Position determination system

A position determination method for determining a position of a catheter, which is located within a subject, in an image of the subject during an interventional procedure and for being used by a position determination system, the method comprising:

• generating an image of the subject by an imaging device, before the interventional procedure is performed, at an imaging site,
• generating light markers at locations on a surface of the subject, before the interventional procedure is performed, by an imaging light markers generation device at the imaging site,
• generating light markers at the locations on the surface of the subject by an interventional light markers generation device at an interventional site,
• determining the position of the catheter within the subject during the interventional procedure by a localization device at the interventional site,
• providing an imaging spatial relation between the imaging device and the imaging light markers generation device and an interventional spatial relation between the localization device and the interventional light markers generation device by a spatial relations providing unit, and
• determining the position of the catheter within the generated image based on the position of the catheter determined by the localization device and the imaging and interventional spatial relations by a position determination unit.

A localization computer program for localizing a catheter within a subject during an interventional procedure, the localization computer program comprising program code in a non-transitory computer readable medium, which when executed by a computer causes:

• a localization device of a localization system to determine a position of the catheter during the interventional procedure;
• an imaging system, which comprises an imaging device configured for generating an image of the subject, before the interventional procedure is performed, at an imaging site, and an imaging light markers generation device configured for generating light markers at locations on a surface of the subject, before the interventional procedure is performed, at the imaging site a spatial relations providing unit of the localization system to provide an imaging spatial relation between the imaging device and the imaging light markers generation device of the imaging system and an interventional spatial relation between the localization device and the interventional light markers generation device of the localization system;
• and
• a position determination unit of the localization system to determine the position of the catheter within an image generated by the imaging device based on the position of the catheter determined by the localization device and the imaging and interventional spatial relations.