Effects of in-pulse transverse relaxation in 3D ultrashort echo time sequences: analytical derivation, comparison to numerical simulation and experimental application at 3T.

@article{Springer2010EffectsOI,
  title={Effects of in-pulse transverse relaxation in 3D ultrashort echo time sequences: analytical derivation, comparison to numerical simulation and experimental application at 3T.},
  author={Fabian Springer and Guenter Steidle and Petros Martirosian and Claus D. Claussen and Fritz Schick},
  journal={Journal of magnetic resonance},
  year={2010},
  volume={206 1},
  pages={
          88-96
        }
}
The introduction of ultrashort-echo-time-(UTE)-sequences to clinical whole-body MR scanners has opened up the field of MR characterization of materials or tissues with extremely fast signal decay. If the transverse relaxation time is in the range of the RF-pulse duration, approximation of the RF-pulse by an instantaneous rotation applied at the middle of the RF-pulse and immediately followed by free relaxation will lead to a distinctly underestimated echo signal. Thus, the regular Ernst… CONTINUE READING
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