Patent ID: 8335554

Claim:
A radio frequency unit, comprising: (i) a magnetic resonance imaging device comprising a radio-frequency monitoring coil, the radio-frequency monitoring coil measuring a temperature T 1 at a selected location of a mammalian body and operating at a frequency v 1 , wherein the frequency v 1 is a Larmor frequency of a 1 H nucleus and is between 120 and 130 MHz, (ii) one or more radio-frequency focusing coils delivering focused energy to said selected location of said mammalian body and raising the temperature T 1 thereof, said one or more radio-frequency focusing coils comprising at least two channels and operating at a frequency v 2 at least 50 kHz apart and at most 25000 kHz apart from the frequency v 1 of said radio-frequency monitoring coil, and (iii) a controller modulating said focused energy delivered by said one or more radio-frequency focusing coils as a function of said temperature T 1 to reach and maintain a predefined temperature T p above a normal mammalian body temperature T b .