Bernardus Hendrikus Wilhelmus Hendriks,Harold Agnes Wilhelmus Schmeitz
申请号：
US14369788
公开号：
US20140357989A1
申请日:
2012.12.24
申请国别(地区):
US
年份:
2014
代理人:
摘要：
The invention relates to a position determining apparatus (6) for determining the position of an interventional instrument (1) within a subject (4). A spatial relation between positions of a second part (3) of the interventional instrument outside the subject and a first part (2) of the interventional instrument within the subject is determined based on an actual image of the interventional instrument within the subject being preferentially an x-ray image and a provided position of the second part. Once the spatial relation has been determined, the position of the interventional instrument within the subject can be determined, while the interventional instrument is moved within the subject, based on the determined spatial relation and a determined actual position of the second part outside the subject, without necessarily acquiring a further actual image. This can allow for a reduction of a radiation dose, if rays are used for acquiring the actual image.
