For mouse brain imaging, determining the size of a loop coil is a trade-off between SNR and imaging coverage. Here, we propose a multi-purpose coil arrangement incorporating a small loop coil and a position-adjustable add-on saddle coil to enhance the imaging coverage of anatomical images and improve the SNR in the regions distant to the surface coil. The result shows the imaging coverage can be adjustable for targeting different brain regions and demonstrated this design concept in mouse brain imaging experiments.
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