Comparison of water absorbability of 3D printed phantom materials based on MR CPMG method(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2018年第7期
- Page:
- 833-838
- Research Field:
- 生物材料与力学
- Publishing date:
Info
- Title:
- Comparison of water absorbability of 3D printed phantom materials based on MR CPMG method
- Author(s):
- ZHANG Haozhao1; YANG Xueqian1; WANG Danli2; QIU Jianfeng1
- 1. Medical Engineering and Technology Research Center, Taishan Medical Univerisiry, Tai’an 271016, China; 2. Suzhou Niumag Corporation, Suzhou 215163, China
- Keywords:
- ; Keywords: porosity; magnetic resonance phantom; water absorbability; polymethylmethacrylate; three-dimensional printed material; Carr Purcell Meiboom Gill
- PACS:
- R-331；O482.53
- DOI:
- DOI:10.3969/j.issn.1005-202X.2018.07.018
- Abstract:
- Abstract: Magnetic resonance (MR) phantom, an important component for MR imaging test, was composed of polymethylmethacrylate (PMMA) material shell, PMMA material test components and test solution (pure water, copper sulfate and sodium chloride). In recent years, more and more MR phantoms were produced by three-dimensional (3D) printing technique in order to meet the requirements for phantom personalized design and rapid prototyping. However, there was no relevant research on whether 3D printed phantom could be effectively waterproof like PMMA materials. Six kinds of materials were investigated in this study, including 3 kinds of 3D printed materials (ABS resin, SLA photosensitive resin and DLP photosensitive resin) and 3 kinds of commonly used phantom materials (silica gel, hydrogels and PMMA). Based on PQ001 MR analyzer, we used CPMG (Carr Purcell Meiboom Gill) hard pulse sequence to test the [T2] relaxation time of 6 kinds of materials before and after saturation for comparing their pore sizes. Meanwhile, the water absorbability of different materials was comprehensively compared with the consideration of [T2] relaxation time and the change rate of [T2] semaphore before and after saturation. The results revealed that the pore size of PMMA, photosensitive resin, ABS and other 3D printed materials were significantly lower than that of silica and hydrogel, but the water absorbability of ABS and SLA photosensitive resin were similar to PMMA. Considering both pore size and water absorbability, ABS and SLA photosensitive resin materials which have a similar performance with PMMA of conventional MR phantom shell material in waterproof and anti-seepage could be an effective alternative to PMMA for phantoms and inserts.
Last Update: 2018-07-24