There are three main adjustable controls that regulate the 1) tube voltage in kilovolts, 2) the tube amperage in milliamps, and the 3) exposure time in minutes and seconds. From the observations, 80 kVp with 2 mAs provides a better image quality as compared to others, and the optical density (OD) of air stepwedge increases with increasing thickness. It is these differences in absorption and the corresponding varying exposure level of the film that creates the images which can clearly show broken bones. Setting the exposure factors in HF X-ray machines The Control Console is an important component of an X-ray generating system. The film was then processed by using an automatic processor in the darkroom. The source-to-image distance, which was 183 cm, was kept constant in this study. It was placed right below the RMI Radiographic Chest Phantom, Model 170B and then was exposed by using different kVp, which were 60, 70, and 80 kVp with 2, 2.5, 3.2, and 4 mAs for each kVp. The sequence of storage tube functions and X-ray exposure is automatically controlled by a central timing device and all time intervals are synchronized with the vertical scanning period of the television system. Radiographic film KONICA MG-SR PLUS, which is green-sensitive film, was used and inserted into a cassette. The design of an X-ray television system containing an electronic recording storage tube is described. The RMI Radiographic Chest Phantom, Model 170B, was used as the subject matter in this experiment. The comparison of the image produced in terms of exposure assessment was made by using the Toshiba KXO 50R X-ray Machine. The aim of this experiment is to obtain the best quality radiograph by evaluating the optimum parameters such as kVp, mA, exposure time, and distance associated with the film characteristic and to find the difference in optical density (OD) of air stepwedge with different thicknesses. And comparing the image characteristics of a particular x-ray system with different techniques. It's also represents the change of actual human body to compare the image produced by using different parameters. Chest X-rays are one of the most commonly performed procedures for diagnosing conditions affecting the chest and its contents.
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