Table 3.

Modalities of invitation and bowel preparation for screening CT colonography (CTC) in the European randomized trials

Authors (years)	Invitation	Pre-examination face-to-face consultation	Appointment for CTC	Diet restrictions	Bowel preparation	Faecal tagging
Stoop et al (2012)26	Mail	Yes	Fixed at consultation	Yes	No cathartics	IOCM (100 + 50 ml)
Sali et al (2015)27	Mail	Yes	Fixed at consultation	Yes	Low-dose PEGa PEGb	IOCM (70 ml)
Regge et al (2016)30	Mail	No	Pre-fixed	Yes	Low-dose PEG	IOCM (70 ml)

IOCM, iodinated oral contrast media; PEG, polyetilenglycole.

^aReduced preparation CTC group.

^bFull-preparation CTC group.