JPS6476842A - Apparatus for obtaining signal containing spin/spin relaxing time data - Google Patents
Apparatus for obtaining signal containing spin/spin relaxing time dataInfo
- Publication number
- JPS6476842A JPS6476842A JP62234359A JP23435987A JPS6476842A JP S6476842 A JPS6476842 A JP S6476842A JP 62234359 A JP62234359 A JP 62234359A JP 23435987 A JP23435987 A JP 23435987A JP S6476842 A JPS6476842 A JP S6476842A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- spin
- echo signal
- axis
- period
- 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
Abstract
PURPOSE:To obtain the image of the first echo signal of a sufficiently short echo time and the image of the second echo signal of a long echo time having no artifact, by obtaining the first echo signal only by the change-over of a 90 deg.-pulse and an inclined magnetic field without using a plurality of 180 deg.-pulses and obtaining the second echo signal using the 180 deg.-pulse. CONSTITUTION:The direction of the magnetic field generated by a magnet 1 for generating a static magnetic field is set to a Z-axis and an object to be examined 2, for example, a person is arranged in the static magnetic field by the magnet 1. A 90 deg.-pulse is applied using a coil 7 in such a state that a Y-axis direction inclined magnetic field Gy is applied for the purpose of slice selection at a period t1. As a result, the nuclear spin within the selected plane obtained by cutting the object 2 to be examined in a direction vertical to a Y-axis at the specific point on the Y-axis is excited. Next, an X-axis direction inclined magnetic field Gx is applied for a definite time at a period t2 and the nuclear spin is dephased. The direction of the X-axis direction inclined magnetic field Gx is changed over at a period t2 to form a reading magnetic field. The nuclear spin is rephased by this magnetic field Gx. The first echo signal P1 is obtained at this period t3. As mentioned above, a required image is obtained only by the successive change-over of an inclined magnetic field.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62234359A JPS6476842A (en) | 1987-09-18 | 1987-09-18 | Apparatus for obtaining signal containing spin/spin relaxing time data |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62234359A JPS6476842A (en) | 1987-09-18 | 1987-09-18 | Apparatus for obtaining signal containing spin/spin relaxing time data |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6476842A true JPS6476842A (en) | 1989-03-22 |
JPH0479256B2 JPH0479256B2 (en) | 1992-12-15 |
Family
ID=16969768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62234359A Granted JPS6476842A (en) | 1987-09-18 | 1987-09-18 | Apparatus for obtaining signal containing spin/spin relaxing time data |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6476842A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8446148B2 (en) | 2008-08-29 | 2013-05-21 | Siemens Medical Solutions Usa, Inc. | Long T1 artifact suppression techniques for magnetic resonance imaging |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6076654A (en) * | 1983-07-19 | 1985-05-01 | ザ・リージェンツ・オブ・ザ・ユニバーシテイー・オブ・カリフォルニア | High-speed nmr picture forming method using multidimensionalreconstitution technique and device thereof |
JPS60146140A (en) * | 1984-01-10 | 1985-08-01 | Yokogawa Hokushin Electric Corp | Method and apparatus of inspection using nuclear magnetic resonance |
JPS60150739A (en) * | 1983-11-25 | 1985-08-08 | ゼネラル・エレクトリツク・カンパニイ | Generation of nmr image |
JPS60166853A (en) * | 1984-10-30 | 1985-08-30 | Yokogawa Hokushin Electric Corp | Nmr image apparatus |
-
1987
- 1987-09-18 JP JP62234359A patent/JPS6476842A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6076654A (en) * | 1983-07-19 | 1985-05-01 | ザ・リージェンツ・オブ・ザ・ユニバーシテイー・オブ・カリフォルニア | High-speed nmr picture forming method using multidimensionalreconstitution technique and device thereof |
JPS60150739A (en) * | 1983-11-25 | 1985-08-08 | ゼネラル・エレクトリツク・カンパニイ | Generation of nmr image |
JPS60146140A (en) * | 1984-01-10 | 1985-08-01 | Yokogawa Hokushin Electric Corp | Method and apparatus of inspection using nuclear magnetic resonance |
JPS60166853A (en) * | 1984-10-30 | 1985-08-30 | Yokogawa Hokushin Electric Corp | Nmr image apparatus |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8446148B2 (en) | 2008-08-29 | 2013-05-21 | Siemens Medical Solutions Usa, Inc. | Long T1 artifact suppression techniques for magnetic resonance imaging |
Also Published As
Publication number | Publication date |
---|---|
JPH0479256B2 (en) | 1992-12-15 |
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