What are the three factors that should be optimized on CTC?
- • Colonic cleansing/fecal tagging to ensure that adherent or retained stool can be distinguished from potential polyps to avoid false-positive results.
- • Colonic distension so that polyps can be visualized against an air-filled lumen.
- • Patient positioning using at least two positions to assess for lesion mobility, to shift fluid to increase exposed colonic lumen, and to shift gas to distend colonic segments. If patients are unable to lie prone, decubitus images may be performed as an alternative
