High-Frequency Ultrasound Ablation in Neurosurgery

Area of Science:

• Neurosurgery
• Medical Imaging
• Acoustic Medicine

Background:

• Neurologic and psychiatric disorders present significant treatment challenges.
• Existing treatments may be invasive or have limited efficacy for certain conditions.

Purpose of the Study:

• To describe the principles and applications of modern transcranial MR-guided focused ultrasound (MRgFUS).
• To highlight MRgFUS as an incisionless ablative treatment for neurologic disorders.

Main Methods:

• Utilizes a hemispheric phased array of transducers to focus ultrasound waves.
• Employs real-time MR thermography for precise temperature monitoring during ablation.
• Achieves submillimeter targeting of cerebral tissue.

Main Results:

• MRgFUS enables selective destruction of targeted brain tissue.
• The procedure is incisionless, passing ultrasound waves through the skull.
• Real-time monitoring prevents overheating and brain damage.

Conclusions:

• High-intensity focused ultrasound (HIFU) is a safe and effective method for stereotactic ablations.
• MRgFUS is increasingly utilized for medication-refractory movement disorders and other neurologic conditions.