Assisting apparatus for assisting a user during an interventional procedure

An assisting apparatus for assisting a user in moving an insertion element to be inserted into an object to a target element within the object, the assisting apparatus comprising:

• a tangible, non-transitory computer readable medium that stores instructions, which when executed by a processor, causes the processor to:
• provide an object image showing at least a part of the object, wherein a target element within the object is invisible in the object image;
• generate a target element representation representing the target element within the object in a three-dimensional position of the target element and a three-dimensional orientation of the target element and with a size of the target element based on a target element image, wherein the target element includes at least one opening;
• generate the target element representation including at least one ring representing the at least opening of the target element within the object in the three-dimensional position, the three-dimensional orientation and size of the at least one opening of the target element;
• and
• track a three-dimensional position of the insertion element within the object, while the insertion element is moved to the target element, and generate at least one ring representing the at least one opening of the insertion element,
• wherein:
• the insertion element is invisible in the object image, and the tracked three-dimensional position of the insertion element has at least one opening;
• and
• a display for displaying the at least one ring of the target element representation and the at least one ring representing the at least one opening of the insertion element on the object image.