MONITORING OF SYSTEM LATENCY ERRORS IN RADIOTHERAPY FOR CANCER TREATMENT

Devices, systems and techniques are used for cancer treatment. An example control device may be configured to be communicatively coupled to a radiation source of a radiotherapy device and a position sensor of the radiotherapy device. The example control device may be used to calculate, for a sliding window of a radiotherapy treatment, a positional error between: a measured target position signal determined from a series of images and sampled at the acquisition times of the images, and an estimated target position signal. The example control device may generate a computer-executable instruction configured to alter the radiotherapy treatment in response to the positional error violating a threshold.