Triggered treatment systems and methods

A radiation therapy method comprising:

• loading a planning image of a target in a human;
• monitoring the position of the target;
• computing an occurrence of substantial alignment between the position of the target and the target of the planning image;
• and
• after the computing, triggering a beam of radiation to deliver at least 4 grays within a second to the target.

A radiation therapy method comprising:

• loading a planning image of a target in a human;
• monitoring the position of the target;
• computing an occurrence of substantial alignment between the position of the target and the target of the planning image;
• and
• after the computing, triggering a beam of radiation to deliver at least 20 grays within a second to the target.

A radiation therapy method comprising:

• loading a planning image of a target in a human;
• monitoring the position of the target;
• computing an occurrence of substantial alignment between the position of the target and the target of the planning image;
• and
• after the computing, triggering a beam of radiation to deliver at least 40 grays within a second to the target.