Untersuchungen über die Konstanz der mittleren optischen Dichte bei konventionellen Röntgen-Thorax-Aufnahmen

Abstract

Digitization of the radiograph enables the determination of the physical parameters used to operate the imaging system, such as medium optical density, image contrast, image latitude and density distribution, in accordance to the guidelines of the German Medical Association. If the region of interest encompasses the clinically relevant region of the lung, the measured value of the optical density corresponds with only minor variation to the average value of the entire lung region.