Figure 4

Ceiling-suspended lead-screen shielding effects for the PO in radiation sensitive areas, i.e., the glabella (4A), neck (4B), and hypogastrium (4C). The lead screen was placed close to the patient phantom in the left lateral position and close to the PO. LAO, left anterior oblique; RAO, right anterior oblique; Caud, caudal; Cran, cranial.