Final answer:
Higher radiographic contrast in abdominal radiography can be obtained by using a contrast medium, limiting the field size, and using lower kilovoltage.
Step-by-step explanation:
To obtain higher radiographic contrast in abdominal radiography, one of the ways is by using a contrast medium. A contrast medium is a substance that enhances the visibility of certain structures or organs in X-ray images. It helps to differentiate between different tissues or organs with varying densities resulting in increased contrast.
Another way is by limiting the field size. By focusing the X-ray beam on a specific area of interest, the surrounding tissues are excluded, leading to improved contrast.
Lower kilovoltage settings result in lower X-ray penetration and increased absorption by the tissues, resulting in increased contrast.