JP6199148B2 - 磁気共鳴装置による撮像方法および磁気共鳴装置 - Google Patents
磁気共鳴装置による撮像方法および磁気共鳴装置 Download PDFInfo
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- JP6199148B2 JP6199148B2 JP2013208471A JP2013208471A JP6199148B2 JP 6199148 B2 JP6199148 B2 JP 6199148B2 JP 2013208471 A JP2013208471 A JP 2013208471A JP 2013208471 A JP2013208471 A JP 2013208471A JP 6199148 B2 JP6199148 B2 JP 6199148B2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/4828—Resolving the MR signals of different chemical species, e.g. water-fat imaging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/4816—NMR imaging of samples with ultrashort relaxation times such as solid samples, e.g. MRI using ultrashort TE [UTE], single point imaging, constant time imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/5602—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by filtering or weighting based on different relaxation times within the sample, e.g. T1 weighting using an inversion pulse
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/4818—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space
- G01R33/4824—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a non-Cartesian trajectory
Description
2 読み出し時間
3 プリパルス
4 測定時間
5 時点
6 曲線
7 曲線
8 曲線
9 時点
10 時点
11 磁気共鳴装置
12 静磁場ユニット
13 患者撮像部
14 制御装置
15 操作ユニット
16 入力装置
17 表示装置
A 第1の測定区分
B 第2の測定区分
B1 部分測定区分
B2 部分測定区分
Gx x方向傾斜磁場
Gy y方向傾斜磁場
Gz z方向傾斜磁場
Claims (6)
- 磁気共鳴シーケンスを用いた磁気共鳴装置による撮像方法であって、
k空間の中心を含まないk空間の第1領域が、k空間の中心から出発する複数のスポークに沿って半径方向に走査されることによって、撮像部位に相当するk空間が走査され、少なくとも2つの位相エンコード傾斜磁場が励起パルス(1)の印加前に既に完全に立ち上げられ、第1領域なしの残りのk空間の第2の中心領域が、デカルト走査により走査され、コントラスト増強のために、それぞれ規定個数の個別測定の前に1つのプリパルス(3)が印加される磁気共鳴装置による撮像方法において、
k空間の第2領域の測定点のうち、k空間中心の直ぐ近傍に位置する少なくとも1つの部分が、中心測定点として、プリパルス(3)の最初の印加後に、撮像時に区別されるべき少なくとも2つの物質のうちの1つの物質のコントラスト用の磁化の零通過後に測定されることを特徴とする磁気共鳴装置による撮像方法。 - 中心測定点の測定が、プリパルスの印加後に、撮像時に区別されるべき少なくとも2つの物質のうちの1つの物質のT1をln(2)倍してなる開始時間(10)後に開始されることを特徴とする請求項1記載の方法。
- 先ずk空間の中心に相当する中心測定点が測定されることを特徴とする請求項1又は2記載の方法。
- k空間の中心の直ぐ近傍に位置するn3個(n=2,3,4又は5)の点が中心測定点として測定されることを特徴とする請求項1乃至3の1つに記載の方法。
- 中心測定点が、k空間内のスパイラル状の測定軌道に沿って、k空間の中心の直ぐ近傍に位置する中心測定点から出発して測定されることを特徴とする請求項1乃至4の1つに記載の方法。
- 請求項1乃至5の1つに記載の方法を実施するように構成された制御装置(14)を含む磁気共鳴装置(11)。
Applications Claiming Priority (2)
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DE201210218422 DE102012218422B3 (de) | 2012-10-10 | 2012-10-10 | Schnelle MR-Bildaufnahme mit erhöhtem Kontrast |
DE102012218422.8 | 2012-10-10 |
Publications (3)
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JP2014076359A JP2014076359A (ja) | 2014-05-01 |
JP2014076359A5 JP2014076359A5 (ja) | 2016-10-06 |
JP6199148B2 true JP6199148B2 (ja) | 2017-09-20 |
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JP2013208471A Active JP6199148B2 (ja) | 2012-10-10 | 2013-10-03 | 磁気共鳴装置による撮像方法および磁気共鳴装置 |
Country Status (5)
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US (1) | US9395429B2 (ja) |
JP (1) | JP6199148B2 (ja) |
KR (1) | KR101625718B1 (ja) |
CN (1) | CN103728580B (ja) |
DE (1) | DE102012218422B3 (ja) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102011083871B4 (de) * | 2011-09-30 | 2013-06-13 | Siemens Aktiengesellschaft | Anpassung der Grundfrequenz eines HF-Anregungspulses bei der nicht-selektiven Anregung von Kernspinsignalen in einem Untersuchungsobjekt |
DE102011086369B4 (de) * | 2011-11-15 | 2022-08-11 | Siemens Healthcare Gmbh | Verfahren zur Erstellung von MR-Angiographiebildern und entsprechende Magnetresonanzanlage |
DE102012218424B3 (de) * | 2012-10-10 | 2014-03-20 | Siemens Aktiengesellschaft | Schnelle MR-Bildaufnahme mit optimiertem Signal-Rausch-Verhältnis und/oder Kontrast |
DE102012218422B3 (de) * | 2012-10-10 | 2014-02-27 | Siemens Aktiengesellschaft | Schnelle MR-Bildaufnahme mit erhöhtem Kontrast |
US10670684B2 (en) * | 2016-01-06 | 2020-06-02 | Siemens Healthcare Gmbh | Free-breathing non-contrast MR angiography |
US10488484B2 (en) * | 2016-01-28 | 2019-11-26 | Canon Medical Systems Corporation | Magnetic resonance imaging method |
KR20180067442A (ko) * | 2016-12-12 | 2018-06-20 | 지멘스 헬스케어 게엠베하 | 가속형 자기 공명 촬영 |
JP6831755B2 (ja) * | 2017-06-14 | 2021-02-17 | 株式会社日立製作所 | 磁気共鳴イメージング装置及び磁気共鳴イメージング装置の制御方法 |
EP3470868A1 (en) * | 2017-10-16 | 2019-04-17 | Koninklijke Philips N.V. | Quantitative measurement of relaxation times in magnetic resonance imaging |
DE102017222359B4 (de) | 2017-12-11 | 2021-01-28 | Siemens Healthcare Gmbh | Automatische Bestimmung von Korrekturfaktoren für eine Magnetresonanzanlage |
DE102018205075A1 (de) * | 2018-04-04 | 2019-10-10 | Siemens Healthcare Gmbh | Messsignalgewinnung bei spinechobasierter Bildgebung |
WO2020031110A1 (en) * | 2018-08-07 | 2020-02-13 | Indian Institute Of Science | A data acquisition system and a method of acquiring data for reconstruction of mri images |
CN109620228B (zh) * | 2018-12-20 | 2023-01-03 | 上海联影医疗科技股份有限公司 | 磁共振成像中脂肪零点偏差校正方法及磁共振成像方法 |
CN112946546B (zh) * | 2019-12-10 | 2023-10-27 | 西门子(深圳)磁共振有限公司 | 短t2组织的成像方法、系统及磁共振成像系统 |
CN111157932B (zh) * | 2020-01-02 | 2022-08-30 | 华东师范大学 | 一种快速自旋回波脉冲序列中射频脉冲的优化方法 |
CN111257809B (zh) * | 2020-01-23 | 2022-05-17 | 上海东软医疗科技有限公司 | 磁共振成像方法、装置、存储介质及医疗设备 |
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DE60132687T2 (de) * | 2000-03-27 | 2009-01-29 | Koninklijke Philips Electronics N.V. | Kernspin-verfahren zur bilderzeugung eines zeitabhängigen kontrastes |
DE10063676B4 (de) | 2000-12-20 | 2006-08-17 | Siemens Ag | Multiecho-Bildgebungsverfahren |
DE10337932B4 (de) * | 2003-08-18 | 2009-02-05 | Siemens Ag | Gerät und Verfahren zur Minimierung von Streifenartefakten bei radialer oder spiralförmiger k-Raum-Abtastung in der Magnetresonanzbildgebung |
DE102004022061A1 (de) * | 2004-05-05 | 2005-12-08 | Siemens Ag | Verfahren zur verbesserten interventionallen Bildgebung in der Magnet-Resonanz-Tomographie |
US7622922B2 (en) * | 2005-02-11 | 2009-11-24 | Koninklijke Philips Electronics N.V. | Magnetic resonance imaging with short echo times |
US8207734B2 (en) * | 2007-03-09 | 2012-06-26 | Hitachi Medical Corporation | Parallel imaging in non-cartesian magnetic resonance imaging (MRI) and MRI apparatus realizing the same |
US8022700B2 (en) * | 2008-11-07 | 2011-09-20 | General Electric Company | Method and apparatus for view ordering of magnetic resonance imaging data for dynamic studies |
US9341691B2 (en) * | 2008-11-12 | 2016-05-17 | Regents Of The University Of Minnesota | Short TE 3D radial sampling sequence for MRI |
DE102010010196B4 (de) * | 2010-03-04 | 2013-01-03 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Erstellung eines MR-Bilddatensatzes mit ultrakurzer Echozeit, Computerprogrammprodukt und Datenträger |
DE102010041446B4 (de) * | 2010-09-27 | 2013-05-23 | Siemens Aktiengesellschaft | Erstellung eines MR-Bilddatensatzes bei sehr kurzen Echozeiten TE |
DE102010041801B4 (de) * | 2010-09-30 | 2012-09-20 | Siemens Aktiengesellschaft | MR-Einzelpunkt-Bildgebung mit verkürzter Echozeit |
DE102012218422B3 (de) * | 2012-10-10 | 2014-02-27 | Siemens Aktiengesellschaft | Schnelle MR-Bildaufnahme mit erhöhtem Kontrast |
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JP2014076359A (ja) | 2014-05-01 |
US9395429B2 (en) | 2016-07-19 |
CN103728580B (zh) | 2017-08-18 |
DE102012218422B3 (de) | 2014-02-27 |
KR20140046378A (ko) | 2014-04-18 |
US20140103928A1 (en) | 2014-04-17 |
KR101625718B1 (ko) | 2016-05-30 |
CN103728580A (zh) | 2014-04-16 |
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