title: Radiographic scale grid for supervoltage radiographs.
abstract: This paper deals with the construction and practical application of a radiographic scale grid incorporated into high energy radiation therapy machines in making port radiographs. The gadet is designed especially for the numerous small radiation therapy departments in community hospitals and private practices that do not have the sophistication provided by a simulator.
mesh_terms: D006801:Humans; D011859:Radiography / Q000295:instrumentation*; D011882:Radiotherapy, High-Energy