Comparison of CT and chemical-shift MRI for differentiating thymoma from non-thymomatous conditions in myasthenia gravis: value of qualitative and quantitative assessment.

•Quantitative analysis is useful in evaluating patients with MG.•Chemical-shift MR is more reliable than CT in differentiating thymomas from non-thymomatous conditions.•MR could replace CT in everyday clinical practice for evaluating subjects with MG.