发明授权
- 专利标题： Reception unit for a magnetic resonance tomography apparatus
- 专利标题（中）： 用于磁共振断层摄影装置的接收单元
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申请号： US11200815申请日： 2005-08-10
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公开(公告)号： US07126337B2公开(公告)日： 2006-10-24
- 发明人: Ralph Oppelt
- 申请人： Ralph Oppelt
- 申请人地址： DE Munich
- 专利权人： Siemens Aktiengesellschaft
- 当前专利权人： Siemens Aktiengesellschaft
- 当前专利权人地址： DE Munich
- 代理机构： Schiff Hardin LLP
- 优先权： DE102004038849 20040810
- 主分类号： G01V3/00
- IPC分类号： G01V3/00
摘要：
A reception unit for a magnetic resonance tomography apparatus has an RF preamplifier connected at its signal input to a local coil with a PIN diode connected in parallel with the signal input and a supply voltage connection of the RF preamplifier being connected to a direct voltage source. The reception unit has a supply node that is connected with the supply voltage connection, the PIN diode and a cross-over switch for alternating connection of the supply node to the direct voltage source or a direct current source.