title: Designing a wax phantom to simulate a flat tumor with diffuse edges.
abstract: A suitable was phantom was designed for evaluating various film techniques used in subtraction radiography. Holes are drilled in a slab of wax and filled with various concentrations of iodinated wax, producing disk-shaped regions with diffuse borders. The technical details of construction and a representative application are described.
mesh_terms: D008961:Models, Structural; D009369:Neoplasms / Q000000981:diagnostic imaging*; D011859:Radiography; D013382:Subtraction Technique