The use of an improved inversion pulse with the spin-echo/inversion-recovery sequence to give increased accuracy and reduced imaging time for T1 measurements.
The hyperbolic secant inversion pulse has been incorporated into the interleaved saturation-recovery/inversion-recovery sequence to provide T1 measurements combining high precision with a significantly reduced imaging time (a mean accuracy of 2% over a T1 range of 300 to 1650 ms for standard gel phantoms, with Tr1 = Tr2 = 2.0 s, Ti = 0.67 s).
Gowland
P A
PA
Joint Department of Physics, Royal Marsden Hospital, Sutton, Surrey, United Kingdom.
Leach
M O
MO
Sharp
J C
JC
D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008433:Mathematics; D013997:Time Factors