Development of Zr-based alloys to suppress MRI artifacts for biomedical applications

为了抑制磁共振伪影，本研究开发了锆基合金和复合材料。含Nb或Mo的Zr合金的磁化率随相组成和体积分数的不同而不同。此外，磁化率还受Ag的积分控制，即负磁化率。我们发现伪影体积随着磁化率的降低而减少。因此，研制的锆基合金和复合材料可以减少磁共振伪影。

Zr-based alloys and composites were developed to suppress the MRI artifacts in this study. Magnetic susceptibility of Zr alloys containing Nb or Mo varied depending on the phase constitution and the volume fraction. Also, the magnetic susceptibility was controlled by the integration of Ag which was negative magnetic susceptibility. We showed that artifact volume decreased with decreasing magnetic susceptibility quantitatively. Therefore the developed Zr-based alloy and composites can decrease MRI artifacts.