Can a CT scan provide functional information about a patient?

A CT scan primarily provides structural information about the body, identifying the size, shape, and location of abnormalities, rather than detailed functional information. While some advanced CT imaging techniques can infer certain functional aspects—such as blood flow in specific scenarios or using specialized approaches like perfusion CT—this is not a primary function of conventional CT scans.

Functional imaging is more typically associated with modalities such as PET scans or MRI with specific sequences designed to assess metabolism or physiological activity, rather than the primary purpose of a standard CT scan. Consequently, the assertion that a CT scan does not provide functional information aligns with its typical usage and capabilities in clinical practice.