In radiography, which of the following relates to image sharpness?

Image sharpness in radiography is directly related to resolution. Resolution refers to the ability of the imaging system to distinguish between small objects or closely spaced structures within the image. This is crucial for evaluating details such as fractures, lesions, and other critical diagnostic indicators. A high-resolution image will have clear, distinct lines and boundaries, allowing for better interpretation and analysis.

In contrast, while factors such as contrast and density influence the overall appearance of the image, they do not specifically address the level of detail and clarity presented. Contrast pertains to the difference in density between areas of the image, which affects the visibility of detail but not the sharpness itself. Density, on the other hand, relates to the overall darkness of the image, which can impact visibility but does not make an image sharper or clearer. Fog refers to unwanted exposure or scatter that degrades the quality of the image, making details harder to distinguish. Thus, resolution is the key term that encapsulates the idea of image sharpness in radiography.