JP2013183967A5 - - Google Patents

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JP2013183967A5
JP2013183967A5 JP2012052777A JP2012052777A JP2013183967A5 JP 2013183967 A5 JP2013183967 A5 JP 2013183967A5 JP 2012052777 A JP2012052777 A JP 2012052777A JP 2012052777 A JP2012052777 A JP 2012052777A JP 2013183967 A5 JP2013183967 A5 JP 2013183967A5
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magnetic field
image
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coil
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JP5959888B2 (en
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MRI装置で画像を得る場合、エコー時間(TE)や繰り返し時間(TR)等のパラメータを変化させたり、画像演算を行ったりすることによって、様々な組織コントラストを持つ画像を得ることができる。臨床においては、脂肪組織からの信号を抑制した画像が求められることが多々ある。脂肪組織からの信号を抑制した画像を得る方法の一例として、TEの異なる画像を複数枚取得し、演算により水・脂肪分離画像を得る方法があげられる。その代表的な方法としては、Dixon法と呼ばれるものがある(非特許文献1参照)。
When obtaining an image in an MRI apparatus, or to change the parameters such as echo time (TE) and repetition time (TR), by or performing image computation, it is possible to obtain an image having various tissue contrast. In clinical practice, an image in which signals from adipose tissue are suppressed is often required. As an example of a method for obtaining an image in which a signal from adipose tissue is suppressed, there is a method for obtaining a plurality of images having different TEs and obtaining a water / fat separated image by calculation. A typical method is called a Dixon method (see Non-Patent Document 1).

最初に本発明のMRI装置の一例の構成に関して説明する。図1はMRI装置の一構成例の概略図である。このMRI装置は、被検体101の周囲に静磁場を発生させる静磁場発生用磁石102と、傾斜磁場を発生させる傾斜磁場コイル103と被検体に高周波磁場パルスを照射する照射コイル104、被検体からのNMR信号を検出する受信コイル105と被検体101が横たわるベッド106を備えている。
First, the configuration of an example of the MRI apparatus of the present invention will be described. FIG. 1 is a schematic diagram of a configuration example of an MRI apparatus. This MRI apparatus includes a static magnetic field generating magnet 102 for generating a static magnetic field around the subject 101, a gradient magnetic field coil 103 for generating a gradient magnetic field , an irradiation coil 104 for irradiating the subject with a high-frequency magnetic field pulse, and a subject. A receiving coil 105 for detecting the NMR signal and a bed 106 on which the subject 101 lies.

101 被検体、102 静磁場発生用磁石、103 傾斜磁場コイル、104 照射コイル、105 受信コイル、106 天板、107 傾斜磁場電源、108 RF送信部、109 信号検出部、110 信号処理部、111 表示部、112 制御部
101 Subject, 102 Magnet for generating static magnetic field, 103 Gradient magnetic field coil, 104 Irradiation coil, 105 Receiver coil, 106 Top plate, 107 Gradient magnetic field power supply, 108 RF transmitter, 109 Signal detector, 110 Signal processor, 111 Display Part, 112 Control part

JP2012052777A 2012-03-09 2012-03-09 Magnetic resonance imaging apparatus and phase correction method Active JP5959888B2 (en)

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JP2012052777A JP5959888B2 (en) 2012-03-09 2012-03-09 Magnetic resonance imaging apparatus and phase correction method

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JP2012052777A JP5959888B2 (en) 2012-03-09 2012-03-09 Magnetic resonance imaging apparatus and phase correction method

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JP2013183967A JP2013183967A (en) 2013-09-19
JP2013183967A5 true JP2013183967A5 (en) 2015-04-09
JP5959888B2 JP5959888B2 (en) 2016-08-02

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Publication number Priority date Publication date Assignee Title
JP5979327B2 (en) 2016-01-04 2016-08-24 株式会社日立製作所 Magnetic resonance imaging apparatus, operating method thereof, and time-series image creation program
CN115830154B (en) * 2023-02-22 2023-05-02 南京信息工程大学 Unwrapping method based on double-angle phase encoding

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH024332A (en) * 1988-06-20 1990-01-09 Yokogawa Medical Syst Ltd Phase coefficient calculating method in mri
JPH0241137A (en) * 1988-07-29 1990-02-09 Yokogawa Medical Syst Ltd Phase correction in chemical shift imaging
DE10122874B4 (en) * 2001-05-11 2004-09-23 Siemens Ag Process for extracting spin collectives with different chemical shifts from phase-coded individual images, taking into account field inhomogeneities, and device therefor

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