Attenuation Coefficients of the Individual Components of the International Electrotechnical Commission Agar Tissue-Mimicking Material.
Attenuation Coefficients of the Individual Components of the International Electrotechnical Commission Agar Tissue-Mimicking Material.
复制标题
国际电工委员会琼脂模拟组织材料各个成分的衰减系数。
DOI：
10.1016/j.ultrasmedbio.2018.06.004
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发表时间：
2018
影响因子：
2.9
通讯作者：
C. Moran
中科院分区：
文献类型：
--
作者：
A. Rabell;T. Anderson;S. Pye;C. Moran
组织模拟材料（TMMs）广泛用于质量保证（QA）模型，以评估超声扫描仪的性能。国际电工委员会（IEC）定义了tmm的声学参数（IEC, 2001）高达10 MHz。为了制造一种与小动物软组织在高频下的声学特性非常相似的TMM，需要对IEC琼脂-TMM配方中使用的每种单独成分的声学特性进行量化。本研究旨在评价IEC琼脂- tmm的整体衰减系数是否为其各成分衰减系数的线性和。用IEC琼脂- tmm配方中不同成分的组合制备了8批琼脂基材料。在个别混合物中使用的每种成分的百分比浓度与IEC配方中规定的百分比浓度相同。在12-50 MHz的超声频率范围内测量每个批次的衰减，并从其他批次的衰减值中减去琼脂成分的衰减值。然后对代表IEC琼脂-TMM中单个组分衰减的批量衰减值进行求和，得到的衰减值准确地再现了IEC琼脂-TMM的衰减。
Tissue mimicking materials (TMMs) are widely used in quality assurance (QA) phantoms to assess the performance of ultrasound scanners. The International Electrotechnical Commission (IEC) define the acoustic parameters of TMMs (IEC, 2001) up to 10 MHz. To manufacture a TMM that closely mimics the acoustical properties of small animal soft tissue at high frequencies, the acoustic properties of each of the individual component ingredients used in the IEC agar-TMM recipe need to be quantified. This study aimed to evaluate whether the overall attenuation coefficient of the IEC agar-TMM is the linear sum of the attenuation coefficients of each of its ingredients. Eight batches of agar-based materials were manufactured with different combinations of ingredients from the IEC agar-TMM recipe. The percentage concentrations of each ingredient used in the individual mixes were identical to that specified in the IEC recipe. The attenuation of each of these batches was measured over the ultrasound frequency range of 12-50 MHz and the attenuation value of the agar component was subtracted from the attenuation values of the other batches. The batch attenuation values, representing the attenuation of individual components within the IEC agar-TMM, were then summated and yielded attenuation values which accurately reproduced the attenuation of the IEC-agar TMM.