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Well visualized fiducial markers. A: CT displaying of Grain cylindrical gold marker, 1 mm × 4 mm. This marker exhibits good contrast on X-ray images with typical “star effects”; B: CT displaying types of flexible wire notched gold marker, 0.28 mm × 10 mm, Gold Anchor marker. This marker exhibits good contrast on X-ray images demonstrating less artifacts. CT: Computed tomography.
