公开(公告)号：WO2004055524A2

公开(公告)日：2004-07-01

申请号：PCT/IB0305603

申请日：2003-12-02

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  WEISS STEFFEN

Inventor： WEISS STEFFEN

IPC: G01R33/28 ,  G01R

CPC classification number: G01R33/285

Abstract: The invention relates to a method of determining the position of an object, such as for example a medical intervention instrument, located in the examination area of an MR device. For this purpose, a high-frequency magnetic field is generated in the examination area, which high-frequency magnetic field runs essentially parallel to a main magnetic field that is active at the same time. In the process, a component of the high-frequency magnetic field that is perpendicular to the main magnetic field is produced in the vicinity of conversion means fitted on the object, on account of which perpendicular component of the high-frequency magnetic field a nuclear resonance signal is excited. In conjunction with a gradient field, the nuclear resonance signal is detected and evaluated, so that the position of the object can be determined. Furthermore, the invention relates to an MR device and to specific components for carrying out the method.

Abstract translation: 本发明涉及一种确定位于MR装置的检查区域中的物体（例如医疗介入器械）的位置的方法。 为此，在检查区域产生高频磁场，该高频磁场基本上平行于同时有效的主磁场。 在该过程中，在安装在物体上的转换装置附近产生垂直于主磁场的高频磁场的分量，由于高频磁场的垂直分量为核共振 信号激动 结合梯度场，检测和评估核共振信号，从而可以确定物体的位置。 此外，本发明涉及MR装置和用于执行该方法的具体部件。