Synthetic aperture ultrasound imaging
Synthetic aperture ultrasound imaging
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DOI：
10.1016/j.ultras.2006.07.017
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发表时间：
2006-12-22
期刊：
影响因子：
4.2
通讯作者：
Pedersen, Morten Hogholm
中科院分区：
文献类型：
--
作者：
Jensen, Jorgen Arendt;Nikolov, Svetoslav Ivanov;Pedersen, Morten Hogholm
本文介绍了合成孔径成像（SA）在医学超声中的应用。SA成像是与当今商业系统的根本突破，在商业系统中，图像是按顺序一次获取一条图像线。这严格限制了帧率和获取足够数据量以进行高精度流量估计的可能性。这些缩窄可以通过SA显像解除。这里的数据是从多个发射的各个方向同时获得的，并且可以根据这些数据重建完整的图像。本文论证了SA成像的诸多优点。由于数据集完整，可以同时进行动态发射和接收聚焦，以提高对比度和分辨率。也可以通过在超声波传输过程中使用编码来提高穿透深度。矢量流成像的数据集可以使用短成像序列获得，从而可以估计正确的速度大小和角度。通过实验超声扫描仪RASMUS，我们将展示一些幻影和体内SA图像的例子，以展示SA成像的许多好处。(c) 2006 Elsevier b.v.保留所有权利。
The paper describes the use of synthetic aperture ( SA) imaging in medical ultrasound. SA imaging is a radical break with today's commercial systems, where the image is acquired sequentially one image line at a time. This puts a strict limit on the frame rate and the possibility of acquiring a sufficient amount of data for high precision flow estimation. These constrictions can be lifted by employing SA imaging. Here data is acquired simultaneously from all directions over a number of emissions, and the full image can be reconstructed from this data. The paper demonstrates the many benefits of SA imaging. Due to the complete data set, it is possible to have both dynamic transmit and receive focusing to improve contrast and resolution. It is also possible to improve penetration depth by employing codes during ultrasound transmission. Data sets for vector flow imaging can be acquired using short imaging sequences, whereby both the correct velocity magnitude and angle can be estimated. A number of examples of both phantom and in vivo SA images will be presented measured by the experimental ultrasound scanner RASMUS to demonstrate the many benefits of SA imaging. (c) 2006 Elsevier B. V. All rights reserved.