title: Effects of slice selection and diffusion on T2 measurement.
abstract: This study examines slice selection and diffusion as sources of systematic error in T2 estimates obtained from imaging experiments. The selective refocusing pulses in a multislice, two-echo, spin-warp experiment cause slice profiles of sequential echoes to change in shape. This results in bias in T2 images calculated from the two-echo data set. A method to correct the bias is presented. The effect of diffusion on T2 images obtained with typical two-echo imaging sequences was found to be negligible.
authors: Lawrence Berkeley Laboratory, University of California, Berkeley 94720.
authors: S T
authors: ST
authors: Wong
authors: M S
authors: MS
authors: Roos
mesh_terms: D008279:Magnetic Resonance Imaging; D008433:Mathematics; D008961:Models, Structural