The influence of film-screen color sensitivity and type of measurement device on kVp measurements.

Three methods for evaluating radiographic kVp were studied: the Wisconsin Test Cassette, the Noninvasive Evaluator of Radiation Outputs (NERO), and the Dynalyzer. The Dynalyzer kVp readings were the highest and were followed by NERO and cassette readings in descending order. By film type, the cassette readings ranged from Kodak OG (green sensitive), TMG (green sensitive), XK (blue sensitive), and XRP (blue sensitive) in descending order. The results show that there is significant variation between the methods.