Echo-planar rotating-frame imaging |
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Authors: | Casanova F Robert H Perlo J Pusiol D |
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Institution: | Facultad de Matemática, Astronomía Fisica, Universidad Nacional de Córdoba, Astronomía y Física, Ciudad Universitaria, Córdoba 5000, Argentina. fcasanova@mc.rwth-aachen.de |
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Abstract: | A new rotating-frame imaging method that produces a complete cross section of an object in a single experiment is reported. The echo planar rotating frame imaging (EPROFI) technique uses two perpendicular RF gradients for two-dimensional spatial encoding and fully exploits the formation of rotary echoes for fast sampling of spatial frequencies. The acquisition scheme yields the Fourier transform of the spin distribution on Cartesian coordinates for straightforward image reconstruction. Implementation of the technique on a low-field portable NMR probe is described and results are presented for test objects with different geometries. |
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Keywords: | Magnetic resonance imaging Rotating-frame imaging Echo planar imaging RF gradients Spatial encoding |
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