Figure 2
From: Development of a clinical decision model for thyroid nodules
Bayesian Belief Network model: Pathological diagnosis (Overall Pathology Dx) in thyroid nodules (Benign versus Malignant). The model structure defines four critical predictors of thyroid nodule histopathology (red circles): fine needle aspiration (FNA) cytology, maximum nodule size (determined by ultrasound), electrical impedance scan (EIS) and ultrasound (US) characteristics of the nodule. Worst EIS is based on LOS: I: Definitely benign; II: Highly unlikely to be malignant; III: Unlikely to be malignant; IV: Likely to be malignant; V: Highly likely to be malignant.