A high-precision angular control system for HIFU calibration.

Area of Science:

• Biomedical Engineering
• Acoustic Engineering
• Control Systems

Background:

• High intensity focused ultrasound (HIFU) requires precise angular calibration for accurate treatment delivery.
• Existing calibration systems may lack the necessary precision and reproducibility.

Purpose of the Study:

• To design and validate a high-precision angular position control system for HIFU calibration.
• To compare the system's performance against commercial alternatives.

Main Methods:

• A novel control system combining worm and belt gear mechanisms for dual-axis angular control.
• Alignment verification through simulation and experimental data comparison.
• Testing with three distinct HIFU transducers and two hydrophone types.

Main Results:

• Achieved high-precision angular alignment with accuracy below 0.01 radians.
• Demonstrated robust reproducibility across different transducer and hydrophone configurations.
• The proposed system exhibited superior performance compared to a commercial system.

Conclusions:

• The developed system offers a precise and reproducible solution for HIFU angular calibration.
• This advancement can enhance the accuracy and reliability of HIFU therapies.