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. 2016 May 13;89(1063):20151054. doi: 10.1259/bjr.20151054

Figure 4.

Figure 4.

Receiver-operating characteristic curve and linear regression of volume of peritumoral oedema (PTO) and lesion. (a) The receiver-operating characteristic curve shows the area under the curve (AUC) = 0.8083 with a significant difference (p-value = 0.002). (b) Linear regression shows that when PTO volume = 3.9 × tumour volume, glioblastoma multiforme (GBM) and brain metastasis (bMET) can be separated with a sensitivity of 60% and specificity of 95%. The ratio between volume of PTO and volume of tumour lesion can be a promising factor for separating GBM and bMET.