Cigier Amanda, Varray François, Garcia Damien
CREATIS: Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé, Lyon, France.
CREATIS: Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé, Lyon, France.
Comput Methods Programs Biomed. 2022 Jun;220:106774. doi: 10.1016/j.cmpb.2022.106774. Epub 2022 Mar 25.
Computational ultrasound imaging has become a well-established methodology in the ultrasound community. In the accompanying paper (part I), we described a new ultrasound simulator (SIMUS) for MATLAB, which belongs to the Matlab UltraSound Toolbox (MUST). SIMUS can generate pressure fields and radiofrequency RF signals for simulations in medical ultrasound imaging. It works in a harmonic domain and uses far-field and paraxial linear equations.
In this article (part II), we illustrate how SIMUS compares with other ultrasound simulators (Field II, k-Wave, FOCUS, and Verasonics) for a homogeneous medium. We designed different transmit sequences (focused, planar, and diverging wavefronts) and calculated the corresponding 2-D and 3-D (with elevation focusing) RMS pressure fields.
SIMUS produced pressure fields similar to those of Field II, FOCUS, and k-Wave. The acoustic fields provided by the Verasonics simulator were significantly different from those of SIMUS and k-Wave, although the overall appearance remained consistent.
Our simulations tend to demonstrate that SIMUS is reliable and can be used for realistic medical ultrasound simulations.
计算超声成像已成为超声领域中一种成熟的方法。在随附论文（第一部分）中，我们描述了一款适用于MATLAB的新型超声模拟器（SIMUS），它属于Matlab超声工具箱（MUST）。SIMUS能够生成压力场和射频（RF）信号，用于医学超声成像模拟。它在谐波域中工作，并使用远场和傍轴线性方程。
在本文（第二部分）中，我们展示了在均匀介质中SIMUS与其他超声模拟器（Field II、k-Wave、FOCUS和Verasonics）的比较情况。我们设计了不同的发射序列（聚焦、平面和发散波前），并计算了相应的二维和三维（带有仰角聚焦）均方根（RMS）压力场。
SIMUS生成的压力场与Field II、FOCUS和k-Wave的相似。尽管整体外观保持一致，但Verasonics模拟器提供的声场与SIMUS和k-Wave的显著不同。
我们的模拟倾向于表明SIMUS是可靠的，可用于实际的医学超声模拟。
