JPH0169508U - - Google Patents
Info
- Publication number
- JPH0169508U JPH0169508U JP1987166428U JP16642887U JPH0169508U JP H0169508 U JPH0169508 U JP H0169508U JP 1987166428 U JP1987166428 U JP 1987166428U JP 16642887 U JP16642887 U JP 16642887U JP H0169508 U JPH0169508 U JP H0169508U
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- amplitude
- magnetic resonance
- product
- nuclear magnetic
- 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
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000013421 nuclear magnetic resonance imaging Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 1
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Description
第１図は本考案の一実施例の装置のパルスシー
ケンスの図、第２図は従来のパルスシーケンスの
図、第３図はＮＭＲ―ＣＴのパルス法の原理説明
図、第４図はＮＭＲ―ＣＴのパルスシーケンスを
示す図である。
１…９０°パルス、２，５…１８０°パルス、
３…選択励起勾配磁場、４，６…選択反転勾配磁
場。
Fig. 1 is a diagram of a pulse sequence of an apparatus according to an embodiment of the present invention, Fig. 2 is a diagram of a conventional pulse sequence, Fig. 3 is a diagram explaining the principle of the NMR-CT pulse method, and Fig. 4 is a diagram of the NMR-CT pulse method. It is a figure showing the pulse sequence of CT. 1...90° pulse, 2,5...180° pulse,
3... Selective excitation gradient magnetic field, 4, 6... Selective reversal gradient magnetic field.
Claims (1)
データとして採取するフーリエ変換法によつて画
像撮影を行う核磁気共鳴画像診断装置において、
被検体の体積に応じて１８０°パルスの振幅とパ
ルス幅との積を略一定に保つように相互に変化せ
しめたパルスシーケンスを有することを特徴とす
る核磁気共鳴画像診断装置。 In a nuclear magnetic resonance imaging diagnostic apparatus that uses a 180° pulse to capture images using the Fourier transform method that collects spin echo signals as data,
A nuclear magnetic resonance imaging diagnostic apparatus characterized by having a pulse sequence in which the product of the amplitude of the 180° pulse and the pulse width is mutually varied so as to keep the product of the amplitude and the pulse width substantially constant according to the volume of a subject.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16642887U JPH0436813Y2 (en) | 1987-10-30 | 1987-10-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16642887U JPH0436813Y2 (en) | 1987-10-30 | 1987-10-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0169508U true JPH0169508U (en) | 1989-05-09 |
| JPH0436813Y2 JPH0436813Y2 (en) | 1992-08-31 |
Family
ID=31453800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16642887U Expired JPH0436813Y2 (en) | 1987-10-30 | 1987-10-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0436813Y2 (en) |
-
1987
- 1987-10-30 JP JP16642887U patent/JPH0436813Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0436813Y2 (en) | 1992-08-31 |
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