专利名称：Circuit for active decoupling of transmit coils
in nuclear magnetic resonance imagingapparatuses, particularly of the low fieldtype
发明人：Viti, Vittorio申请号：EP02024057.8申请日：20021028公开号：EP1308742A1公开日：20030507
专利附图：
摘要：A circuit for active decoupling of transmit coils in Nuclear Magnetic Resonance
imaging apparatuses, particularly of the low field type, including at least one PIN diode(D1), which is connected in series with the conductors of at least one transmit coil (1) andhas at least one input (4) for an incoming bias current, there being provided means forgenerating and feeding such a bias current as to determine the conductive state of thePIN diode (D1), hence the operative state of the excitation pulse transmitting coil insynchronism with the start of excitation pulse transmission, and the nonconductive stateof the PIN diode, i.e. the decoupling of the transmit coil from the receiving coil at the endof excitation pulse transmission. According to the invention, said circuit has at least oneadditional diode (D2) which is a silicon diode connected in antiparallel with the PIN diode(D1).
申请人：Esaote S.p.A.
地址：Via Ruffino Aliora 32 15033 Casale Monferrato (AL) IT
国籍：IT
代理机构：Karaghiosoff, Giorgio A.
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容