JPH0394203U - - Google Patents

Info

Publication number
JPH0394203U
JPH0394203U JP1990001146U JP114690U JPH0394203U JP H0394203 U JPH0394203 U JP H0394203U JP 1990001146 U JP1990001146 U JP 1990001146U JP 114690 U JP114690 U JP 114690U JP H0394203 U JPH0394203 U JP H0394203U
Authority
JP
Japan
Prior art keywords
coil
dielectric
mri apparatus
receiving
interposed
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
JP1990001146U
Other languages
English (en)
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 filed Critical
Priority to JP1990001146U priority Critical patent/JPH0394203U/ja
Priority to DE69013319T priority patent/DE69013319T2/de
Priority to EP90125861A priority patent/EP0436967B1/en
Priority to US07/638,162 priority patent/US5191289A/en
Publication of JPH0394203U publication Critical patent/JPH0394203U/ja
Pending 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
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
    • G01R33/34076—Birdcage coils
    • 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
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
    • G01R33/34069—Saddle coils
    • 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
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/343—Constructional details, e.g. resonators, specially adapted to MR of slotted-tube or loop-gap type
    • 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
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/34007—Manufacture of RF coils, e.g. using printed circuit board technology; additional hardware for providing mechanical support to the RF coil assembly or to part thereof, e.g. a support for moving the coil assembly relative to the remainder of the MR system

Description

【図面の簡単な説明】
第１図ａは本考案の第１の実施例のＭＲＩ装置
用ＲＦコイルの外観斜視図、第１図ｂは第１図ａ
に示すＡ−Ａ断面図、第２図はこのＲＦコイルの
ボビンの外観斜視図、第３図はこのＲＦコイルの
誘電率を説明するための斜視図、第４図は第１図
ａに示す第１の実施例コイルの適用例を示すＭＲ
Ｉ装置の概略ブロツク図、第５図は本考案の第２
の実施例のＭＲＩ装置用ＲＦコイルの外観斜視図
、第６図は従来例のＲＦコイルの外観斜視図、第
７図はこのＲＦコイルの等価回路図、第８図はこ
のＲＦコイルの誘電率を説明するための斜視図で
ある。 １０，３０……ＭＲＩ装置用ＲＦコイル、１２
，３２……ボビン（誘電体）、１２ａ，３２ａ…
…開口部、１３……コンダクターバンド（コイル
導体）、１４……ガードリング（コイル導体）、
１５……離間部、１６……受容部、２０……ＭＲ
Ｉ装置、Ｐ……生体。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 複数のコイル導体と、このコイル導体同士
    が近接した離間部に介在された誘電体とにより受
    容部を形成し、この受容部内に配置された生体に
    対しＲＦ波を送受し得るＭＲＩ装置用ＲＦコイル
    において、前記離間部に介在された誘電体に開口
    部を設けて、誘電体損を小さくしたことを特徴と
    するＭＲＩ装置用ＲＦコイル。 (2) 前記受容部は、筒状に一体形成された誘電
    体と、この筒の内周面及び外周面に配置されたコ
    イル導体とにより形成された請求項１記載のＭＲ
    Ｉ装置用ＲＦコイル。 (3) 前記離間部に介在する誘電体以外の誘電体
    の部分にも開口部を設けた請求項２記載のＭＲＩ
    装置用ＲＦコイル。 (4) 前記コイル導体を帯状とし、このコイル導
    体のインダクタンスを小さくした請求項１，２又
    は３記載のＭＲＩ装置用ＲＦコイル。 (5) 外付コンデンサを付加した請求項１，２，
    ３又は４記載のＭＲＩ装置用ＲＦコイル。
JP1990001146U 1990-01-10 1990-01-10 Pending JPH0394203U (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1990001146U JPH0394203U (ja) 1990-01-10 1990-01-10
DE69013319T DE69013319T2 (de) 1990-01-10 1990-12-31 Hochfrequenzspule für ein Magnetresonanz-Abbildungsgerät.
EP90125861A EP0436967B1 (en) 1990-01-10 1990-12-31 RF-coil for MRI apparatus
US07/638,162 US5191289A (en) 1990-01-10 1991-01-04 Rf-coil for mri apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990001146U JPH0394203U (ja) 1990-01-10 1990-01-10

Publications (1)

Publication Number Publication Date
JPH0394203U true JPH0394203U (ja) 1991-09-26

Family

ID=11493300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990001146U Pending JPH0394203U (ja) 1990-01-10 1990-01-10

Country Status (4)

Country Link
US (1) US5191289A (ja)
EP (1) EP0436967B1 (ja)
JP (1) JPH0394203U (ja)
DE (1) DE69013319T2 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4221759C2 (de) * 1991-10-11 1997-11-20 Hitachi Medical Corp Empfangsspulenvorrichtung für ein Kernspintomographiegerät
AU2003272059A1 (en) * 2002-10-17 2004-05-04 Ramot At Tel Aviv University Ltd. A radiofrequency magnetic field resonator and a method of designing the same
KR101424976B1 (ko) * 2012-11-08 2014-08-13 삼성전자주식회사 위상 배열형 고주파 코일 및 이를 채용한 자기공명영상 장치
EP3096153A1 (en) 2015-05-22 2016-11-23 MRI.Tools GmbH Rf coil with dielectric material
CN105788801B (zh) * 2015-12-28 2017-11-28 沈阳东软医疗系统有限公司 一种用于mri梯度放大器性能测试的线圈组件

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63222754A (ja) * 1987-03-13 1988-09-16 株式会社日立製作所 核磁気共鳴イメージング用高周波コイル

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8334374D0 (en) * 1983-12-23 1984-02-01 Picker Int Ltd Coil arrangements
US4660013A (en) * 1985-09-23 1987-04-21 General Electric Company Compact whole body resistive magnetic resonance imaging magnet
FR2588994B1 (fr) * 1985-10-18 1987-11-20 Thomson Cgr Bobine de gradient pour appareils d'imagerie par resonance magnetique nucleaire
US4720680A (en) * 1986-02-18 1988-01-19 Mitsubishi Denki Kabushiki Kaisha Adjustable radio frequency coil for nuclear magnetic resonance imaging
US4875013A (en) * 1987-03-13 1989-10-17 Hitachi, Ltd. High-frequency coil for nuclear magnetic imaging

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63222754A (ja) * 1987-03-13 1988-09-16 株式会社日立製作所 核磁気共鳴イメージング用高周波コイル

Also Published As

Publication number Publication date
EP0436967B1 (en) 1994-10-12
EP0436967A1 (en) 1991-07-17
US5191289A (en) 1993-03-02
DE69013319D1 (de) 1994-11-17
DE69013319T2 (de) 1995-04-27

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