SYSTEM AND METHOD FOR POSITIONING A PATIENT

摘要

System (1) for positioning a patient relative to patient couch (2) and to a radiation treatment and/or imaging device, particularly to a linac and/or in the context of tomotherapy, comprising: A movable patient couch (2) with first position sensing means (4) for acquiring data related to the spatial position of a patient in relation to the patient couch (2), with the patient and the patient couch (2) having allocated separated frames of reference; a computing device for evaluating the data acquired by the first position sensing means (4), the computing device being adapted to derive information for positioning the patient with respect to the patient couch (2) from the data and to define an integrated single patient-and-couch-system frame of reference from the former separated frames of reference of the patient and the patient couch; and the computing device for evaluating further data acquired by the first position sensing means (4) and/or by second position sensing means (4a), the further data being related to the spatial position of the patient-and-couch system relative to the radiation treatment and/or imaging device and the computing device adapted to derive information for positioning the patient-and-couch-system frame of reference relative to a frame of reference of the radiation treatment and/or imaging device from the further data so that the planned treatment and/or imaging can be performed.