Department of Biomedical Engineering, University of Florida, Gainesville, Florida 32611, USA.
Opt Lett. 2013 Aug 1;38(15):2930-3. doi: 10.1364/OL.38.002930.
Recently, intensive research has been conducted to accelerate the development of photoacoustic (PA) imaging modality for biomedical applications. The use of acoustic lenses to collect ultrasound signals is of great interest. This Letter presents the design and fabrication of a liquid acoustic diverging lens, which can enlarge the acceptance angle of an ultrasound transducer. This lens possesses an inherent advantage of low acoustic impedance and the convenience to be attached to or detached from a commercial flat transducer. Phantom experiments have been carried out to demonstrate the improvement of using such a liquid lens over using a bare transducer for PA tomography.
最近，人们积极开展研究工作，以加速光声（PA）成像模式在生物医学中的应用。利用声透镜来收集超声信号引起了广泛关注。本文设计并制作了一种液体声发散透镜，可以增大超声换能器的接收角度。该透镜具有低声阻抗的固有优势，并且便于与商用平面换能器连接或分离。通过体模实验，证明了在 PA 层析成像中使用这种液体透镜比使用裸换能器具有更好的效果。
