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. 2015 Jul 8;16(4):125–148. doi: 10.1120/jacmp.v16i4.5313

Figure 9.

Figure 9

The relative attenuation for the KVue couch at various gantry angles ranging from 90° to 270° using 6X FFF beam at three different field sizes. Relative attenuation is greatest in a small window of oblique entry. The attenuation in positioning of the rails in ‘out’ and ‘in’ positions was studied using a 4×4 cm2 field size.