发明名称 |
Pulse sequence for operating a nuclear magnetic resonance tomography apparatus for producing images with different T2 contrast |
摘要 |
A pulse sequence is disclosed for operating a nuclear magnetic resonance tomography apparatus for producing images having different T2 contrast. A signal for the gradient-echo imaging is first acquired after excitation of the nuclei subsequently, the magnetization, which is already prepared for imaging, is refocused by a 180 DEG radio-frequency pulse, and a second echo is measured in the presence of a readout gradient. Independent images having different T2 contrast can be reconstructed with the gradient echo and with the spin echo. It is thus possible to simultaneously measure a gradient echo image having a significantly lower T2 contrast during the measuring time for a spin echo image.
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申请公布号 |
US4901020(A) |
申请公布日期 |
1990.02.13 |
申请号 |
US19890327891 |
申请日期 |
1989.03.23 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
LADEBECK, RALF;FISCHER, HUBERTUS;SCHMITT, FRANZ |
分类号 |
G01R33/50;G01R33/56 |
主分类号 |
G01R33/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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