SYSTEM FOR MONITORING THE GEOMETRY OF A RADIATION TREATMENT APPARATUS, TRACKABLE ASSEMBLY, PROGRAM PRODUCT, AND RELATED METHODS

摘要

A system (30) to monitor a geometry of a treatment apparatus (31), an apparatus (51), a trackable assembly (43), program product (81), and methods are provided. The system (30) includes a treatment apparatus (31) having a radiation emitter (33), a rotating assembly (35) controlled by a controller (39), and an application computer (41), which provides treatment delivery instructions to the controller (39). The system (30) can also include a trackable assembly (43) connected to the rotating assembly (35) and having a fixedly connected first trackable body (45) which functions as a reference fixture and a pivotally connected second trackable body (49) which provides data used to determine a rotation angle of the rotating assembly (35). The system (30) also includes an apparatus (51) to track a trackable body which has a trackable body detector (53) to detect a position of the indicators (47) carried by the first and the second trackable bodies (45), (49) and a determiner (55) to determine and verify the location of the origin (57) of an isocenter coordinate system and to determine rotational path data about the rotating assembly (35).