Paul Rick L, Mille Matthew M, Turkoglu Danyal J, Chen-Mayer H Heather
Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg MD, USA.
Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville MD, USA.
J Radioanal Nucl Chem. 2023 Aug;332(8):3285-3291. doi: 10.1007/s10967-023-08967-5. Epub 2023 Jun 5.
Three-dimensional printing and casting materials were analyzed by prompt gamma-ray activation analysis (PGAA) to determine their suitability as human tissue surrogates for the fabrication of phantoms for medical imaging and radiation dosimetry applications. Measured elemental compositions and densities of five surrogate materials simulating soft tissue and bone were used to determine radiological properties (x-ray mass attenuation coefficient and electron stopping power). When compared with radiological properties of International Commission on Radiation Units and Measurements (ICRU) materials, it was determined that urethane rubber and PLA plastic yielded the best match for soft tissue, while silicone rubber and urethane resin best simulated the properties of bone.
通过瞬发伽马射线活化分析（PGAA）对三维打印和铸造材料进行分析，以确定它们作为人体组织替代物用于制造医学成像和辐射剂量学应用模型的适用性。测量了模拟软组织和骨骼的五种替代材料的元素组成和密度，用于确定放射学特性（X射线质量衰减系数和电子阻止本领）。与国际辐射单位与测量委员会（ICRU）材料的放射学特性相比，确定聚氨酯橡胶和聚乳酸塑料与软组织的匹配度最佳，而硅橡胶和聚氨酯树脂最能模拟骨骼的特性。
