CREANUIS: A Non-linear Radiofrequency Ultrasound Image Simulator

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• 作者：Fran?ois Varray ; Olivier Basset ; Piero Tortoli ; Christian Cachard
• 关键词：Ultrasound non-linearity ; Coefficient of non-linearity ; Non-linear propagation ; Radiofrequency image simulation
• 刊名：Ultrasound in Medicine and Biology
• 出版年：2013
• 出版时间：October, 2013
• 年：2013
• 卷：39
• 期：10
• 页码：1915-1924
• 全文大小：1731 K

文摘

Nonlinear ultrasound methods are widely used in clinical applications for tissue or contrast harmonic imaging. Accurate non-linear imaging simulation tools are required in research studies for the development of new methods. However, in existing simulators, the possible inhomogeneity of the coefficient of non-linearity, which is generally observed in tissue and in particular when contrast agents are involved, has not yet been implemented. This article describes a new ultrasound simulator, called CREANUIS, devoted to the computation of B-mode images where both linear and non-linear propagation in media is considered, with a possible inhomogeneous coefficient of non-linearity. The resulting fundamental images, based on a spatially variant and non-linear point spread function, are in accordance with those obtained through the reference linear FieldII simulator, with computation time reduced by a factor of at least 1.8. Non-linear images of media exhibiting inhomogeneous coefficients of non-linearity are also provided. The simulation software can be freely downloaded from our website.