👉 Cathograph is a type of medical imaging device used to visualize internal structures and organs in the body. It works by using special light waves to create an image of the inside of the body, which can be transmitted through a catheter or tubing inserted into the patient's vein. The images are then captured on film and displayed on a monitor. Cathographs have been used for decades in various medical procedures such as imaging diagnostic tests, surgery planning, and anesthesia preparation.