3D ultrasound imaging by synthetic transmit aperture beamforming using a spherically curved array transducer
3D ultrasound imaging by synthetic transmit aperture beamforming using a spherically curved array transducer
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DOI：
10.35848/1347-4065/ac51c1
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发表时间：
2022-07-01
影响因子：
1.5
通讯作者：
Saijo, Yoshifumi
中科院分区：
文献类型：
--
作者：
Hayashi, Eiki;Kanno, Naoya;Saijo, Yoshifumi
皮肤循环可视化在皮肤保健领域具有重要意义。我们开发了一种三维（3D）光声（PA）成像系统，该系统使用球形弯曲阵列换能器，可以可视化皮肤层中的微尺度循环，但微血管周围的解剖信息有限。为了提供这样的解剖信息，本研究旨在设计一个高质量和高速超声（US）成像框架，特别是球面阵列换能器。通过对点目标和铜线目标三维图像的空间分辨率和均匀性进行评价，测试了三种合成发射孔径（STA）传输方式，即全单元、外轨道和内轨道。结果表明，全元素和外轨道STA方法可以提供均匀清晰的三维图像。此外，与全单元STA相比，外轨道STA传输次数更少，可用于实现实时、高分辨率3D PA/US成像。
Visualization of dermal circulation is important in the field of skin healthcare. We have developed a three-dimensional (3D) photoacoustic (PA) imaging system using a spherically curved array transducer that can visualize the microscale circulation in the skin layers, but limited anatomical information was available around the microvasculature. To provide such anatomical information, this study was aimed at devising a high-quality and high-speed ultrasound (US) imaging framework, particularly, for the spherical array transducer. We tested three synthetic transmit aperture (STA) methods, all-elements, outer-track, and inner-track, for transmission by evaluating the spatial resolution and uniformity of 3D images of point and copper-wire targets. The results demonstrated that the all-elements and outer-track STA methods could provide uniform and clear 3D images. In addition, the outer-track STA could be performed with fewer transmissions than the all-elements STA, and it will be useful for realizing real-time, high-resolution 3D PA/US imaging.