Surgeons at the Mayo Clinic have succeeded in using lasers, guided by magnetic resonance imaging (MRIAlso: nuclear magnetic resonance imaging (NMR). Magnetic Resonance Imaging is a non-invasive imaging procedure that utilizes strong magnets and radio waves to visualize tissues. Subtle differences in the ways that the tissues and organs absorb and reflect the waves enable the detection of many different disorders.), to remove tumors as large as 2 inches. The laser is used to precisely heat the tumor, killing the cancer and sparing healthy tissue.
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