transverse magnetization การใช้

• The other packets contribute to the transverse magnetization decay due to the homogeneous broadening.
• All the information about the frequency spectrum is encoded in the motion of the transverse magnetization.
• Torrey modified Bloch's original description of transverse magnetization to include diffusion terms and the application of a spatially varying gradient.
• The frequency spectrum is reconstructed using the time behavior of the transverse magnetization made up of y-and x-axis components.
• Amorphous solids have 2 in the range of milliseconds, while the transverse magnetization of crystalline samples decays in around 1 / 20 ms.
• A shaped pulse ( shown here with a sinc modulation ) causes a 90?nutation of longitudinal nuclear magnetization within a slab, or slice, creating transverse magnetization.
• An MR image is a complex-valued map of the spatial distribution of the transverse magnetization " M " xy in the sample at a specific time point after an excitation.
• Bulk water molecules are also relatively far from magnetic field perturbing macromolecules, such that free water protons experience a more homogenous magnetic field, which results in slower transverse magnetization dephasing and a longer " T " 2 *.
• T2 * decay is caused by magnetized nuclei in a volume of space losing magnetic coherence ( transverse magnetization ) from both bumping into one another and from intentional differences in applied magnetic field strength across locations ( field inhomogeneity from a spatial gradient ).