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

Autor(es)

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

• Tipo de documento: Artigo Científico
• Fonte: 2017 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS); v. N/A, p. 4-pg., 2017-01-01.

Resumo

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)

• Processo FAPESP: 09/54082-2 - EMU: projeto para aquisição de um magnetômetro de amostra vibrante que utiliza como sensor um dispositivo supercondutor de interferência quântica acoplado (Squid-VSM) com circuito fechado de criogenia
• Beneficiário: Ernesto Chaves Pereira de Souza
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 13/18854-6 - Imagens fotoacústicas e ultrassônicas para caracterização de tecidos viscoelásticos
• Beneficiário: Theo Zeferino Pavan
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores