Dynamic contrast enhanced MRI requires measurement of arterial input function with great accuracy while maintaining high spatial resolution. Golden angle stack-of-stars radial acquisition was used to get reconstructions at multiple temporal resolutions. A multiresolution reconstruction scheme is used to generate AIFs using a very small temporal window. The accuracy of the reconstruction method was checked on a realistic phantom and then applied to an in vivo data. Results show that compressed sensing reconstruction works best with high temporal resolution (HTR) AIF giving both diagnostic image quality and accurate GFR estimate.