Füzesi Krisztián, Gyöngy Miklós
Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary.
Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary.
Ultrasound Med Biol. 2017 Mar;43(3):712-720. doi: 10.1016/j.ultrasmedbio.2016.11.006. Epub 2016 Dec 27.
Current use of 3-D printers to manufacture ultrasound phantoms is limited to relatively expensive photopolymer jetting printers. The present work investigates the feasibility of using two common and inexpensive 3-D printer technologies, fused deposition modeling (FDM) and digital light processing (DLP), to print custom filament target phantoms. Acoustic characteristics obtained from printed solid blocks indicated that the printing materials-acrylonitrile butadiene styrene and polylactic acid for FDM and a photopolymer for DLP printing-were appropriate for use as scatterers. A regular grid of filaments was printed to study printing accuracy. As a proof of concept of the phantom manufacturing process, a complex pattern of filament targets was placed in de-ionized water to create a phantom, which was then imaged using an ultrasound imager. The pattern was clearly identifiable, although multiple reflections were observed, which underscores the importance of future work to enhance printing resolution. This goal is deemed possible using improvement of the DLP printing setup.
目前3D打印机用于制造超声体模仅限于相对昂贵的光聚合物喷射打印机。本研究探讨了使用两种常见且廉价的3D打印技术——熔融沉积建模（FDM）和数字光处理（DLP）来打印定制丝状靶体模的可行性。从打印的固体块获得的声学特性表明，用于FDM的打印材料——丙烯腈丁二烯苯乙烯和聚乳酸，以及用于DLP打印的光聚合物，适合用作散射体。打印了规则的丝状网格以研究打印精度。作为体模制造过程的概念验证，将复杂的丝状靶图案放置在去离子水中以创建体模，然后使用超声成像仪对其进行成像。尽管观察到多次反射，但图案清晰可辨，这突出了未来提高打印分辨率工作的重要性。使用改进的DLP打印设置，这个目标被认为是可行的。
