title: A device to measure roentgenographic structures.
abstract: A simple device and a nomogram are presented to permit rapid, accurate measurement of structures shown on roentgenograms. The arrangement is designed specifically for measurement of coronary vessels, but it can be adapted to other structures.
mesh_terms: D000792:Angiography / Q000295:instrumentation; D017023:Coronary Angiography; D003327:Coronary Disease / Q000000981:diagnostic imaging; D011859:Radiography / Q000295:instrumentation*; D014894:Weights and Measures