What does spatial resolution refer to in radiography?

Spatial resolution in radiography pertains to the capability to distinguish small structures in an image. It measures how well a radiographic system can render fine details, which is crucial for accurate diagnosis. High spatial resolution allows for the recognition of small anatomical features and provides clarity in the images produced.

When spatial resolution is high, radiologists can identify subtle differences in tissues or detect small lesions that could be critical for patient care. This ability to visualize fine details enhances the overall diagnostic utility of radiographic images and is directly linked to the quality of the imaging system and the resolution of the imaging detectors used.

The other options, while related to imaging, do not define spatial resolution accurately. For instance, the speed of image capture refers to temporal resolution or system efficiency, not spatial quality. The range of radiation types is related to the imaging modality and does not directly correlate with the ability to discern fine detail. The size of the imaging sensor can influence overall image quality but is not a direct indicator of spatial resolution. Therefore, the focus on distinguishing small structures is what solidifies the definition of spatial resolution in radiography.