Digital tools designed to monitor patients’ position and movement, particularly during radiotherapy or X-ray examinations. The technology automates parts of the flow. A system that tracks a patient’s position before and during radiation therapy, to aid in setup and treatment accuracy. AlignRT uses 3D stereo cameras to track the skin’s surface and compare it to the ideal position in the treatment plan with submillimetric accuracy for all patient skin tones, couch, and gantry angles. It can automatically signal for the treatment delivery system to pause the radiation beam if the patient moves out of position. The system can also be used in respiratory techniques such as deep breath hold.