A high-precision angular control system for HIFU calibration

• Published in: Ultrasonics Vol. 53; no. 1; pp. 45 - 52
• Main Authors: Park, Donghee, Park, Jingam, Kim, Hansung, Kim, Chi Hyun, Han, Tae-Young, Park, Hyunjin, Seo, Jongbum
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.01.2013
• Subjects: Acoustic field; Calibration; Equipment Design; Equipment Failure Analysis; Equipment Safety; High intensity focused ultrasound; High precision alignment; High-Intensity Focused Ultrasound Ablation - instrumentation; Transducers; Ultrasound field measurement; Ultrasound field measurement; High precision alignment; High intensity focused ultrasound; Acoustic field
• ISSN: 0041-624X; 1874-9968
• DOI: 10.1016/j.ultras.2012.03.012

► We designed a high precision angular alignment system with a proper protocol for ultrasound field measurement. ► We examined the performance of the proposed design and compared it with that of commercial equipment. ► The obtained accuracy of alignment error with the proposed system was less than 0.01radian. A design of high-precision angular position control system for calibrating high intensity focused ultrasound (HIFU) is presented with alignment procedures. Two independent angular controls are achieved by combining a worm gear and a belt gear system. The proposed system verifies alignment by comparing simulation data and experimental data with three different transducers and two different types of hydrophones. The performance of the proposed system is compared to that of a commercial system. The results indicate that the proposed system provides high precision angular alignment (e.g., <0.01radians) with robust reproducibility regardless of the hydrophone type.