A high-strength and low-susceptibility magnetic resonance biopsy material-titanium bronze.

• The material used for biopsy puncture is copper alloy, which is an innovative material. • Has a magnetic susceptibility close to that of human bone tissue. • No susceptibility artifacts. • Has good corrosion resistance and mechanical properties comparable to medical materials. Combining the excellence of magnetic resonance imaging (MRI) and the perspective of exploring new materials, this paper predicts and analyzes the prospects for applying titanium bronze (Cu-2Ti) in biopsy surgical puncture under MRI conditions. Compared with the medical material TC4, Cu-2Ti is found to have specific strength and elongation and has a magnetic susceptibility close to that of human bone tissue. The results of the immersion and polarization curves of the simulated body fluid showed good corrosion resistance and a safe amount of dissolved copper ions (Cu2+). The finding that Cu-2Ti hardly produces magnetic susceptibility artifacts by different scan sequences of magnetic resonance. This provides a new value for applying orthopedic biopsy puncture needles. [ABSTRACT FROM AUTHOR]