MRI compatibility of several early transition metal based alloys and its influencing factors.
作者： Da-Bo Zhou , Shao-Gang Wang , Shao-Ping Wang , Hong-Jun Ai , Jian Xu
DOI: 10.1002/JBM.B.33832
关键词:
摘要: Magnetic resonance imaging (MRI) compatibility of three early transition metal (ETM) based alloys was assessed in vitro with agarose gel as a phantom, including Zr-20Nb, near-equiatomic (TiZrNbTa)90 Mo10 and Nb-60Ta-2Zr, together pure tantalum L605 Co-Cr alloy for comparison. The artifact extent the MR image quantitatively characterized according to maximum area 2D images total volume reconstructed 3D series slices under acquisition by fast spin echo (FSE) sequence gradient (GRE) sequence. It indicated that artifacts higher magnetic susceptibility (χv ) approximately 3-fold greater than ETM-based χv range 160-250 ppm. In ETM group, MRI materials can be ranked tantalum, Nb-60Ta-2Zr. addition, using rabbit cadaver implanted tube specimens model ex vivo assessment, it confirmed severity Nb-60Ta-2Zr is significantly reduced comparison alloy. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 377-385, 2018.
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