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Figure 12. An 8-mm-thick slab of the right lower lobe generated from a focal spiral CT acquisition according to the STS MIP technique in a 29 year-old patient with Rendu-Osler-Weber disease. There are numerous pulmonary arteriovenous microfistulas in the periphery of the right lower lobe. On this STS MIP image, it is possible to demonstrate the vascular connections of the posterior microfistula, with a feeding artery (thin arrows) originating from the posterior segmental artery (thick arrow) and a draining vein (small asterisks) joining the superior segmental vein (large asterisk).