JP2008307287A5 - - Google Patents

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JP2008307287A5
JP2008307287A5 JP2007159292A JP2007159292A JP2008307287A5 JP 2008307287 A5 JP2008307287 A5 JP 2008307287A5 JP 2007159292 A JP2007159292 A JP 2007159292A JP 2007159292 A JP2007159292 A JP 2007159292A JP 2008307287 A5 JP2008307287 A5 JP 2008307287A5
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magnetic resonance
resonance imaging
imaging apparatus
subject
fluctuation amount
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JP2007159292A
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JP2008307287A (en
JP5377838B2 (en
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静磁場発生手段と、傾斜磁場発生手段と、高周波磁場発生手段と、被検体から発生する核磁気共鳴信号を検出する信号検出手段と、検出された核磁気共鳴信号に対して演算処理を行いプロジェクションデータの作成並びに画像を再構成する画像再構成手段と、上記傾斜磁場発生手段、上記高周波磁場発生手段、上記信号検出手段及び上記画像再構成手段の動作を制御する制御手段とを備える磁気共鳴イメージング装置において、
上記制御手段は、
上記プロジェクションデータを用いて上記被検体の所定領域の脂肪の位置変動量を算出し、算出した脂肪位置変動量に基づいて、上記被検体の撮影動作を制御することを特徴とする磁気共鳴イメージング装置。 Static magnetic field generating means, gradient magnetic field generating means, high-frequency magnetic field generating means, signal detecting means for detecting nuclear magnetic resonance signals generated from the subject, and performing arithmetic processing on the detected nuclear magnetic resonance signals and performing projection Magnetic resonance imaging comprising: image reconstruction means for creating data and reconstructing an image; and control means for controlling operations of the gradient magnetic field generation means, the high-frequency magnetic field generation means, the signal detection means, and the image reconstruction means In the device
The control means includes
A magnetic resonance imaging apparatus that calculates a position fluctuation amount of fat in a predetermined region of the subject using the projection data and controls an imaging operation of the subject based on the calculated fat position fluctuation amount . 請求項１記載の磁気共鳴イメージング装置において、上記制御手段は、算出した脂肪位置変動量に従って、上記被検体の呼吸周期を検出するための部位を決定し、この決定した部位のプロジェクションデータにより検出した呼吸周期に基づいて、上記被検体の撮影動作を制御することを特徴とする磁気共鳴イメージング装置。   2. The magnetic resonance imaging apparatus according to claim 1, wherein the control means determines a part for detecting the respiratory cycle of the subject according to the calculated fat position fluctuation amount, and detects the projection data of the determined part. A magnetic resonance imaging apparatus for controlling an imaging operation of the subject based on a respiratory cycle. 請求項２記載の磁気共鳴イメージング装置において、上記制御手段は、上記決定した部位のプロジェクションデータにより検出した呼吸周期に従って、再構成画像に適用する空間フィルタを変更することを特徴とする磁気共鳴イメージング装置。   3. The magnetic resonance imaging apparatus according to claim 2, wherein the control unit changes a spatial filter applied to the reconstructed image in accordance with a respiratory cycle detected by the projection data of the determined part. . 請求項３記載の磁気共鳴イメージング装置において、上記制御手段は、上記被検体の所定領域の脂肪位置変動量が所定範囲内か否かを判断し、脂肪位置変動量が所定範囲内となった計測回数に従って上記空間フィルタが除去する信号を変更することを特徴とする磁気共鳴イメージング装置。   4. The magnetic resonance imaging apparatus according to claim 3, wherein the control means determines whether or not the fat position fluctuation amount of the predetermined region of the subject is within a predetermined range, and the fat position fluctuation amount is within the predetermined range. A magnetic resonance imaging apparatus, wherein the signal removed by the spatial filter is changed according to the number of times. 請求項２記載の磁気共鳴イメージング装置において、上記信号検出手段は、複数の受信コイルを有し、上記制御手段は、上記検出した呼吸周期に従って、複数の受信コイルのうちのいずれかを選択し、選択した受信コイルにより受信された信号により、画像を再構成させること特徴とする磁気共鳴イメージング装置。   3. The magnetic resonance imaging apparatus according to claim 2, wherein the signal detection unit includes a plurality of reception coils, and the control unit selects one of the plurality of reception coils according to the detected respiratory cycle, A magnetic resonance imaging apparatus, wherein an image is reconstructed by a signal received by a selected receiving coil. 請求項５記載の磁気共鳴イメージング装置において、上記制御手段は、上記被検体の所定領域の脂肪位置変動量が所定範囲内か否かを判断し、脂肪位置変動量が所定範囲内となった計測回数に従って、上記複数の受信コイルのうちのいずれを選択して、選択した受信コイルにより受信された信号により、画像を再構成させることを特徴とする磁気共鳴イメージング装置。   6. The magnetic resonance imaging apparatus according to claim 5, wherein the control unit determines whether or not the fat position fluctuation amount of the predetermined region of the subject is within a predetermined range, and the fat position fluctuation amount is within the predetermined range. A magnetic resonance imaging apparatus, wherein any one of the plurality of receiving coils is selected according to the number of times, and an image is reconstructed by a signal received by the selected receiving coil. 請求項２記載の磁気共鳴イメージング装置において、表示手段を備え、上記制御部は、被検体の呼吸周期を検出するための部位を決定するために、被検体の所定領域の脂肪を示す画像を上記表示手段に表示させることを特徴とする磁気共鳴イメージング装置。 3. The magnetic resonance imaging apparatus according to claim 2, further comprising display means, wherein the control unit displays an image showing fat in a predetermined region of the subject in order to determine a site for detecting the respiratory cycle of the subject. A magnetic resonance imaging apparatus characterized by displaying on a display means.
JP2007159292A 2007-06-15 2007-06-15 Magnetic resonance imaging system Expired - Fee Related JP5377838B2 (en)

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JP2007159292A JP5377838B2 (en) 2007-06-15 2007-06-15 Magnetic resonance imaging system

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Application Number Priority Date Filing Date Title
JP2007159292A JP5377838B2 (en) 2007-06-15 2007-06-15 Magnetic resonance imaging system

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JP2008307287A JP2008307287A (en) 2008-12-25
JP2008307287A5 true JP2008307287A5 (en) 2010-07-22
JP5377838B2 JP5377838B2 (en) 2013-12-25

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JP5305925B2 (en) * 2009-01-05 2013-10-02 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Magnetic resonance imaging system
WO2012137431A1 (en) * 2011-04-05 2012-10-11 パナソニック株式会社 Ultrasound diagnostic apparatus and method for outputting ultrasound diagnostic images
US9523753B2 (en) * 2011-04-21 2016-12-20 Koninklijke Philips N.V. Simultaneous non-contrast MR angiography and intraplaque hemorrhage (SNAP) MR imaging
JP5766070B2 (en) * 2011-08-31 2015-08-19 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Image data processing apparatus, magnetic resonance apparatus, image data processing method, and program
JP5972698B2 (en) * 2012-07-23 2016-08-17 東芝メディカルシステムズ株式会社 Magnetic resonance imaging device
JP6560493B2 (en) * 2014-12-25 2019-08-14 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Magnetic resonance apparatus and program

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US4994743A (en) * 1989-10-27 1991-02-19 General Electric Company Method for monitoring respiration with acquired NMR data
US5323110A (en) * 1992-08-10 1994-06-21 Hitachi Instruments, Inc. Technique for compensating for patient motion in magnetic resonance imaging
JP4250251B2 (en) * 1999-04-13 2009-04-08 株式会社日立メディコ Magnetic resonance imaging system
JP3993799B2 (en) * 2002-07-24 2007-10-17 株式会社日立メディコ Magnetic resonance imaging system
US8126237B2 (en) * 2004-11-12 2012-02-28 Kabushiki Kaisha Toshiba Magnetic resonance imaging and correcting device
JP4711732B2 (en) * 2005-05-12 2011-06-29 株式会社日立メディコ Magnetic resonance imaging device
JP2006320527A (en) * 2005-05-19 2006-11-30 Hitachi Medical Corp Magnetic resonance imaging system

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