What does spatial resolution refer to in radiographic images?

Spatial resolution in radiographic images refers to the ability to distinguish between two closely spaced objects. This aspect of image quality is crucial because it determines how well small details can be visualized in an image. A high spatial resolution means that fine details can be seen clearly, which is particularly important in medical imaging where the differentiation of structures can inform diagnosis and treatment.

When spatial resolution is high, it allows for the identification of small lesions, fractures, or anatomical structures that are close together. This capability is influenced by factors such as the size of the detector elements, the quality of the imaging system, and the overall technique used in obtaining the image. Therefore, when assessing the clarity and detail within a radiographic image, spatial resolution significantly impacts how well these closely spaced objects can be differentiated.