Abstract #0030
Spin Echoes in the Regime of Weak Dephasing
Jakob Asslnder 1 , Steffen Glaser 2 , and Jrgen Hennig 1
1
Dept. of Radiology - Medical Physics,
University Medical Center, Freiburg, Germany,
2
Dept.
of Chemistry, Technische Universitt Mnchen, Germany
It is shown that it is possible to form spin echoes
after a single excitation pulse, where the time between
the end of the pulse and the echo is longer than the
length of the pulse itself. This stands in contrast to
Hahn's spin echo theory, where the length of the pulse
sequence is at most equal to the time between the end of
the composite pulse and the echo. A representative pulse
is implemented into a FLASH sequence and
proof-of-concept images show a reduction of
off-resonance induced signal attenuation.
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