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Insights into Imaging
Fig. 6 | Insights into Imaging

Fig. 6

From: CT colonography: avoiding traps and pitfalls

Fig. 6

a Ultra-low dose image (140 kV, 10 mAs) of the sigmoid: pedunculated polyp with increased density due to image noise (pseudoenhancement) (white arrow). b Same patient imaged with a normal dose for staging of malignant tumour elsewhere in the colon. The same polyp shows a normal soft tissue density (white arrow)

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