PMMA cylinder with; – 160 mm diameter – 144 mm length – density 1.20 ¡À 0.01 g/cm3 The body of the cylinder allows the following test to be undertaken; Noise/Uniformity – The upper and lower sections of the phantom are uniform PMMA (density 1.20 ¡À 1.00%) The test feature in the centre of the cylinder is included to perform the following measurement; Pixel Intensity Value – 25 mm diameter discs of Aluminium, PTFE, delrin and LDPE suspended in PMMA
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