Magneto-motive ultrasound imaging using superparamagnetic ferrite nanoparticle with enhanced saturation magnetization synthesized by a simple copreciptation method

Author(s)

Hadaian, Yaser ; Sampaio, Diego R. T. ; Ramos, Ana Paula ; Carneiro, Antonio. A. O. ; Pavan, Theo Z. ; IEEE

• Document type: Journal article
• Source: 2017 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS); v. N/A, p. 4-pg., 2017-01-01.

Abstract

In this study five different Zn-substituted magnetite nanoparticles, ZnxFe(1-x)Fe(2)O(4) (x=0.0, 0.1, 0.2, 0.3, 0.4) prepared by a one-pot simple co-precipitation reaction, were used as contrast agents in magneto-motive ultrasound (MMUS) imaging. All samples were in superparamagnetic state with the size distribution between 30-40 nm. Magnetic measurements showed that the magnetization of magnetite was enhanced with substituting Zn for Fe in its structure. MMUS images were constructed using five gelatin phantoms each with an inclusion including the aforementioned nanoparticles. All nanoparticles have the potential to be used in MMUS imaging as a contrast agent and the induced displacement changed according to their magnetization values. (AU)

• FAPESP's process: 09/54082-2 - Acquisition of a vibranting sample magnetometer coupled with a superconducting quantum interference device assensor (Squid-VSM) with cryogenic closed cycle
• Grantee: Ernesto Chaves Pereira de Souza
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 13/18854-6 - Photoacoustic and ultrasound imaging applied to tissue characterization
• Grantee: Theo Zeferino Pavan
• Support Opportunities: Research Grants - Young Investigators Grants