The objective of this study was to investigate new 3D printable materials, namely PORO-LAY series in both solid and flexible forms, on behalf of their radiological properties by measuring their Hounsfield units (HUs) values at varying infill densities, different infill structures and several kinds of fluids in order to assess their suitability as tissue mimicking materials (TMMs) for phantom applications. In this study, it was found that PORO-LAY materials can be used to achieve low and high values of HU ranges from −990 to +950 depending on their infill density and the filling fluids. In addition, PORO-LAY materials have an acceptable dimensional stability and dimensional accuracy in their solid and flexible forms. The results also indicate that the shape of infill pattern influences the values of HU with percentage difference ranges from 3 to 33% depending on the selected infill structure. The results of this study showed that PORO-LAY materials were feasible to be used as TMMs for CT and PET/CT applications.

这项研究的目的是通过测量在不同填充密度，不同填充结构和几种填充率下的Hounsfield单位（HUs）值来代表其放射学性质，研究固体和柔性形式的新型3D可打印材料，即PORO-LAY系列。为了评估它们是否适合用作幻影应用的组织模拟材料（TMM）。在这项研究中，发现PORO-LAY材料可用于实现介于-990到+950范围内的HU值的低值和高值，具体取决于其填充密度和填充液。另外，PORO-LAY材料以其固体和柔性形式具有可接受的尺寸稳定性和尺寸精度。结果还表明，填充图案的形状会影响HU的值，其百分比差异取决于所选填充结构的3％至33％。这项研究的结果表明，PORO-LAY材料可以用作CT和PET / CT应用的TMM。