초록 ▼

A radiation treatment apparatus (10) including a stand (12), a gantry (14) movably supported on the stand (12), the gantry (14) having a vertical section (16) and a generally linear cantilevered strut section (18), the cantilevered strut section (18) having a supported end adjacent the vertical sect

A radiation treatment apparatus (10) including a stand (12), a gantry (14) movably supported on the stand (12), the gantry (14) having a vertical section (16) and a generally linear cantilevered strut section (18), the cantilevered strut section (18) having a supported end adjacent the vertical section (16) and a projecting end opposite the supported end, a substantially linear particle accelerator (30) disposed within and longitudinally supported in generally parallel relationship with the cantilevered strut section (18), the accelerator (30) having a predetermined injection point (32) where particles are launched in the accelerator and a predetermined exit point (34) where the particles are discharged from the accelerator, a treatment head (22) coupled to the remote end of the cantilevered strut section proximate the exit point (34), the treatment head (22) for emitting a radiation beam (27), and a tuneable stiffening apparatus (40) attached to the accelerator (30) for substantially maintaining alignment between accelerated particle beam (27) and the bending magnet (35) and target (39) supported by the strut section (18).

대표청구항 ▼

[ What is claimed is:] [11.] A method for improving the rotational flatness in a radiation treatment apparatus having a stand, a gantry movably supported on said stand, said gantry having a vertical section and a cantilevered strut section, and a substantially linear particle accelerator for generat

[ What is claimed is:] [11.] A method for improving the rotational flatness in a radiation treatment apparatus having a stand, a gantry movably supported on said stand, said gantry having a vertical section and a cantilevered strut section, and a substantially linear particle accelerator for generating a radiation beam disposed within said cantilevered strut section, comprising:(a) providing a tuneable stiffening apparatus;(b) attaching said tuneable stiffening apparatus to said accelerator;(c) attaching said stiffening apparatus to said cantilevered strut section; and(d) tuning said stiffening apparatus to vary the stiffness between said strut section and said accelerator.