The application of the 3D printing technique for the development of low-cost phantoms is being investigated recently and requires a complex study of the interaction of printed materials with different types and qualities of radiation, as well as the characterization of printing filaments to correctly simulate human tissue attenuation. This study aims to present the Computed Tomography (CT) Imaging analysis of a fused filament fabrication (FFF) 3D printed anthropomorphic neck-thyroid phantom. The commercial phantom ATOM MAX 711 from CIRS was used as anatomy of reference for the 3D modeling base of the neck-thyroid phantom. Commercially available PLA and ABS XCT-A validated at IPEN were used in the 3D printing process in order to simulate soft and bone tissues respectively. The printing process was done using the RAISE3D PRO 2 FFF printer from IPEN. The imaging study of the phantom was performed through the analysis of images from a CT acquisition, comparing the Hounsfield Units (HU) numbers of the tissues between both CIRS and 3D printed phantoms. The developed phantom is a feasible alternative and presents some desirable characteristics for applications in radiation protection, measurements of radioisotopes incorporated in the thyroid (both contamination counters and nuclear medicine detectors) and training of techniques of acquisition of images with X rays.

中文翻译：

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用于多学科目的的熔丝制造 (FFF) 3D 打印颈部甲状腺模型的计算机断层扫描成像分析


最近正在研究 3D 打印技术在低成本模型开发中的应用，需要对打印材料与不同类型和质量的辐射之间的相互作用进行复杂的研究，以及打印丝材的表征以正确模拟人体组织衰减。本研究旨在对熔丝制造 (FFF) 3D 打印拟人化颈部甲状腺模型进行计算机断层扫描 (CT) 成像分析。 CIRS 的商业体模 ATOM MAX 711 用作颈部甲状腺体模 3D 建模基础的解剖学参考。 3D 打印过程中使用了经 IPEN 验证的市售 PLA 和 ABS XCT-A，以分别模拟软组织和骨组织。打印过程是使用 IPEN 的 RAISE3D PRO 2 FFF 打印机完成的。模型的成像研究是通过分析 CT 采集的图像来进行的，比较 CIRS 和 3D 打印模型之间的组织亨斯菲尔德单位 (HU) 数。所开发的模型是一种可行的替代方案，并为辐射防护、甲状腺中放射性同位素的测量（污染计数器和核医学探测器）以及 X 射线图像采集技术的培训提供了一些理想的特性。