COMBINATION OF SIGNALS FROM ARRAY COILS USING SIGNAL-BASED ESTIMATION OF COIL SENSITIVITY PROFILES

摘要

Magnetic resonance imaging apparatus comprising an array of at least two r.f. receive coils for receiving data from a region of interest, and means for producing an image by combining signals from the coils of the array, using the relative sensitivity of each coil obtained e.g. in image space by division of the intensity of the spatial image from each coil by the intensity of a spatial image derived from at least one other coil, on a pixel-by-pixel basis. In particular, the image producing means is arranged to use relative sensitivity data at lower resolution compared to image data.