1. An apparatus (50) of radio frequency (RF) shimming, comprising:Module (30) spatial sensitivity that determines the spatial distribution of the sensitivity of the transmission to at least one radio frequency coil (18,18 )module (32) selector which selects excitation model with a trajectory in k-space fieldModule (34) optimization, which can bend in the k-space excitations selected model excitation according to the generated spatial distribution of sensitivity, and provides a curved trajectory in k-space excitations in a gradient system (16) via a controller (22) of the gradient and radio frequency pulses in, at least one transmitter (24) which urges the at least one radio frequency transmit coil (18,18 ) transmitting the selected excitation model with a curved trajectory in k-space excitations.2. The apparatus (50) of radio frequency shimming of claim 1, wherein the trajectory in k-space to optimize the excitation includes at least one selective dimensional slices along the spoke.3. The apparatus (50) for radio frequency shimming claim 1 or 2, wherein the module (34) bends the trajectory optimization in the excitation k-space according to at least one of sinusoidal functions:where A is the amplitude, kmax is the maximum range of k-space, f is the frequency of the sine function, φ is the phase of the sine function, φtwist is the amount of twist, and φoff a tightening bias.4. Device (50) according to claim 1 RF shimming, in which the module (34) optimizing optimizes the amplitude, phase, and frequency trajectories in excitation k-space on the basis of the generated spatial sensitivity distribution model selected for the excitation of curvature of the trajectory in k-space excitations .5. The apparatus (50) of radio frequency shimming of claim 1, wherein the optimized trajectory in k-space according to the excitation sine function curved.6. Magnetic resonance system (10) comprising:a magnet (12), which generates a static magnetic field in the region (14) of the surve
