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MRI 6B-TRANSVERSE RELAXATION (T2)

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MRI 6B-TRANSVERSE RELAXATION (T2)

1. The transversal relaxation time is the time taken for the protons to completely dephase.
2. It is a continous, gradual, process.
3. Protons precess at the same rate in an identical magnetic field.
4. But B 0 is not identical throughout (there are tiny field inhomogeneities), each proton is affected by the tiny local magnetic fields from nearby nuclei which are not distributed equally.
5. Transversal relaxation time is known as T2 or spin-spin relaxation.


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REFERENCES

1. Bushberg, J. T. (2012). The essential physics of medical imaging. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. Find it at Amazon
2. Heggie, J. C., Liddell, N. A., & Maher, K. P. (1997). Applied imaging technology. Melbourne: St. Vincents Hospital.

Ⓒ A. Manickam 2018

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