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    • 3. 发明申请
    • MAGNETIC RESONANCE SAFETY MONITORING SYSTEMS AND METHODS
    • 磁共振安全监测系统及方法
    • US20100312091A1
    • 2010-12-09
    • US12808404
    • 2008-12-22
    • Sascha KruegerDaniel WirtzSteffen Weiss
    • Sascha KruegerDaniel WirtzSteffen Weiss
    • A61B5/055G08B23/00
    • G01R33/285G01R33/288
    • A magnetic resonance method comprises applying a radio frequency excitation in an examination region (14), measuring a magnetic resonance signal generated by the applied radio frequency excitation in a subject (16) in the examination region, monitoring a radio frequency parameter during the applying, and evaluating subject safety based on the monitoring. A magnetic resonance safety monitor (40) comprises an analyzer (42, 44, 46, 50) configured to (i) receive a radio frequency signal during magnetic resonance excitation, (ii) extract a radio frequency parameter from the received radio frequency signal, and (iii) evaluate subject safety based on the extracted radio frequency parameter, and a remediation module (54) configured to perform a remediation of the magnetic resonance excitation responsive to the evaluation (iii) indicating a potentially unsafe condition.
    • 磁共振方法包括在检查区域(14)中施加射频激励,测量由所述检查区域中的被检体(16)施加的射频激励产生的磁共振信号,在施加期间监视射频参数, 并根据监测评估受试者的安全性。 磁共振安全监视器(40)包括分析器(42,44,46,50),其被配置为(i)在磁共振激励期间接收射频信号,(ii)从所接收的射频信号中提取射频参数, 以及(iii)基于提取的射频参数来评估对象安全性;以及修复模块(54),其被配置为响应于指示潜在不安全状况的评估(iii)来执行磁共振激励的修复。
    • 6. 发明申请
    • TRANSMISSION LINE FOR USE IN MAGNETIC RESONANCE SYSTEM
    • 用于磁共振系统的传输线
    • US20100013484A1
    • 2010-01-21
    • US12520182
    • 2007-12-20
    • Daniel WirtzOliver LipsSascha KruegerBernd DavidSteffen Weiss
    • Daniel WirtzOliver LipsSascha KruegerBernd DavidSteffen Weiss
    • G01R33/44
    • G01R33/287G01R33/288
    • An electrically conductive transmission cable for supplying a DC signal safely to an electrical device in the presence of radio-frequency (RF) fields in a magnetic resonance (MR) is disclosed herein. The transmission cable comprises a transmission line (STL) comprising at least a first segment (S1) and a second segment (S2), wherein the first and second segments are electrically connected to each other by a reactive coupling unit (103), and a rectifier unit (101) connected to the transmission line and configured to extract the DC signal (203) from the modulated DC signal (201). The extracted DC signal may be supplied to an electrical device or used for cardiac pacing. The transmission cable finds application in auxiliary devices used in an MR environment, for example an interventional catheter with or without an active tracking circuit (301).
    • 本文公开了一种用于在磁共振(MR)中存在射频(RF)场的情况下将DC信号安全地提供给电气设备的导电传输电缆。 传输电缆包括至少包括第一段(S1)和第二段(S2)的传输线(STL),其中第一和第二段通过无功耦合单元(103)彼此电连接,并且 整流单元(101),连接到所述传输线并且被配置为从所述调制的DC信号(201)提取所述DC信号(203)。 所提取的DC信号可以被提供给电气设备或用于心脏起搏。 传输电缆可用于在MR环境中使用的辅助设备中,例如具有或不具有主动跟踪电路(301)的介入导管。