Monday, January 31, 2011

Shielding enhances MRI-irradiation system

    A combined MRI-irradiation system is described by ViewRay (Oakwood Village, OH) in international patent application WO/2011/008969. The instrument includes one or more linacs that emit therapeutic radiation beams. The MRI part comprises a split magnet system with two main magnets separated by gap. A gantry is positioned in the gap between the MRI magnets to support the linac(s). This gantry can rotate independently of the MRI and can angularly reposition the linac. The filing provides details of magnetic shielding that can shield the linac from the magnetic field generated by the MRI magnets, as well as RF shielding that screens the MRI from RF radiation from the linac.

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