High Quality Content by WIKIPEDIA articles! A hybrid operating room is a surgical theatre that is equipped with advanced medical imaging devices such as fixed C-Arms, CT scanners or MRI scanners. These imaging devices enable minimally-invasive surgery, that is less traumatic for the patient. Minimally invasive means that the surgeon does not need to cut the patient open completely in order to access the body part he wants to perform surgery on, but can insert catheters or endoscopes through small holes. Though imaging has been a standard part of the OR for a long time in the form of mobile C-Arms, ultrasound and endoscopy, these new minimally-invasive procedures require imaging techniques that can visualize smaller body parts such as really thin vessels in the heart muscle and can be facilitated through intraoperative 3D imaging.