title: Minimization of diffusive attenuation in T2-weighted NMR images of porous solids using turboSPI.
abstract: This communication presents the results of T2-weighted nuclear magnetic resonance imaging (MRI) of a water saturated porous volcanic rock using a fast single point imaging technique (turboSPI). Imaging porous materials with heterogeneously distributed mineral products, and air voids, using conventional imaging methods, which introduce T2-weighting by increasing the time between the excitation and refocusing pulses, often results in high diffusive signal losses and susceptibility distortion. T2-weighted images acquired of a water saturated porous rock using turboSPI with an effective echo time of 8.1 ms (actual inter-echo time of 0.9 ms) exhibit significantly decreased diffusive attenuation, compared to analogous images obtained with an inter-echo time of 8.1 ms.
authors.affiliation: Department of Physics, MRI Research Centre, University of New Brunswick, Fredericton, NB, Canada E3B 5A3. steven.beyea@nrc-cnrc.gc.ca
authors.forename: Steven D
authors.initials: SD
authors.lastname: Beyea
authors.forename: Theodore W
authors.initials: TW
authors.lastname: Bremner
authors.forename: Bruce J
authors.initials: BJ
authors.lastname: Balcom
mesh_terms: D000465:Algorithms; D004058:Diffusion; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008422:Materials Testing / Q000379:methods*; D016062:Porosity; D012987:Soil / Q000032:analysis*; D014867:Water / Q000032:analysis*
chemical_list: D012987:Soil; D014867:Water