发明名称 |
Inspecting method and apparatus based on nuclear magnetic resonance using burst wave as exciting high frequency pulse |
摘要 |
In an inspecting method based on nuclear magnetic resonance, a burst wave having a plurality of sub-pulses frequency-modulated with a high frequency is generated, the burst wave is amplitude-modulated with at least a function which repeats polarity inversion, the amplitude-modulated burst wave is irradiated, as an exciting high frequency pulse, to an object to be inspected, and gradient magnetic fields are generated in predetermined pulse sequence to measure a nuclear magnetic resonance signal.
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申请公布号 |
US5789922(A) |
申请公布日期 |
1998.08.04 |
申请号 |
US19960645478 |
申请日期 |
1996.05.13 |
申请人 |
HITACHI, LTD.;HITACHI MEDICAL CORPORATION |
发明人 |
OCHI, HISAAKI;YAMAMOTO, ETSUJI;TANIGUCHI, YO |
分类号 |
G01R33/46;A61B5/055;G01R33/48;G01R33/561;(IPC1-7):A61B5/055 |
主分类号 |
G01R33/46 |
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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