There are three basic varieties of gradient echo pulse sequences: conventional, spoiled, and T2 enhanced. Gradient echo sequences have less T1 weighting than spin echo and more T2* effect with longer echo times. Desired contrasts include T1 with spoiled gradient echo, proton density with short echo times, and T2 with longer echo times. Artifacts include magnetic susceptibility effects and phase cancellation of water and fat. Gradient echo is useful for cartilage imaging, tumor delineation, motion studies, and MRA. Three dimensional spoiled gradient echo allows multiplanar imaging of joints.