Transcranial focused ultrasound surgery

Area of Science:

• Neurosurgery
• Medical Imaging
• Ultrasound Technology

Background:

• High-intensity focused ultrasound (HIFU) has rapidly advanced for noninvasive neurosurgery.
• Magnetic resonance imaging (MRI) is crucial for planning, guiding, and evaluating ultrasound treatments.
• Transcranial ultrasound therapies require precise structural identification and thermal monitoring to ensure safety.

Purpose of the Study:

• To describe the physics of ultrasound transmission through the skull.
• To detail technological advancements overcoming skull-imposed physical limits for ultrasound.
• To explain the integration of MRI guidance and monitoring in ultrasound neurosurgery.

Main Methods:

• Review of the physics of ultrasound propagation through bone.
• Description of technological innovations for transcranial ultrasound.
• Integration of magnetic resonance imaging (MRI) for guidance and monitoring.
• Overview of studies using MRI-compatible hemispherical transducer arrays.

Main Results:

• Ultrasound can be transmitted through the skull for therapeutic applications.
• Technological advancements have circumvented physical limitations imposed by the skull.
• MRI integration enables safe and effective image-guided ultrasound neurosurgery.
• Ongoing studies demonstrate the feasibility of MRI-compatible transducer arrays.

Conclusions:

• Image-guided noninvasive ultrasound neurosurgery is rapidly developing.
• MRI plays a vital role in the safety and efficacy of these procedures.
• Continued research and technological integration promise further advancements in the field.