JPH0217112U - - Google Patents
Info
- Publication number
- JPH0217112U JPH0217112U JP9617688U JP9617688U JPH0217112U JP H0217112 U JPH0217112 U JP H0217112U JP 9617688 U JP9617688 U JP 9617688U JP 9617688 U JP9617688 U JP 9617688U JP H0217112 U JPH0217112 U JP H0217112U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- subject
- cervical vertebrae
- magnetic field
- saddle
- 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
Links
- 230000003068 static effect Effects 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 239000011810 insulating material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 1
- 210000001767 medulla oblongata Anatomy 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Description
第１図ａ〜ｄは、本考案の一実施例による頚椎
用ＲＦコイルを表わす図、第２図は本考案の一実
施例による頚椎用ＲＦコイルを被検体に装着した
図、第３図は本考案の一実施例の頚椎用ＲＦコイ
ルの等価回路図、第４図は従来例のＭＲＩ装置の
概略図、第５図ａ，ｂは従来例の頚椎用ＲＦコイ
ルを表す図、第６図は従来例の頚椎用ＲＦコイル
を被検体に装着した図である。
１…静磁場マグネツト、２…被検体、３…ＲＦ
コイル、４…勾配磁場コイル、５…導電部、６，
６ａ，６ｂ，１４…共振用コンデンサ、７…給電
端子、８…コード、９，１１…コイル、１０…耳
、１１ａ…長辺部、１１ｂ…短辺部、１１ｃ…側
面部、１１ｃ１…傾斜部、１１ｃ２…垂直部、１
２ａ…頚椎、１２ｂ…延髄、１２ｃ…胸椎、１３
，１５ｂ…インダクタンス、１５ａ…クロスダイ
オード、１５…デカツプリング回路。
1A to 1D are diagrams showing an RF coil for cervical vertebrae according to an embodiment of the present invention, FIG. 2 is a diagram of the RF coil for cervical vertebrae according to an embodiment of the present invention attached to a subject, and FIG. An equivalent circuit diagram of an RF coil for cervical vertebrae according to an embodiment of the present invention, FIG. 4 is a schematic diagram of a conventional MRI apparatus, FIG. 5 a and b are diagrams representing a conventional RF coil for cervical vertebrae, and FIG. 6 1 is a diagram showing a conventional cervical vertebra RF coil attached to a subject. 1... Static magnetic field magnet, 2... Subject, 3... RF
Coil, 4... Gradient magnetic field coil, 5... Conductive part, 6,
6a, 6b, 14... Resonance capacitor, 7... Power supply terminal, 8... Cord, 9, 11... Coil, 10... Ear, 11a... Long side part, 11b... Short side part, 11c... Side part, 11c1... Inclined part , 11c2...Vertical part, 1
2a...cervical vertebrae, 12b...medulla oblongata, 12c...thoracic vertebrae, 13
, 15b...inductance, 15a...cross diode, 15...decoupling circuit.
Claims (1)
側から設置され、鞍形の導電材で構成されるＭＲ
Ｉ装置の頚椎用ＲＦコイルにおいて、前記鞍形の
導電材は垂直方向から見た底部形状が、前記静磁
場方向に直交した水平方向に平行な辺を持つ略等
脚台形、前記水平方向から見た側部形状が略逆Ｕ
字状であつて、前記台形の長辺１１ａが被検体頭
部側、短辺１１ｂが被検体肩部側に配置され、前
記逆Ｕ字状側部１１ｃは、前記肩側辺１１ｃ２が
略垂直、前記頭部側辺１１ｃ１が体軸下方向に傾
斜を持つように構成され、前記導電部周縁上に直
列に接続された少なくとも１個の容量素子を備え
ることを特徴とする頚椎用ＲＦコイル。 (2) 前記容量素子は、前記長辺１１ａ又は短辺
１１ｂの略中央に設置されていることを特徴とす
る請求項(1)記載の頚椎用ＲＦコイル。 (3) 前記導電部は、チユーブ状の絶縁材で被覆
された銅管で構成されていることを特徴とする請
求項(1)記載の頚椎用ＲＦコイル。[Scope of Claim for Utility Model Registration] (1) MR that is installed from the back side of the neck of a subject placed in the direction of a static magnetic field and is made of a saddle-shaped conductive material.
In the cervical vertebra RF coil of the I device, the bottom shape of the saddle-shaped conductive material when viewed from the vertical direction is approximately an isosceles trapezoid with sides parallel to the horizontal direction perpendicular to the direction of the static magnetic field, and when viewed from the horizontal direction The side shape is almost an inverted U.
The long side 11a of the trapezoid is placed on the subject's head side, the short side 11b is placed on the subject's shoulder side, and the inverted U-shaped side part 11c has a shoulder side side 11c2 that is substantially vertical. An RF coil for cervical vertebrae, characterized in that the head side side 11c1 is configured to be inclined in the downward direction of the body axis, and includes at least one capacitive element connected in series on the periphery of the conductive part. (2) The RF coil for cervical vertebrae according to claim (1), wherein the capacitive element is installed approximately at the center of the long side 11a or the short side 11b. (3) The RF coil for cervical vertebrae according to claim (1), wherein the conductive part is composed of a copper tube covered with a tubular insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9617688U JPH0451774Y2 (en) | 1988-07-20 | 1988-07-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9617688U JPH0451774Y2 (en) | 1988-07-20 | 1988-07-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0217112U true JPH0217112U (en) | 1990-02-05 |
| JPH0451774Y2 JPH0451774Y2 (en) | 1992-12-07 |
Family
ID=31321014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9617688U Expired JPH0451774Y2 (en) | 1988-07-20 | 1988-07-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0451774Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101978770B1 (en) * | 2018-08-06 | 2019-05-15 | 최종수 | Aid for supporting of jaw angle and jaw angle correcting device including the same |
-
1988
- 1988-07-20 JP JP9617688U patent/JPH0451774Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0451774Y2 (en) | 1992-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0301232B1 (en) | Dual frequency NMR surface coil | |
| US6930480B1 (en) | Head coil arrays for parallel imaging in magnetic resonance imaging | |
| JPS63122443A (en) | Surface cavity for nuclear magnetic resonance tomography | |
| JP4588830B2 (en) | RF coil array device for vertical magnetic field MRI | |
| JP2008177566A (en) | High q value, low volume air core inductor | |
| JPH0350542B2 (en) | ||
| US5646530A (en) | Surface coil for high resolution imaging using a magnetic resonance imaging apparatus | |
| JPS6162454A (en) | Radio wave frequency antenna apparatus for nuclear magnetic resonance image | |
| JPH05269105A (en) | Magnetic resonator | |
| US5343862A (en) | NMR shoulder coil | |
| US7031763B1 (en) | MRI shoulder coil | |
| JP3645368B2 (en) | Magnetic resonance imaging system | |
| JP2641808B2 (en) | MRI antenna coil | |
| JPH01165010U (en) | ||
| EP0133382A1 (en) | Radiofrequency coil | |
| JPH0451774Y2 (en) | ||
| JPH0349368Y2 (en) | ||
| JPH04279149A (en) | Probe for magnetic resonance imaging apparatus | |
| JP3755949B2 (en) | High frequency coil for magnetic resonance imaging and magnetic resonance imaging apparatus | |
| JPH026007U (en) | ||
| JPH08107889A (en) | Nuclear spin tomography device | |
| JPH0414891Y2 (en) | ||
| JPH05305064A (en) | Receiver coil of MRI device | |
| JPH0534642Y2 (en) | ||
| JPH01238849A (en) | Rf coil for head part |