JPS6434345A - Method for correcting phase of image of nuclear magnetic resonance tomographic imaging apparatus - Google Patents

Method for correcting phase of image of nuclear magnetic resonance tomographic imaging apparatus

Info

Publication number
JPS6434345A
JPS6434345A JP62192386A JP19238687A JPS6434345A JP S6434345 A JPS6434345 A JP S6434345A JP 62192386 A JP62192386 A JP 62192386A JP 19238687 A JP19238687 A JP 19238687A JP S6434345 A JPS6434345 A JP S6434345A
Authority
JP
Japan
Prior art keywords
phase
region
image
correction value
basis
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.)
Granted
Application number
JP62192386A
Other languages
Japanese (ja)
Other versions
JPH0377738B2 (en
Inventor
Kazuya Hoshino
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.)
GE Healthcare Japan Corp
Original Assignee
Yokogawa Medical Systems 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
Application filed by Yokogawa Medical Systems Ltd filed Critical Yokogawa Medical Systems Ltd
Priority to JP62192386A priority Critical patent/JPS6434345A/en
Priority to PCT/JP1988/000770 priority patent/WO1989000833A1/en
Publication of JPS6434345A publication Critical patent/JPS6434345A/en
Publication of JPH0377738B2 publication Critical patent/JPH0377738B2/ja
Granted 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

Abstract

PURPOSE:To correct the phase of an image by an IR method without almost increasing the scanning time, by performing the correction of phase measuring data and calculating an accurate correction value on the basis of the phase correction value. CONSTITUTION:An SE signal generated by resonance is received by a magnet assembly 1 and inputted to a computer 7 through a preamplifier 5, a phase detector 10 and an A/D converter 11. The computer 7 measures the phase of the arbitrary small region in a region to be imaged to sample phase measuring data and a vicinal small region is corrected on the basis of said phase measuring data and, subsequently, a value bringing an imaginary part to zero to be set to a correction value vicinal region is performed on the basis of said correction value and a region is successively enlarged to perform the phase correction of an entire region. An image reconstituted NMR signal is displayed on a display apparatus 13.
JP62192386A 1987-07-31 1987-07-31 Method for correcting phase of image of nuclear magnetic resonance tomographic imaging apparatus Granted JPS6434345A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62192386A JPS6434345A (en) 1987-07-31 1987-07-31 Method for correcting phase of image of nuclear magnetic resonance tomographic imaging apparatus
PCT/JP1988/000770 WO1989000833A1 (en) 1987-07-31 1988-07-30 Method of controlling phase of image in an mri

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62192386A JPS6434345A (en) 1987-07-31 1987-07-31 Method for correcting phase of image of nuclear magnetic resonance tomographic imaging apparatus

Publications (2)

Publication Number Publication Date
JPS6434345A true JPS6434345A (en) 1989-02-03
JPH0377738B2 JPH0377738B2 (en) 1991-12-11

Family

ID=16290433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62192386A Granted JPS6434345A (en) 1987-07-31 1987-07-31 Method for correcting phase of image of nuclear magnetic resonance tomographic imaging apparatus

Country Status (2)

Country Link
JP (1) JPS6434345A (en)
WO (1) WO1989000833A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60263842A (en) * 1984-06-12 1985-12-27 Toshiba Corp Nuclear magnetic resonant instrument
JPS62275442A (en) * 1986-05-21 1987-11-30 三菱電機株式会社 Calculation of magnetic resonance image

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61161441A (en) * 1985-01-11 1986-07-22 Yokogawa Electric Corp Phase correction of nmr tomographic image pickup device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60263842A (en) * 1984-06-12 1985-12-27 Toshiba Corp Nuclear magnetic resonant instrument
JPS62275442A (en) * 1986-05-21 1987-11-30 三菱電機株式会社 Calculation of magnetic resonance image

Also Published As

Publication number Publication date
WO1989000833A1 (en) 1989-02-09
JPH0377738B2 (en) 1991-12-11

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