"SIMUS: an open-source simulator for ultrasound imaging" Garcia et al. Sep 2021

[mxochicale]

SIMUS: an open-source simulator for ultrasound imaging. Part I: theory & examples

Computational ultrasound imaging has become a well-established methodology in the ultrasound community. Simulations of ultrasound sequences and images allow the study of innovative techniques in terms of emission strategy, beamforming and probe design. There is a wide spectrum of software dedicated to ultrasound imaging, each having its specificities in its applications and in the numerical method. I describe in this two-part paper a new ultrasound simulator (SIMUS) for Matlab, which belongs to the Matlab UltraSound Toolbox (MUST). The SIMUS software is based on far-field and paraxial approximations. It simulates acoustic pressure fields and radiofrequency RF signals for uniform linear or convex probes. SIMUS is an open-source software whose features are 1) rapidity, 2) ease of use, 3) frequency domain, 4) pedagogy. The main goal was to offer a comprehensive turnkey tool, along with a detailed theory for pedagogical and research purposes. This first part of the paper describes in detail the underlying linear theory of SIMUS and provides examples of simulated acoustic fields and ultrasound images. The second part is devoted to the comparison of SIMUS with popular software: Field II, k-Wave, and the Verasonics simulator. The Matlab open codes for the simulator SIMUS are distributed under the terms of the GNU Lesser General Public License, and can be downloaded from this https URL. https://arxiv.org/abs/2102.02738 https://scholar.google.com/scholar?oi=bibs&hl=en&cites=769158789450633564

SIMUS: an open-source simulator for ultrasound imaging. Part II: comparison with three popular simulators

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 linear equations derived from far-field and paraxial approximations. In this article (part II), we illustrate how SIMUS compares with three popular ultrasound simulators (Field II, k-Wave, 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 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 on a par with Field II and k-Wave for realistic ultrasound simulations. https://arxiv.org/abs/2103.05521 https://scholar.google.com/scholar?oi=bibs&hl=en&cites=1734768811718767103

MUST — Matlab ultrasound toolbox

Post-process experimental RF and I/Q ultrasound data Simulate acoustic pressure fields and ultrasound signals for uniform linear and convex arrays Make movies of wave propagation and backscattering Well-documented user-friendly Matlab functions 100% open-source Fast, easy and parallelizable www.biomecardio.com damien.garcia@creatis.insa-lyon.fr
damien.garcia@inserm.fr

• https://www.biomecardio.com/MUST/