Fig. 12From: Gallbladder adenomyomatosis: imaging findings, tricks and pitfallsMRI of gallbladder adenomyomatosis: the pearl necklace sign. On heavily T2-weighted images, like in this maximum intensity projection reconstruction of a volumetric MRCP, a lot of RAS can be identified one next to the other around the gallbladder, leading to the so-called pearl necklace signBack to article page