A dedicated two-channel phased-array receiver coil for high-resolution MRI of the rat knee cartilage at 7 T - Université de Rennes Accéder directement au contenu
Article Dans Une Revue IEEE Transactions on Biomedical Engineering Année : 2009

A dedicated two-channel phased-array receiver coil for high-resolution MRI of the rat knee cartilage at 7 T

Résumé

In the field of small animal studies, the array coil imaging has become increasingly important. In this paper, a dedicated two-channel array coil operating at 300 MHz (7 T) for high-resolution MRI (HR-MRI) of the rat knee cartilage is presented. The average gain in signal-to-noise ratio (SNR) compared to a 15-mm multipurpose surface coil was 2.2. This SNR gain was used to improve the spatial resolution of 3-D acquisitions by decreasing the voxel size from 59 x 59 x 156 microm(3) to 51 x 51 x 94 microm(3) without time penalty. Also, a set of two array coils was used to perform a simultaneous acquisition of both knee joints of a rat, maintaining the same scanning time without SNR or spatial resolution degradation compared to the single knee joint acquisition. This two-channel array coil is a key element to perform HR-MRI and extract cartilage morphological parameters such as thickness and volume.
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Dates et versions

hal-00913395 , version 1 (03-12-2013)

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Citer

Adrian Rengle, Mircea Armenean, Radu Bolbos, Jean-Christophe Goebel, Astrid Pinzano-Watrin, et al.. A dedicated two-channel phased-array receiver coil for high-resolution MRI of the rat knee cartilage at 7 T. IEEE Transactions on Biomedical Engineering, 2009, 56 (12), pp.2891-2897. ⟨10.1109/TBME.2008.2006015⟩. ⟨hal-00913395⟩
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