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    • 42. 发明申请
    • MAGNETIC RESONANCE SYSTEM WITH TRANSMISSION OF A DIGITIZED MAGNETIC RESONANCE SIGNAL ACROSS AN AIR GAP
    • 通过空气隙传输一个数字化磁共振信号的磁共振系统
    • US20100072997A1
    • 2010-03-25
    • US12563331
    • 2009-09-21
    • Hubertus FischerWolfgang Renz
    • Hubertus FischerWolfgang Renz
    • G01R33/48G01R33/44
    • G01R33/3621G01R33/3692
    • A magnetic resonance system has a patient receptacle and a base body. The patient receptacle has a subframe and a patient bed supported thereon so as to move a patient thereon through the base body. The base body has a basic field magnet system, a gradient system and an RF system that are operable to obtain an analog magnetic resonance signal from the patient. The patient receptacle has a signal conversion device composed of an A/D converter, a modulator, and a transmitter. The base body has a signal conversion device composed of a receiver and a demodulator. The A/D converter receives the magnetic resonance signal and digitizes it. The modulator modulates a carrier signal with the digitized magnetic resonance signal. The transmitter transmits the modulated carrier signal via an air gap to the receive. The receiver receives the transmitted carrier signal. The demodulator extracts the digitized magnetic resonance signal from the received carrier signal by demodulation and supplies it to an evaluation device for continuing evaluation.
    • 磁共振系统具有患者容器和基体。 患者容器具有支撑在其上的子框架和患者床,以使患者在其上移动穿过基体。 基体具有可操作以从患者获得模拟磁共振信号的基本场磁体系统,梯度系统和RF系统。 患者插座具有由A / D转换器,调制器和发射器组成的信号转换装置。 基体具有由接收器和解调器构成的信号转换装置。 A / D转换器接收磁共振信号并对其进行数字化。 调制器用数字化的磁共振信号调制载波信号。 发射机通过气隙将调制载波信号发送到接收机。 接收机接收发送的载波信号。 解调器通过解调从接收的载波信号中提取数字化的磁共振信号,并将其提供给用于继续评估的评估装置。
    • 43. 发明授权
    • Magnetic resonance system with reception antenna device
    • 具有接收天线装置的磁共振系统
    • US07518373B2
    • 2009-04-14
    • US11924777
    • 2007-10-26
    • Hubertus FischerMartin HergtThomas Kundner
    • Hubertus FischerMartin HergtThomas Kundner
    • G01V3/00
    • G01R33/341A61B5/055G01R33/3415G01R33/3628G01R33/3642G01R33/3657G01R33/3692
    • A magnetic resonance system that has a magnet system that generates magnetic fields in an excitation region, allowing nuclei in an examination subject in the excitation region to be excited to emit a magnetic resonance signal. A reception antenna device with multiple local coils for reception of the magnetic resonance signals is arranged in proximity to the examination subject, and has a base part and an attachment part. The attachment part can be placed on the base part such that the examination subject is located between the base part and the attachment part (6). The multiple local coils are respectively connected with an evaluation device for evaluation of magnetic resonance signals. To simply and reliably couple the antenna devices to an evaluation device with optimally few electrical conductors being located in the excitation region, the multiple local coils in the attachment part are respectively connected with the evaluation device via a base coupling element that is arranged at a predetermined base part location on the base part and an attachment coupling element is arranged at a predetermined attachment part location on the attachment part. The magnetic resonance signal received by the local coil can be fed to the evaluation device via the attachment coupling element and the base coupling element and as long as the attachment part is placed on the base part.
    • 一种磁共振系统,其具有在激励区域中产生磁场的磁体系统,其允许励磁区域中的检查对象中的核被发射出磁共振信号。 具有用于接收磁共振信号的多个本地线圈的接收天线装置布置在检查对象附近,并且具有基部和附接部。 安装部可以放置在基部上,使检查对象位于基部与安装部(6)之间。 多个本地线圈分别与用于评估磁共振信号的评估装置连接。 为了将天线装置简单且可靠地耦合到评估装置,其中最佳较少的电导体位于激励区域中,附件部分中的多个局部线圈分别经由基本耦合元件与评估装置连接,该基座耦合元件布置在预定的 在基部上的基部位置和附接联接元件布置在附接部分上的预定的附接部位。 由本地线圈接收的磁共振信号可以通过附接联接元件和基座联接元件被馈送到评估装置,并且只要将附接部件放置在基部上即可。
    • 45. 发明授权
    • Method for operating a magnetic resonant imaging tomography apparatus
    • 用于操作磁共振成像测量装置的方法
    • US5162730A
    • 1992-11-10
    • US611677
    • 1990-11-13
    • Franz SchmittHubertus Fischer
    • Franz SchmittHubertus Fischer
    • G01R33/561
    • G01R33/5615G01R33/5616
    • A method, in the form of a pulse sequence for operating a magnetic resonance imaging tomography apparatus according to a modification of the echo planar method includes the generation of a read-out gradient consisting of sub-pulses having reversing polarity, the read-out gradient being activated in each scan after an RF excitation. A phase coding gradient, also consisting of a number of sub-pulses, is activated at each polarity change of the read-out gradient. The sub-pulses of the phase coding gradient have a polarity which alternates from sub-pulse to sub-pulse, and an amplitude-time area which increases in steps. An improved signal-to-noise ratio is achieved with this pulse sequence and N/2 ghosts are avoided.
    • 根据回波平面方法的修改的用于操作磁共振成像断层摄影装置的脉冲序列形式的方法包括产生由具有反向极性的子脉冲,读出梯度 在RF激发后在每次扫描中被激活。 在读出的梯度的每个极性变化下激活也由多个子脉冲组成的相位编码梯度。 相位编码梯度的子脉冲具有从子脉冲到次脉冲交替的极性,以及逐步增加的幅度 - 时间区域。 通过该脉冲序列实现改善的信噪比,并避免N / 2个重影。