Imaging of heterogeneous materials with a turbo spin echo single-point imaging technique.

摘要: A magnetic resonance imaging method is presented for of heterogeneous broad linewidth materials. This allows distortionless relaxation weighted by obtaining multiple phase encoded k-space data points with each RF excitation pulse train. The use this method, turbo spin echo single-point imaging-(turboSPI), leads to decreased times compared traditional constant-time techniques, as well the ability introduce spin-spin contrast through longer effective times. Imaging in turboSPI are further low flip angle steady-state excitation. Two-dimensional images paramagnetic doped agarose phantoms were obtained, demonstrating and resolution characteristics sequence, a both amplitude deconvolution was demonstrated high-resolution imaging. Three-dimensional partially water-saturated porous volcanic aggregate (T(2L) approximately 200 ms, Deltanu(1/2) 2500 Hz) contained hardened white Portland cement matrix 0.5 quartz sand (T(2) 300 T(2)(*) 800 microseconds) shown.