What are the different types of spin echo of magnetic resonance imaging (MRI)? What are the fundamental characteristics features of T1, T2 and STIR echo sequences?

Ichchha — Sun, 18 Jun 2017 08:39:47 +0000

The following are the different types of spin echo of magnetic resonance imaging (MRI):

Single echo spin echo
- Simplest for of SE pulse sequence
- consist of 90° pulse, 180º pulse and then echo
Multi echo spin echo: As long as T2 relaxation has not completely destroyed the MR signal it is possible to stimulate the system with addition 180 pulses and generate additional echoes is progressively due to T2 decay. Uniformly diminishes in size.
Fast (Turbo) Spin Echo (FSE): echoes are not uniformly diminishing in size with increasing TE multi echo SE as expected.

The fundamental characteristics of :

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others:

Gadolinium enhancement

ADVANTAGE:

↑ed lesion conspicuity
↑ed delineation of the margin of a mass relative to lower signal of muscles, bone, vessels or globe.
To quickly identify : nasal mucosa -white, Fat- white, CSF and vitreous- black

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