JP2000083922A5 - - Google Patents
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- JP2000083922A5 JP2000083922A5 JP1998274283A JP27428398A JP2000083922A5 JP 2000083922 A5 JP2000083922 A5 JP 2000083922A5 JP 1998274283 A JP1998274283 A JP 1998274283A JP 27428398 A JP27428398 A JP 27428398A JP 2000083922 A5 JP2000083922 A5 JP 2000083922A5
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- magnetic resonance
- temperature change
- region
- resonance signal
- 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.)
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- 230000003068 static Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000002595 magnetic resonance imaging Methods 0.000 description 2
- 210000004940 Nucleus Anatomy 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 1
Description
【特許請求の範囲】
【請求項１】
静磁場を発生する静磁場発生手段と、前記静磁場中に置かれた被検査体に対して高周波電磁波を印加して所望の領域を励起する送信手段と、前記静磁場に磁場勾配を与える傾斜磁場発生手段と、前記励起領域から発生する核磁気共鳴信号を計測する受信手段と、これら送信手段と、傾斜磁場発生手段および受信手段を所定のパルスシーケンスに従い制御する制御手段と、計測された核磁気共鳴信号を再構成して得られる画像の位相情報から前記励起領域の温度変化を求める画像処理手段を備えた磁気共鳴イメージング装置において、
前記制御手段は、前記温度変化の範囲毎に前記励起領域を分割して励起すると共に、該分割領域毎にその温度変化範囲に対応するＴＥで前記核磁気共鳴信号を計測することを特徴とする磁気共鳴イメージング装置。
[Claims]
[Claim 1]
A static magnetic field generating means that generates a static magnetic field, a transmitting means that applies a high-frequency electromagnetic wave to an object to be inspected placed in the static magnetic field to excite a desired region, and an inclination that gives a magnetic field gradient to the static magnetic field. A magnetic field generating means, a receiving means for measuring a nuclear magnetic resonance signal generated from the excitation region, a controlling means for controlling these transmitting means, a gradient magnetic field generating means and a receiving means according to a predetermined pulse sequence, and a measured nucleus. In a magnetic resonance imaging apparatus provided with an image processing means for obtaining a temperature change in the excitation region from the phase information of an image obtained by reconstructing a magnetic resonance signal.
The control means is characterized in that the excitation region is divided and excited for each temperature change range, and the nuclear magnetic resonance signal is measured with a TE corresponding to the temperature change range for each divided region. Magnetic resonance imaging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27428398A JP4079399B2 (en) | 1998-09-11 | 1998-09-11 | Magnetic resonance imaging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27428398A JP4079399B2 (en) | 1998-09-11 | 1998-09-11 | Magnetic resonance imaging system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2000083922A JP2000083922A (en) | 2000-03-28 |
| JP2000083922A5 true JP2000083922A5 (en) | 2005-11-04 |
| JP4079399B2 JP4079399B2 (en) | 2008-04-23 |
Family
ID=17539499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27428398A Expired - Fee Related JP4079399B2 (en) | 1998-09-11 | 1998-09-11 | Magnetic resonance imaging system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4079399B2 (en) |
-
1998
- 1998-09-11 JP JP27428398A patent/JP4079399B2/en not_active Expired - Fee Related
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