We propose an optimized offset golden angle trajectory of 3-slice radial CAIPI for more uniform distribution of phase modulated rays. Both computer simulation and phantom scan demonstrate that our proposed method has less artifact. Simulation studies show a 41% reduction in aliasing energy when compared to conventional golden angle trajectory. As well, optimization with an asymmetric echo readout resulted in a reduction of acquisition time by 15% with little sacrifice of image quality. These two methods can benefit simultaneous multi-slice perfusion acquisitions.