Three Dimensional Imaging with Independent Slab Excitation and Encoding
نویسندگان
چکیده
Fig. 2 (left) Phase images with iron-rich region (substantia nigra, red nucleus) enlarged below. (a) standard axial, (b) standard oblique showing overwhelming distortion from oblique voxel alignment, (c) oblique ISEE as acquired with axial acquisition showing anterior and posterior aliased portions, (d) same ISEE data set as (c) after reformatting into oblique plane. In (c) oblique ISEE provides same result to (a) except for aliasing, by preserving axial voxel alignment along the main field, while using an oblique excitation volume. In (d), unaliased ISEE recovers contrast that was distorted in the standard oblique (b). Fig. 1 (above) 3D ISEE example. (a) Encoding (dashed), and excitation volumes (solid) shown on a sagittal scout image. (b) Aliased sections are detailed, from the position within the oblique slab excitation to the aliased position in the acquired transverse volume. Only segment 1 is not aliased. Three Dimensional Imaging with Independent Slab Excitation and Encoding
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