Electrical impedance tomography (EIT) is a medical imaging technique in which an image of the conductivity or permittivity of part of the body is inferred from surface electrical measurements. Typically, conducting electrodes are attached to the skin of the subject and small alternating currents are applied to some or all of the electrodes. The resulting electrical potentials are measured, and the process may be repeated for numerous different configurations of applied current.

Proposed applications include monitoring of lung function, dete ....etc

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Schizophrenia affects one in a hundred Canadians at some point in their life. This disorder is characterized by auditory hallucinations, delusions, lack of motivation and thought disorder. Antipsychotic drugs improve some of these symptoms, but there is no cure and the cause of schizophrenia is still unknown. Current models suggest that a brain lesion in-utero, in conjunction with neurodegeneration, may result in the symptoms of the disease. These processes may result in abnormal brain function, manifested as changes in brain metabolism.



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IMPEDANCE SPECTROSCOPY
Presented by
Manu Gopal S
Applied Electronics and Instrumentation
College Of Engineering, Trivandrum
2007-11 batch



CONTENTS
Impedance spectroscopy
Its need and uses
Experimental set up
Circuit model for
Bare electrodes
Cell coated electrodes

Results
Conclusion
References

What is Impedance spectroscopy
EIS measures the dielectric properties of the medium as a function of frequency.
It is based on the interaction ....etc

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Presented By
FAHAD AZIZ


What is Spectroscopy?
 The study of how 'species' (i.e., atoms, molecules, solutions) react to light. Some studies depend on how much light an atom absorbs. The electromagnetic radiation absorbed, emitted or scattered by the molecule is analyzed. Typically, a beam of radiation from a source such as a laser is passed through a sample, and the radiation exiting the sample is measured. Some, like Raman, depend on a molecule's vibrations in reaction to the light.
 Sir Chandrashekha ....etc

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To begin with, the word tomography can be explained with reference to ?tomo? and
?graphy?; ?tomo? originates from the Greek word ?tomos? which means section or slice,
and ?graphy? refers to representation. Hence tomography refers to any method which
involves reconstruction of the internal structural information within an object mathematically from a series of projections.

The projection here is the visual information probed using an emanation which are physical processes involved. These include physical processes such as radiation, wa ....etc

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