Figure 2
(a) Scenario A. MCNP geometry. Left, X-ray exposure setup in Z-Y view; 1, detector simulating the Petri dish at the eye lens level; 2, detector simulating the Petri dish at the chest level; 3, detector for the spectra estimation at the gonads level; 4, detector simulating the Petri dish in the attenuated primary beam; 5, X-ray detector; 6, X-ray system; 7, water phantom simulating the operator body; 8, water phantom simulating the operator head; 9, concrete floor; 10, operator eye (see right part of this figure for details); 11, PMMA phantom; 12, patient couch. (b) Scenario B. MCNP geometry visualization. Background color representative of the zero-importance region outside the “simulation box”. The visualized MCNP cells related to the concrete, the X-ray tube model, the Monte Carlo detector and the 2 Petri dishes are shown. Different colors for distinguishing the different MCNP cells. Tally regions 2(B) and 3(B) related to the Petri dish positions. Tally region 1(B) referred to a numerical detector. (c) Operator eye in X–Y view as plotted by the MCNP intrinsic viewer. 501, Cornea; 502, Sclera; 503, Retina; 506, Eye lens; 507, Vitreous body; 508, Choroid; 509, Anterior chamber 510, Iris; 511, Optic nerve. Eye model volume, 7.89 cm3; Axial length, 2.58 cm; Lens Volume, 0.163 cm3; Equatorial length, 0.410 cm; Lens depth, 0.390 cm.
