Determination of the luminance distribution of electro-optical X-ray image intensifiers

This document establishes a standardized method for evaluating the luminance distribution characteristics of electro-optical X-ray image intensifiers. It provides a framework for testing procedures designed to measure how brightness varies across the output screen of such devices. The approach outlined ensures consistent assessment of image quality parameters, which are critical for diagnostic imaging applications. Specific test setups and measurement techniques are detailed to allow for the quantitative analysis of spatial uniformity in luminance output. By defining precise conditions for illumination and detection, the standard enables manufacturers and laboratories to obtain comparable results. The methodology addresses potential variations caused by the internal structure of the intensifier and the optical properties of the screen. Adherence to these procedures supports the verification of device performance against established technical criteria. This guidance facilitates interoperability and quality assurance in the field of medical and industrial radiography equipment. It serves as a technical reference for defining acceptance limits and conducting routine quality control checks on new or existing imaging systems.