 | 2021-07-13 | The Board Of Trustees Of The Leland Stanford Junior University | Simultaneous attenuation and activity reconstruction for positron emission tomography |
CN107250844B (zh) | 2014-12-12 | 2020-06-09 | 爱丁堡大学董事会 | 用于处理正电子发射断层摄影数据的方法和装置 |
CN107635469B (zh) * | 2015-05-19 | 2021-04-20 | 皇家飞利浦有限公司 | 基于pet系统中的散射符合的衰减图的估计 |
WO2016197127A1 (en) * | 2015-06-04 | 2016-12-08 | Rensselaer Polytechnic Institute | Attenuation map reconstruction from tof pet data |
CN105193442B (zh) * | 2015-09-17 | 2018-12-25 | 沈阳东软医疗系统有限公司 | 一种pet扫描时间的确定方法和装置 |
JP6516019B2 (ja) * | 2015-11-19 | 2019-05-22 | 株式会社島津製作所 | 放射線断層撮影装置 |
US11354832B2 (en) * | 2017-05-01 | 2022-06-07 | Koninklijke Philips N.V. | Generation of accurate hybrid datasets for quantitative molecular imaging |
WO2018202878A1 (en) * | 2017-05-04 | 2018-11-08 | Koninklijke Philips N.V. | Positron emission tomography (pet) timing calibration using coincidences involving high-energy cascade gamma from prompt-gamma positron emitters |
JP6761610B2 (ja) * | 2017-05-29 | 2020-09-30 | 株式会社島津製作所 | 吸収係数画像推定方法、吸収係数画像推定プログラム並びにそれを搭載したポジトロンct装置 |
US10438378B2 (en) | 2017-08-25 | 2019-10-08 | Uih America, Inc. | System and method for determining an activity map and an attenuation map |
JP6932250B2 (ja) * | 2017-09-14 | 2021-09-08 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 陽電子放出断層撮影における狭いエネルギー窓カウントから再構成された放出画像推定を使用した散乱補正 |
CN111588399B (zh) * | 2020-05-27 | 2023-05-16 | 上海联影医疗科技股份有限公司 | 医学成像设备状态监控的方法、设备和计算机设备 |
WO2022015834A1 (en) * | 2020-07-14 | 2022-01-20 | Yale University | Ct-free attenuation correction for spect using deep learning with imaging and non-imaging information |
US20220130079A1 (en) * | 2020-10-23 | 2022-04-28 | Siemens Medical Solutions Usa, Inc. | Systems and methods for simultaneous attenuation correction, scatter correction, and de-noising of low-dose pet images with a neural network |
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US6310968B1 (en) * | 1998-11-24 | 2001-10-30 | Picker International, Inc. | Source-assisted attenuation correction for emission computed tomography |
JP4659962B2 (ja) * | 2000-10-04 | 2011-03-30 | 株式会社東芝 | 核医学診断装置 |
JP3925278B2 (ja) * | 2002-04-04 | 2007-06-06 | 株式会社島津製作所 | 核医学イメージング装置 |
US7414246B2 (en) * | 2006-01-03 | 2008-08-19 | Koninklijke Philips Electronics N.V. | Achieving accurate time-of-flight calibrations with a stationary coincidence point source |
RU2010123369A (ru) * | 2007-11-09 | 2011-12-20 | Конинклейке Филипс Электроникс Н.В. (Nl) | Устройство и способ создания карты ослаблений |
JP4836094B2 (ja) * | 2008-06-18 | 2011-12-14 | 株式会社日立製作所 | 核医学撮像装置およびその初期散乱位置判定方法 |
US8218848B2 (en) | 2008-07-23 | 2012-07-10 | Siemens Aktiengesellschaft | System and method for the generation of attenuation correction maps from MR images |
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US8620053B2 (en) | 2009-11-04 | 2013-12-31 | Siemens Medical Solutions Usa, Inc. | Completion of truncated attenuation maps using maximum likelihood estimation of attenuation and activity (MLAA) |
WO2014205423A1 (en) * | 2013-06-21 | 2014-12-24 | O.N.Diagnostics, LLC | Quantitative phantomless calibration of computed tomography scans |
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