Sistema Automático para Imagens Magnéticas Bidimensionais
DOI:
https://doi.org/10.13102/sscf.v9i.5263Keywords:
Imagens Magnéticas, Instrumentação, Sensores Magnéticos.Abstract
Apresenta-se um protótipo de Scanner magnético automatizado para a obtenção de imagens magnéticas bidimensionais (2D), usando um sensor magnetorresistivo. Estes magnetômetros convertem sinais magnéticos em tensão elétrica diferencial. A automação foi realizada por meio de uma rotina em LabVIEW 8:6, e o processamento digital e a obtenção das imagens magnéticas, realizados off-line, usando uma rotina em linguagem MATLAB 7:6. O número de amostras foi de 400 amostras, adquiridas com uma frequência de aquisição de 4 kHz. Foram realizados vários experimentos usando fantomas magnéticos. Os resultados preliminares mostram que o sistema é capaz de obter sinais e imagens magnéticas de diferentes características, varrendo áreas de dimensões ate (0.12 X 0.12) m2.Downloads
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C-C. Cheng, C-C. Chien, H-H. Chen, Y. Hwu, Y-T. Ching, Image Alignment for Tomography Reconstruction from Synchrotron X-Ray Microscopic Images. PLoS ONE 9, (1) e84675 (2014). http://doi:10.1371/journal.pone.0084675.
Hui Hu, Multi-slice helical CT: scan and reconstruction. Med. Phys. 26, (1) 5 (1999).
H. Kado, M. Higuchi, M. Shimogawara, Y. Haruta, Y. Adachi, J. Kawai, H. Ogata, G. Uehara, Magnetoencephalogram systems developed at KIT. IEEE Trans. Appl. Supercond. 9, 4057 (1999).
J. Malmivuo, R. Plonsey, Bioelectromagnetism: Principles and Applications of Bioelectric and Biomagnetic Fields. New York: BemBook-Oxford University Press (1995).
D.B. de Araújo, A.A. Carneiro, E.R. Moraes, O. Baffa, Biomagnetismo uma nova interface entre a física e a biologia. Ciência Hoje 26, (153) 24 (1999).
A. Gramfort et all, MNE software for processing MEG and EEG data. NeuroImage 86, 446 (2014).
A.A Mazzola, Ressonância magnética: princípios de formação da imagem e aplicações em imagem funcional. Rev. Bras. Fis. Med. 3, (1) 117 (2009).
R.W. Brown et all, Magnetic Resonance Imaging: Physical Properties and Sequence Design. New Jersey: John Wiley & Sons (2014).
F. Martelli, S. Del Bianco, A. Ismaelli, G. Zaccanti, Light propagation through biological tissue and other diffusive media: theory, solutions, and software. Bellingham: SPIE (2009).
T.Z. Pavan, L.P. Neves, A.A.O. Carneiro, Elastografia por ultrassom: uma nova modalidade de imagem. Ciência Hoje 42, (251) 28 (2008).
G.B. Saha, Basics of PET Imaging. Physics, Chemistry, and Regulations (2nd Edition). New York: Springer (2010).
F.A. MettlerJr, M.J. Guiberteau, Essentials of Nuclear Medicine Imaging (6th Edition). Philadelphia: Saunders Elsevier (2012).
M. Soleimani, W.R.B. Lionheart, Absolute Conductivity Reconstruction in Magnetic Induction Tomography Using a Nonlinear Method. IEEE Trans. Med. Imag. 25, (12) 1521 (2006).
W. Hsin-Yu, M. Soleimani, A Magnetic Induction Tomography System for Prospective Industrial. Processing Applications. Chin. J. Chem. Eng. 20, (2) 406 (2012).
H. Scharfeter et all, Magnetic induction tomography: single-step solution of 3D inverse problem for differential image reconstruction. Int. J. Inf. Sys. Sci. 2, (4) 585 (2006).
I. Kolesnikov, Magnetic Tomography Method (MTM). A Remote Non-destructive Inspection Technology for Buried and SubSea Pipelines. Offshore Tech. Conf. (2014). http://doi:10.4043/24569-MS.
J.A. Leyva-Cruz, E.S. Ferreira, M.S.R. Miltão, A.V. Andrade-Neto, A.S. Alves, M.E. Cano, Reconstruction of magnetic source images using the Wiener lter and a multichannel magnetic imaging system. Rev. Sci. Inst. 854, 167 (2014). http://dx.doi.org/10.1063/1.4884641.
P.D. Dimitropoulos, J.N. Avaritsiotis, A 2-D ferrous object imaging technique based on magnetic field sensor arrays. Sensors and Actuators A 106, (1) 336 (2003).
D.J. Mapps, Remote magnetic sensing of people. Sensors and Actuators A 106, (1-3) 321 (2003). http://dx.doi.org/10.1016/S09244247(03)00193-6.
J.A. Leyva-Cruz et al., Imaging Ferromagnetic Tracers with a Magnetoresistive Sensors Array. AIP Conf. Proc. 854, 167 (2006). http://dx.doi.org/10.1063/1.2356436.
M.E. Cano et all, Superficial magnetic imaging by an xy-scanner of three magnetoresistive channels. Rev. Sci. Inst. 83, 033705 (2012). http://dx.doi.org/10.1063/1.3694002.
S.L. Vieira, L.N. de Oliveira, A.A.O. Carneiro, Princípios físicos da elastografia por ressonância magnética. Rev. Bras. Ens. Fis 36, (2) 2301 (2014).
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