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X-rays and CT scans both use radiation, but they provide vastly different diagnostic information. Understand when X-ray is sufficient, when CT is necessary, and how cost, radiation dose, and diagnostic capability compare.
CT scans show anatomy while PET scans reveal metabolic activity. Understanding when each is used—and how they're combined—helps patients grasp why their doctor ordered one or both for cancer diagnosis, staging, and treatment monitoring.
Not every headache requires imaging. Learn when doctors recommend CT scans for headache evaluation, what red flags indicate need for imaging, and why CT is chosen over MRI for certain headache types.
