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    • 10. 发明授权
    • Magnetic resonance system with coupling between a base unit and a local coil at the patient bed
    • 磁共振系统,在患者床上具有基座单元和局部线圈之间的联接
    • US07486077B2
    • 2009-02-03
    • US11954031
    • 2007-12-11
    • Martin HergtThomas Kundner
    • Martin HergtThomas Kundner
    • G01V3/00
    • G01R33/3415G01R33/3642G01R33/3657G01R33/56383
    • A magnetic resonance system has a base unit and a patient bed. The base unit embodies a magnet system by which magnetic fields can be generated in an excitation region, these magnetic fields causing nuclear spins in an examination subject in the excitation region to be excited to emit a magnetic resonance signal. The patient bed can be moved in a travel direction relative to the base body over a travel range. By movement of the patient bed the examination subject can be brought into the excitation region. A number of base unit coupling elements that are connected with an evaluation device for evaluation of magnetic resonance signals are arranged to be stationary at the base unit relative to the base unit. A number of patient bed coupling elements that are connected with a local coil for acquisition of the magnetic resonance signal are arranged on the patient bed so as to be stationary relative to the patient bed. The base unit coupling elements and the patient bed coupling elements are arranged and fashioned such that the magnetic resonance signal acquired by the local coil can be fed via the patient bed coupling elements and the base unit coupling elements to the evaluation device when and as long as the patient bed has moved by a predetermined segment of the travel range. A degree of coupling with which the patient bed coupling elements and the base unit coupling elements and coupled with one another in total is constant within the segment of the travel range.
    • 磁共振系统具有基本单元和病床。 基本单元体现了一种磁体系统,通过该磁体系统可以在激发区域中产生磁场,这些磁场使得激励区域中的检查对象中的核自旋被激发以发出磁共振信号。 患者床可以在行进范围内相对于基体在行进方向上移动。 通过患者床的运动,检查对象可以进入激发区域。 与用于评估磁共振信号的评估装置连接的多个基本单元耦合元件布置成相对于基座单元在基座单元处是静止的。 与用于获取磁共振信号的局部线圈连接的多个患者床联接元件布置在患者床上以相对于患者床固定。 基本单元联接元件和患者床联接元件被布置和形成为使得当局部线圈获得的磁共振信号可以经由患者床耦合元件和基座单元耦合元件馈送到评估设备,当且仅当 患者床移动预定的行程范围。 患者床联接元件和基本单元联接元件并且总共彼此耦合的耦合程度在行程范围的段内是恒定的。