BJR -- Buls et al. 75 (893): 435 Figure 2

Figure 2. Entrance surface dose (ESD) measured on the surface ofan Alderson-rando phantom (Phantom Laboratory, Salem, NY) as a function of dose–area product (DAP) for field size selections 38 cm ( ${blacklozenge}$ ), 23 cm ( ${circ}$ ) and 15 cm ( ${square}$ ) in a typical endoscopic retrograde cholangiopancreatographyprocedure set-up.