In radiology, what is the term for the degree to which an image can depict fine detail?

In radiology, the degree to which an image can depict fine detail is referred to as resolution. This term encompasses the ability of a radiographic image to clearly differentiate between small structures and distinguish fine details in the anatomy being examined. A higher resolution means that the image can present more distinct edges and finer details, allowing for better diagnosis and evaluation.

Resolution is influenced by various factors such as the imaging modality used, the characteristics of the detector, and the technique applied. For example, in digital imaging, the pixel size and the number of pixels contribute significantly to the image resolution. When resolution is high, radiologists can identify smaller anomalies that might be critical for treatment decisions.

Although sharpness might intuitively seem related, it pertains more to the clarity of edges within an image rather than the overall ability to depict detail throughout the entire image. Contrast, on the other hand, relates to the differences in image brightness and doesn't directly indicate the level of detail visible. Brightness is associated with the luminance of the image yet does not refer to detail representation. Understanding resolution is essential for evaluating the quality of imaging studies and ensuring accurate interpretations in patient care.