RADIOGRAPHIC SIZING TOOL

摘要

A radiographic sizing (10) tool comprising a radiotranslucent carrier (12) with a plurality of spaced apart radiopaque objects (14) disposed therein. The radiopaque objects (14) have the same shape and dimension throughout at least two different planes of view, and preferably all planes of view, to reduce parallax during radiography. For example, the radiopaque objects (14) may comprise spheres having different diameters, preferably in uniform increments and arranged in order of (increasing or decreasing) diameter. The radiographic sizing tool (10) is particularly beneficial in angiography procedures for sizing coronary vessels and stents.