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

IEEE Transactions on Bio-medical Engineering
A RengleO Beuf

Abstract

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.

References

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Citations

Aug 7, 2009·Computer Methods in Biomechanics and Biomedical Engineering·M Mamun MollaGiles Roditi
Sep 21, 2011·Journal of Magnetic Resonance Imaging : JMRI·Tobias WechJürgen E Schneider
May 12, 2012·IEEE Transactions on Information Technology in Biomedicine : a Publication of the IEEE Engineering in Medicine and Biology Society·Dandan LiangTat Soon Yeo
May 23, 2012·Osteoarthritis and Cartilage·X I GuL Cardoso
Sep 13, 2016·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·Zhiqiong WangXuejun Qiu

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