The ultrashort TE (UTE) sequences allow measurement of fast-decaying signal from short T2* tissues in the joint such as tendon, ligament, and meniscus. By acquiring multiple echoes along the decay, T2* map can be generated, which has a potential to be used as a biomarker for diseases such as arthritis and tendinopathy. However, the comparison of T2* maps from different UTE sequences has not been fully explored. In this study, UTE based on stack of spirals and 3D radial acquisition were compared.