Physics:Magnetic induction tomography

Magnetic induction tomography is an imaging technique used to image electromagnetic properties of an object by using the eddy current effect. It is also called electromagnetic induction tomography, electromagnetic tomography (EMT), eddy current tomography, and eddy current testing.

Applications

The method is used in nondestructive testing and geophysics, and has potential applications in medicine. It is also used to generate 3D images of passive electromagnetic properties, which has applications in brain imaging, cryosurgery monitoring in medical imaging, and metal flow visualization in metalworking processes. Recently, eddy current sensors has been used to scan additive manufacturing for metal process layer-by-layer, producing eddy current tomography images. The company AMiquam is developping this technology since 2020.

References

• Telford, W M; Geldart, L P; Sheri, R E; Keys, D A (1976). Applied Geophysics. Cambridge University Press: Cambridge, England. pp. Section 3.5.4. 
• Peyton, A. J., et al. "An overview of electromagnetic inductance tomography: description of three different systems." Measurement Science and Technology 7.3 (1996): 261.
• Griffiths H (2001). "Magnetic induction tomography". Meas. Sci. Technol. 12 (8): 1126–1131. doi:10.1088/0957-0233/12/8/319. Bibcode: 2001MeScT..12.1126G. 
• "Magnetic induction tomography: experimental realization". Physiological Measurement 21 (1): 89–94. 2000. doi:10.1088/0967-3334/21/1/311. PMID 10720003. 
• "Magnetic induction tomography: Hardware for multi-frequency measurements in biological tissues". Physiological Measurement 22 (1): 131–146. 2001. doi:10.1088/0967-3334/22/1/317. PMID 11236874. 
• Binns, R; Lyons, A R A; Peyton, A J; Pritchard, W D N (2001). "Imaging molten steel flow profiles". Meas. Sci. Technol. 12 (8): 1132–1138. doi:10.1088/0957-0233/12/8/320. Bibcode: 2001MeScT..12.1132B. 
• Soleimani, M; Lionheart, W R B (2006). "Absolute Conductivity Reconstruction in Magnetic Induction Tomography Using a Nonlinear Method". IEEE Trans Med Imaging 25 (12): 1521–1530. doi:10.1109/TMI.2006.884196. PMID 17167989. http://eprints.maths.manchester.ac.uk/2477/1/Final_Revised_MIT.pdf.