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Focused ultrasound surgery guided by MRI

Kullervo Hynynen
From: Science & Medicine: Volume 3 Number 5: Page 62 (October 1996)

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Abstract: Because it is sensitive to temperature changes in tissue, MRI is an effective method for guiding and controlling ultrasound pulses. Ultrasound beams heat tissue, but the objective of focused ultrasound therapy is tisssue destrucftion, more like surgery than hyperthermia, so it might be useful for eradicating tumors in organs accessible to ultrasound or for coagulating blood vessels. A prototype designed for breast tumor surgery is now being tested clinically. Multiple ultrasound transducers in a phased array would permit focused ultrasound surgery to be used for sizable tumors.

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