A method for reconstructing an image includes acquiring raw image data during a scan of an area, estimating an image from the raw image data, separating the estimated image into a region of interest and a background region, and applying compressed sensing to iteratively update only the ROI and maintain the background region to reconstruct an image. An electrically conductive tape is attached on the outside of the motor frame to extend between the brackets, thereby short-circuiting the brackets to each other. The exterior surfaces of the V-shaped member may have a material applied having a higher coefficient of friction than that of the V-shaped member.