What does 1 F on a CT mean?

In the context of a CT scan, "1 F" typically refers to a measurement indicating the size of a lesion or abnormality, where "F" stands for "centimeter." Therefore, "1 F" would mean that the lesion measures approximately 1 centimeter in size. This notation is often used by radiologists to describe findings succinctly. Always consult with a medical professional for accurate interpretations of imaging results.