Radiation therapy system, control method for controlling medical device, and controller for controlling medical device

A control method for controlling a medical device, the method comprising:

• receiving, by a control module, initial sensed values from a flexible pressure sensing matrix;
• receiving, by the control module, current sensed values from the flexible pressure sensing matrix;
• and
• determining whether an object on the flexible pressure sensing matrix has moved or rotated, wherein
• if the object has moved, calculating, by the control module according to the initial sensed values and the current sensed values and according to a comparison table, an amount of movement or an amount of rotation of the object or an amount of displacement of a target region of the object;
• and
• transmitting a warning signal to the medical device to suspend treatment when the amount of movement or the amount of rotation of the object or the amount of displacement of the target region exceeds a preset amount.

A controller for controlling a medical device, the controller coupled to the medical device and a flexible pressure sensing module, the controller comprising:

• a data input module receiving sensed value from the flexible pressure sensing module;
• and
• a control module coupled to the data input module;
• wherein:
• the control module receives initial sensed values and current sensed values from the flexible pressure sensing module through the data input module;
• the control module calculates an amount of movement or an amount of rotation of an object on the flexible pressure sensing module or an amount of displacement of a target region of the object according to the initial sensed values and the current sensed values and according to a comparison table;
• the control module determines whether the amount of movement or the amount of rotation of the object or the amount of displacement of the target region exceeds a preset amount;
• and
• the control module transmits a warning signal to the medical device when the amount of movement or the amount of rotation of the object or the amount of displacement of the target region exceeds the preset amount.