Patient preparation
Preparation of upper GI-tract 0 = no 1 = yes	Rectal enema 0 = no preparation 1 = cleansing enema	Rectal filling 0 = no filling 1 = ultrasonic gel 2 = potato starch 3 = air	Volume of rectal filling (ml)	Use of urethral Folys catheter 0 = no 1 = yes	Bladder filling 0 = empty 1 = moderately filled 2 = full 3 = 1 h void 4 = 2 h void	Vaginal filling 0 = no filling 1 = sterile gel 2 = normal gel	Use of IV contrast 0 = no 1 = yes