Role of diffusion-weighted magnetic resonance imaging in the differentiation of benign and malignant pulmonary lesions.

Purpose: To evaluate the role of magnetic resonance (MRI) diffusion-weighted imaging (DWI) and apparent diffusion coefficient (ADC) measurement of solid and cystic pulmonary masses in differentiating benign from malignant lesions.

Material And Methods: The study included 41 patients with pulmonary masses, who underwent conventional MRI and DWI ( value 0, 500, and 1000 s/mm²) examinations with 1.5-T MRI.

Diffusion-weighed MR of the thyroid gland in Graves' disease: assessment of disease activity and prediction of outcome.

Rationale And Objectives: To assess the activity and clinical course of Graves' disease with diffusion-weighted magnetic resonance (MR) imaging.

Materials And Methods: Fifty-one patients with Graves' disease and 25 volunteers underwent diffusion MR imaging of the thyroid gland using a single shot echo-planar imaging with b-factor of 0, 300 and 600 second/mm(2). The apparent diffusion coefficient (ADC) values of the thyroid gland were calculated.