996 resultados para Trajectories-G
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G-1 - Appeal Activity in the Public Assistance Programs - April 2007
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G-1 - Appeal Activity in the Public Assistance Programs - March 2007
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The use of self-calibrating techniques in parallel magnetic resonance imaging eliminates the need for coil sensitivity calibration scans and avoids potential mismatches between calibration scans and subsequent accelerated acquisitions (e.g., as a result of patient motion). Most examples of self-calibrating Cartesian parallel imaging techniques have required the use of modified k-space trajectories that are densely sampled at the center and more sparsely sampled in the periphery. However, spiral and radial trajectories offer inherent self-calibrating characteristics because of their densely sampled center. At no additional cost in acquisition time and with no modification in scanning protocols, in vivo coil sensitivity maps may be extracted from the densely sampled central region of k-space. This work demonstrates the feasibility of self-calibrated spiral and radial parallel imaging using a previously described iterative non-Cartesian sensitivity encoding algorithm.
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G-1 - Appeal Activity in the Public Assistance Programs - May 2007
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Comprend : Le tambour nocturne ou l'esprit frappeur : [comédie en 5 actes] - Le dissipateur : [comédie en 3 actes] - Le jeune homme à l'épreuve : [comédie en 4 actes] - Herménégilde martyr : [tragédie en 5 actes] - Les sept dormants : [comédie en 5 actes]
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[Mazarinade. 1649]
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[Mazarinade. 1649]
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G-1 Appeal Activity in the Public Assistance Programs, June 2007