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Intravenous contrast with gadolinium, a paramagnetic element, alters (shortens) T1 and T2 relaxation times, which results in a brighter signal. Its effect is greater on T1 than on T2 weighted images. Areas of tissue that accumulate Gd will have a higher or brighter signal and “enhance.” In the head and neck, post‐contrast T1 images should be produced with fat saturation to null the fat signal and therefore increase the signal of Gd accumulation (Figure 2.13).