JPS6468247A - Magnetic resonance apparatus - Google Patents

Magnetic resonance apparatus

Info

Publication number
JPS6468247A
JPS6468247A JP62225918A JP22591887A JPS6468247A JP S6468247 A JPS6468247 A JP S6468247A JP 62225918 A JP62225918 A JP 62225918A JP 22591887 A JP22591887 A JP 22591887A JP S6468247 A JPS6468247 A JP S6468247A
Authority
JP
Japan
Prior art keywords
impedance matching
impedance
control circuit
high frequency
fine adjustment
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.)
Pending
Application number
JP62225918A
Other languages
Japanese (ja)
Inventor
Kiyoshi Yoda
Satoru Fujimura
Hidenobu Itagaki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62225918A priority Critical patent/JPS6468247A/en
Publication of JPS6468247A publication Critical patent/JPS6468247A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

PURPOSE:To shorten the time required in impedance matching, by automatically determining an initial value optimum in the impedance matching state of a high frequency coil according to an object to be measured before performing fine adjustment in the vicinity of said initial value. CONSTITUTION:The impedance matching conditions of high frequency coils 5, 6 different according to an object to be measured are preliminarily stored into the memory within a computer 3 as a plurality of initial values. At first, the variable condensers of impedance matching devices 11, 12 are controlled to the capacity values according to initial setting conditions by an impedance control circuit 13. Continuously, the fine adjustment of the impedance matching devices 11, 12 is performed by an impedance detector 14 and the impedance control circuit 13.
JP62225918A 1987-09-09 1987-09-09 Magnetic resonance apparatus Pending JPS6468247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62225918A JPS6468247A (en) 1987-09-09 1987-09-09 Magnetic resonance apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62225918A JPS6468247A (en) 1987-09-09 1987-09-09 Magnetic resonance apparatus

Publications (1)

Publication Number Publication Date
JPS6468247A true JPS6468247A (en) 1989-03-14

Family

ID=16836925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62225918A Pending JPS6468247A (en) 1987-09-09 1987-09-09 Magnetic resonance apparatus

Country Status (1)

Country Link
JP (1) JPS6468247A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0637131A1 (en) * 1993-07-29 1995-02-01 Nec Corporation Microwave amplifier having a variable-impedance impedance matching circuit
JP2002034953A (en) * 2000-06-29 2002-02-05 Siemens Ag Method of operating magnetic resonance imaging apparatus
JP2013505044A (en) * 2009-09-17 2013-02-14 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Multi-element RF transmitter coil for MRI with local automatic adjustment and matching circuit
JP2014525336A (en) * 2011-09-07 2014-09-29 コーニンクレッカ フィリップス エヌ ヴェ Magnetic resonance system and noise figure reduction method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0637131A1 (en) * 1993-07-29 1995-02-01 Nec Corporation Microwave amplifier having a variable-impedance impedance matching circuit
JP2002034953A (en) * 2000-06-29 2002-02-05 Siemens Ag Method of operating magnetic resonance imaging apparatus
JP2013505044A (en) * 2009-09-17 2013-02-14 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Multi-element RF transmitter coil for MRI with local automatic adjustment and matching circuit
JP2014525336A (en) * 2011-09-07 2014-09-29 コーニンクレッカ フィリップス エヌ ヴェ Magnetic resonance system and noise figure reduction method

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