INSIGHTEC’S MRgFUS TECHNOLOGY
MR guided Focused Ultrasound combines two proven technologies - High intensity focused ultrasound and Magnetic Resonance Imaging (MRI).
Ultrasound is sound waves with frequencies which are higher than those audible to humans. The frequencies used for diagnostic medical imaging are generally in the range of 1 to 18 MHz. With INSIGHTEC technology, ultrasound is used therapeutically. High intensity focused ultrasound energy generates heat at a focal point of up to 85○C to ablate targeted tissue. The frequencies used for therapeutic ultrasound are in the range of 220KHz to 680KHz.
Magnetic Resonance Imaging (MRI)
Magnetic Resonance Imaging (MRI) is a medical imaging technique that uses magnetic fields and radio waves to form images of the body. The technique is widely used in hospitals for medical diagnosis, staging of disease and follow-up with no exposure to ionizing radiation. An MRI advantage is that it can also provide a temperature measurement (Thermometry) of a scanned organ. INSIGHTEC’s MRgFUS uses focused ultrasound to ablate the target tissue under the image and temperature guidance of the MR. This enables the physician to perform a safe and effective non-invasive treatment with little to no harm to the surrounding tissue and with minimal side effects.
HOW IT WORKS
A multi-element phased array transducer adjusts to a focal point electronically. The treating physician defines the region of treatment and the system creates a treatment plan accordingly. During treatment, up to 1000 rays of ultrasound are emitted to a focal point. While transforming energy to heat, the ultrasound rays ablate targeted tissue. Guided by MRI, a clear vision of the treated tissue is acquired. Furthermore, thermal data is analyzed to determine the cumulative thermal impact on the tissue. If necessary, parameters are adjusted to ensure a safe and effective response.