Magnetic resonance surgery using heat waves produced with a lase

Details Magnetic resonance surgery using heat waves produced with a lase Magnetic resonance surgery using heat waves produced with a lase

1993-09-24

1994-11-29

Pfaffle, K. M.

Surgery

Truss

Pad

1286535, 606 15, 606 28, 607 89, 607 96, 607100, 607113, A61B 5055

Patent

active

053680316

ABSTRACT:
Surgery is performed with pulsed heat means that selectively destroys tissue in a region within a patient. The size of the region destroyed is dependent upon the frequency of the pulses of the pulsed heat means and thermal conductivity of the tissue of the patient. The pulsed heat means can be a coherent optical source that is guided by laser fiber to the tissue to be destroyed. In another embodiment the pulsed heat means is a focussed ultrasound transducer that dissipates ultrasonic energy at a focal point within the region of tissue to be destroyed. A magnetic resonance imaging system employing a temperature sensitive pulse sequence creates an image of the tissue and the region being heated to allow a surgeon to alter the position of the pulsed heat means or vary the pulse frequency.

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