Method of magnetic resonance imaging

A method of magnetic resonance imaging includes exciting magnetic resonant active nuclei in a region of interest; creating magnetic field gradients; receiving radio frequency data from the region of interest; and producing an image by combining images obtained from radio frequency signals of single coils of the array and weighting the images of each coil with a sensitivity of the corresponding coil, wherein an estimated sensitivity of each coil of the array being used is determined by applying a smoothing filter to a k-space data set received from each coil; and wherein for a one-dimensional sensitivity profile the filter is configured with a triangular shape and for a two-dimensional sensitivity profile the filter is configured with a pyramidal shape, the triangular filter having a width and the pyramidal filter having a base double a maximum spatial frequency of the corresponding coil field.