How is resolving power typically expressed in fluoroscopic imaging?

Resolving power in fluoroscopic imaging is commonly expressed in line pairs per millimeter. This measurement indicates the system's ability to distinguish between two closely spaced objects or details in the image. A higher number of line pairs per millimeter signifies better resolution, meaning that finer details can be visualized clearly in the fluoroscopic image. This metric is critical for evaluating the quality of the imaging system, ensuring that it meets the demands of clinical practice where precision is necessary for diagnosis and treatment.

Other measurements, such as lines per inch, may also relate to resolution but are not typically used in the context of fluoroscopic imaging. Milliamberts refers to a measure of brightness and is unrelated to resolving power, while wire mesh lines are used in testing resolution rather than expressing it. Hence, line pairs per millimeter is the standard and most relevant metric for assessing resolving power in this field.