Detection of foreign objects in intraoperative images

A non-transitory computer-readable storage medium storing a program, that when executed on at least one processor of a computer or when loaded onto the at least one processor of the computer, causes the computer to perform a method to detect at least one foreign object in one or more intraoperative images, the method comprising:

• acquiring at least one intraoperative image of at least a part of a patient's body undergoing a medical procedure;
• calculating or providing expected image content of the acquired intraoperative image based on data characterizing the patient and/or the medical procedure;
• and
• comparing the acquired intraoperative image with the calculated/provided expected image content thereby automatically detecting the at least one foreign object in the intraoperative image.

A medical image analysis system comprising:

• an image acquisition unit which is configured to acquire at least one intraoperative image of at least a part of a patient's body undergoing a medical procedure;
• and
• a processing unit which is configured to:
• calculate or provide expected image content of the acquired intraoperative image based on data characterizing the patient and/or the medical procedure;
• and
• compare, in a calculative manner, the acquired intraoperative image with the calculated/provided expected image content thereby automatically detecting the at least one foreign object in the intraoperative image.