MRI integration with 3D phased array BSD-2000·3-D hyperthermia system

The 24 dipole phased array Sigma Eye hyperthermia applicator has been adapted for simultaneous operation with the Siemens Magnetom Open MRI System to provide a new noninvasive method to treat cancerous tumors with heat. The Sigma Eye/MR is capable of three dimensional focal energy steering and simultaneous operation within the MR. This effort required the use of special filtering, non-ferrous materials, and modifications of the Sigma Eye and the MR patient support cart. Phantom testing of the 3-D steering capabilities of the standard Sigma Eye and the MR compatible version showed similar behavior. Initial phantom and patient tests of simultaneous heating and imaging has shown simultaneous operation integration of the two systems to be compatible. The Sigma Eye operates at 100 MHz with the Siemens Magnetom Open 0.2 T MR operation at 8.25 MHz