An Experimental Intervention Study Assessing the Impact of a Thin Silicone Gel Surface Overlay on Interface Pressure

Table 2

Mean recorded dose at low and high tube potentials with corresponding percentage changes.

Control (no overlay)	Mean dose for high kV (75 kV, 2 mAs)	37.3 mGy
	Mean dose for low kV (50 kV, 2 mAs)	10.7 mGy
Surface overlay	Mean dose at 75 kV, 2 mAs	Percentage decrease (%)	Mean dose at 50 kV, 2 mAs	Percentage decrease (%)
Gel table/hip pad	32.1 mGy	14.0	8.2 mGy	23.4
Silicone gel flat pad	34.2 mGy	8.3	9.6 mGy	10.3
Blue hollow overlay	35.1 mGy	5.9	10.3 mGy	3.7
Sundance SUN Z3-S	30.0 mGy	19.6	7.8 mGy	27.0
Small round gel	34.3 mGy	8.0	9.6 mGy	10.3