1. A method for determining a diffusion-weighted magnetic resonance image of an examination subject, comprising the steps of: exposing an examination subject in a magnetic resonance system to a pulse sequence, including activating magnetic diffusion gradients and activating artifact-reducing gradients selected from the group consisting of dephasing gradients and spoiler gradients, to acquire a diffusion-weighted magnetic resonance data set from the examination subject; calculating a diffusion-weighted image of the examination subject from the diffusion weighted magnetic resonance data set; and setting at least one characteristic selected from the group consisting of a position of said artifact-reducing gradients, an amplitude of said artifact-reducing gradients, and a polarity of said artifact-reducing gradients, dependent on said magnetic diffusion gradients to reduce artifacts in said diffusion-weighted image due to additional signal echoes produced by said artifact-reducing reducing gradients.