Low-artifact and long depth of field photoacoustic microscopy using a Gaussian-weighted annular array
Low-artifact and long depth of field photoacoustic microscopy using a Gaussian-weighted annular array
复制标题
使用高斯加权环形阵列的低伪影和长景深光声显微镜
DOI:
10.7567/1882-0786/ab0a92
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发表时间:
2019-04
影响因子:
2.3
通讯作者:
Xiaojun Liu
中科院分区:
文献类型:
--
作者:
Zhipeng Liu;Chao Tao;Xiaojun Liu
A Gaussian-weighted annular ultrasound array is proposed to reduce artifacts and extend the depth of field of acoustical-resolution photoacoustic microscopy. By applying Gaussian weighting on each ring, the annular array suppresses the side lobes by about 18 dB compared to a conventional focused transducer, and “X”-shaped artifacts are significantly reduced in the photoacoustic images. Additionally, by controlling the delay time of each ring, the annular array can dynamically focus at different depths, thus achieving a long depth of field. Experiments are performed which demonstrate that the proposed scheme can significantly improve the imaging quality of photoacoustic microscopy.
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