The use of mechanically-representative phantoms is important for experimental validation in ultrasound imaging, elastography and image registration. This paper proposes a model to predict the elastic modulus of a soft tissue-mimicking phantom based on two very easily controllable parameters: gelatin concentration and refrigeration duration. The model has been validated on small and large-scale phantoms: it provides a good prediction of the elastic modulus in both cases (error<16.2%). The tissue-mimicking phantom is made following a low-cost and simple fabrication procedure using commercial household gelatin, with psyllium hydrophilic mucilloid fiber to obtain echogenicity. A large range of elastic properties were obtained (15kPa-100kPa) by adjusting the gelatin concentration between 5%(g/mL) and 20%(g/mL), and the refrigeration time of the sample between 2 hours and 168 hours, allowing to mimic normal and pathological human soft tissues. The phantom's acoustic properties (velocity, attenuation and acoustic impedance) are also assessed using the AIUM (American Institute of Ultrasound in Medicine) standard.

中文翻译：

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用于设计具有可调节弹性的模拟超音波幻影的软组织的预测模型。

机械代表模型的使用对于超声成像，弹性成像和图像配准中的实验验证很重要。本文提出了一种模型，该模型基于两个非常容易控制的参数（明胶浓度和冷藏持续时间）来预测模拟软组织的模型的弹性模量。该模型已在小型和大型模型上进行了验证：在两种情况下（误差<16.2％），它都能很好地预测弹性模量。模仿组织的模型是使用商用家用明胶通过低成本和简单的制造程序制成的，并以车前草亲水性胶体纤维来获得回声性。通过将明胶浓度调节在5％（g / mL）和20％（g / mL）之间，可以获得很大的弹性（15kPa-100kPa），样品的冷藏时间在2小时到168小时之间，可以模拟正常的和病理的人体软组织。体模的声学特性（速度，衰减和声阻抗）也使用AIUM（美国医学超声学会）标准进行评估。