1. In a multicoil magnetic resonance imaging system, a method combining signals detected by multicoils for phase-contrast imaging comprising the steps of a) detecting complex image signals Z.sub.1i and Z.sub.2i with each coil, i, in two excitation sequences with different magnetic gradients, b) obtaining a combined image C, as the summation of (Z.sub.1i Z.sub.2i *)/W.sub.i.sup.2 where Z.sub.2i * is the complex conjugate of Z.sub.2i W.sub.i is a gain factor for coil, i; and c) forming an output image dependent on C.