JP2005052658A - 円筒状のmriシステム内のmri患者ボアに対する能動的冷却のための装置 - Google Patents
円筒状のmriシステム内のmri患者ボアに対する能動的冷却のための装置 Download PDFInfo
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- JP2005052658A JP2005052658A JP2004230068A JP2004230068A JP2005052658A JP 2005052658 A JP2005052658 A JP 2005052658A JP 2004230068 A JP2004230068 A JP 2004230068A JP 2004230068 A JP2004230068 A JP 2004230068A JP 2005052658 A JP2005052658 A JP 2005052658A
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- 238000001816 cooling Methods 0.000 title claims abstract description 48
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 125000006850 spacer group Chemical group 0.000 claims abstract description 17
- 239000002826 coolant Substances 0.000 claims description 36
- 238000003384 imaging method Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 3
- 238000002595 magnetic resonance imaging Methods 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 9
- 230000005415 magnetization Effects 0.000 description 8
- 239000004593 Epoxy Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 239000012809 cooling fluid Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 2
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- 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
- G01R33/34015—Temperature-controlled RF coils
- G01R33/3403—Means for cooling of the RF coils, e.g. a refrigerator or a cooling vessel specially adapted for housing an RF coil
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/20—Electromagnets; Actuators including electromagnets without armatures
- H01F7/202—Electromagnets for high magnetic field strength
-
- 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
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/3804—Additional hardware for cooling or heating of the magnet assembly, for housing a cooled or heated part of the magnet assembly or for temperature control of the magnet assembly
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
Abstract
【解決手段】患者ボア(140)は長手方向またはらせん状に布設したスペーサ(133)によって分離した2つの同心状円筒(131、132)からなる。本発明の別の実施形態では、患者ボア(240)のうちの患者に対して露出した部分が直接冷却されるように、患者ボアの外側直径と結合させたチューブ(232)を通るように、流体をらせん状または長手方向のいずれかで通過させることができる。第3の実施形態では、患者ボア(340)を囲繞してらせん状または長手方向の流体チャンネル(332)を設けるようにして、RFコイル(330)によって患者ボア(340)の一部を形成させることができる。
【選択図】 図2
Description
114 傾斜コイル
116 マグネット
123 エポキシ様材料の層
125 エポキシ様材料の層
130 RFコイル
131 内側円筒
132 外側円筒
133 長手方向スペーサ
134 冷却材通路
135 スペーサ
140 患者ボア表面
200 MRIイメージング・システム
214 傾斜コイル
216 マグネット
223 エポキシ層
225 エポキシ層
230 RFマグネット・コイル
232 冷却用チューブ
240 患者ボア表面
314 傾斜コイル
316 マグネット
325 エポキシ層
330 RFコイル
332 冷却用チューブ
340 患者ボア・エンクロージャ
Claims (10)
- 円筒状のMRイメージング・システム内のRFコイル(330)向けの患者ボア冷却アセンブリであって、
内側表面を有する全体として円筒状のRFコイル(330)と、
前記RFコイル(330)に装着した複数の冷却用チャンネル(332)と、
を備える患者ボア冷却アセンブリ。 - 前記複数の冷却用チャンネルがさらに、
前記RFコイル(130)の内側表面に装着した外側円筒(132)と、
前記外側円筒(132)と同心状とした内側円筒(131)と、
前記内側円筒(131)から半径方向で外方に延びると共に前記外側円筒(132)に装着されている複数の長手方向スペーサ(133)と、
を備えている、請求項1に記載の患者ボア冷却アセンブリ。 - 円筒状のMRイメージング・システム(100)で使用されるRFコイル向けの患者ボア冷却アセンブリであって、
中空の円筒状構成をした傾斜コイル巻き線(114)と、
前記傾斜コイル(114)と同心状でありかつ該傾斜コイルと比べて若干小さい中空の円筒状RFコイル(130)と、
前記RFコイル(130)に装着した外側円筒(132)と、
前記外側円筒(132)と同心状とした内側円筒(131)と、
前記内側円筒(131)から半径方向で外方に突き出ると共に前記外側円筒(132)に装着させ、これによって前記内側と外側の同心状円筒(131)(132)の間に冷却用チャンネル(134)を形成している複数のスペーサ(133)と、
を備える患者ボア冷却アセンブリ。 - 前記円筒(131)は1つの軸を有しており、かつ前記スペーサ(133)は前記円筒(131)の該軸に沿って長手方向に配列させている、請求項3に記載の患者ボア冷却アセンブリ。
- 前記スペーサ(133)が前記内側円筒(131)の周りでらせん状に位置決めされている、請求項4に記載の患者ボア冷却アセンブリ。
- 円筒状のMRシステム内のRFコイル(130)向けの患者ボア冷却アセンブリであって、
中空の円筒状構成をした傾斜コイル巻き線(114)と、
前記傾斜コイル巻き線(114)の内部にある、中空の円筒状構成としたRFコイル(230)と、
前記RFコイル(114)の内部にある、内部表面及び外部表面を有するような全体として円筒状の患者ボア(240)と、
前記患者ボア(240)の外部表面に装着しているらせん状構成をした冷却用チューブ(232)と、
を備える患者ボア冷却アセンブリ。 - 複数の接続チューブと、
循環式接続チューブを通るように流体を移動させているポンプと、
前記接続チューブ内の前記流体を冷却している熱交換器と、
をさらに備える請求項6に記載の患者ボア冷却アセンブリ。 - 前記患者ボア・アセンブリ(240)の内部に配置させた複数の温度センサと、
前記冷却材ポンプ及び前記温度センサと電子的にリンクさせたコンピュータであって、患者ボア(240)温度が上昇した場合には冷却材の流れを増大させかつ冷却材温度が低下した場合には冷却材の流れを減少させるようにプログラムされているコンピュータと、
をさらに備える請求項7に記載の患者ボア冷却アセンブリ。 - 円筒状のMRシステム内のRFコイル(130)向けの患者ボア冷却アセンブリであって、複数の長手方向の冷却用チャンネルを前記円筒状RFコイル(130)自体の内部に埋め込んで備える患者ボア冷却アセンブリ。
- 複数の接続チューブと、
接続チューブから前記長手方向のチューブまで冷却材を導いている取り込みマニホールドと、
前記長手方向のチューブから接続チューブまで冷却材を回収している排出マニホールドと、
前記循環式接続チューブを通るように流体を移動させているポンプと、
前記接続チューブ内の前記流体を冷却している熱交換器と、
をさらに備える請求項9に記載の患者ボア冷却アセンブリ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/604,654 US7015692B2 (en) | 2003-08-07 | 2003-08-07 | Apparatus for active cooling of an MRI patient bore in cylindrical MRI systems |
US10/604,654 | 2003-08-07 |
Publications (3)
Publication Number | Publication Date |
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JP2005052658A true JP2005052658A (ja) | 2005-03-03 |
JP2005052658A5 JP2005052658A5 (ja) | 2007-09-20 |
JP4719438B2 JP4719438B2 (ja) | 2011-07-06 |
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JP2004230068A Active JP4719438B2 (ja) | 2003-08-07 | 2004-08-06 | 円筒状のmriシステム内のmri患者ボアに対する能動的冷却のための装置 |
Country Status (5)
Country | Link |
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US (1) | US7015692B2 (ja) |
JP (1) | JP4719438B2 (ja) |
CN (1) | CN100398060C (ja) |
DE (1) | DE102004038237B4 (ja) |
GB (1) | GB2405480B (ja) |
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Also Published As
Publication number | Publication date |
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GB2405480A (en) | 2005-03-02 |
DE102004038237A1 (de) | 2005-03-03 |
CN1623504A (zh) | 2005-06-08 |
GB0417095D0 (en) | 2004-09-01 |
JP4719438B2 (ja) | 2011-07-06 |
GB2405480B (en) | 2007-06-27 |
US20050030028A1 (en) | 2005-02-10 |
US7015692B2 (en) | 2006-03-21 |
CN100398060C (zh) | 2008-07-02 |
DE102004038237B4 (de) | 2013-10-02 |
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