Fig. 2From: A method for comparing intra-tumoural radioactivity uptake heterogeneity in preclinical positron emission tomography studiesVisualising the results of the application of the algorithm. The heterogeneity contribution for one plane (k) would be calculated as \( H(k)={\displaystyle \sum_1^m\left(\frac{\left|{I}_p-{\overline{I}}_k\right|+\left|{I}_q-{\overline{I}}_k\right|}{2}/ \max\;\left(\frac{\left|{I}_p-{\overline{I}}_k\right|+\left|{I}_q-{\overline{I}}_k\right|\;}{2}\right)\cdot \frac{1}{d_{pq}}\right)} \) Back to article page