Is ¹⁸F-FDG PET/CT an Accurate Way to Detect Lymph Node Metastasis in Colorectal Cancer: A Systematic Review and Meta-Analysis

Figure 2

The risk of bias in the studies conducted was measured by using QUADAS-2 tool. The risk of bias demonstrated in equation 2 of each diagram shows the number and percentage of studies with high (red), medium (yellow), and low (green) risk of bias in four groups of QUADAS-2 tool.