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. Author manuscript; available in PMC: 2015 Nov 21.
Published in final edited form as: Phys Med Biol. 2014 Oct 31;59(22):7059–7079. doi: 10.1088/0031-9155/59/22/7059

Figure 12.

Figure 12

Average contrast and signal-to-noise measurements for the equal count images in figure 11. (a), (c) correspond to the 1-cm depth tumours and (b), (d) correspond to the 4-cm depth tumours. Error bars represent one standard deviation from the mean. The brackets point to the detector/energy window combinations with significant differences, or p-values < 0.05. Equivalent performance between equal count CZT and HPGe images is observed for the 1-cm depth tumours. However, a significance difference (p=0.01) in SNR for tumour 2 at a depth of 4 cm is also observed.