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. 2021 Feb 6;24(2):131–142. doi: 10.1007/s40477-021-00563-1

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© The Author(s) 2021

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Fig. 10 — a Ultrasound image shows a segmental type of GA that involves a larger portion of the gallbladder wall, the bottom, and the distal third of the body. The affected part appears hypoechoic (white arrows), with hyperechoic cholesterol crystals (yellow arrows). b The hyperechoic cholesterol crystal of the segmental type of GA generating twinkling artifacts on the colour Doppler exam (red arrow). c The segmental type of GA visualised with a multifrequency linear probe (white arrow)