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发明授权
CN101534715B 在(Xper)CT下的针引导过程中的金属伪影预防 失效 - 权利终止

在(Xper)CT下的针引导过程中的金属伪影预防
摘要：
本发明涉及用于预防当金属针存在于扫描视场中时，在活检过程中由计算机断层摄影扫描产生的金属伪影的方法和设备。预先确定金属针的方向和电磁场的方向。针对电磁场的确定，考虑电磁场的源位置和探测器位置。当所确定的电磁场的方向和金属针的方向互相对应时，可以警告用户。
摘要（英）：

The present invention relates to a method and device for preventing metal artefacts computer tomography scans made during biopsy taking, when a metal needle is present in the field of view of a scan. The direction of the metal needle and the direction of the electro-magnetic field are determined in advance. For the determination of the electro-magnetic field a position of a source of the electro-magnetic field a position of a detector are considered. The user may be warned, when the determined direction of the electro-magnetic field and of the direction of the metallic needle correspond to each other.

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