Patent ID: 7554090

Claim:
A method of dose-guided radiotherapy for a patient having an identified radiotherapy target, which radiotherapy is administered in a plurality of doses within a single session, comprising the steps of: providing a radiation detecting array of radiation-sensitive detectors for the remote measurement of real-time dose pattern at the radiation detecting array; providing a radiation source for emitting radiation along a treatment path through the patient to the identified radiotherapy target; placing the radiation detecting array (a) within the patient along the treatment path before or after the identified radiotherapy target or (b) exterior to the patient's body on the treatment path; generating a predicted dose pattern of radiation at the placed radiation detecting array; emitting radiation along the treatment path through the patient's body to the array to receive the real-time dose pattern; comparing the predicted dose pattern of radiation to the real-time dose pattern at the radiation detecting array during said session to determine coincidence of radiation with the identified radiotherapy target in the patient, and gating the radiation source responsive to the comparing of the predicted dose pattern of radiation to the real-time dose pattern at the radiation detecting array.