Figure 2.

Representative images of patients with low-risk thymoma (a–e), high-risk thymoma (f–j) and thymic carcinoma (k–o). First column were axial T₁ weighted image of a 46-year-old female patient with type AB thymoma (a), that of a 48-year-old female patient with type B2 thymoma (f), and that of a 42-year-old male patient with thymic carcinoma (k). After ROIs were placed (b, g and l), coloured ADC maps were conducted and embedded into diffusion images (b₁₀₀₀ map) (c, h and m). Corresponding histogram maps showed lower ADC value for thymic carcinoma (n), followed by high-risk thymoma (i) and low-risk thymoma (d). All diagnoses were confirmed by histological examination (e, j and o).