DE3685259D1 - Verfahren zur bilderzeugung mittels magnetischer resonanz. - Google Patents

Verfahren zur bilderzeugung mittels magnetischer resonanz.

Info

Publication number
DE3685259D1
DE3685259D1 DE8686107549T DE3685259T DE3685259D1 DE 3685259 D1 DE3685259 D1 DE 3685259D1 DE 8686107549 T DE8686107549 T DE 8686107549T DE 3685259 T DE3685259 T DE 3685259T DE 3685259 D1 DE3685259 D1 DE 3685259D1
Authority
DE
Germany
Prior art keywords
magnetic resonance
generating images
images
generating
resonance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE8686107549T
Other languages
English (en)
Inventor
Koichi Sano
Tetsuro Yokohama
Hideaki Koizumi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Healthcare Manufacturing Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP60122422A external-priority patent/JPH0636790B2/ja
Priority claimed from JP60158199A external-priority patent/JPS6219744A/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3685259D1 publication Critical patent/DE3685259D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
    • G01R33/56518—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to eddy currents, e.g. caused by switching of the gradient magnetic field
    • 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
    • G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
    • G01R33/56563—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the main magnetic field B0, e.g. temporal variation of the magnitude or spatial inhomogeneity of B0

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE8686107549T 1985-06-07 1986-06-03 Verfahren zur bilderzeugung mittels magnetischer resonanz. Expired - Lifetime DE3685259D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60122422A JPH0636790B2 (ja) 1985-06-07 1985-06-07 核磁気共鳴イメ−ジング静磁場分布測定方式
JP60158199A JPS6219744A (ja) 1985-07-19 1985-07-19 核磁気共鳴イメ−ジング方式

Publications (1)

Publication Number Publication Date
DE3685259D1 true DE3685259D1 (de) 1992-06-17

Family

ID=26459547

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686107549T Expired - Lifetime DE3685259D1 (de) 1985-06-07 1986-06-03 Verfahren zur bilderzeugung mittels magnetischer resonanz.

Country Status (3)

Country Link
US (1) US4724388A (de)
EP (1) EP0204320B1 (de)
DE (1) DE3685259D1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3614142C2 (de) * 1985-04-26 1996-03-28 Toshiba Kawasaki Kk Verwendung eines Materials für die Diagnose durch Kernresonanz-Spektroskopie
GB8615674D0 (en) * 1986-06-26 1986-07-30 Mansfield P Electrical coils
GB8615854D0 (en) * 1986-06-28 1986-08-06 Turner R Magnetic field coils
JPS6321048A (ja) * 1986-07-16 1988-01-28 横河メディカルシステム株式会社 核磁気共鳴画像の歪み補正方法
NL8602019A (nl) * 1986-08-07 1988-03-01 Philips Nv Magnetische resonantiewerkwijze en -inrichting voor het elimineren van fasefouten in beeldelementen van een complexe afbeelding van een kernmagnetisatieverdeling.
JPH0814584B2 (ja) * 1986-12-22 1996-02-14 株式会社東芝 磁気共鳴イメ−ジング装置における流速測定方法
NL8701642A (nl) * 1987-07-13 1989-02-01 Philips Nv Werkwijze en inrichting voor het uitvoeren van een fasecorrectie bij mr angiografie.
JP2642362B2 (ja) * 1987-09-30 1997-08-20 株式会社東芝 磁気共鳴映像装置
JP2598038B2 (ja) * 1987-09-30 1997-04-09 株式会社東芝 磁気共鳴映像装置
US4837513A (en) * 1988-04-14 1989-06-06 The Regents Of The University Of California MRI using asymmetric RF nutation pulses and asymmetric synthesis of complex conjugated SE data to reduce TE and T2 decay NMR spin echo responses
JPH04364829A (ja) * 1990-02-15 1992-12-17 Toshiba Corp 磁気共鳴画像処理方法及び装置
JPH03292934A (ja) * 1990-04-09 1991-12-24 Hitachi Medical Corp 核磁気共鳴を用いた検査方法
DE69326202T2 (de) * 1992-06-29 2000-04-13 Koninklijke Philips Electronics N.V., Eindhoven Verfahren und Gerät zur Kernresonanzabbildung
EP0577188B1 (de) * 1992-06-29 1999-09-01 Koninklijke Philips Electronics N.V. Verfahren und Gerät zur Kernresonanzabbildung
RU186685U1 (ru) * 2018-08-27 2019-01-29 Федеральное государственное бюджетное учреждение науки "Федеральный исследовательский центр "Казанский научный центр Российской академии наук" Датчик для измерения объемного распределения магнитного поля

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824452A (en) * 1971-04-08 1974-07-16 Varian Associates Fourier transform nuclear magnetic resonance spectrometer employing means for generating random pulse intervals to avoid anomalies due to net transverse magnetization
US3968424A (en) * 1974-08-01 1976-07-06 Varian Associates Fourier transform NMR spectroscopy employing a phase modulated rf carrier
JPS5938636A (ja) * 1982-08-28 1984-03-02 Toshiba Corp 核磁気共鳴装置
JPS59148854A (ja) * 1983-02-14 1984-08-25 Hitachi Ltd 核磁気共鳴を用いた検査装置
FI833807A (fi) * 1983-06-23 1984-12-24 Instrumentarium Oy Foerfarande foer utredning av aemnets eller magnetfaeltets egenskaper.
US4591789A (en) * 1983-12-23 1986-05-27 General Electric Company Method for correcting image distortion due to gradient nonuniformity

Also Published As

Publication number Publication date
EP0204320B1 (de) 1992-05-13
EP0204320A2 (de) 1986-12-10
US4724388A (en) 1988-02-09
EP0204320A3 (en) 1989-07-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HITACHI MEDICAL CORP., TOKIO/TOKYO, JP

8328 Change in the person/name/address of the agent

Free format text: BARDEHLE, H., DIPL.-ING. DOST, W., DIPL.-CHEM. DR.RER.NAT. ALTENBURG, U., DIPL.-PHYS., PAT.-ANWAELTE GEISSLER, B., DIPL.-PHYS.DR.JUR., PAT.- U. RECHTSANW. ROST, J., DIPL.-ING. DOSTERSCHILL, P., DIPL.-ING.DIPL.-WIRTSCH.-ING.DR.RER.POL., 81679 MUENCHEN KAHLHOEFER, H., DIPL.-PHYS., PAT.-ANWAELTE, 40474 DUESSELDORF PAGENBERG, J., DR.JUR. FROHWITTER, B., DIPL.-ING., RECHTSANWAELTE, 81679 MUENCHEN

8339 Ceased/non-payment of the annual fee