인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Acoustic focusing is one of the fundamental components of ultrasound systems for both diagnostic and therapeutic purposes. Accordingly, each pulser is dedicated to controlling the active elements of the ultrasound transducer with different time delays to achieve precise focal positioning. However, mapping each element to a dedicated pulser linearly increases hardware complexity, which poses significant challenges in the recent adoption of large-scale element arrays such as two-dimensional arrays. In this paper, we propose a pulser quantization method that exploits the symmetricity of focusing delays in two-dimensional array–based systems while accounting for the finite sampling period of the pulser clock. The impact of pulser quantization on focusing performance is systematically analyzed, and an effective approach to reduce the number of required pulsers while preserving focusing capability is presented. By incorporating allowable focusing error for localized therapeutic applications, the proposed method achieves pulser count reductions of approximately 50%, and up to 87% when therapeutic focusing tolerance is considered, suggesting applicability to two-dimensional array–based 3D ultrasound systems and portable ultrasound devices.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.