JPH0440609U - - Google Patents
Info
- Publication number
- JPH0440609U JPH0440609U JP8115690U JP8115690U JPH0440609U JP H0440609 U JPH0440609 U JP H0440609U JP 8115690 U JP8115690 U JP 8115690U JP 8115690 U JP8115690 U JP 8115690U JP H0440609 U JPH0440609 U JP H0440609U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- preamplifier
- impedance matching
- magnetic resonance
- receiving coil
- 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
Links
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000002595 magnetic resonance imaging Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Description
第１図は、本考案による磁気共鳴イメージング
装置に適用される受信コイル部の一実施例を示し
た回路図、第２図は、本考案による磁気共鳴イメ
ージング装置の一実施例を示した全体構成図、第
３図は、従来の磁気共鳴イメージング装置に適用
された受信コイル部の一例を示した回路図、第４
図は、本考案による磁気共鳴イメージング装置の
効果を説明するためのグラフ、第５図は、従来の
磁気共鳴イメージング装置の問題点を明確にする
ためのグラフである。
図中、１……受信コイル、２……インピーダン
ス整合容量、３……共鳴周波数調整容量、４，５
……可変容量。
FIG. 1 is a circuit diagram showing an embodiment of a receiving coil section applied to a magnetic resonance imaging apparatus according to the present invention, and FIG. 2 is an overall configuration showing an embodiment of a magnetic resonance imaging apparatus according to the present invention. 3 is a circuit diagram showing an example of a receiving coil section applied to a conventional magnetic resonance imaging apparatus, and FIG.
The figure is a graph for explaining the effects of the magnetic resonance imaging apparatus according to the present invention, and FIG. 5 is a graph for clarifying the problems of the conventional magnetic resonance imaging apparatus. In the figure, 1... Receiving coil, 2... Impedance matching capacitor, 3... Resonance frequency adjustment capacitor, 4, 5
...Variable capacity.
Claims (1)
号を取り出すものであつて、前記受信コイルとプ
リアンプとの間に、共振周波数調整容量および前
記プリアンプとのインピーダンス整合を図るイン
ピーダンス整合容量とが介在されている磁気共鳴
イメージング装置において、前記インピーダンス
整合容量と並列に接続された可変容量と、この可
変容量の容量を可変させる手段とを備えたことを
特徴とする磁気共鳴イメージング装置。 A magnetic resonance signal is extracted from a receiving coil via a preamplifier, and a resonance frequency adjustment capacitor and an impedance matching capacitor for impedance matching with the preamplifier are interposed between the receiving coil and the preamplifier. A magnetic resonance imaging apparatus comprising: a variable capacitor connected in parallel with the impedance matching capacitor; and means for varying the capacitance of the variable capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8115690U JPH0440609U (en) | 1990-08-01 | 1990-08-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8115690U JPH0440609U (en) | 1990-08-01 | 1990-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0440609U true JPH0440609U (en) | 1992-04-07 |
Family
ID=31626844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8115690U Pending JPH0440609U (en) | 1990-08-01 | 1990-08-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0440609U (en) |
-
1990
- 1990-08-01 JP JP8115690U patent/JPH0440609U/ja active Pending
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